PDF Restriction Compatibility Check
Check whether the current browser PDF library can re-save your file. It cannot decrypt encrypted PDFs, remove an unknown password, or guarantee removal of permission restrictions.
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A readable re-save is a compatibility result
The original stays separate. The generated copy is reopened in the browser and its page count is checked, but permissions and complex interactive features still require manual verification.
What the Compatibility Check Does
This page uses PDF-lib to test whether a PDF can be loaded and written again in the browser. PDF-lib's official documentation states that encrypted documents are not supported. Re-saving an ordinary unencrypted PDF is not the same as decrypting it or reliably removing its permission controls.
If a PDF asks for a password, reports encryption, contains a digital signature, or has permissions you must preserve, use the document owner's password and a PDF application that explicitly supports that encryption method. Do not rely on a compatibility re-save for legal, signed or archival records.
Important: only process documents you own or are authorised to modify. This tool does not bypass unknown passwords and now fails closed on encrypted input instead of using PDF-lib's discouraged ignoreEncryption option.
What a Re-save Can and Cannot Tell You
A successful re-save does not guarantee that every viewer's printing permission will change.
Text selection depends on the PDF content and viewer, not only a permission flag.
Forms, signatures and annotations can change when a PDF is rewritten; verify them independently.
The selected file is processed in this browser tab. Closing the tab clears the working copy held by this page.
How to Check a PDF in 3 Steps
- Select an unencrypted PDF — use a file you own or are authorised to modify.
- Wait for validation — the tool loads, re-saves, and opens the new bytes again to confirm they form a readable PDF.
- Download and compare — keep the original, then verify pages, forms, links, annotations, signatures and required permissions in your normal PDF reader.
When a Compatibility Copy May Help
- Your own exported files: test whether a fresh structural rewrite opens in a viewer that rejected the original.
- Non-archival copies: create a separate working copy of an ordinary unencrypted PDF while retaining the source.
- Viewer troubleshooting: determine whether the browser library can parse and write the document at all.
Frequently Asked Questions
No. It only attempts a structural re-save of an unencrypted PDF. A successful output does not prove that printing, copying, editing, or annotation permissions changed in every viewer.
No. This tool cannot decrypt or bypass a password. It only attempts a compatibility re-save when PDF-lib can load the unencrypted input, and that re-save does not guarantee a change to usage restrictions.
Only process a document you own or are authorised to modify. Copyright, contracts and access rules vary by document and jurisdiction, so this page does not make a legal determination for you.
The compatibility operation runs with client-side PDF-lib rather than sending the selected PDF to PDFdukan for processing. The page can still request normal site assets, analytics and third-party libraries.
Yes. Rewriting a PDF can change metadata or affect complex forms, annotations, signatures, links and unsupported structures even when visible pages appear similar. Keep the original and verify the result.
Yes. The compatibility check requires no account and adds no watermark. Your browser and device memory still determine the practical file size it can process.
The interface is responsive, but large or complex PDFs may exceed a phone browser's available memory. For important files, compare the result in a full PDF reader.