About Toolstacky
We build fast, simple, and private online tools so you can work smarter with PDFs, images, and text—right in your browser.
Last updated: October 7, 2025
Our Mission
Deliver trustworthy utilities that anyone can use in seconds—no steep learning curve, no bloat.
Built for Speed
Lightweight pages, smart caching, and modern browsers APIs keep everything snappy on desktop and mobile.
Privacy First
Your files and text belong to you. We minimize data collection and honor deletion windows.
What you can do with Toolstacky
- Merge PDF — combine multiple documents into one.
- Split PDF — extract pages precisely.
- Compress PDF — reduce size, keep quality.
- Rotate PDF — fix orientation quickly.
- Resize Images — single & bulk resizing by dimensions or %.
- Resume/CV Builder — professional templates in minutes.
- QR Code Generator — share links and text instantly.
- Text Case Converter — change case, count words/chars.
- Unit Converter — convert length, weight, time & more.
Why users choose us
- Free, browser-based tools with no installs.
- Clear UX and accessible design.
- Fast processing backed by modern web technologies.
- Transparent privacy practices.