Compress Photos on Your Phone
Phone cameras now save 12 to 48 megapixel photos of several megabytes each. This compressor runs in your phone's browser: choose photos from your library or take one with the camera, and it resizes them to 2048 px on the long side and saves JPGs at quality 76, usually a small fraction of the original size. iPhone HEIC photos are converted to JPG on the way.
- Processed locally
- No upload, no wait
- No sign-up
- No watermark
Drop images here
or choose files · paste with Ctrl/⌘ V
JPG, PNG, WebP, HEIC, AVIF, GIF, TIFF, SVG, RAW, PSD, JXL, BMP, ICO and more
How to use Mobile Compressor
- 1
Drop your images, choose files, or paste from the clipboard.
- 2
Adjust the options. The preview updates as you change them.
- 3
Click Compress. Files are processed on your device.
- 4
Download each result or everything as a ZIP.
Why use Aback Images for mobile compressor
Best-in-class encoders
MozJPEG for JPG, OxiPNG and palette quantisation for PNG, libwebp and libavif for WebP and AVIF, all compiled to WebAssembly.
Live before/after
See the result and its file size on your actual image before processing the batch.
Processed on your device
Your images are decoded, edited and encoded inside this browser tab by Web Workers. Nothing is uploaded to a server.
Never bigger than the original
If compression cannot beat your file, the original is returned unchanged with a note.
Related tools
Convert HEIC to JPG in your browser, with transparency filled in a colour you pick. Batch, private, no uploads.
Shrink photos to email-friendly JPGs, at most 1600 px and quality 72, so several fit in one message.
Hit a file-size limit for forms and uploads. Searches quality, then dimensions, and can pad up to a minimum.
Strip EXIF, GPS, XMP, IPTC and comments losslessly. Pixels are never re-encoded for JPG, PNG and WebP.
Shrink JPG, PNG, WebP, AVIF and GIF files with MozJPEG, OxiPNG and modern codecs, with a live before/after preview.
Make JPEG photos smaller with MozJPEG, the encoder that beats standard JPEG by 10-15% at the same quality.
Cut PNG size by up to 80% with smart palette reduction and OxiPNG lossless optimisation, keeping transparency.
Re-encode WebP images smaller with libwebp's best settings, including animated WebP.
Frequently asked questions
Does it work on iPhone and Android?
Yes, in Safari, Chrome and other current mobile browsers. Choosing files opens your photo library, and the results download to your phone. Big batches take longer on a phone than on a computer, but nothing leaves the device.
Why 2048 pixels?
It is sharp on phone and laptop screens and plenty for sharing, yet a fraction of a 48 MP original. Choose another size under More options, or Keep original size to only recompress.
Are my images uploaded anywhere?
No. Processing happens inside your browser with WebAssembly and Web Workers. The site only downloads the app code and codecs; your files never leave your device. You can confirm this with the live upload counter on the tool, or in your browser's network panel.
Can I process many files at once?
Yes. Drop a whole selection or folder. Files are processed in parallel on several worker threads, each result can be downloaded on its own, and everything can be saved as one ZIP.
Is it free? Is there a file limit or watermark?
It is free with no account, no watermark and no daily limit. The only limit is your device's memory: very large images (over roughly 100 megapixels) may be refused to keep the tab from crashing.