Image formats solve different problems, which is why files so often arrive in one you can't use: an iPhone photo that Windows won't open, a WebP that an upload form rejects, a scanned TIFF too large to email. These converters handle the common cases in both directions, and all of them run inside your browser — the file never leaves your device.
Choosing the format you convert to
| Format | Compression | Transparency | Best for |
|---|---|---|---|
| JPG | Lossy | No | Photos that must open everywhere |
| PNG | Lossless | Yes | Screenshots, logos, graphics with sharp edges |
| WebP | Lossy or lossless | Yes | Websites — usually smaller than JPG or PNG |
| AVIF | Lossy or lossless | Yes | The smallest files for websites, slower to create |
A simple rule covers most cases: JPG when someone else's system has to accept the file, PNG when every pixel or a transparent background matters, and WebP or AVIF when it is going on a website you control.
Formats you usually convert from
HEIC is the default camera format on iPhones. It is efficient, but many Windows apps, websites and upload forms still can't open it, so converting to JPG is the quickest fix. TIFF comes from scanners, print workflows and archives: large, lossless and often multi-page — the TIFF converters here export every page, not just the first. GIF is mostly used for short animations; converting one to JPG or PNG keeps its first frame as a still image. SVG is a vector format, so turning it into PNG means choosing the exact pixel size you need.
Two details converters often get wrong
Converting a transparent image to JPG forces every transparent pixel to become a solid colour, because JPG has no alpha channel. Here you choose that colour instead of silently getting black. And browsers can display AVIF but cannot create it on their own, so the AVIF tools load an open-source encoder the first time you use them rather than handing back a PNG with the wrong name.
Private by design
Decoding and re-encoding both happen on your own device. Nothing is uploaded, there is no account, and there is no limit on file size or on how many files you convert.