Compress Images for Email (Free, No Upload)
Gmail and Outlook accept 25MB but most corporate servers top out around 2MB — and a 5MB phone photo gets 'rejected' or bounces. Compressing before sending is faster for everyone. This tool does it in your browser.
Try the free tool now
100% in your browser — no upload, no account, no watermark.
Open Compress Images for EmailThe attachment numbers that matter
Stay under 2MB for corporate SMTP tolerance; 100-500KB is the comfortable sweet spot for attachments and newsletter embeds. A compressed JPG at 70-80% looks identical for on-screen reading.
Compress for email in one step
- Open the Compress Image tool.
- Drop your photo or document scan.
- Target ~400KB with the quality slider (or 70% and resize to 1200px).
- Download and attach.
For embedded newsletters, stick to 800px-wide images at 60-70% — most clients strip `width` overrides otherwise.
Documents and contracts
Scanned contracts compress perfectly at 100-300KB and print cleanly. Privacy is built in: nothing leaves your device, which matters for contracts and passports.
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Frequently Asked Questions
What is the best size for email attachments?
Under 2MB is the safe cap; 400KB reads instantly and almost never bounces.
Will compression make my PDF-sourced images unreadable?
No — 70% quality keeps text razor sharp. Only deep gradients need higher quality.
Can I compress multiple photos?
Compress each photo in turn, or prep them at 1200px width first for a consistent, slim send.