Compress Files for Email
Get under the 25 MB Gmail and 20 MB Outlook limits by zipping your attachments. Free, browser-based, nothing uploaded.
Email Attachment Limits in 2026
• Gmail: 25 MB per message • Outlook / Microsoft 365: 20 MB (33 MB for some plans) • Yahoo Mail: 25 MB • Apple iCloud Mail: 20 MB (Mail Drop bypasses this) • ProtonMail: 25 MB Note: email encoding (MIME / base64) inflates the size by about 33%, so a "25 MB" attachment limit really means a ~18 MB raw file before encoding. ZIP-then-attach gives you headroom.
How to Zip Attachments in Your Browser
1. Open tarpanda and switch to "Create" mode 2. Drop the files (or a whole folder) you want to send 3. Pick "Maximum" compression for the smallest possible ZIP 4. Click "Create ZIP" and save the file 5. Attach the ZIP to your email No upload, no third-party server in between. The ZIP is built locally and downloaded straight to your device.
When Compression Won't Help
ZIP can't shrink files that are already compressed. If your attachment is mostly: • JPEG / PNG / WebP photos • MP3 / AAC / FLAC audio • MP4 / MKV / MOV video • Existing ZIP / RAR / 7Z files … the ZIP will be roughly the same size as the originals. In that case, either resize the photos/video before zipping, or use a cloud-storage link (Google Drive, OneDrive, WeTransfer) instead of attaching directly.
Tips for Smaller Email Attachments
• Resize photos to 1920 px on the long edge before zipping (60–75% smaller, no visible quality loss on screen) • Re-export PDFs at lower DPI — scanned PDFs often shrink by 70% with no readability loss • Bundle text-heavy files (logs, source code, spreadsheets) into one ZIP — huge wins, often 80%+ • Strip metadata from photos before sending if size matters • Use "Maximum" compression in tarpanda — a few extra seconds for a noticeably smaller file
Try it now — free in your browser
No download. No signup. Your files never leave your device.
Create ZIP nowFrequently Asked Questions
JPEG and PNG are already compressed. ZIP can't shrink them further — it just bundles them. To send photo-heavy emails, resize the images first (1920 px is a good ceiling) and then zip.
Yes. Every modern OS — Windows, Mac, iOS, Android, Linux, ChromeOS — opens ZIP files natively. No additional software needed on the recipient's end.
Possible, but messy for the recipient. If your ZIP exceeds the email limit even at maximum compression, share via cloud storage (Drive, OneDrive, WeTransfer) instead.