All Tools

All Developer Tools

Browse all 28 free developer tools. Everything runs in your browser — no signup, no server calls, no data collection.

Encoding & Conversion

b64
Base64 Encoder / Decoder
Encode and decode Base64 strings instantly.
Popular
⏱
UNIX Timestamp Converter
Convert between UNIX epoch and human-readable dates.
%
URL Encoder / Decoder
Encode and decode URL percent-encoded strings.
🎨
Hex to RGB Converter
Convert hex color codes to RGB, RGBA, and HSL.
&
HTML Entity Encoder / Decoder
Encode and decode HTML entities and special characters.
🖼
Image to Base64 Encoder
Convert images to Base64 data URIs for embedding.
CSV
JSON to CSV Converter
Convert JSON arrays to downloadable CSV files.
01
Number Base Converter
Convert between binary, decimal, hex, and octal.

Generation & Formatting

uid
UUID Generator
Generate random v4 UUIDs and GUIDs.
{ }
JSON Formatter & Validator
Pretty print, validate, and format JSON data.
Popular
Aa
Lorem Ipsum Generator
Generate placeholder text for mockups and designs.
🔑
Password Generator
Create strong, secure random passwords.
QR
QR Code Generator
Generate QR codes for URLs, text, and Wi-Fi.
🎨
Color Palette Generator
Generate color palettes with harmony and contrast tools.
🔗
URL Slug Generator
Create SEO-friendly URL slugs from any text.

Security & Hashing

jwt
JWT Decoder & Inspector
Decode and inspect JWT tokens, headers, and claims.
Popular
#
Hash Generator — MD5 / SHA
Generate MD5, SHA-1, SHA-256, and SHA-512 hashes.

Code & Text Tools

.*
Regex Tester & Debugger
Test and debug regular expressions with live matching.
Popular
±
Text Diff Checker
Compare two texts side by side and highlight differences.
MD
Markdown Editor & Preview
Write and preview GitHub Flavored Markdown live.
?=
Regex Explainer
Translate regular expressions into plain English.
Aa
String Case Converter
Convert between camelCase, snake_case, kebab-case, and more.
\\
String Escape & Unescape
Escape and unescape strings for JSON, HTML, and URLs.

Optimization & DevOps

CSS
CSS Minifier & Beautifier
Minify or beautify CSS code instantly.
JS
JavaScript Minifier & Beautifier
Minify or beautify JavaScript code.
⏰
Cron Expression Generator
Build and parse cron expressions with a visual editor.

Network & Time

IP
IP Address Lookup & Analyzer
Look up IP address details, geolocation, and subnet info.
New
⏱
Timestamp Diff Calculator
Calculate the difference between two timestamps.
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