Base64 Encode / Decode
Encode text to Base64 or decode it back — instantly, in your browser.
Open tool →Tools Lab
A growing library of focused developer tools. Each one is free and runs entirely in your browser — nothing you paste is ever uploaded.
Basic Auth Header Generator
Turn a username and password into a Basic Authorization header.
Open tool →Binary to Text Converter
Convert text to binary and binary back to text.
Open tool →Case Converter
Convert text between camelCase, snake_case, kebab-case, and more.
Open tool →Color Converter
Convert colors between HEX, RGB, and HSL — with a live swatch.
Open tool →Cron Explainer
Decode a cron expression into plain English and see its next runs.
Open tool →Date Difference Calculator
Count the days, weeks, and months between two dates.
Open tool →Hash Generator
Compute SHA-256, SHA-1, SHA-384, and SHA-512 hashes in your browser.
Open tool →HTML Entity Encoder / Decoder
Escape and unescape HTML entities — safely, in your browser.
Open tool →JSON ↔ YAML Converter
Convert between JSON and YAML — both directions, in your browser.
Open tool →JSON Formatter
Format, validate, and minify JSON — instantly, in your browser.
Open tool →JSON String Escape / Unescape
Escape or unescape a string for embedding in JSON.
Open tool →JSON to TypeScript
Turn a JSON sample into TypeScript interfaces — instantly.
Open tool →JWT Decoder
Decode a JSON Web Token and read its claims — locally, never uploaded.
Open tool →Lorem Ipsum Generator
Generate placeholder text — paragraphs, sentences, or words.
Open tool →Meta Tag Generator
Generate SEO, Open Graph, and Twitter meta tags — instantly.
Open tool →Number Base Converter
Convert between binary, octal, decimal, and hex — live.
Open tool →Password Generator
Generate strong, random passwords — instantly, in your browser.
Open tool →Percentage Calculator
Work out percentages, ratios, and changes — instantly.
Open tool →Query String Parser
Break a URL query string into readable key/value pairs and JSON.
Open tool →Regex Tester
Test a regular expression against text and see every match.
Open tool →Slug Generator
Turn any title into a clean, URL-safe slug — live.
Open tool →Sort & Dedupe Lines
Sort, deduplicate, and trim lines of text — instantly.
Open tool →Text Diff
Compare two blocks of text and see exactly what changed.
Open tool →Unix Timestamp Converter
Convert Unix timestamps to dates and back — in your browser.
Open tool →URL Encode / Decode
Percent-encode text for URLs or decode it back — in your browser.
Open tool →UTM Link Builder
Build campaign-tracking URLs with UTM parameters — instantly.
Open tool →UUID Generator
Generate random UUID v4 identifiers — instantly, in your browser.
Open tool →Word & Character Counter
Count words, characters, sentences, and reading time — live.
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