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PDFImageTools

Converters

Format conversion is the most common reason people reach for a file tool: a phone shoots HEIC, a form wants JPG, a website wants WebP. Every converter here works offline once the page has loaded.

9 tools · all free · no sign-up

What conversion can and cannot recover

Conversion changes how a picture is stored, not what was captured. That distinction decides whether a conversion is free or lossy. Going from HEIC or PNG to JPG discards information permanently, because JPG throws away detail the eye is least likely to notice. Going the other way — JPG to PNG — does not bring anything back; it just stops the file losing anything further, usually at several times the size.

The practical rule is to convert once, as late as possible, from the best original you have. Repeatedly saving a JPG as a JPG degrades it a little each time, and converting to PNG in the middle does not stop that, because the damage is already in the pixels.

The most common conversion here is HEIC to JPG, and it exists because iPhones shoot HEIC by default while a great many upload forms have never heard of it. That conversion is decoded and re-encoded entirely on your device, which matters more than usual — the photos people need to convert are typically the ones off their own camera roll.