Developer Tools

Free, browser-based tools for developers — encoding, text processing, converters and generators, all running locally in your browser.

🔐
JWT Decoder
Decode and inspect JWT tokens instantly — view header, payload, and signature.
 ⏱️
Unix Timestamp Converter
Convert Unix timestamps to human-readable dates and vice versa, with timezone support.
 🔍
Diff Checker
Compare two blocks of text and highlight added, removed, and unchanged lines.
 #️⃣
Hash Generator
Generate MD5, SHA-1, SHA-256, and SHA-512 hashes from any text input instantly.
 📦
Base64 Encode / Decode
Encode text to Base64 or decode Base64 back to text. Also supports image to Base64.
 🎲
UUID Generator
Generate one or many UUIDs instantly — supports v1, v4, and v5.
 📖
Reading Time Calculator
Estimate how long it takes to read any text — shows slow, average, and fast reading times.
 💻
Text to Binary
Convert text to binary, hex, and decimal representations instantly.
 📋
JSON Formatter
Format, minify and validate JSON instantly.
 🎨
CSS Gradient Generator
Generate CSS gradients visually with live preview.
 📝
Lorem Ipsum Generator
Generate lorem ipsum placeholder text instantly.
 🍺
Mussum Ipsum
Gerador de Mussum Ipsum — placeholder text no estilo do imortil Mussum.
 🇧🇷
Dilmes Ipsum
Gerador de Dilmes Ipsum — placeholder text com frases da presidenta Dilma.
 ✍️
Markdown Editor
Write markdown and preview the output in real time.
 🔎
Regex Tester
Test regular expressions with live match highlighting.
 ⏰
Cron Expression
Build and decode cron expressions with a visual editor.
 🖌️
Color Picker
Pick colors and convert between HEX, RGB, and HSL.