QR code generator
Make a downloadable QR code for a link or text.
DeveloperKITFORMA / ALPHA
Developer tools
Choose a tool below. Each page explains the steps, gives an example and describes its limits. Processing happens in your browser.
118+ 10Tools and games
Developer
24 Results
JSON Formatter
Validate JSON and format it with consistent indentation.
DeveloperJSON Minifier
Validate JSON and remove unnecessary formatting whitespace.
DeveloperCSV to JSON
Convert a header-based CSV table into an array of JSON objects.
DeveloperJSON to CSV
Convert a JSON array of objects into an escaped CSV table.
DeveloperBase64 Encoder
Encode Unicode text as UTF-8 Base64.
DeveloperBase64 Decoder
Decode standard or URL-safe Base64 into UTF-8 text.
DeveloperURL Encoder
Percent-encode a URL component or a complete URL.
DeveloperURL Decoder
Decode percent-encoded text with an optional form-style plus conversion.
DeveloperHTML Escape
Encode five HTML-sensitive characters as entities.
DeveloperHTML Unescape
Decode common named entities and valid numeric character references.
DeveloperHTML Minifier
Conservatively remove standalone HTML comments while preserving document whitespace.
DeveloperCSS Minifier
Conservatively compact CSS formatting outside strings and custom values.
DeveloperCSS Beautifier
Indent CSS blocks and put declarations on separate lines.
DeveloperJWT Decoder
Inspect the header and payload of a three-part JSON Web Token.
DeveloperUUID Generator
Generate random version 4 UUIDs using Web Crypto.
DeveloperPassword Generator
Generate passwords with a selected set of character groups.
DeveloperHash Generator
Calculate a SHA digest of UTF-8 text using Web Crypto.
DeveloperRegular Expression Tester
Test a bounded regular-expression subset without backtracking.
DeveloperQuery String Parser
Inspect URL query parameters while preserving repeated keys.
DeveloperTimestamp Converter
Convert Unix seconds or milliseconds to UTC, or an explicit ISO date to Unix time.
DeveloperColor Converter
Convert opaque hex, RGB, or HSL colors to common CSS formats.
DeveloperColor Contrast Checker
Calculate the WCAG contrast ratio between two opaque sRGB colors.
DeveloperData Size Converter
Convert bits, bytes, decimal units, and binary units.
DeveloperA little break?
2048, Sudoku, memory cards and more. Ten games, right in your browser.
Files stay on your device
Image and text processing happens in your browser. Your files are not uploaded to our servers.
Free. No account needed.
Choose a tool and get your result. Each page explains how it works and where its limits are.
Built to keep improving
This is an alpha release. Found an issue or an unclear translation? Tell us through the contact page.