Resize many images at once

How Batch Image Resizer works

The image is decoded into a canvas element, redrawn, and handed back as a new file. A canvas lives in the tab; closing it discards the pixels, which is why nothing needs deleting afterwards. Nothing is re-encoded on a server, so no copy of the original survives anywhere you cannot see.

That is the whole architecture: static files, one script, no upload endpoint to leak or log. Close the tab and the work is gone.

Good to know

• Works offline once loaded, including on flights and in locked-down networks.
• No file size limit beyond your device's own memory.
• Free to use, with no account and no usage counter.
• Results are produced locally, so they are not logged or shared with anyone.

Questions