Herramientas para desarrolladores
Small utilities developers use once and need right now: encoders, formatters and color math that run entirely client-side.
Base64 Encoder / Decoder
Encode text to Base64 or decode it back, URL-safe optional.
URL Encoder / Decoder
Percent-encode or decode URLs and query parameters.
JSON Formatter & Validator
Pretty-print or minify JSON and pinpoint syntax errors.
Color Converter
Convert HEX, RGB and HSL both ways, with a live swatch.
HTML Entity Encoder
Escape (or unescape) & < > " ' for safe HTML.
Decimal to Binary Converter
Convert decimal numbers to binary, with hex and octal alongside.
Binary to Decimal Converter
Turn 0s and 1s back into a decimal number, validated as you type.
Decimal to Hexadecimal Converter
Convert base-10 numbers to hex with prefix and case options.
Hexadecimal to Decimal Converter
Decode hex values (0x optional) back to decimal and binary.
URL Slug Generator
Turn any title into a clean, URL-safe slug.
CSV to JSON Converter
Convert spreadsheets to JSON arrays, quotes and all.
JSON to CSV Converter
Flatten JSON arrays into rows for spreadsheets.
Markdown to HTML Converter
Render Markdown and copy the generated HTML.
HTML to Markdown Converter
Turn HTML markup into clean Markdown.
JWT Decoder
Decode a JSON Web Token’s header and payload locally.
Regex Tester
Test regular expressions live with matches and replace preview.
JWT Encoder
Build and HMAC-sign a JSON Web Token in the browser.
JSON to XML Converter
Turn JSON into indented XML, with arrays as repeated elements.
XML to JSON Converter
Convert XML into JSON, collapsing repeated elements into arrays.
YAML to JSON Converter
Parse YAML into JSON, including nested maps and lists.
JSON to YAML Converter
Render JSON as clean, human-readable YAML.
Cron Expression Parser
Explain a cron expression in plain English and list its next runs.
Unix Permission Calculator
Convert chmod modes between octal, symbolic and rwx notation.
Color Contrast Checker
WCAG 2.1 contrast ratio for any two colors, with AA and AAA verdicts.