Developer Tools
Format JSON, encode Base64 and URLs, generate UUIDs, passwords, hashes and QR codes, test regex and more.
JSON Formatter & Validator
Format, minify and validate JSON with line and column errors.
Open toolBase64 Encoder / Decoder
Encode text to Base64 and decode it back, Unicode-safe.
Open toolURL Encoder / Decoder
Percent-encode text for URLs and decode it back.
Open toolHTML Escape / Unescape
Escape <, >, & and quotes for safe HTML, or unescape entities.
Open toolUUID Generator
Generate random v4 UUIDs, one or many at once.
Open toolUnix Timestamp Converter
Convert Unix timestamps to dates and back.
Open toolPassword Generator
Create strong random passwords with crypto-secure randomness.
Open toolHash Generator
Compute SHA-1, SHA-256, SHA-384 and SHA-512 hashes of text.
Open toolColor Converter
Convert colours between HEX, RGB and HSL with a live preview.
Open toolCSV ⇄ JSON Converter
Turn CSV rows into JSON objects and JSON arrays back into CSV.
Open toolMarkdown Preview
Write Markdown and see the rendered result side by side.
Open toolRegex Tester
Test regular expressions with live matches and group capture.
Open toolQR Code Generator
Create a QR code for a link or text and download it as PNG.
Open toolText to Slug Generator
Turn titles into clean, URL-friendly slugs.
Open toolUTM Link Builder
Build campaign tracking links with utm_source, medium and campaign.
Open toolHTML Minifier
Remove comments and extra whitespace from HTML.
Open toolCSS Minifier
Strip comments and whitespace from CSS safely.
Open toolJavaScript Minifier
Remove comments and extra whitespace from JavaScript.
Open toolOpen Graph Preview
Preview how a link looks when shared and generate the meta tags.
Open toolPlaceholder Image Generator
Create dummy images of any size and colour.
Open tool