Developer ToolsThat Respect Privacy
Collection of free, open-source utilities that run entirely in your browser. No uploads, no tracking, no accounts needed.
Why Choose Our Tools?
Built with modern web technologies to provide the best user experience
Privacy First
All tools run entirely in your browser. No data is uploaded to our servers, ensuring your privacy and security.
Lightning Fast
Client-side processing means instant results. No waiting for server responses or dealing with upload limits.
Works Everywhere
Fully responsive design works on desktop, tablet, and mobile. Use our tools anywhere, anytime.
Popular Tools
Choose from our collection of developer utilities
Base64 Encoder/Decoder
Convert text or files to and from Base64
JSON Formatter
Beautify, validate, sort keys, or minify JSON
JSON Tree Viewer
Visualize JSON with expandable tree structure
YAML ⇄ JSON
Convert YAML to JSON and back with options
Image Editor
Edit images with color adjustments and presets
Image Compressor
Compress images with quality control
Image Resizer
Resize images and crop to rectangle or circle
YouTube Thumbnails
Download YouTube video thumbnails
Text Diff Checker
Compare two texts with highlighted differences
Cron Schedule
Create and understand cron expressions
URL Encoder/Decoder
Encode or decode URL components
PDF Annotator
Annotate PDFs with text, images, and drawings
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