CR2 to PNG Converter — Free, Lossless Output, No Upload

CR2 is Canon's RAW format — the unprocessed sensor data your EOS DSLR or mirrorless camera writes when you shoot in RAW instead of JPEG. It holds far more detail and dynamic range than a finished image, which is exactly why photographers use it. But that also means a CR2 isn't really a "picture" yet: it's raw data that has to be rendered, and almost nothing outside dedicated photo software will open it.

Double-click a .cr2 on a machine without the right tools and you get nothing — no preview, no thumbnail, an "unsupported format" error. Opening and editing CR2 normally means Adobe Lightroom, Canon's own Digital Photo Professional, Photoshop's Camera Raw, or Capture One. If you just need to hand a shot to a client, drop it into a design tool, post it online, or edit it somewhere that doesn't speak RAW, you have to render it to a normal image first.

PNG is the lossless target for that. Converting CR2 to PNG gives you an image that opens in every browser, editor, and app. It is made from the full-size JPEG most CR2 files carry, so the camera's light JPEG compression is already in it, but the PNG adds none of its own — safe for further editing or compositing.

This is a copy-then-store step, not a RAW development. Browsers can't develop RAW sensor data, so the converter takes the full-size JPEG that most CR2 files carry and writes it to PNG without adding any compression — the reason to choose PNG over JPG here is that further edits won't stack a second round of JPEG loss.

Two things to expect. First, size: PNG is lossless, so a 20+ megapixel Canon shot typically produces a 50–70 MB PNG — much larger than the CR2, and far larger than a JPG. Second, the render is a fixed interpretation of the RAW: you're locking in one version of exposure and colour, so you lose the wide latitude a CR2 gives you to recover highlights or shift white balance later. Keep the original CR2 as your master and treat the PNG as the shareable, edit-ready export. (It works in Chrome, Edge, Firefox and Safari. Most CR2 files are above the free 10 MB limit, so they need Pro.)