Compress Image for Email
Email providers cap total message size at 20–25MB, but the real problem starts earlier: multi-megabyte photos make messages crawl, get clipped in Gmail, or bounce from corporate servers with tighter limits. A 300–500KB photo looks identical on screen and sends instantly. This tool defaults to 500KB per image — adjust the target if your recipient's system needs smaller.
100% private — this tool runs in your browser. Your image is never uploaded to any server.
Compress Image for Email — specification
| Default target | 500 KB — sharp on any screen |
|---|---|
| Gmail/Outlook limit | 25 MB / 20 MB total message |
| Corporate servers | Often 10 MB — compress more when unsure |
| Batch option | Use our bulk compressor for many photos |
How to use this tool
- Tap the drop area and choose your image (or drag it in).
- The tool processes the file instantly on your device — quality is tuned automatically to meet the target.
- Check the spec strip: a green ✓ stamp means the file meets the requirement.
- Tap Download and upload the file to your form.
Frequently asked questions
What size should an emailed photo be?
300–500KB is the sweet spot: indistinguishable from the original on screens, fast to send and open, and safely inside every provider's limits even with several attached. Only send full-resolution originals when the recipient will print or edit them.
Why does Gmail clip or reject my message?
Attachments count toward a 25MB total (and encoding overhead inflates them ~33%). Three phone photos can breach it alone. Compressing each to 500KB puts a dozen photos in one message without issues.
How do I compress many photos for one email?
Use the bulk image compressor — select all the photos, set one target, and download each compressed copy. Then attach them all.