iLoveIMG
iloveimg.com
Batch resize, crop, compress and watermark a folder of images
Free tier
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bulkresizephotos.com
Resizes hundreds of photos at once without uploading any of them.
Choose a folder, set a target width, percentage or file size, and it resizes the lot using canvas in your own browser — nothing is sent anywhere, which is also why it stays fast with three hundred files. It crops and converts between JPEG, PNG and WebP too. There is no editing beyond that: no filters, no adjustments, no undo.
AltFTool does this too
If you would rather not leave the site, Image Resizer covers the same job here — free, no account, and it runs in your browser.
Open Image ResizerQuestions
Works the moment the page loads. No account, no email, no trial. Resize, crop and convert only — no retouching, and very large batches are bounded by your machine's memory.
No. Bulk Resize Photos does the work inside your browser, so the file never leaves your device — you can load the page, disconnect from the network, and it still works. That makes it a reasonable choice for material containing personal data.
Resize, crop and convert only — no retouching, and very large batches are bounded by your machine's memory.
Alternatives
Same category or same task, ordered by how closely they overlap.
iloveimg.com
Batch resize, crop, compress and watermark a folder of images
ezgif.com
Makes, crops, speeds up and optimises animated GIFs and short clips
squoosh.app
Compare image compression settings side by side before you export
tinypng.com
Shrinks PNG and JPEG files by half with no visible difference
photopea.com
Opens a PSD, keeps the layers, and runs entirely in a browser tab
screely.app
Wraps a raw screenshot in a browser frame and a decent background