Which image format should I use?
| Format | Best for | Transparency | Notes |
|---|---|---|---|
| JPG | Photos | No | Opens everywhere. Small files, but text and sharp edges get fuzzy at low quality. |
| PNG | Logos, screenshots, text, emotes | Yes | Lossless, so every pixel is kept. Photos come out large. |
| WebP | Websites, mixed content | Yes | About 25% to 35% smaller than JPG at similar quality; supported by all current browsers. |
| AVIF | The smallest web images | Yes | Often half the size of JPG. Some older apps can't open it, and not every browser can create it. |
| HEIC | iPhone camera | Yes | Small and high quality, but Windows, many websites and most social apps want JPG instead. |
Example: an iPhone HEIC photo converts to a JPG that opens on any computer and uploads anywhere. A 1.2 MB PNG screenshot saved as WebP at quality 90 is often around 200 to 400 KB with no visible difference.
How the conversion works
Your browser decodes each image, draws it at full resolution and saves it in the new format with its built-in encoders. iPhone HEIC photos, which most browsers outside Safari can't open, are decoded with a WebAssembly build of libheif that loads only when you add one. The photo's orientation is applied, so pictures come out the right way up. Converting doesn't copy EXIF data such as GPS location, which is a privacy bonus when you share photos.
Converting a JPG to PNG won't restore detail that JPG compression already removed; it only stops further loss. Going from PNG to JPG is the usual way to make big screenshots small.
Frequently asked questions
How do I convert HEIC to JPG?
Drop the HEIC photos here and pick JPG. They're converted on your device and you can download them one by one or as a ZIP.
Does converting reduce quality?
Saving as JPG, WebP or AVIF is lossy, but at quality 90 the difference is invisible for most photos. PNG is lossless.
Is there a file size or count limit?
No. Because nothing is uploaded, the only limit is your device's memory.
Is location data removed?
Yes. Converted images don't carry over EXIF metadata such as GPS coordinates or camera details.
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