Konvizi
Free No upload
Shrink PDFs that are too large to email or upload to a website, without uploading anything.
Drop your PDF files here
or
Your files stay on your device
Konvizi’s “Compress PDF” tool is free, with no sign-up, no watermark and no file limit. All the processing happens in your browser, on your device: your files are never uploaded to a server, which makes it suitable for personal and confidential documents.
Drag your PDF files into the area above or click “Choose files”. You can add several at once.
Your browser recompresses each page and shows you the size before and after. Nothing is sent over the internet.
Download your files one by one, or all together with “Download all”.
A scanned PDF, or one full of photos, quickly exceeds the size an email service or an online form will accept. To shrink it, Konvizi recompresses each page as an image, sharp enough to read on screen and to print. This works very well on scans and photos; a PDF that contains only text is already small and is left as it is.
PDF is the universal document format: it looks the same on every device, keeps its layout and prints without surprises.
Contracts, payslips, bank statements, tax returns: PDFs often hold sensitive information. With Konvizi they never leave your device, are stored nowhere and read by nobody. Most PDF tools copy pages without recompressing them: selectable text, links and quality are preserved.
Your files never leave your device. No upload, no storage.
No upload and no queue: the conversion starts right away.
As many files as you like, with no imposed size limit.
No sign-up, no watermark, no subscription.
| Konvizi | Typical online converter | |
|---|---|---|
| Where your files are processed | In your browser, on your device | On the service’s servers |
| Upload to the internet | None | Required, then you download the result |
| Storage of your files | None: nothing is stored | Stored on a server, at least while processing |
| Waiting time | Starts instantly | Upload time, sometimes a queue |
| Account | Never required | Often required beyond a few files |
| Watermark and limits | No watermark, no maximum number | Common on free plans |
Yes, completely. No sign-up, no watermark, and no maximum number of files.
No. Everything happens in your browser, on your device. Your files are never sent over the internet: nobody but you can see them.
Slightly: the pages are saved as images at 144 dots per inch, which stays sharp on screen and in everyday printing. In exchange, the text can no longer be selected or searched, and links are no longer clickable. Keep the original if you need it.
Because it is already small. A PDF made mostly of text weighs very little: turning it into images would make it larger. In that case, Konvizi tells you so and does not create a new file.
Open your browser’s developer tools (F12 key), go to the “Network” tab and run a conversion: no request carries your file. The site also enforces a security rule (Content-Security-Policy) that forbids the browser from contacting any site other than konvizi.com, and konvizi.com is a static site with no service able to receive files.
Yes. Konvizi works in the browser of your phone or tablet (Safari, Chrome…) just like on a computer, with no app to install. Very large files are processed faster on a computer, which has more memory.