How can we help?

Resized images are saved to your browser's default Downloads folder. Check there first — on most devices it's named “Downloads.” Batch jobs are delivered as a single ZIP file (e.g. resizeit-batch.zip) which you'll need to extract.

Very large images (especially 48MP+ photos from iPhone/Android) can occasionally produce blank output due to browser memory limits when scaled in one pass. Try resizing in smaller batches (10–20 at a time), close other browser tabs, or use a desktop browser with more memory.

If you're upscaling beyond the original resolution, the result will always look softer — pixels have to be invented. For best quality, only resize down. If you're resizing down and still see blur, try the “Lanczos” quality option (when available) instead of the default.

All resizing happens locally in your browser using Canvas. If your device is low on memory or battery, processing may slow down. Try fewer images per batch, close other tabs, switch to a Chromium-based browser (Chrome, Edge, Brave), or use a desktop instead of mobile.

Saving as PNG or at 100% quality can produce a larger file than a smaller, JPG-compressed original — especially for photos. For the smallest output, choose WEBP or JPG at 80–85% quality. PNG is best reserved for graphics with transparency.

iPhoto Resize supports HEIC, but some older browsers do not have a built-in decoder. If your HEIC file fails, either update your browser, or switch your iPhone camera to “Most Compatible” (Settings → Camera → Formats) so new photos save as JPG.

Make sure “Lock aspect ratio” is enabled before entering dimensions, or use a single dimension (width OR height) and let the other auto-calculate. If you set both width and height manually with lock off, the image will be stretched to fit.

Browser-based resizing strips most EXIF metadata (location, camera settings) by design — this is good for privacy. Orientation is auto-applied so your photo is never sideways. If you need to preserve a color profile (e.g. Display P3), export as PNG.

Check your browser's site settings to make sure downloads are allowed for this site. Some browsers block automatic downloads after the first file, or block large files in Private/Incognito mode. Try a regular browser window if you're in private mode.

100 images per batch is a soft limit to keep your browser responsive. Above that, most browsers start to run out of memory mid-job. For larger sets, just run two batches back to back — there's no daily cap.

We never upload your images. All processing happens on your device. To verify: load the page, disconnect from the internet, then resize an image — it still works. Your photos never leave your browser.

Try disabling ad blockers (they can interfere with browser APIs like the File System Access API), clear your cache, or try a different browser/device. If the problem persists, please send us feedback.