How to Compress Images for Email (Free, Under the Size Limit)
July 16, 2026
Most email providers cap attachments at around 25 MB (Gmail and Outlook), and some corporate inboxes reject anything over 10 MB. Modern phone photos are 5–12 MB each, so a handful of them blows past the limit fast. Here's how to shrink them in seconds — for free, without uploading anything.
Compress in your browser
- Open the image compressor.
- Drop in one photo or a whole batch.
- Drag the quality slider until the file size fits.
- Download them — individually or all together as a zip.
You'll usually cut 40–80% of the file size with no visible difference in quality. The tool shows you the before/after size live, so you can dial it in exactly.
Why not just email the originals?
- Attachment limits. Big files bounce or fail to send.
- Slow uploads. Large attachments take forever on mobile data.
- Recipient's inbox. You fill up their storage and clog their download.
Compressing first is faster for you and kinder to whoever receives it.
Private by default
Unlike most "compress image online" sites, cutbg does the work on your device — the photos are never uploaded to a server. That matters when you're emailing personal photos, documents, or screenshots with sensitive info.
Extra tips
- Resize, don't just compress. If the photo is 4000px wide but only needs to be viewed on screen, resize it to ~1600px first — that alone shrinks it dramatically.
- Convert to WebP. For the smallest possible files, convert to WebP; it's supported by every modern email client and browser.
- HEIC from an iPhone? Convert it to JPG first so the recipient can actually open it.