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?
Sign PDF
Get any file to the size you need. Privately.
1 Open this page and add the file. Sign PDF starts in the browser you already have open.2 Run the tool. If this version cannot do the job honestly, it says so instead of inventing a result.3 Download the file that was built on this device. Closing the tab drops the bytes.
About this tool
Sign PDF is listed because people search for it. This version does not place a cryptographic signature, and it will not draw an image and call the file signed. A typed name and a certificate are different things. Uploading a contract so a website can “sign” it also hands that contract to the operator. Until this app can create a signature it can explain, the page stops. The guide separates a handwritten scan, a certificate, and a picture of handwriting.
Sign PDF 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: the honest limit is shown here, and the contract is not uploaded just to be signed.
- 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 “Sign PDF” upload my file?
Sign PDF reads the file in this tab. There is no upload step and no account.
What will “Sign PDF” actually change?
No certificate is created and no signature image is stamped. Either one, done quietly, would be a false result.
When is “Sign PDF” the wrong job?
A JPEG of handwriting is not a qualified electronic signature. Use a process that names the certificate if you need one.
How do I check the result of “Sign PDF”?
There is no signed download from this action. Do not treat an unchanged file as signed.
Can I run “Sign PDF” with Wi-Fi off?
Load this page, then turn Wi-Fi off and run Sign PDF again. A finished result is the proof that the file was not sent anywhere.
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Last updated 2026-09-27.