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.
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Are my files sent to any server?
Is Weesize really completely free?
How does exact-size compression work?
Does it work offline?
Compress PDF to 5 MB
Get any file to the size you need. Privately.
1 Add the PDF. This page already sets the goal at 5 MB.2 Compress on this device. Text is not rewritten. Images shrink only while the new file is smaller.3 Read the size your system reports. If it is above 5 MB, that is the floor for this file, not a failed upload.
About this tool
Five megabytes is a large but reasonable size for a design review: several color pages, a portfolio excerpt, a long notebook scan. It is the wrong goal if a form asked for 100 KB. Use it to stop a 40 MB photo PDF from being rude while the images stay recognizable. Start with Recommended and go stronger only if you are still well above 5 MB.
Compress PDF to 5 MB 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 5 MB goal is applied here, and the PDF is not posted to a compressor.
- 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 “Compress PDF to 5 MB” upload my file?
Compress PDF to 5 MB reads the file in this tab. There is no upload step and no account.
What will “Compress PDF to 5 MB” actually change?
5 MB changes how hard images are squeezed. It does not delete pages or retype the words.
When is “Compress PDF to 5 MB” the wrong job?
Skip a 5 MB goal when the pages are already smaller, or when a color scan must stay sharp for an official check.
How do I check the result of “Compress PDF to 5 MB”?
Compare the downloaded size with 5 MB, then read a heading and a signature. Legibility outranks the exact number.
Can I run “Compress PDF to 5 MB” with Wi-Fi off?
Load this page, then turn Wi-Fi off and run Compress PDF to 5 MB again. A finished result is the proof that the file was not sent anywhere.
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Why is my PDF so large?Reduce PDF size without losing qualityIs it safe to upload PDFs to online tools?
Last updated 2026-09-27.