Image Compressor

Compress image to Under 25 MB for Email

Gmail, Yahoo Mail and Yahoo Mail Business all cap attachments at 25 MB.

Your images stay on your device. Nothing is uploaded.

Multiple email providers use the same 25 MB attachment cap: Gmail, Yahoo Mail, Zoho, iCloud (with fallback to Mail Drop). Landing your file safely under 25 MB avoids the various platform-specific fallbacks (Drive link, Mail Drop, etc.).

This preset produces a 3200 px JPEG at quality 90 — high-quality, direct-attachable across every major provider.

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Frequently asked questions

What's the attachment size limit for Email (25 MB cap)?
Email (25 MB cap) caps attachments at the size the preset on this page targets. Anything above the cap either gets rejected or gets converted to a link-share fallback (like Gmail's Drive attachment).
Why compress before attaching to Email (25 MB cap)?
Recipients may be on slow mobile connections, and their servers may enforce lower caps than yours. Compressing before send maximises deliverability and speeds up download for recipients on mobile.
Does Email (25 MB cap) compress images automatically?
Email (25 MB cap) does not re-compress attachments the same way social media platforms do — what you send is what the recipient receives. So the size at send equals the size at receive.
What format is best for Email (25 MB cap)?
JPEG is the safest universal choice for email attachments — every email client can preview it inline. WebP support varies (Outlook desktop can't preview WebP), so JPEG remains the default.
Is my image uploaded to a server?
No. Compression runs entirely in your browser. Only when you attach the compressed result to your email does it leave your device.

Compress an image for Email (25 MB cap).

Land under the target size in seconds. Nothing uploaded — runs entirely in your browser.

Start compressing