Private, free file tools
for everyone.
ConverterTools is a suite of browser-based converters built on one simple principle: your files belong to you. Nothing is uploaded, nothing is stored, nothing is sold.
Why we built ConverterTools
Most "free" online converters ask you to upload your documents to their servers. That means your contracts, IDs, photos, and business files pass through infrastructure you don't control — stored for unknown periods, possibly logged, possibly shared.
We believed there was a better way. Modern browsers are now powerful enough to perform serious file processing locally, using WebAssembly, the Canvas API, and modern JavaScript libraries.
So we built ConverterTools: a growing suite of tools where every conversion happens on your device. Close the tab and your files are gone — because they were never anywhere else.
- ✕ Files uploaded to remote servers
- ✕ Processed on machines you don't control
- ✕ Stored for unknown periods
- ✕ Accounts, emails & paywalls
- ✓ Files never leave your device
- ✓ Processed inside your browser
- ✓ Nothing stored — close the tab, it's gone
- ✓ No accounts, no watermarks, ever
What we stand for
Four principles guide every decision we make.
Privacy by design
Client-side processing isn't a feature — it's the architecture. We couldn't read your files even if we wanted to.
Free forever
No premium tier, no watermarks, no conversion limits. Useful tools should be accessible to everyone.
Open & transparent
Built on open-source libraries like pdf-lib, jsPDF and PDF.js. No dark patterns, no hidden tracking.
Fast by default
No upload queues, no server round-trips. Conversions start the moment you drop your file.
How it works under the hood
Three steps, zero servers.
Your browser loads the tool
Open-source engines (pdf-lib, jsPDF, PDF.js, ONNX Runtime) run as pure client code — including our AI background remover.
Files are read locally
The File API reads your document straight from disk into memory. No network request is ever made with your content.
Results download instantly
Conversion runs on your device's CPU via Canvas & WebAssembly. The output is saved directly to your downloads.
What's coming next
We ship improvements every week.
Try it yourself
Fourteen tools. Zero uploads. See the difference privacy-first design makes.