- Start coding with AI agent
- Start writing
- Manage TODO lists
- Bookmark links, notes and images
- Manage academic research resources
- Connect your notes
- Listen to forests
- Make websites readable
- Watch news channels online
- Download 3D icons
- Manage your clipboard
- Manage loyalty card and tickets
- Learn music theory
Learning Music
Interactive music theory and composition learning through hands-on exercises
Learning Music - Build personal knowledge network
- Transform data
- Listen radio stations
- Listen radio stations
Radio Garden
Explore and listen to live radio stations from thousands of locations worldwide
Radio Garden
- Listen podcasts
- Authenticate 2FA
- Share files
- Run global latency test
- Check browser version
- Customize websites
- Process PDF files
- Edit PDF files
- Create an app
- Share files
- Sync files
- Generate CSS only buttons
- Compress images
- Get loader css code
- Generate CSS only accordion sliders
- Convert color code
- Blend colors
- Generates color scales
- Get information about any emoji
- Download brand logos
- Compress images
- Text regex patterns
- Create duotone images
- Edit video
- Share files
- Take screenshots or record screen
- Read PDF files
- Edit your photos
- Remove background from images
- Toggle dark mode
- Edit audio
- Make JSON files readable
- Pick colors from any webpage
- Play video
- Find icons for your web projects
- Edit code
- Run virtual machine
- Convert video
- Edit video
- Edit audio
- Design or prototype
- Create diagrams
Sumatra PDF
Lightning-fast PDF reader that respects your system resources
A lightweight PDF reader for Windows that opens documents instantly. It handles not only PDFs but also EPUB, MOBI, XPS, DjVu, CHM, and comic book formats with minimal interface.
What we love ❤️
- Lightning fast - opens even large PDFs instantly
- Extremely light on system resources
- Clean interface without any distractions
- Completely free and open source
- Supports multiple document formats out of the box
Worth noting 💡
- Windows only - no Mac or Linux version
- Basic PDF editing features are not included
- Some users might find the interface too minimal
- No cloud integration or advanced annotation features
SumatraPDF shows what happens when you focus purely on reading performance. While other PDF readers have become bloated with features, this one maintains its focus on being fast and lightweight. It's a perfect example of how sometimes less is more - especially when you just want to read documents quickly.