BYTEKIT
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⚡ 17 Free Tools
100% Browser-Based · No Login · No Tracking

The developer toolkit
built for speed

ByteKit gives you 17 powerful, instant tools — JSON, CSS, JS & HTML Formatters, Regex, JWT, Base64, Hashes, Colors, URL & Markdown. Everything runs in your browser. Nothing leaves your machine.

17
Free Tools
0ms
Server Lag
$0
Forever Free
100%
Private
🔍
// tools
All 17 Tools
Click any tool to open it instantly. Each tool has its own dedicated page optimised for speed and SEO.
{ }
JSON Formatter
Format, minify, sort keys and validate JSON with live stats.
Most Popular
✦
CSS Formatter
Beautify and format messy CSS code with custom indentation.
New
JS
JS Formatter
Beautify or minify JavaScript code. Clean up messy JS instantly.
New
</>
HTML Formatter
Indent and beautify HTML markup. Also minifies for production.
New
/…/
Regex Tester
Live regex matching with flag controls and group capture display.
Real-time
⇌
Base64 Encoder
Encode text to Base64 or decode Base64 back to plain text.
Encode/Decode
🔐
JWT Decoder
Decode JWT tokens — header, payload and expiry validation.
Decode
#
Hash Generator
Generate SHA-1, SHA-256 & SHA-512 via browser's native Crypto API.
SHA 1·256·512
◉
Color Converter
Convert HEX ↔ RGB ↔ HSL with live preview & CSS variable export.
HEX·RGB·HSL
🔗
URL Encoder
Encode, decode and parse URL query parameters with clean output.
Parse/Encode
📝
Markdown Preview
Write Markdown and see a live rendered preview side-by-side.
Live Preview
⊟
CSS Minifier
Strip comments and whitespace from CSS with exact byte savings shown.
Minify
🖼️
Image Resizer
Resize images to any width & height. Supports JPG, PNG, WebP. Download instantly.
New
🌐
HTTP Request Builder
Build and send HTTP API requests with custom headers, body and params. Free Postman alternative.
New
⚖
JSON Comparison
Compare two JSON objects and see added, removed and changed keys highlighted side by side.
New
📄
PDF Page Editor
Remove or extract specific pages from any PDF. Visual page thumbnails. 100% browser-based.
New
〈/〉
XML Tools Suite
XML Validator, XPath Finder, XPath Tester and XML String Search — all in one place.
4-in-1 · New
// developer blog
Tutorials & Guides
Learn the technology behind the tools — practical guides written for developers.
JSON
What is JSON? Complete Beginner's Guide
8 min read →
Security
JWT Tokens Explained: Structure & Auth
10 min read →
REST API
REST API Guide: Methods & Status Codes
11 min read →
View all 6 articles →
// features
Why ByteKit?
Designed around real developer workflows
⚡
Zero Latency
No server round-trips. Every tool runs entirely in your browser — instant results every time.
🔒
Private by Design
Your code, tokens and data never leave your machine. No analytics on your input data.
📱
Works Everywhere
Fully responsive on desktop, tablet and mobile. No install required — works in any browser.
💸
Always Free
All 12 tools free forever. No paywalls, no sign-up, no credit card ever required.