Free · Open source · No upload
Get any file to the exact size you need.
Compress, convert and sign PDFs and photos in your browser. Your files are never uploaded.
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How it works
Choose a file
Select or drop a PDF or photo into the workspace.
Set your target
Pick an exact size limit or strength goal.
Download
Get your file instantly without leaving your browser.
Questions
Are my files sent to any server?
Is Weesize really completely free?
How does exact-size compression work?
Does it work offline?
Gmail attachment size limit
Get any file to the size you need. Privately.
1 Compress the PDF here on your device.2 Check that the downloaded file is under 25 MB.3 Attach it directly in Gmail without converting to a Drive link.
About this tool
Gmail enforces a 25 MB total limit for email attachments. If your PDF packet exceeds 25 MB, Gmail uploads it to Google Drive as a shared link. To attach your document directly without cloud links, compress the PDF on your device first. Reducing image resolution and compressing scanned pages brings oversized files under the 25 MB ceiling while keeping text readable.
Gmail attachment size limit stays on this device. The download is the copy you keep, and Weesize does not store a second one. Close the tab when you are finished and the bytes are gone.
- No upload: on-device compression fits Gmail limits before you attach.
- Speed: the file does not travel to a server and back, so the wait is only the work itself.
- Quality: the original is kept when the new file would be worse or is not actually smaller.
FAQ
Does “Gmail attachment size limit” upload my file?
Gmail attachment size limit reads the file in this tab. There is no upload step and no account.
What will “Gmail attachment size limit” actually change?
The 25 MB limit is enforced by Gmail. Compressing on your device stays private.
When is “Gmail attachment size limit” the wrong job?
Skip cloud upload prompts by shrinking the file locally.
How do I check the result of “Gmail attachment size limit”?
Check that text remains clear after compression before emailing.
Can I run “Gmail attachment size limit” with Wi-Fi off?
Load this page, then turn Wi-Fi off and run Gmail attachment size limit again. A finished result is the proof that the file was not sent anywhere.
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Last updated 2026-09-27.