How to convert many images at once
- Choose the output format in Convert to: JPG, PNG or WebP.
- Select Choose files, or drop a whole selection of images on the box. JPG, PNG, WebP, GIF and AVIF are accepted.
- Every file converts on its own, with its own progress bar and size summary.
- Select Download all (ZIP) to get everything in one file, or download single images from their rows.
Pick the right target format
JPG is best for photos and gives small files that open everywhere. Transparent areas turn white. PNG is lossless and keeps transparency, which suits screenshots, logos and editing, but files are large. WebP is usually the smallest and keeps transparency, and works in all current browsers. If you are unsure, WebP for websites and JPG for sharing is a good rule.
The quality slider applies to JPG and WebP. The default of 92 percent gives results that are close to the original. Lower it to 80 percent for noticeably smaller files.
How batches work
Files are processed in parallel using your device’s spare processor cores, so a batch of fifty photos finishes quickly on a modern computer. Names are kept, with the new extension, and duplicates in the ZIP get numbers. Metadata such as location and camera data is removed from the outputs. Animated GIFs convert only their first frame.
If a single file fails, the rest continue, and you can retry the failed one. Very large images may run out of memory on a phone. Try fewer at a time there.
Tips
- iPhone HEIC photos have their own tool with the correct decoder: HEIC to JPG.
- Shrink files afterwards with the image compressor.
- Need a specific size? Use the image resizer.
Your files are converted in the browser. Nothing is uploaded.