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?
PDF to PDF/A
Get any file to the size you need. Privately.
1 Open this page and add the file. PDF to PDF/A 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
PDF to PDF/A is an archival conversion with rules about fonts, color, and metadata. This version will not stamp a PDF/A claim on a file it did not validate. A false archival label is worse than no label, because a records office might accept it. If a portal demands PDF/A, use a checker you trust on a machine you control, not a badge from a site that received the record.
PDF to PDF/A 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 file is not uploaded to receive an archival badge this app cannot verify.
- 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 “PDF to PDF/A” upload my file?
PDF to PDF/A reads the file in this tab. There is no upload step and no account.
What will “PDF to PDF/A” actually change?
No conformance claim is written. Fonts are not embedded by a fake pass.
When is “PDF to PDF/A” the wrong job?
Do not rename a normal PDF to imply it is PDF/A. The label is a claim about the file’s insides.
How do I check the result of “PDF to PDF/A”?
A real PDF/A file should pass a validator. This page will not hand you a renamed ordinary PDF.
Can I run “PDF to PDF/A” with Wi-Fi off?
Load this page, then turn Wi-Fi off and run PDF to PDF/A again. A finished result is the proof that the file was not sent anywhere.
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Last updated 2026-09-27.