Shooting HEIF on a Sony or Canon body and handing the frames to a retoucher, a print shop, or software that predates the format? Drop the .heif and .hif stills anywhere on this page and each one comes back as a lossless PNG at full resolution. No quality slider exists here because there is nothing to trade away. No upload, no file cap, no signup.
.heif, .hif, .heic: one family, three badges
All three are HEIF, the High Efficiency Image File format. Apple ships it as .heic, Sony and Canon stamp .hif on theirs, and some software exports the plain .heif extension. This page decodes the whole family; the only decision left is the output, and when the file is headed into an editing pipeline that output is PNG. Headed for email or an upload form instead? HEIF to JPG makes files a fraction of the size.
Why retouchers ask for PNG
Every save in a lossy format stacks another round of compression onto the pixels. When a frame still has cropping, grading, and a final export ahead of it, starting from a lossless PNG means the only compression it ever sees is the camera's own. That is why editing handoffs, compositing work, and print prep specify PNG, and why the files run big: lossless photos simply take space. Convert, edit, and save to JPG or WebP at the very end, not the beginning.
FAQ
Is the PNG really lossless?
The PNG encode is, yes. Nothing gets recompressed on the way through. The camera's own HEVC compression remains the only lossy step the image has ever been through.
What happens to 10-bit HEIF?
The PNG comes out in standard 8-bit color, mapped the way your monitor already displays the file. If a grade genuinely needs the extra depth, work from the RAW; for every handoff and deliverable, the PNG is what the receiving tools expect.
How big will the PNGs be?
Big. A 33-megapixel still can become a 40-80 MB PNG, because photos do not shrink well losslessly. That is the normal cost of a zero-loss file.
Are my photos uploaded anywhere?
No. Your photos are never uploaded, stored, or seen by anyone. Here's how to verify that yourself.