A free bulk image converter for WebP, AVIF, PNG and JPG
Most converter sites handle one direction at a time and make you pick a new page for every pair. This one takes up to 100 images in a single go, in any mix of PNG, JPG, WebP, AVIF, GIF and BMP, and turns them all into PNG, JPG or WebP. That covers WebP to PNG, WebP to JPG, AVIF to JPG, AVIF to PNG, PNG to JPG, JPG to PNG and more, with one tool.
If you only need smaller files for a website, the dedicated PNG and JPG to WebP converter has more WebP controls. For everything else, this page is the quickest way to change format.
WebP to PNG that keeps transparency
Choose PNG and any transparent areas stay transparent, including soft shadows and smooth edges. The previews sit on a checkerboard so you can see it. This is the right choice for logos, icons, stickers and product cut-outs saved as WebP or AVIF that you want to open in an editor or send to someone with older software.
Keep in mind that PNG is lossless. A photo that was a small WebP can become a much bigger PNG, and the tool tells you when that happens. Converting cannot bring back detail that was already lost when the first file was made.
PNG to JPG with a white background (or any colour)
JPG cannot store transparency. Many converters quietly fill transparent areas with black, which ruins logos and screenshots. When you pick JPG here, a colour box appears and transparent areas are filled with it before the file is made. White is the default, and you can choose any other colour to match your page or a print.
For photos, the quality slider sets the balance between size and sharpness. Around 90 suits most pictures; use 95 or higher for text, screenshots and thin lines.
AVIF to JPG and AVIF to PNG
AVIF files are small, but many apps, printers and upload forms still refuse them. Drop them in and choose JPG or PNG to get files that open everywhere. Your browser does the reading, so AVIF input works in current versions of Chrome, Edge, Firefox and Safari. If a browser is too old to open AVIF, the tool shows a clear message instead of failing silently.
Preview every image before you download
Each converted image appears with its old size, new size and the change in percent. Click Compare to open a before-and-after view and drag the slider across the picture, so you can check the result with your own eyes.
Downloading is one click: the Download button on a card saves that file, and Download all saves the whole batch as a single ZIP with the original file names and the new extension. Change the format at any time and everything is converted again.
Convert to WebP when you want small web images
Pick WebP and you get a choice between Lossy for the smallest files and Lossless for pixel-perfect copies. WebP is made with libwebp, the encoder Google builds for the format, running on your device. It works in Safari too, where the browser's own WebP export is missing.
Resize while you convert
Phone and camera photos are often far bigger than a website or an email needs. Pick a longest side such as 1920 or 1280 pixels and every image is scaled down with high-quality smoothing as it is converted. Images are never enlarged, and photos are turned the right way up using their orientation data.
What about animated GIF or WebP files?
This converter makes still images. If you drop an animated GIF or WebP, you get the first frame. Animation is not kept.
More free image and file converters
Working with vector graphics? Our SVG to PNG converter turns SVG code, files or links into sharp PNGs, and the PNG and JPG to SVG converter traces logos and icons into vectors. To go between images and documents, turn photos into a PDF or convert a PDF to PNG or JPG. Web developers may also like the TTF to WOFF2 converter.
Private by design
Your images never leave your device. They are opened, converted and zipped inside your browser tab, like all of our free online tools. You can watch the Network tab in your browser's developer tools while it works to see that nothing is sent.