Compress Images for Email Attachments — Fast and Free
Compress images for email in seconds — no upload, no software, no sign-up. Compression runs entirely in your browser, so your photos never leave your device. Most smartphone photos are 4–8 MB by default. Medium compression typically reduces them to under 500 KB — well within Gmail's 25 MB attachment limit and ideal for slower connections.
No upload — compression runs entirely in your browser. Files never leave your device.
Compress your image for email in seconds — free, private, no account needed.
Compress Image for EmailHow to compress an image for email
- Click "Compress Image" and select your JPG, PNG, or WebP photo (up to 50 MB)
- Choose Medium compression for the best quality-to-size ratio for email attachments
- Download the compressed image and attach it to your email
Email attachment size limits by provider
- Gmail — 25 MB per email; large attachments may convert to Google Drive links
- Outlook — 20 MB per email; corporate Outlook may be as low as 10 MB
- Yahoo Mail — 25 MB per email
- Apple Mail (iCloud) — 20 MB; larger files use Mail Drop
Even within the technical limits, smaller attachments load faster for the recipient — especially on mobile. Keeping images under 500 KB ensures instant loading in email clients on any connection speed.
Which compression level for email images?
- Medium — Best for most email use cases. Keeps photos sharp and vibrant while reducing a 5 MB photo to under 500 KB.
- High — Best when you need the smallest possible file. Some quality reduction but the image remains clear.
- Low — Near-original quality with modest reduction. Use when the recipient will print the photo.
Ready to compress your image attachment?
Compress Image Free