About ToolKoala — Free Browser-Based Tools

ToolKoala is a free toolkit of 60+ browser-based utilities covering image editing, PDF workflows, text manipulation, and developer helpers. Every tool runs entirely on your device — your files never leave your browser.

Why we built this

Most online converters and image editors upload your files to a server you don't control. That's a privacy risk for anything personal — photos of friends, identity documents, work-in-progress designs. Modern browsers can do the same jobs locally using WebAssembly and WebGPU, so we built ToolKoala to prove it.

How it works

When you open a tool, ToolKoala downloads the code (and for AI tools, a small machine-learning model) to your browser once. After that, every file you drop in is processed on your CPU or GPU — in memory, in your tab. Nothing is uploaded, nothing is logged, and closing the tab clears everything.

What's included

Current tools include AI background removal, image compression and format conversion, PDF merging and splitting, JSON/YAML formatting, password and hash generators, and many more. The full list is on the home page, grouped by category.

The team

ToolKoala is built and maintained by a small independent team. We fund the project with unobtrusive display ads — no subscriptions, no locked features, no watermarks. If you'd like to reach us, see the contact page.