Image Converter
Convert between PNG, JPG and WebP, right in your browser.
Free · No watermark · Private — your image never leaves your browser
PNG, JPG and WebP in any combination, with quality control on the lossy outputs and transparency handled correctly on the ones that support it.
Converting to JPG flattens transparency onto white rather than producing a black box; converting to WebP or PNG preserves the alpha channel intact.
Because the encoding happens on your device, conversion starts the moment you drop the file — no waiting for an upload, no server-side processing queue.
How it works
Three formats cover almost everything on the web, and each is good at something the others aren't. PNG is lossless with transparency, which makes it right for graphics and wrong for photographs. JPG is lossy and universally accepted, which makes it right for photos and wrong for text. WebP does both jobs better than either but isn't accepted quite everywhere yet. Drop an image in, pick the output, and download. The conversion runs on your device, so nothing is uploaded and there's no queue.
- 1Drop your image in, click to browse, or paste it from the clipboard.
- 2Choose the output format: PNG, JPG or WebP.
- 3Adjust quality if you're converting to a lossy format.
- 4Download the converted file.
PNG vs JPG vs WebP
| Format | Strength | Weakness |
|---|---|---|
| PNG | Lossless, transparency, perfect for graphics and text | Large files for photographs |
| JPG | Small photo files, accepted absolutely everywhere | No transparency, artefacts around text |
| WebP | Smallest at equal quality, transparency, lossy or lossless | Rejected by some older tools and forms |
Choosing the right target format
Ask two questions. Does it need transparency? If yes, PNG or WebP — JPG has no alpha channel and never will. Is it a photograph or a graphic? Photographs compress enormously well as JPG or WebP and badly as PNG; graphics, screenshots and anything with text are the reverse, because lossy compression puts visible halos around hard edges. WebP is the modern default for anything web-facing: smaller than JPG on photos, smaller than PNG on graphics, and it supports transparency in both modes.
Conversion can't recover what's already lost
Converting a JPEG to PNG produces a lossless copy of a lossy image — the compression artefacts are baked into the pixels and are now stored perfectly. The file usually gets bigger while looking exactly the same. That's still a reasonable thing to do before editing, since it stops further generation loss, but it isn't a quality upgrade. Nothing recovers detail a lossy save discarded.
Compatibility, briefly
JPG and PNG are accepted essentially everywhere, including decades-old software. WebP is supported by every current browser and by modern design tools, but still gets rejected by some upload forms, older applications and certain print workflows. Use WebP for anything you control, and convert to JPG or PNG when handing a file to something you don't.
Frequently asked questions
Which format should I choose?
WebP for anything on the web — smallest at matching quality, with transparency. PNG when you need lossless output or an alpha channel and the destination won't take WebP. JPG when compatibility matters most and the image is photographic.
Does converting lose quality?
Converting to PNG is lossless. Converting to JPG or WebP re-encodes lossily, though above 80 percent quality the difference is invisible on photographs. Converting between lossy formats does compound artefacts slightly, so start from the best original you have.
What happens to transparency?
PNG and WebP keep it. JPG can't store it at all, so transparent areas are flattened onto white — deliberately, because leaving it undefined produces black backgrounds in some decoders.
Can I convert HEIC, AVIF or SVG?
Not currently. The tool handles PNG, JPG and WebP, which covers the overwhelming majority of conversions. SVG is a fundamentally different thing — vector instructions rather than a pixel grid — so it needs rendering, not converting.
Does it work on my phone?
Yes. It runs in the mobile browser the same way it runs on desktop, and you can pick images straight from your camera roll.
Is my image uploaded?
No. Every conversion runs in your browser on your own device. Nothing is transmitted or stored.