About CrayonPix

CrayonPix is a collection of free photo tools, each built to do one everyday job well: putting two photos side by side, blurring faces before posting, opening an iPhone HEIC photo on Windows, or checking how large a photo can be printed.

Everything happens on your device

Every tool runs inside your web browser using the Canvas API and WebAssembly. Your images are read, edited and saved on your own computer or phone. They are never uploaded to a server, which is why the tools are fast, private and work offline once the page has loaded.

Why it is free

Because the processing runs on your device, the tools cost almost nothing to operate. There is no account, no watermark and no daily limit set by us.

Guides

Our guides answer the questions that come up around these tasks — print sizes, image formats, social media dimensions and photo privacy — and are checked against official documentation when it exists.