Developer Tools

Format, validate and minify JSON instantly.

Test regular expressions against text and see every match live.

Beautify and indent SQL queries for many dialects.

Format messy XML and check that it is well-formed.

Format and validate YAML, and catch syntax errors.

Encode text to Base64 or decode Base64 back to text.

Percent-encode or decode URLs and query strings.

Turn a query string or URL into a readable table of parameters.

Beautify and indent messy HTML markup.

Beautify and indent minified or messy CSS.

Beautify and indent minified or messy JavaScript.

Compare two texts and highlight the differences line by line.

Escape text into a JSON string or unescape a JSON string back to text.

Escape text to HTML entities or decode entities back to characters.

Remove markup, scripts and styles while preserving useful block breaks and decoding common entities.

Parse raw HTTP request or response headers into a readable table.

Convert a curl command into JavaScript fetch, axios or Python requests code.

Search HTTP status codes and read what each one means.

Create a temporary private request bin and inspect incoming HTTP requests in real time.

Create an expiring endpoint that returns your chosen status, headers and static response body.

Create a temporary short link for approved, trusted HTTPS services.

Build an encoded URL query string from a JSON object, including repeated array parameters.

Encode an internationalized hostname to ASCII Punycode or decode xn-- labels to Unicode.

Escape non-ASCII characters as JavaScript Unicode sequences or restore supported escape forms.

Convert phrases and identifiers among camelCase, PascalCase, snake_case, kebab-case and other conventions.

Look up a common MIME type from a file extension or find known extensions for a MIME type.

Parse a User-Agent string into browser, engine, OS and device.

Generate a plausible desktop or mobile User-Agent string from a browser, operating system and version.

Evaluate a dot or bracket path against a JSON document to pull out a value.

Infer a draft 2020-12 JSON Schema from the types and structure of an example JSON value.

Convert JSON into Kotlin data classes for Android apps.

Convert JSON into Swift Codable structs for iOS apps.

Convert a .env file to a JSON object and back, handling comments and quotes.

Wrap valid JSON in a validated JavaScript callback for legacy JSONP integrations.

Validate FCM (Android) and APNs (iOS) push notification JSON payloads.

Compute AND, OR, XOR, NOT and shifts with decimal, hex and binary output.

Convert numbers between binary, octal, decimal and hexadecimal.

Convert Unix timestamps to dates and back, in seconds or milliseconds.

See the next run times for a cron expression in plain dates.

Parse, compare and bump semantic versions like 1.4.2.

Validate iOS bundle identifiers and Android package names.

Check colour contrast ratio against WCAG AA and AAA accessibility levels.

Convert a hex colour to SwiftUI, UIKit, Jetpack Compose and Android XML code.

Extract inline link text, destination URLs and optional titles from Markdown.

Parse SRT or WebVTT blocks, report structural timing and text errors, then convert valid cues between both formats.

Break a URL into protocol, host, path, query and fragment.