A single, fast developer toolkit that puts 7 essential web-dev utilities in one sidebar panel — JSON Formatter, Base64 Encode/Decode, URL Encoder, JWT Decoder, UUID Generator, Text Diff, and HTML Prettify/Minify.
💡 Convert, format, encode, decode and generate data without leaving your editor. Everything runs 100% locally — your data never leaves your machine.
🔧 Included Tools
Tool
What it does
JSON Prettify / Minify
Beautify or compress JSON with color-coded syntax highlighting + invalid-input detection
Base64 Encode / Decode
Encode/decode text to/from Base64 (UTF-8 safe, handles Unicode)
URL Encode / Decode
Encode and decode URLs and query strings instantly
JWT Decode
Inspect JWT Header, Payload and Signature with real-time color-coded output
UUID Generator
Bulk-generate UUID v4 tokens with count, uppercase and no-dash options
Text Diff
Git-style side-by-side comparison highlighting additions and deletions
HTML Prettify / Minify
Beautify or compress your HTML with syntax highlighting
✨ Key Features
🔒 100% local & private — no data ever sent to a server
📋 One-click copy to clipboard on every tool
🔁 Move output to input to chain multiple transformations
🌙 Developer-friendly dark interface that matches your theme
🚀 Fast & lightweight — instant results
🆓 Free — no account or registration required
🚀 Usage
Open the Command Palette (Ctrl+Shift+P / Cmd+Shift+P)
Run Dev Editor Tools: Open Tools Panel
Or click the logo in the Activity Bar (sidebar)
Or press Ctrl+Alt+D / Cmd+Alt+D
Pick a tool from the dropdown and start transforming
🛠️ Perfect For
Developers working with JSON APIs and REST payloads
Engineers decoding JWT auth tokens
Anyone generating UUIDs for IDs, DB keys, or distributed systems
QA and testers checking URL encoding and Base64 payloads
Cleanup of messy HTML output
📋 Requirements
Visual Studio Code 1.85.0 or later (including VSCodium and other Code-OSS forks).
