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?
Weesize vs PDF24
Get any file to the size you need. Privately.
Direct comparison: Weesize vs PDF24
See how Weesize compares on privacy, speed, limits, and file handling.
| Feature | Weesize | PDF24 Online |
|---|---|---|
| Processing Architecture | 100% Client-side (In-browser WASM) | Cloud servers (Upload required) |
| Privacy & Tracking | 0 Trackers, 0 Uploads, 0 Cookies | Ad scripts, trackers, server storage |
| Exact Size Targeting | Exact target slider (100 KB, 200 KB, etc.) | Fixed presets (Extreme, Recommended, Less) |
| Task Speed | Instant local compute (No network wait) | Dependent on internet upload bandwidth |
| Usage Limits & Accounts | Free forever, unlimited, no sign-up | Free daily limits or sign-up gates |
| Offline Functionality | Full offline support (PWA) | Requires continuous internet access |
| File Size Cap | No artificial cap (device memory only) | Upload file size thresholds |
Try the private alternative
Compress, merge, and organize PDFs right in your browser with zero file upload.
Architecture & Privacy Analysis
Weesize keeps the file on the device and refuses jobs it cannot check. PDF24 offers a wider or more familiar set, and the web version processes files on their side. PDF24 publishes online tools and a desktop application. The desktop app is a genuine local option, and the breadth of their tools is why people recommend them. The online side uploads if that is the side you use. This page does not blur the two products or guess their current terms. Evaluate the desktop app if you want an installer. Use this site if you want the browser you already have, with no upload and a narrower list of finished jobs. Last reviewed 2026-09-27. Their logo is not shown.
Weesize vs PDF24 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.
Key Architectural Points
- No upload on this site: the file is not the price of the tool.
- PDF24’s strength is stated without a slogan war.
- Unfinished jobs are labeled, not imitated.
Frequently asked questions
Does “Weesize vs PDF24” upload my file?
Weesize vs PDF24 reads the file in this tab. There is no upload step and no account.
What will “Weesize vs PDF24” actually change?
The difference is where the bytes go. The PDF24 website processes uploads. Weesize does not make that request.
When is “Weesize vs PDF24” the wrong job?
Skip Weesize vs PDF24 if you need a feature neither side implements in the open.
How do I check the result of “Weesize vs PDF24”?
The review date is 2026-09-27. Check PDF24’s site before you quote a quota from memory.
Can I run “Weesize vs PDF24” with Wi-Fi off?
Load this page, then turn Wi-Fi off and run Weesize vs PDF24 again. A finished result is the proof that the file was not sent anywhere.
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Last updated 2026-09-27.