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Developer Tools

The utilities you keep a browser tab open for. All client-side, all instant.

14 free tools, all working

Format & minify

JSON Formatter Format, validate and minify JSON. In your browser XML Formatter Format and validate XML. In your browser HTML Formatter Format or minify HTML. In your browser CSS Formatter Format or minify CSS. In your browser JavaScript Formatter Format JavaScript. In your browser

Encode & decode

Base64 Encoder and Decoder Encode and decode Base64. In your browser URL Encoder and Decoder Percent-encode and decode URLs. In your browser

Generate

Hash Generator Generate SHA-1, SHA-256, SHA-384 and SHA-512 hashes. In your browser UUID Generator Generate version 4 UUIDs. In your browser Password Generator Generate strong random passwords. In your browser

Inspect

JWT Decoder Read the contents of a JSON Web Token. In your browser Timestamp Converter Convert Unix timestamps to dates and back. In your browser Regex Tester Test regular expressions with live highlighting. In your browser

Convert

Color Converter Convert between HEX, RGB, HSL and HSV. In your browser

About our developer tools

The utilities you keep a browser tab open for. All client-side, all instant.

Every tool on this page is free and needs no account. Tools that process a file do so on separate infrastructure, and your upload is deleted as soon as it has been handled. Tools that can run inside your browser do exactly that, which means nothing is uploaded at all.

Other categories

PDF 25 tools Compress, merge, split, convert and secure PDF files. Compress PDF · Merge PDF · Split PDF · Extract PDF Pages · Delete PDF Pages View tools Image 7 tools Compress, resize, crop and convert images. Compress Image · Resize Image · Crop Image · Rotate Image · Convert Image View tools Document 4 tools Convert Word, Excel, PowerPoint and text files. Word to PDF · Excel to PDF · PowerPoint to PDF · Text to PDF View tools Text 9 tools Count, clean, convert and compare text. Word Counter · Character Counter · Case Converter · Text Cleaner · Sort Lines View tools Developer 14 tools Format, minify, encode, hash and decode. JSON Formatter · XML Formatter · HTML Formatter · CSS Formatter · JavaScript Formatter View tools SEO 6 tools Meta tags, schema, sitemaps and previews. Meta Tag Generator · SERP Preview · Schema Markup Generator · Robots.txt Generator · Keyword Density Checker View tools Calculators 9 tools Percentages, loans, dates, units and more. Percentage Calculator · Age Calculator · BMI Calculator · Loan Calculator · Discount Calculator View tools Web 1 tool URLs, QR codes, colours and web utilities. QR Code Generator View tools