qktools is a completely free, privacy-focused online toolset. We believe that file processing shouldn't come at the cost of privacy—all tools run locally in your browser, and files are never uploaded to any server.
Our Philosophy
Most online tools upload your files to servers for processing, which means sensitive data like contracts, documents, and photos leaves your control. qktools takes a different path: it places the entire processing logic within the browser, keeping data on your device from start to finish.
This is not only more secure but also faster—no waiting for uploads or downloads, and it works even offline.
What We Offer
qktools covers ten major categories and hundreds of tools: PDF merge/split/compress/convert, image compress/format convert/crop/cutout, audio/video processing, common developer tools for encoding/formatting/conversion, unit conversion, text processing, security encryption, and daily utilities like QR codes and calculators.
All tools follow the same principles: free, watermark-free, no registration required, and locally processed.
Privacy Promise
We don't collect your files; we don't upload, store, or analyze your content. Every file you process and every text you input exists only in your current browser session and is cleared when the page is closed.
Global Reach
qktools provides a multi-language interface and continuously optimizes to serve users from different countries and regions. No matter which language you use or where you are, you get a consistent, smooth, and secure tool experience.