Batch compress pictures - many files, one run
When a portal, insurer or school asks for a whole set of photos under a size cap, compressing them one by one is slow. This tool takes several pictures at once, gives each one its own target size (start with one shared target, then adjust any single file), compresses them all in your browser with the same engine as Compress Picture, and hands back a single ZIP with every result and its before and after size.
How to do it
- Add several picture files (JPG, PNG or WebP).
- Set one shared target size, then adjust any file's own target if needed.
- Click Run and download one ZIP with all the compressed pictures.
Common questions
Are my pictures uploaded?
No. Batch compression runs entirely in your browser - your files never leave your device.
What if a picture cannot reach its target?
It is still included in the ZIP at the smallest sensible version, and the results list honestly marks it as smallest possible - target not reached.
How many pictures can I add?
There is no set number limit. Very large batches work best on a computer, because everything runs on your device.
Can I give one photo a different target from the rest?
Yes. Set the shared target first, then type a different target in that file's own box before you run - each picture is compressed to its own number.
What format do the results keep?
Pictures are re-encoded to reach their target size, and the ZIP uses clear file names so you can match results to originals. A picture may come back in a different format - for example a WebP may return as a JPG - when that is the version that fits the target.
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