24 free browser-based tools — no signup required, no data leaves your device.
Format, validate & minify JSON
Test regex patterns live
Format & minify CSS
Minify HTML files
Beautify JavaScript code
Write & preview Markdown
Convert CSV data to JSON
Create diagrams with Mermaid
HEX ↔ RGB ↔ HSL
Generate QR codes
Scan QR codes via camera
Add watermark to images
Compress images in browser
Convert image formats
Resize images to any size
Remove image backgrounds with AI
Merge multiple PDFs
Split PDF into pages
Extract text from PDF
Convert HTML to PDF
Build professional CV
Save & manage code snippets
Capture website screenshots