Image Format Converter (PNG ↔ JPG ↔ WebP)

Pick by content. JPG handles photos well - landscapes, portraits, anything with smooth gradients and natural detail - and the lossy compression keeps file sizes small. PNG is the right choice when you have transparency (logos on a transparent background), sharp edges (icons, UI screenshots, vector exports), text overlays, or anything that must stay pixel-perfect. JPG ruins clean edges with halos and color shifts; PNG bloats photos to 5x the size. Practical rule: if it has transparency or hard edges, PNG. If it's a real-world photograph, JPG. Modern sites can use WebP for both.

For most sites, yes - WebP delivers smaller files at comparable visual quality. Typical reductions are often 25-35% on typical hero images and product photos. It also supports transparency and animation, which JPG doesn't. Browser support is solid: Chrome, Firefox, Safari, Edge all decode it, and Safari joined the party back in 2020. For users on truly ancient browsers, serve a JPG fallback through the picture element. The main downsides are tooling - some image editors and email clients still don't handle WebP well, so it's a web-first format, not a universal one.

JPG has no transparency channel - none, full stop. The format simply doesn't store an alpha value per pixel. So when you convert a PNG with transparent areas to JPG, the encoder has to fill those pixels with something, and that something is a solid background color. Most converters default to white, which is why a PNG logo with a transparent background suddenly has a white box around it once it becomes JPG. Pick the background color deliberately to match your destination - black for dark UIs, white for documents - or skip the conversion and keep the PNG.

Because PNG stores pixels losslessly while JPG stored them lossy. When you convert JPG to PNG, the encoder writes every single pixel as-is, including all the JPEG compression artifacts the eye couldn't really see anyway. PNG can't undo what JPG already discarded - the original detail is gone for good. So you end up with a bigger file containing the same visible quality, just packaged in a heavier container. There's no quality recovery happening, only a format change. If you want lossless going forward, start lossless from the original source.

Yes, the converter handles it. Drop the WebP in, pick PNG as the output, and it decodes the WebP in the browser, draws it on a canvas and re-encodes as PNG for download. Useful when you're handing assets off to a tool that doesn't speak WebP - older Photoshop versions, certain CMS plugins, some print workflows. Just expect the PNG to be substantially larger, often 2-4x the WebP size, because PNG is lossless and WebP probably wasn't. If transparency was in the WebP, it carries over fine. If you only need a JPG, that's lighter still.

It depends on the browser. Safari decodes HEIC natively because Apple ships the codec at the OS level - so any Safari-based tool reads HEIC files cleanly. Chrome and Firefox on Windows or Linux usually can't, since they don't bundle the HEIC decoder for licensing reasons. The workaround is either using Safari, or asking iPhone users to switch the Camera setting to Most Compatible under Settings > Camera > Formats, which makes the phone shoot JPEG instead. For one-off conversions, AirDrop to a Mac and re-export, or use a desktop tool with libheif support.

No. PNG is lossless, but lossless only means it preserves whatever pixels you feed it - it can't reconstruct data that's already been discarded. The JPG was compressed once, the artifacts are baked into the pixels, and converting to PNG just wraps those same imperfect pixels in a heavier container. You'll get a bigger file with identical visible quality. The only real reasons to make this conversion are tooling needs (something downstream demands PNG) or if you're going to edit and want to avoid further JPG generational loss. Quality recovery is not happening here.

Both are modern image formats that beat JPG on compression. AVIF, based on the AV1 video codec, typically squeezes about 20-30% smaller than WebP at the same visual quality - it's the more aggressive option. The trade-off is encoding speed (AVIF is slower to generate) and tooling support, which is still catching up. WebP is older, simpler, faster to encode and decode, and supported pretty much everywhere now. For high-traffic sites where every kilobyte matters, AVIF earns the extra complexity. For everyday workflows, WebP hits the sweet spot of size, speed and compatibility.