Free · Private · In your browser

Deskew PDFLite

Basic deskew: manually set a small rotation angle to straighten scanned pages.

Drop your files here, or click to browse
Processed on your device — nothing is uploaded

How your files are handled

We built these tools so you never have to wonder where your documents go. Here is exactly what happens when you use them.

  • Your files are processed entirely in your browser using open-source libraries (pdf-lib, PDF.js, and others).
  • Nothing is uploaded to our servers. We have no backend that receives, stores, or scans your documents.
  • We cannot see, store, or access your files — not during processing, not after, not ever.
  • Processing uses your device's memory and CPU. Large files may take longer, especially on phones and tablets.
  • All tools are free with no paywall tricks, no hourly task limits, and no watermarks on your output files.

How it works

Three simple steps. Your files never leave your device, and the result downloads straight to your computer or phone.

Frequently asked questions

Common questions about privacy, pricing, and how these tools work.

More edit tools

Other free PDF utilities that work the same way — private, in-browser, no sign-up.

How to deskew PDF

Deskew PDF straightens pages that were scanned at a slight angle. You can nudge the rotation by hand or let it estimate the skew for you.

  1. Add your PDF; the preview renders on your device and nothing is uploaded.
  2. Drag the angle slider to straighten the page, or click Auto-detect skew to estimate it from page one.
  3. Check the live preview until the text sits level.
  4. Click Deskew PDF, then preview and download the straightened file.

Good to know: Basic auto-straighten.

Everything happens in your browser — your file is never uploaded, and there is no sign-up, watermark, or limit.

Frequently asked questions

Are my files uploaded to a server?

No. Every tool runs entirely in your browser using open-source libraries, so your file is processed on your own device and is never uploaded. We have no backend that receives, stores, or scans your documents.

Is it really free, and will there be a watermark?

Yes. There is no account, no sign-up, and no hourly limit, and the tools never add a watermark to your output. UnboundPDF is free and is not affiliated with Adobe.

Does it work on a phone or tablet?

Yes. The tools run in any modern mobile browser as well as on desktop. Because the work uses your device's own memory and processor, very large files simply take longer on phones.

How good is the automatic detection?

It is a basic auto-straighten that estimates the skew of page one within a few degrees. You can always fine-tune the angle by hand with the slider.

Will the text still be selectable afterward?

No. Straightening re-renders the pages as images, so selectable text is lost. That is expected for scans, which are already images.