Image Compression for Email: Beating the 25MB Attachment Limit
Most email services cap attachments around 25MB, and a handful of phone photos blows past that fast. Compression fixes it in seconds — no cloud links required.
Why a few photos exceed 25MB
Modern phone cameras produce 3–8MB per photo, and a high-resolution edited image can be far larger. Attach six or seven and you're over the limit. Email also encodes attachments in a way that inflates them by roughly a third in transit, so the practical ceiling is lower than it looks.
Shrink them in two steps
- Resize. Recipients viewing photos on a screen don't need full camera resolution. Dropping the longest edge to around 2000px keeps them crisp on any monitor while slashing size.
- Compress to 80%. Combined with the resize, this typically takes a 6MB photo down to under 1MB with no visible difference.
Run the whole set through the batch tool above, download the ZIP, and attach that — a folder of seven photos that was 35MB will comfortably fit under the limit.
Keep it private
Unlike "upload and share a link" services, compressing locally means your personal photos never sit on a third-party server. You attach real files to your own email, and nothing leaves your device during compression.