Compress Image for Email — Free Online
Email providers reject heavy attachments. Compress an image for email until it fits Gmail's 25 MB or Outlook's 20 MB cap (the practical limit is closer to 10 MB once base64-encoded).
Quality settings for email
For an attachment that opens on any device, quality 60-70 hits the sweet spot. A 5 MB phone photo drops to 600-900 KB which sails through every email provider.
Multiple photos in one email?
Compress each one separately. Or zip the folder after compressing — zipping JPEGs does almost nothing because JPEG is already compressed, so the savings come from this step, not the zip.
Frequently asked questions
What is Gmail's attachment limit?
25 MB before encoding, around 18-19 MB in practice. Anything bigger is moved to Google Drive.
What is Outlook's attachment limit?
20 MB by default. Many corporate mail servers cap at 10 MB total.
Is it actually free?
Yes. No signup, no daily cap on normal personal use, no watermark on the output. Display ads keep the site free.
Does it work on a phone?
Yes. The upload box opens the camera roll on mobile browsers directly.
What happens to my photo?
Uploads are processed to return a download link and removed automatically within an hour. We do not view, share, or sell your files.