Format Converters

Developers spend a surprising amount of time moving data from one shape to another: a CSV export that an API wants as JSON, an XML feed that a script wants as JSON, or Markdown notes that have to become HTML. These converters handle those jobs in one step.

23 tools

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.

Unix Timestamp Converter

Convert a Unix timestamp (epoch time) to a readable date and back, and see the current epoch time.

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.

A common job

Turn an API response into a spreadsheet

Make the JSON readable and find any error, then convert it to CSV for Excel or Google Sheets.

Guides: How to fix invalid JSON JSON vs XML vs CSV

More about Format Converters

The formatters and minifiers work as opposites. Use the formatters and the JSON Beautifier when you need to read or debug code, and the minifiers when you want smaller files in production. The JSON Validator points at the exact spot where a document breaks, and the Timestamp Converter and colour converters save a trip to the documentation.

For configuration files, JSON to YAML and YAML to JSON move data between the two most common formats, JSON to TSV and TSV to JSON make spreadsheets and APIs talk to each other, and the SRT to VTT and VTT to SRT converters fix subtitle files for web players and video editors.