Image Converter

Sizes below are for one real 8-megapixel photo (a 5.4 MB JPG) converted at the default 85% quality.

In short: JPG for photos that must open anywhere, PNG for graphics and transparent backgrounds, and WebP or AVIF for faster websites.

• PNG to JPG: a much smaller file for photos. Transparent areas are filled with white.
• JPG to PNG: the file gets bigger, typically two and a half to four times for a photo, and looks no sharper: detail lost when the JPG was saved can’t be brought back. Convert only when an app needs PNG.
• WebP or AVIF to JPG: the fix when an image won’t open in an app or an upload form rejects it. Choose PNG instead if it has a transparent background.
• JPG or PNG to WebP or AVIF: the usual choice for websites. The test photo came out about a third smaller as WebP than as JPG, and about half the size as AVIF. A 31 KB PNG chart became 24 KB as WebP and 10 KB as AVIF.

Files keep their names with the new extension, so holiday.png becomes holiday.webp, or tick Add "_converted" suffix to tell the copies apart. To try another format, pick it and press Rerun with new settings.

JPEG, WebP and AVIF shrink files by discarding detail you’re unlikely to notice. The Quality slider (10 to 100%) sets how much is kept; PNG loses nothing, so it has no slider. On the same test photo:

• 85% (the default): 930 KB as JPEG, 610 KB as WebP, 425 KB as AVIF. Right for most photos.
• 70%: 630 KB, 355 KB and 250 KB. Good for websites; check smooth areas such as skies, where compression shows first.
• 100%: 5.6 MB as JPEG and 7.6 MB as WebP, bigger than the original for no visible gain. In Chrome, WebP at 100% is lossless.

The same number means different things in each format, so judge the result by eye; the results list shows each file’s old and new size. AVIF is also slower to create: about 4 seconds for a 12-megapixel photo on a recent laptop, and longer on a phone. Your format and quality are remembered for next time.

• Transparency, including soft edges, is kept in PNG, WebP and AVIF. JPEG can’t store it, so transparent areas become white.
• EXIF data (date taken, camera and GPS location) is removed from every converted file, so keep your originals if you want it. To see what a photo contains, use the EXIF viewer.
• Rotation: phone photos stored sideways with a rotation tag come out upright.
• Colours are saved as standard sRGB. Recent iPhones record a wider range (Display P3), so very saturated colours can look slightly less vivid on wide-colour screens.
• Animated GIFs become a still image of the first frame.

iPhones save photos as HEIC, which many websites and some Windows PCs can’t open. Add HEIC files here directly and they’re converted on your device: choose JPEG and IMG_1234.heic becomes IMG_1234.jpg. For a folder of iPhone photos there’s also a dedicated HEIC to JPG converter.

JPG, PNG, WebP, AVIF, GIF, BMP and SVG files work too, mixed in one batch if you like. SVGs are converted at the size set in the file. TIFF files don’t open in Chrome, Edge or Firefox; you’ll see an error instead.

The conversion runs in your browser, on your own phone or computer. No server is involved, so your images and the converted files are never sent anywhere.

To check, open your browser’s developer tools, watch the Network tab and convert an image. You’ll see no uploads, only anonymous page-view counts described in our privacy policy and, the first time you add images with AVIF chosen, its encoder (about 1 MB) downloading from this site. After your first visit the converter also works offline. The exception is AVIF until you’ve used it once online, because its encoder is only downloaded when first needed.