Compress Images for Email Attachments
Shrink images for email so they stay under attachment limits. Works with Gmail, Outlook, Yahoo, and more. Free browser-based tool — no uploads to any server.
Email providers cap attachment sizes — Gmail allows 25MB total, Outlook permits 20MB, and many corporate mail servers set the bar even lower at 10MB. When you need to send a handful of high-res photos, those limits can feel painfully small. Manually resizing each image in Photoshop or Preview wastes time you don't have.
Our email-optimized image compressor solves this in one step. Upload your images, and the tool automatically applies compression tuned for email: files small enough to sail through any mail server, images sharp enough that recipients can still see every detail. Batch processing means you can compress an entire vacation album in one go instead of handling each photo individually.
Because everything runs in your browser, your personal photos never touch a third-party server. That's especially important when emailing sensitive documents, family photos, or business files. Drag, drop, compress, download, attach — the entire workflow takes under 30 seconds for most users.
Ready to compress images for email attachments?
Free, private, and works entirely in your browser. No signup required.
Open Compress Image ToolFrequently Asked Questions
Aim for 200–500KB per image for the best balance of quality and deliverability. This ensures your message stays well under the 20–25MB attachment limit even when sending multiple photos.
Yes. For HTML email newsletters, compressed images under 200KB load faster for recipients and reduce the chance of being flagged as spam. Use our compressor to optimize each image before inserting it into your template.
Compression reduces file size without changing pixel dimensions. Your images will display at the same resolution — they just take up less storage space and transfer faster over the network.