Why phone photos are so large
Phone cameras have gotten dramatically better over the past decade. A current iPhone or Android flagship captures 12 to 48 megapixels per shot. Each pixel stores color data, and even with built-in compression, a single photo easily reaches 5–8 MB.
Apple saves photos as HEIC by default, which is more efficient than JPG but still produces multi-megabyte files. Android varies by manufacturer — some save as JPG, others use proprietary formats — but file sizes are similarly large.
The camera optimizes for quality, not file size. It has no way of knowing you'll later need to attach that photo to a job application with a 100 KB upload limit.
Reduce photo size in your phone browser
Open Irreva in Safari (iPhone) or Chrome (Android). Go to the Image Compressor. Tap the upload area and select the photo from your camera roll or gallery.
Adjust the quality slider and watch the output file size update. For most sharing purposes, 75–80% quality produces a file that's a fraction of the original with no visible difference on a phone screen.
Download the compressed photo. On iPhone, it saves to your Downloads folder or Photos depending on your browser settings. On Android, it goes to your Downloads folder. The compressed file is separate from your original — your original photo stays untouched.
Everything runs locally in your browser. Your photos are not uploaded to any server, which matters when compressing personal or sensitive images on a phone you use for everything.
When you need a specific file size
Some upload forms specify an exact kilobyte limit — 50 KB, 100 KB, 200 KB. A quality slider alone won't reliably hit these targets. Use the Compress Image to KB tool instead.
Enter your target size, upload the photo, and the tool finds the right compression settings automatically. If the photo is still too large even at minimum quality, it may also reduce dimensions.
For passport photos and ID submissions, combine the Image Cropper to frame your head and shoulders, then the KB compressor to hit the exact limit. Crop first — fewer pixels means easier compression.
HEIC photos from iPhone
If your iPhone saves photos as HEIC, some tools and upload forms won't accept them. Convert to JPG first using the HEIC to JPG tool, then compress the JPG output.
Alternatively, change your iPhone settings to save as JPG by default: Settings > Camera > Formats > Most Compatible. This uses more storage but eliminates conversion steps when sharing.
The HEIC to JPG converter on Irreva runs in Safari on iPhone. Select your HEIC photos from the camera roll, choose output quality, and download JPG versions ready for any platform.
Tips for sharing compressed photos
Compress before emailing, not after. Email clients sometimes re-compress attachments, making your careful optimization pointless. Send the already-compressed file.
For messaging apps like WhatsApp or Telegram, the app compresses images on its own — often aggressively. If quality matters, send the photo as a document/file attachment instead of a regular image message.
Keep your originals. Compression is lossy. Store the full-resolution original in your camera roll and share compressed copies. If someone asks for a higher-quality version later, you still have it.