Your phone is where your photos live — and where they're biggest. A modern Android or iPhone camera produces 3–8 MB per shot, which is why your gallery eats storage, uploads crawl, and email attachments bounce. The fix doesn't need an app: any modern mobile browser can compress photos locally, right on the device. Here's the exact process for both platforms.
Android: three taps in Chrome
- Open the compressor in Chrome (or any browser) and tap Select Images.
- Android opens its file picker — choose up to 20 photos from your gallery. Recent photos appear first.
- Set quality (70–75 is right for sharing), optionally cap the width at 1280 px, and tap Download All. The compressed copies land in your Downloads folder.
Android photos are already JPEG (or increasingly WebP), so there are no format surprises. A 4 MB photo typically comes back around 200–400 KB.
iPhone: one setting to know about first
Since iOS 11, iPhones save photos as HEIC — a format with excellent compression that, unfortunately, web browsers cannot read. You have two clean options:
- Option A (one-time fix): Settings → Camera → Formats → Most Compatible. New photos save as JPEG and work everywhere, including browser tools.
- Option B (per photo): when you pick photos through Safari's file picker, choose the photo library — iOS automatically converts HEIC to JPEG as it hands the file to the website. This works transparently in most cases.
If a tool tells you a HEIC file was skipped, use the Share sheet → Copy Photo → paste into Files as JPEG, or just switch the camera setting above.
Why in-browser beats a compression app
- Privacy. Compression apps routinely demand full gallery access and network permissions. A browser tool that processes locally sees only the photos you explicitly pick — and a good one never transmits them at all.
- No storage cost. Apps take space on exactly the device that's already full.
- Nothing to keep updated. The browser you already have is the runtime.
Recommended settings by use case
- WhatsApp / Telegram sharing: the apps compress anyway — but sending a pre-compressed 1280 px photo uses a fraction of your data allowance upfront.
- Email: quality 70, max width 1280 px. A dozen photos fit comfortably under the 25 MB limit.
- Selling online (OLX, Marketplace, eBay): quality 75, max width 1920 px — listings load fast and still zoom well.
- Freeing up phone storage: compress your camera roll in batches of 20, save to Files/Downloads, verify, then delete the originals. Expect to recover 70–90% of the space.
A note on data usage
Because the compression happens on your phone's own processor, the tool works fully offline once the page has loaded — useful on flights, or when you're compressing photos precisely because your data plan is nearly exhausted. Load the page on Wi-Fi, and the compressing itself costs zero data.
Compress your images now
Ready to put this into practice? Use the free WebPcompress compressor — it runs entirely in your browser, handles 20 images at a time, and your photos never leave your device.