CHECK
Inspect one local document model
PDF PRIVACY REVIEW
Check What Your PDF Reveals
Scan a PDF for metadata, hidden content, comments, form data, attachments, external actions and other privacy risks before you share it.
This tool reports checks, findings and limitations. It does not certify that a document contains no private information.
PDF document
Findings
Metadata
Low · Review
Covered text
High · Review
Attachment
Medium · Review
Drop a PDF to check
PDF onlyPrivacy scanLocal browser inspectionNo storage
FIX
Choose supported cleanup actions
VERIFY
Re-scan the actual output
ATTACHMENTS
Embedded files and objects
ACTIONS & LINKS
JavaScript, URLs and submissions
PII
Common sensitive-data patterns
How it works
One document model, transparent coverage
Open locally
PDF.js and pdf-lib inspect one in-memory copy.
Review categories
Each category reports Checked, Partial or Not checked.
Act deliberately
Use real Nexynto tools for the specific objects you decide to fix.
Why PDFs can reveal hidden information
A PDF is a container, not just a picture of pages. Metadata, annotations, fields, attachments, active actions, optional layers and extractable text can remain even when they are not obvious during visual review.
Privacy of this privacy check
- Checks run locally in this browser.
- The PDF is not uploaded or stored by Nexynto.
- No OCR or backend scan runs in Command 1.
- No filenames, document text, metadata values, links or detected PII are sent to analytics.
Editorial guides
Understand the evidence before sharing
PDF Privacy · 9 min read
What Information Can a PDF Reveal About You?
Understand visible pages, metadata, review artifacts, embedded objects and active document behavior.
Read guideMetadata · 8 min read
How to Check a PDF for Hidden Metadata Before Sharing
Review document information and XMP fields without confusing normal metadata with confirmed risk.
Read guideRedaction · 8 min read
Why Blacking Out Text Is Not Always Secure PDF Redaction
Learn why a dark rectangle may leave the original searchable text inside the file.
Read guideSanitization · 10 min read
PDF Redaction vs Sanitization: What’s the Difference?
Separate page-content removal from document-wide cleanup of metadata, actions and attachments.
Read guidePrivacy Workflow · 11 min read
How to Remove Author Names, Comments and Hidden Data From a PDF
Build a practical pre-sharing cleanup and verification workflow using the right tool for each object.
Read guideFAQ
PDF privacy questions
What information can a PDF reveal?+−
A PDF can contain document metadata, author names, comments, form values, attachments, links, active actions, hidden layers and extractable text beyond what is obvious on the page.
How do I check PDF metadata?+−
Select a PDF and review the Document identity and Metadata categories. Common document-information fields and accessible XMP properties are listed separately.
Can a PDF contain hidden text?+−
Yes. Text can be placed outside the page, rendered very small, stored beneath an overlay or used as an OCR layer. Context determines whether it is a privacy concern.
Can comments reveal reviewer names?+−
Yes. Annotation objects can retain reviewer names, comment text, dates and review history.
Can a PDF contain embedded files?+−
Yes. A PDF may carry attached files that are not visible in the ordinary page view. The checker reports them without opening or extracting them.
Can a PDF contain JavaScript?+−
Yes. PDFs can contain document scripts and automatic or form actions. This checker inspects for them but never executes document JavaScript.
How can I check whether redaction is secure?+−
The checker looks for selectable text beneath filled rectangles and other suspicious text conditions. Detection is useful but not complete; verify sensitive documents with a proper redaction workflow.
Can PDF forms retain entered data?+−
Yes. Current values, default values and field structure can remain inside an AcroForm even when the page looks complete.
Does this tool guarantee a PDF is private?+−
No. It reports what was checked, what was found and where coverage is limited. It does not provide a complete privacy guarantee.
Is my PDF uploaded to a server?+−
No. Command 1 opens and scans the PDF in your browser. OCR and backend scanning are not used, and the selected file is not stored by Nexynto.
Can I use the privacy checker on mobile?+−
Yes. Summary, categories and findings adapt to small screens, while page preview opens as a separate sheet. Large PDFs may work better on a device with more memory.
Can Nexynto remove hidden PDF information?+−
It can remove supported metadata, comments, form values, attachments and active actions, then re-scan the generated copy. Partial coverage remains clearly identified.
What is the difference between checking and sanitizing a PDF?+−
Checking inspects without changing the file. Sanitizing creates a separate rewritten copy with only the fixes you explicitly confirm.
Will cleaning a PDF invalidate a digital signature?+−
It may. Any rewrite can invalidate an existing cryptographic signature, so signed documents require an explicit acknowledgement before cleaning.
Can I verify the PDF again after cleaning?+−
Yes. The cleaned copy is automatically re-scanned using the same inspector, and you can run another review without selecting the file again.
What does the privacy report prove?+−
It records the checks performed, coverage, findings and verified changes. It does not guarantee that the document contains no sensitive information.