Free web tools for SEO, code and everyday tasks.

Check a website, look up DNS records, convert images, format JSON or clean up text. Every tool does one job and is free to use.

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348 free tools
No sign-up
Files stay in your browser
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Popular tools

On-Page SEO Checker

Audit any page's title, meta tags, headings, images, links, canonical and structured data in one report.

Image Compressor

Shrink JPG, PNG and WebP images in bulk, convert to WebP and resize, privately in your browser.

JSON Beautifier

Format, validate and minify JSON in your browser, with exact error lines and plain-English fixes.

DNS Lookup

Fetch a domain's A, AAAA, NS, MX, TXT and SOA records in one go.

Word Count

Count words and letters live as you type, to stay within any length limit.

QR Code Generator

Turn a link into a QR code that any phone camera can scan, ready to download.

Password Generator

Create strong random passwords with the length and character types you choose.

What's My IP

See the public IP address that websites see when you connect.

New tools

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Video Compressor

Reduce video file size with H.264: choose the compression strength and a maximum resolution.

Screen Recorder

Record your screen, a window or a browser tab with sound and your microphone. No install, no watermark, no time limit.

DNS Leak Test

Check whether your VPN or proxy leaks your DNS lookups to your internet provider. See which DNS servers you really use.

Traceroute Online

Run a traceroute or MTR to any domain or IP from servers around the world and see every hop, its location and delay.

Global Ping Test

Ping a website or server from up to 15 locations around the world at once and compare response times and packet loss.

Video to GIF Converter

Turn a clip from any video into a looping GIF: pick the start, length, size and frame rate.

Audio Converter

Convert audio between MP3, WAV, M4A, OGG, Opus and FLAC, including audio from video files.

SEO & Web Tools

51 tools View all

On-Page SEO Checker

Audit any page's title, meta tags, headings, images, links, canonical and structured data in one report.

Website Speed Test

Test any page's speed on mobile and desktop with Google PageSpeed Insights, Core Web Vitals and a clear list of fixes.

Broken Link Checker

Find broken links, dead images and redirects on one page or across your whole website.

Domain Rating (DR) Checker

Check the Ahrefs Domain Rating of up to 20 websites at once, free and without signing up.

Keyword Ideas Generator

Find hundreds of long-tail keywords and questions people type into Google or YouTube, for any country.

SEO Competitor Comparison

Compare your page with up to three competitors: on-page SEO, Domain Rating, speed and domain age side by side.

Website SEO Audit

Crawl up to 100 pages of a website and find missing titles, duplicate descriptions, thin pages, noindex tags and errors.

XML Sitemap Generator

Crawl your website and download a ready-to-upload sitemap.xml with up to 500 indexable pages.

CMS Detector

Find out what any website is built with: CMS, ecommerce platform, framework, plugins, analytics, CDN and 7,000+ other technologies.

Open Graph Checker

Preview how a link looks on Facebook, X, LinkedIn and WhatsApp, and check its Open Graph and Twitter tags.

AI Crawler Checker

See which AI crawlers, such as GPTBot, ClaudeBot and Google-Extended, your robots.txt allows or blocks.

SERP Snippet Preview

Preview how your title and meta description look in Google results, with pixel-width truncation checks.

Schema Markup Generator

Build JSON-LD structured data for FAQ, Article, Organization, Local Business and Breadcrumb markup.

Image Geotagger

Add GPS location, a title and keywords to your photos' EXIF data, or remove the location, right in your browser.

Local Citation Finder

Find the business directories to list your business in, by country and industry, and see where competitors are listed.

HTML Code Editor

Write HTML, CSS and JavaScript and see a live preview update as you type.

SEO Tags Generator

Generate title, meta description and Open Graph tags ready to paste into your page.

Twitter Card Generator

Generate the meta tags that control how your links look when shared on X (Twitter).

Privacy Policy Generator

Draft a privacy policy for your website from a few business details.

Terms of Service Generator

Draft terms of service for your website or app from a few business details.

Robots.txt Generator

Build a robots.txt file with per-crawler rules (including AI crawlers), blocked paths and your sitemap.

HTACCESS Redirect Generator

Write the Apache .htaccess rule that redirects an old page to a new URL with a 301, 302, 303 or 307.

Lorem Ipsum Generator

Generate lorem ipsum paragraphs, sentences or words, with the classic opening and optional <p> tags.

HTML Tags Stripper

Turn HTML into clean plain text: tags, scripts and styles removed, entities decoded, paragraphs kept.

JS Obfuscator

Make JavaScript hard for people to read while it still runs the same way.

SQL Beautifier

Format or minify SQL for MySQL, PostgreSQL, SQL Server, Oracle, SQLite, BigQuery and more.

Wheel Color Picker

Pick any colour from a colour wheel and get its HEX, RGB and HSL values.

Online SMTP Test

Test an SMTP server's host, port, encryption and login by sending a real test email.

GZIP Compression Test

Check whether a web server really sends compressed (gzip) responses.

Source Code Downloader

View and copy the raw HTML a server returns for any URL.

JSON-LD Schema Validator

Check the JSON-LD structured data on a page, or pasted code, for errors and missing properties.

Schema Markup Visualizer

See a page's JSON-LD structured data as a readable tree of entities and properties.

JSON-LD to Microdata Converter

Convert JSON-LD structured data into equivalent HTML Microdata markup.

Hreflang Tag Generator

Generate hreflang tags for multilingual and multi-regional sites, as HTML, HTTP headers or an XML sitemap.

Canonical Tag Generator

Clean up a URL and generate its canonical tag, removing tracking parameters and fixing www, HTTPS and slashes.

PWA Manifest Generator

Create a web app manifest (manifest.webmanifest) with names, colours, icons and display mode.

PWA Checker

Check whether a website can be installed as a progressive web app, and what to fix if not.

Sitemap Visualizer

Read any XML sitemap and see its URLs as a folder tree, with lastmod dates and quality checks.

Keyword Density Checker

Find the most used words and phrases on a page or in text, and check where your focus keyword appears.

Google Search Operators Builder

Build advanced Google searches with site:, intitle:, inurl:, filetype: and more, without memorising the syntax.

llms.txt Generator

Create an llms.txt file for your website from its sitemap, with page titles and descriptions grouped into sections.

llms.txt Checker

Validate a website's llms.txt file: structure, summary, sections, link format and broken links.

Robots.txt Tester

Test whether URLs are allowed or blocked by robots.txt for Googlebot, Bingbot, GPTBot or any crawler, and see which rule decides.

Heading Structure Checker

See a page's H1 to H6 headings as an outline and find missing H1s, skipped levels, empty and duplicate headings.

Image Alt Text Checker

Find images with missing, empty, generic or file-name alt text on any web page.

Noindex Checker

Check whether a page can be indexed: robots meta tags, X-Robots-Tag headers, robots.txt, status code, redirects and canonical tag.

UTM Link Builder

Build campaign URLs with UTM parameters for Google Analytics, with presets for ads, social and email.

Favicon Generator

Create a complete favicon package from an image or text: favicon.ico, PNG icons, Apple touch icon, Android icons and web manifest.

Microdata to JSON-LD Converter

Convert schema.org Microdata (itemscope, itemprop) from a page or pasted HTML into JSON-LD structured data.

AMP Validator

Check that an AMP page is valid with Google's official AMP validator, with every error, its line and how to fix it.

Keyword Cloud Generator

Turn any text into a word cloud of its most used keywords and phrases, with counts and density, and download it as PNG.

Network Tools

18 tools View all

Website Status Checker

Check whether a website is up and reachable, or down for everyone.

Ping

Measure how long a server takes to respond, to spot slow or unreachable hosts.

IP to Hostname

Reverse-lookup an IP address to find the hostname it points back to.

Hostname to IP

Resolve a domain or hostname to all the IPv4 and IPv6 addresses it currently points at.

IP Information

Look up any IP address: location, ISP, organisation, ASN and time zone. Leave it empty for your own IP.

MX Lookup

See which mail servers accept email for a domain, in priority order.

SPF, DKIM & DMARC Checker

Check a domain's email authentication records and find out why its mail goes to spam.

User Agent Finder

Show your browser's full user agent string, plus the browser, OS and device it describes.

What's My IP

See the public IP address that websites see when you connect.

DNS Lookup

Fetch a domain's A, AAAA, NS, MX, TXT and SOA records in one go.

Open Port Checker

Test whether a TCP port on a host is open and accepting connections.

IP Subnet Calculator

Work out the network, broadcast address, mask and usable host range for any subnet.

DNS Propagation Checker

Check a domain's DNS records on 20 public resolvers worldwide and its own nameservers at once.

ASN Lookup

Look up an autonomous system (AS number), or the ASN behind an IP or domain: owner, IP ranges and peers.

IP Blacklist Checker

Check an IP address or server against 19 spam and abuse blacklists (DNSBLs) at once.

Email Blacklist Checker

Check a domain and its mail servers against domain and IP blacklists to find email delivery problems.

Traceroute Online

Run a traceroute or MTR to any domain or IP from servers around the world and see every hop, its location and delay.

Global Ping Test

Ping a website or server from up to 15 locations around the world at once and compare response times and packet loss.

Encoding Tools

14 tools View all

HTML Entity Encode

Turn <, >, & and quotes into HTML entities so code displays as text instead of running.

HTML Entity Decode

Convert entities like & and " back into readable characters.

URL Encoder

Percent-encode spaces, symbols and accented letters so a URL or query value travels safely.

URL Decoder

Turn %20-style percent-encoding back into a readable URL or parameter.

Text to Binary

Show the 8-bit binary code behind every character of your text.

Binary to Text

Decode groups of 0s and 1s back into readable text.

Text to Base64

Encode text as Base64 for use in JSON, headers, data URIs and config files.

Base64 To Text

Decode a Base64 string to reveal the text inside it.

ROT13 Encoder

Shift every letter 13 places to hide spoilers or puzzle answers in plain sight.

ROT13 Decoder

Shift ROT13-scrambled letters back 13 places to read the original message.

Unicode to Punycode

Convert an internationalised domain like münchen.de into its xn-- form for DNS.

Punycode to Unicode

Turn an xn-- domain from logs or WHOIS back into the characters people type.

Encode Quoted Printable

Encode accented letters and symbols the way email (MIME) expects them.

Decode Quoted Printable

Clean up =C3=A9-style email source back into the original readable text.

Image Tools

42 tools View all

Image Rotate

Fix sideways photos by rotating them in 90-degree steps, right in your browser.

Image to Grayscale

Convert any picture to black and white (shades of grey) and save the result.

Image Compressor

Shrink JPG, PNG and WebP images in bulk, convert to WebP and resize, privately in your browser.

Image Resizer

Scale an image to exact pixel dimensions, with the option to keep its proportions.

QR Code Generator

Turn a link into a QR code that any phone camera can scan, ready to download.

QR Code Reader

Upload a screenshot or photo of a QR code and read the data inside without a phone.

Image to Base64

Convert an image into a Base64 data URI to embed directly in HTML or CSS.

JPG to PNG

Convert JPG photos to lossless PNG in bulk, up to 30 at once, privately in your browser.

JPG to WEBP

Convert JPG photos to smaller WebP images in bulk, up to 30 at once, in your browser.

PNG to JPG

Convert PNG images to smaller JPG files in bulk, with a background colour for transparency.

PNG to WEBP

Convert PNG images to smaller WebP files in bulk, with transparency kept, in your browser.

WEBP to JPG

Convert WebP images to JPG in bulk, up to 30 at once, privately in your browser.

WEBP to PNG

Convert WebP images to lossless PNG in bulk, with transparency kept, in your browser.

Image OCR

Extract editable text from a screenshot, scan or photo of a document.

JFIF to PNG Converter

Convert JFIF images to PNG in your browser, in bulk, without uploading them.

JFIF to WEBP Converter

Convert JFIF images to smaller WebP files for the web, right in your browser.

ICO to PNG Converter

Extract the images inside an ICO or favicon file as PNGs, one per size.

ICO to JPG Converter

Convert ICO icons and favicons to JPG, with a background colour of your choice.

ICO to WEBP Converter

Convert ICO icons to WebP images that keep their transparency.

PNG to ICO Converter

Create a multi-size ICO favicon from a PNG image in your browser.

JPG to ICO Converter

Turn a JPG image into an ICO icon or favicon with the sizes you choose.

WebP to ICO Converter

Convert a WebP image into a multi-size ICO favicon, keeping transparency.

SVG to PNG Converter

Convert SVG vector graphics to PNG at any width, with a transparent background.

SVG to JPG Converter

Convert SVG files to JPG images at the size you need, with a background colour.

SVG to WEBP Converter

Convert SVG graphics to WebP images at any width, keeping transparency.

SVG to ICO Converter

Make a crisp multi-size ICO favicon from an SVG logo.

HEIC to PNG Converter

Convert iPhone HEIC photos to PNG in your browser, without uploading them.

HEIC to JPG Converter

Convert iPhone HEIC photos to JPG in bulk, privately in your browser.

HEIC to WEBP Converter

Convert HEIC photos to compact WebP images for the web.

TIFF to PNG Converter

Convert TIFF scans and images to PNG in your browser.

TIFF to JPG Converter

Convert large TIFF files to lightweight JPGs in your browser.

Base64 to PNG Converter

Paste a Base64 string or data URI and download it as a PNG image.

Base64 to JPG Converter

Decode a Base64 image string or data URI and save it as a JPG.

Image Cropper

Crop images freely or to exact ratios like 1:1, 16:9 and 4:5, rotate and flip, then download.

Image Merger

Combine several images side by side, top to bottom or in a grid, and download one picture.

Image Filters

Apply photo filters like vintage, black and white, sepia and vivid to your images, with adjustable strength.

Image Adjustment

Adjust brightness, contrast, saturation, exposure, warmth, hue, sharpness, blur and vignette.

Image Censor (Blur & Pixelate)

Blur, pixelate or black out faces, number plates and private details in a picture.

Meme Generator

Add classic top and bottom meme text to your own picture and download it.

EXIF Data Remover

Remove GPS location, camera details and other hidden metadata from photos without reducing quality.

Background Remover

Remove the background from a photo automatically with AI, in your browser, and download a transparent PNG.

QR Code Editor

Design a custom QR code with rounded dots, colours, gradients and your logo, for links, Wi-Fi, contacts and more.

PDF Tools

26 tools View all

Merge PDF

Combine several PDF files into one, in the order you choose, without uploading them.

Split PDF

Split a PDF into several files by page ranges, every page, or every few pages.

Organize PDF Pages

Reorder, rotate and remove PDF pages with drag and drop, then save the new PDF.

Rotate PDF

Rotate all or some pages of a PDF by 90 or 180 degrees and save it permanently.

Delete PDF Pages

Remove unwanted pages from a PDF by clicking them or typing their numbers.

Extract PDF Pages

Pick pages from a PDF and save them as a new PDF.

PDF to JPG Converter

Convert PDF pages into high-quality JPG images, at the resolution you choose.

PDF to PNG Converter

Convert PDF pages into sharp, lossless PNG images.

JPG to PDF Converter

Turn JPG photos and scans into one PDF, one image per page, on A4, Letter or image-sized pages.

PNG to PDF Converter

Convert PNG images and screenshots into a PDF, one image per page.

Compress PDF

Make a PDF smaller by compressing the photos and scans inside it, keeping text sharp.

PDF to Text Converter

Extract all the text from a PDF, page by page, to copy or download as a .txt file.

Add Page Numbers to PDF

Number the pages of a PDF: choose the position, style, starting number and pages.

Watermark PDF

Add a text watermark such as CONFIDENTIAL or DRAFT to PDF pages, once or repeated.

Sign PDF

Draw, type or upload your signature and place it on any page of a PDF.

PDF Metadata Editor

View and edit a PDF's title, author, subject and keywords, or remove its metadata.

Protect PDF

Add a password to a PDF with AES-256 encryption, and optionally limit printing and copying.

Unlock PDF

Remove the password and the print or copy restrictions from a PDF you have the password for.

HTML to PDF Converter

Convert HTML code or an .html file into a PDF, with its styles, images and links.

Markdown to PDF Converter

Convert Markdown text or a .md file into a clean, well-formatted PDF document.

Text to PDF Converter

Turn plain text or a .txt file into a PDF with the font, size and margins you choose.

Crop PDF

Cut the margins off PDF pages, set by hand or detected automatically, on all pages or only some.

Grayscale PDF

Convert a colour PDF to black and white (grayscale), ready for printing without colour ink.

Flatten PDF

Flatten PDF form fields, comments and annotations into the page so they can no longer be edited.

Redact PDF

Black out sensitive text in a PDF for good: draw boxes or search for words, then download a truly redacted copy.

PDF to WebP Converter

Convert PDF pages into small, sharp WebP images for websites and apps.

Document Converters

9 tools View all

Word to HTML Converter

Convert a Word .docx document into clean HTML with headings, lists, tables, links and images.

Word to Image Converter

Convert Word .docx pages into PNG or JPG images, one image per page or one long image.

PDF to HTML Converter

Convert a PDF into an HTML page: clean text with headings, or the original look with selectable text.

PDF to EPUB Converter

Turn a PDF into a reflowable EPUB e-book with chapters, for Kindle, Kobo, Apple Books and phones.

PDF to FB2 Converter

Convert a PDF into an FB2 (FictionBook) e-book with chapters and reflowable text.

EPUB to PDF Converter

Convert an EPUB e-book into a PDF with its cover, chapters and pictures, ready to print or share.

EPUB to FB2 Converter

Convert EPUB e-books to FB2 (FictionBook), keeping the cover, chapters, images and emphasis.

FB2 to EPUB Converter

Convert FB2 (FictionBook) e-books, including .fb2.zip, to EPUB for Apple Books, Kobo, Google Play Books and Kindle.

FB2 to PDF Converter

Convert FB2 (FictionBook) e-books into a PDF with cover, chapters and images, ready to print.

Media Tools

22 tools View all

Screen Recorder

Record your screen, a window or a browser tab with sound and your microphone. No install, no watermark, no time limit.

Voice Recorder

Record audio from your microphone in the browser and download it as WebM, M4A or WAV.

Webcam Recorder

Record video from your webcam with sound, right in the browser, and download it as MP4 or WebM.

Video to GIF Converter

Turn a clip from any video into a looping GIF: pick the start, length, size and frame rate.

Video to Animated WebP

Convert a video clip into an animated WebP: GIF-like looping animation at a fraction of the size.

Video to APNG Converter

Make an animated PNG (APNG) from a short video clip, with full colour and transparency support.

Video to MP3 Converter

Extract the sound from any video as an MP3 file, from 128 to 320 kbps.

Extract Audio from Video

Save a video's soundtrack as MP3, M4A, WAV, OGG, Opus or FLAC.

Audio Converter

Convert audio between MP3, WAV, M4A, OGG, Opus and FLAC, including audio from video files.

Audio Compressor

Shrink audio files by lowering the bitrate, with MP3, M4A or Opus output and an optional mono mix.

Video Compressor

Reduce video file size with H.264: choose the compression strength and a maximum resolution.

Video Converter

Convert videos to MP4, WebM, MOV, MKV or AVI. MP4 and MOV changes are instant when no re-encoding is needed.

Video Trimmer

Cut the start and end off a video, with a player to pick the exact times. Instant or frame-accurate.

Audio Trimmer

Cut an audio file to the part you want, with optional fade-in and fade-out. Great for ringtones.

Remove Audio from Video

Remove the sound from a video in seconds, without re-encoding or losing picture quality.

Video Speed Changer

Speed a video up or slow it down, from 0.25× slow motion to 4× time-lapse, with the sound kept in tune.

Rotate & Flip Video

Rotate a sideways video 90° or 180°, or mirror it horizontally or vertically.

Volume Booster

Make quiet audio or video louder, or normalise it to a standard loudness, without harsh clipping.

Audio Merger

Join several audio files into one, in the order you choose, with optional silence between them.

Video Merger

Join several video clips into one MP4, in any order, even when they have different sizes or formats.

Add Watermark to Video

Put your text or logo on a video, in any corner or the centre, with the size and opacity you choose.

Add Subtitles to Video

Burn SRT or VTT subtitles permanently into a video, or add them as a soft subtitle track.

Format Converters

23 tools View all

Markdown To HTML

Convert Markdown into clean HTML for websites, emails and CMS fields.

HTML To Markdown

Convert HTML into Markdown for docs, static-site generators and note apps.

CSV To JSON

Turn spreadsheet rows into a JSON array, using the header row as keys.

JSON To CSV

Flatten a JSON array into CSV rows that open in Excel or Google Sheets.

JSON to XML

Map JSON objects and arrays to XML elements, with control over the root name and indentation.

XML To JSON

Convert an XML document or feed into JSON that is easy to use in code.

HTML Minifier

Strip comments and extra whitespace from HTML to cut page weight.

CSS Minifier

Compress a stylesheet by removing comments and unneeded whitespace.

JS Minifier

Compress JavaScript by removing comments, whitespace and other unneeded characters.

HTML Formatter

Re-indent messy or minified HTML so nested elements are easy to follow.

CSS Formatter

Expand minified CSS so each rule and declaration sits on its own line.

JS Formatter

Restore line breaks and indentation to minified JavaScript so you can read it.

RGB To Hex

Convert red, green and blue values into a HEX colour code with a live preview.

Hex To RGB

Convert a HEX colour code into its red, green and blue values.

JSON Beautifier

Format, validate and minify JSON in your browser, with exact error lines and plain-English fixes.

JSON Validator

Paste JSON and check in one click whether it is valid, with the reason when it is not.

Timestamp Converter

Convert Unix timestamps to readable dates and back again.

JSON to YAML Converter

Convert JSON into clean, readable YAML for config files, Kubernetes and CI pipelines.

YAML to JSON Converter

Convert YAML to JSON and catch YAML syntax errors with the line number.

JSON to TSV Converter

Turn a JSON array into tab-separated values that paste straight into Excel or Google Sheets.

TSV to JSON Converter

Paste cells copied from Excel or Google Sheets and get a JSON array of objects.

SRT to VTT Converter

Convert SRT subtitles to WebVTT for HTML5 video, and shift the timing if they are out of sync.

VTT to SRT Converter

Convert WebVTT subtitles to SRT for video editors and players, removing styling tags.

Developer Tools

9 tools View all

JSON Viewer

Explore JSON as a collapsible tree and copy the path of any value.

Code Syntax Highlighter

Colour code in 30+ languages with a choice of themes, and copy it as rich text or HTML.

Regex Tester

Test JavaScript regular expressions live, see every match and group, and try replacements.

Cron Expression Generator

Build and explain cron schedules, and see the next times a job will run.

JWT Decoder & Encoder

Decode a JSON Web Token, check its expiry, verify an HMAC signature, or sign a new token.

Diff Checker

Compare two texts or code files and highlight every added, removed and changed line and word.

SSH Config Generator

Create ~/.ssh/config entries so you can connect with a short alias instead of long ssh commands.

.htaccess to Nginx Converter

Convert Apache .htaccess rewrite rules, redirects and headers into Nginx configuration.

Nginx to .htaccess Converter

Convert Nginx rewrite, return, location and header rules into an Apache .htaccess file.

Text Tools

40 tools View all

Text Cleaner

Remove extra spaces, stray line breaks, smart quotes and hidden formatting in one go.

Email Extractor

Pull every email address out of a block of text or page source.

URL Extractor

List every link found in a block of text, an email or page source.

Word Count

Count words and letters live as you type, to stay within any length limit.

Text Separator

Split comma-separated or other delimited text so each item gets its own line.

Text To Slug

Turn a title into a clean, lowercase, hyphenated URL slug.

Duplicate Lines Remover

Delete repeated lines from a list and keep one copy of each.

Line Break Remover

Join text copied from PDFs and emails back into normal flowing paragraphs.

Text Replacer

Find a word or phrase and replace every occurrence in one click.

Text Reverser

Reverse the order of characters in any piece of text.

Word Density Counter

See how often each word appears, to spot overused terms and check keyword focus.

Palindrome Checker

Check whether a word or phrase reads the same forwards and backwards.

Case Converter

Switch text between UPPER, lower, Title, Sentence and other cases in one click.

Shuffle Text Lines

Put a list of lines into random order for draws, quizzes and test data.

Text Repeater

Repeat a word or phrase as many times as you need, ready to copy.

Paste & Share Text

Publish a snippet, log or note and share it with a short link.

Email Validator

Check a list of email addresses and flag the ones that are not valid.

Random Number Generator

Pick one or more random numbers within any range you set.

Whitespace Normalizer

Clean up messy spacing: trim lines, collapse repeated spaces, convert tabs and remove invisible characters.

Text to List Converter

Turn comma-separated text into a list, or a list into comma-separated values, bullets, HTML or JSON.

Invisible Text Generator

Copy blank, invisible characters for empty names, messages and bios in games and apps.

Sentence Counter

Count sentences, paragraphs and words, with average sentence length and reading time.

Add Line Numbers

Number every line of text or code, or strip existing line numbers off.

Text Line Joiner

Join many lines into one, separated by a space, comma or anything you choose.

Sort Lines

Sort lines alphabetically, naturally, by length or at random, and remove duplicates.

Markdown to Plain Text

Strip Markdown formatting (headings, bold, links, lists, code) to get clean plain text.

Morse Code Translator

Translate text to Morse code and back, and play it as sound.

NATO Phonetic Alphabet Converter

Spell out text with the NATO phonetic alphabet (Alfa, Bravo, Charlie…) or turn it back into letters.

Text Wrapper

Wrap long lines at a set width without breaking words, or unwrap hard-wrapped text.

Braille Translator

Convert text to Unicode Braille (Grade 1) and Braille back to text.

ASCII Art Text Generator

Turn words into big ASCII art banners in dozens of FIGlet fonts.

Readability Checker

Score how easy your text is to read: Flesch Reading Ease, Flesch-Kincaid grade, Gunning Fog, SMOG and more.

Keyword Extractor

Pull the key words and phrases out of any text with the RAKE algorithm.

Text Similarity Checker

Compare two texts and see how similar they are, with cosine, Jaccard and phrase overlap scores.

Fancy Text Generator

Turn text into bold, italic, script, bubble and other Unicode styles you can paste anywhere.

Leet Speak Converter

Convert text to 1337 speak with numbers and symbols, or decode leet back to letters.

Gen Z Translator

Turn plain English into Gen Z slang for fun: no cap, it's giving, lowkey and more.

Text to Speech

Read any text aloud with your device's voices, choosing the voice, speed, pitch and volume.

Text to Handwriting Generator

Turn typed text into a handwritten-looking page on lined, grid or plain paper, and download it as an image.

Grammar Checker

Check grammar, spelling and punctuation in English and 20+ other languages, with one-click fixes.

Security & Privacy

20 tools View all

Password Generator

Create strong random passwords with the length and character types you choose.

Password Strength Test

Rate a password and see which strength rules it meets or misses.

MD5 Generator

Create the MD5 checksum of any text, for comparing data and spotting changes.

SHA Generator

Hash text with SHA-256 or SHA-512 for integrity checks and signatures.

Bcrypt Generator

Create a salted bcrypt password hash for test data or configuration.

Hash Generator

Hash text with MD5, SHA-1, SHA-2, SHA-3, RIPEMD, Whirlpool and more.

UUIDv4 Generator

Generate random version 4 UUIDs for database keys and test data.

AES Encryption & Decryption

Encrypt and decrypt text with a passphrase using AES-256-GCM, entirely in your browser.

Secret Key Generator

Generate cryptographically secure keys: hex, Base64, Laravel APP_KEY, Django SECRET_KEY, UUIDs and more.

Content Security Policy Generator

Build a Content-Security-Policy header directive by directive, with report-only mode and ready-to-paste server snippets.

security.txt Generator

Create a security.txt file (RFC 9116) so researchers know how to report vulnerabilities to you.

Email Header Analyzer

Paste an email's headers to see SPF, DKIM and DMARC results, the route it took and delays at each hop.

IDN Homograph Checker

Check whether a domain uses lookalike letters from other alphabets to imitate a real brand.

WebRTC Leak Test

Check whether your browser reveals your real or local IP address through WebRTC, even behind a VPN.

Browser Fingerprint Test

See the details your browser reveals to every website, from screen and fonts to canvas and WebGL, that can be used to track you.

HTTP Methods Checker

See which HTTP methods a URL allows, and whether risky ones like TRACE are enabled.

WAF Detector

Find out which web application firewall, bot protection or security CDN protects a website.

CVE Lookup

Look up a CVE vulnerability by ID, or find the latest CVEs for any product, with CVSS scores.

Htpasswd Generator

Create .htpasswd password lines for Apache and Nginx Basic Auth, with bcrypt, APR1-MD5 or SHA-1 hashes.

DNS Leak Test

Check whether your VPN or proxy leaks your DNS lookups to your internet provider. See which DNS servers you really use.

Unit Converters

24 tools View all

Data Storage Converter

Convert between bits, bytes, KB, MB, GB, TB and larger storage units.

Length Converter

Convert between metric and imperial lengths: mm, cm, m, km, inches, feet, miles and more.

Speed Converter

Convert speeds between km/h, mph, m/s, knots and other units.

Temperature Converter

Convert temperatures between Celsius, Fahrenheit, Kelvin and other scales.

Weight Converter

Convert weights between kilograms, pounds, ounces, stones and more.

Area Converter

Convert square metres, square feet, acres, hectares, marla, kanal and other area units.

Volume Converter

Convert litres, millilitres, gallons, cups, tablespoons, cubic metres, cubic feet and more.

Power Converter

Convert watts, kilowatts, horsepower, BTU per hour, tons of refrigeration and other power units.

Pressure Converter

Convert bar, psi, pascal, kPa, atmospheres, mmHg, inHg and other pressure units.

Pace Converter

Convert running pace between minutes per kilometre and per mile, and to and from speed in km/h or mph.

Fuel Consumption Converter

Convert between L/100 km, km/L, US mpg and UK mpg, including the inverse units.

Time Converter

Convert seconds, minutes, hours, days, weeks, months and years, down to milliseconds and nanoseconds.

Angle Converter

Convert degrees, radians, gradians, arcminutes, arcseconds, turns and mils.

Torque Converter

Convert newton metres, pound-feet, pound-inches, kilogram-force metres and other torque units.

Energy Converter

Convert joules, calories, kilowatt-hours, BTU, therms, electronvolts and other energy units.

Frequency Converter

Convert hertz, kilohertz, megahertz, gigahertz, RPM, radians per second and beats per minute.

Voltage Converter

Convert volts, millivolts, microvolts, kilovolts and megavolts, plus CGS units.

Electric Current Converter

Convert amperes, milliamperes, microamperes and kiloamperes, plus abamperes and statamperes.

Illuminance Converter

Convert lux, foot-candles, phot and other units of light falling on a surface.

Luminance Converter

Convert nits (cd/m²), foot-lamberts, lamberts, stilbs and other units of brightness.

Density Converter

Convert kg/m³, g/cm³, g/mL, lb/ft³, lb/gal and other density units.

Viscosity Converter

Convert dynamic viscosity (Pa·s, poise, centipoise) and kinematic viscosity (stokes, centistokes, m²/s).

Capacitance Converter

Convert farads, microfarads, nanofarads and picofarads, the units on capacitors and schematics.

Force Converter

Convert newtons, kilonewtons, pound-force, kilogram-force, dynes and other force units.

Calculators

16 tools View all

Percentage Calculator

Work out X% of a number, what percent one number is of another, percentage change, increase or decrease.

Loan EMI Calculator

Find the monthly instalment (EMI), total interest and total repayment for a home, car or personal loan.

Sales Tax / GST / VAT Calculator

Add sales tax, GST or VAT to a price, remove it from a price that includes it, or find the rate used.

Binary Calculator

Add, subtract, multiply and divide binary numbers, or apply AND, OR, XOR and bit shifts, with decimal and hex results.

Password Entropy Calculator

Measure a password's entropy in bits and estimate how long it would take to crack, right in your browser.

Standard Deviation Calculator

Paste a list of numbers to get the standard deviation, variance, mean, median, range and more.

Decimal to Fraction Calculator

Convert a decimal, including a repeating decimal like 0.(3), to a simplified fraction and mixed number.

Calorie Calculator

Estimate the calories you burn each day (BMR and TDEE) and targets for losing, keeping or gaining weight.

Tip Calculator

Work out the tip and total for a bill, and split it evenly between any number of people.

Time Duration Calculator

Find the time between two clock times or two dates, minus breaks, in hours, minutes and decimal hours.

Aspect Ratio Calculator

Find the aspect ratio of any width and height, and resize to a new width or height without distortion.

Ohm's Law Calculator

Enter any two of voltage, current, resistance and power to calculate the other two.

Macro Calculator

Split your daily calories into grams of protein, carbohydrates and fat for balanced, high-protein, low-carb or keto diets.

Electricity Cost Calculator

Work out how much an appliance costs to run per day, month and year from its wattage and your electricity price.

Dog & Cat Age Calculator

Convert your dog's or cat's age into human years, taking size into account for dogs.

Zodiac Sign Finder

Find your Western zodiac sign, element and Chinese zodiac animal from your date of birth.

URL & Domains

12 tools View all

Domain Generator

Get domain name ideas built around your keyword.

Domain WHOIS

See who registered a domain, with which registrar, and when it expires.

Domain Age Checker

See when a domain was registered, how old it is, when it expires and its registrar, for up to 10 domains.

Website Hosting Checker

Find out who hosts a website, which CDN it uses, and who runs its DNS and email.

URL Parser

Split a URL into its protocol, host, path, query string and fragment.

SSL Checker

Check whether a site's SSL certificate is valid, who issued it and when it expires.

HTTP Headers Parser

See the HTTP response headers a server sends back for any URL.

Security Headers Checker

Grade a website's HTTP security headers, such as HSTS, CSP and X-Frame-Options, and see how to fix them.

URL Unshortener

Follow a short link and reveal its final destination before you click it.

Redirect Checker

Check whether a URL redirects, and which address it finally lands on.

HTTP Status Code Checker

See the HTTP status code (200, 301, 404 and so on) a URL returns.

Subdomain Finder

Find a domain's subdomains from public certificate logs and DNS, and see which are still live.

Fun & Utilities

22 tools View all

Glitch Text Generator

Turn text into glitchy Zalgo text you can paste into bios, posts and chats.

Bubble Text Generator

Put each letter in a bubble using Unicode characters you can copy anywhere.

Upside Down Text Generator

Flip your text upside down with Unicode lookalike characters.

Currency Converter

Convert between currencies using the European Central Bank's daily reference rates.

Dice Roller

Roll a virtual dice for board games and quick decisions.

Virtual Coin Flip

Flip a virtual coin and keep a running tally of heads and tails.

Aim Trainer

Warm up your mouse aim with on-screen targets and see your hits and accuracy.

Age Calculator

Work out an exact age in years, months and days from a date of birth.

Between Dates Calculator

Count the days, weeks and months between any two dates.

BMI Calculator

Calculate body mass index in metric or imperial units and see its category.

Compound Profit Calculator

See how an amount grows over time when returns are reinvested.

Interest Calculator

Work out the interest earned or owed on an amount, rate and term.

GPA Calculator

Calculate your credit-weighted grade point average from your courses.

Countdown Timer

Set hours, minutes and seconds and count down to zero.

Stopwatch

Time anything to the millisecond with a simple online stopwatch.

Scientific Calculator

Trig, logs, roots, powers and brackets, with keyboard or on-screen buttons.

World Clock

Compare the current local time and UTC offset of countries around the world.

What's My Browser

See which browser and version you are using, for support requests and bug reports.

Credit Card Validator

Check whether a card number is correctly formed, without contacting any bank.

Date Picker Calendar

A simple calendar to browse months and years and pick a date.

YouTube Thumbnail Downloader

View and save the thumbnail image of a YouTube video.

Fake Identity Generator

Generate realistic fake people for testing: name, address, phone, email, job, test card numbers and more, for 9 countries.

Why SEOpeck

Private by design
PDF, video and audio tools, and most image tools, run inside your browser. Those files never leave your device, so contracts, ID scans and personal photos stay yours.
Free, without an account
Every tool is free and works straight away. There is nothing to sign up for and no "3 files a day" limit before a paywall.
Clean results
No watermarks on your PDFs, images or videos, and no forced emails before a download. You get the file, ready to use.
One job, explained
Each tool does one thing well, and its page explains what it does, how to use it and what the results mean.

SEOpeck is built and maintained by Nadeem Akram. Missing a tool, or found something that could work better? Tell me.

Latest guides

All guides

Questions

Is SEOpeck really free?

Yes. Every tool is free to use with no account and no trial. The site is paid for by ads, which you can limit to non-personalised ones in the cookie settings.

Are my files uploaded to a server?

Not for the PDF, video and audio tools or most image tools: they run in your browser and your files stay on your device. Tools that check a website, a domain or an IP address send that address to our server, because the check has to be run from there.

Do I need to create an account?

No. Open a tool and use it. Nothing is locked behind a sign-up.

Do the tools work on my phone?

Yes, every tool works in a mobile browser. The one exception is the screen recorder: phones do not allow a web page to record the screen, so use it on a computer.

Is there a limit on how often I can use a tool?

There are no daily limits on the tools that run in your browser. Tools that check websites have a light rate limit so the service stays fast for everyone.

Can I suggest a new tool?

Yes, please do. Send it through the contact form; new tools are added every week.