LocalPDFlab

Privacy cleanup before sharing

Remove hidden information from a PDF

Inspect information that is not obvious on the page, choose what to remove, and create a clean sharing copy locally in your browser.

Selective privacy scanFiles stay on your deviceNo account or watermark

Drop a PDF here, or click to choose one

Find hidden PDF information, choose what to remove, and create a private sharing copy.

Files stay on your device

Enter PDF password

Enter the password to open.

Quick start

How to remove hidden PDF information

  1. 1

    Choose a PDF

    Select one PDF from your device. Enter its opening password if the file is protected.

  2. 2

    Review the privacy scan

    Check the detected metadata, attachments, bookmarks, comments, forms, scripts, layers, thumbnails, labels, and accessibility structure.

  3. 3

    Select what to remove

    Use selective cleanup to preserve searchable visible content, or choose a visible-page rebuild for stronger hidden-content removal.

  4. 4

    Create and review a new copy

    Remove the selected information, download the cleaned PDF, and inspect important pages before sharing it.

What the privacy scan checks

A PDF can contain information beyond the visible page. The scan inventories supported document properties and interactive structures before anything is removed. A zero means the browser did not detect that category through the supported PDF interfaces. It is not a security certification.

CategoryWhat it may contain
MetadataAuthor, organization, software, dates, keywords, copyright information, and XMP data.
Embedded contentAttachments, comments, file annotations, page thumbnails, and multimedia objects.
NavigationBookmarks, external website links, email links, automatic actions, and custom page labels.
Forms and scriptsStored field values, calculations, JavaScript, launch actions, submission actions, and XFA logic.
Hidden page contentOptional layers, covered or transparent text, cropped-away material, and overlapping underlying objects.

Choose the cleanup method that matches the risk

Recommended for most documents

Selective cleanup

Removes only the selected structures and rewrites the PDF without orphaned objects. Searchable text, vectors, images, and unselected features remain when possible.

For hidden page content

Visible-page rebuild

Renders each page without annotations and creates a new image-only PDF. This discards underlying page objects, optional layers, links, forms, bookmarks, tags, and attachments.

Removing hidden information is not redaction

This tool does not search for Social Security numbers, bank details, medical information, legal text, or other visible confidential content. It also does not make a white box into secure redaction. If sensitive information can be seen on the page, use Redact PDF first, apply the redactions, and then remove hidden information from the redacted copy.

What changes after cleanup

  • Digital signatures become invalid. Any byte-level rewrite changes the signed document. Keep the signed original when verification matters.
  • Password protection is not retained. If the cleaned copy needs an opening password, apply protection after cleanup.
  • Accessibility can be affected. Leave accessibility structure selected for retention unless your requirements specifically call for its removal.
  • The file size may change. Structural rewriting changes compression, while a visible-page rebuild stores page images and may create a larger file.

Frequently asked questions

What hidden information can a PDF contain?

A PDF may contain metadata, comments, attachments, bookmarks, form values, scripts, automatic actions, optional layers, embedded thumbnails, page labels, accessibility tags, and private data created by other applications. Some PDFs can also retain transparent, covered, cropped, or overlapping page content.

Does selective cleanup preserve searchable text?

Yes. Selective cleanup rewrites supported PDF structures while keeping visible text, vectors, and images searchable and selectable when possible.

When should I use Visible-page rebuild?

Use it when hidden text, layers, cropped-away content, or overlapping underlying objects are a concern. It creates a new image-based PDF from the pages shown by the browser, so search, selection, forms, links, bookmarks, and accessibility tags are not retained.

Is removing hidden information the same as redaction?

No. This tool removes selected nonvisible document data. It does not locate or permanently remove sensitive text and images that are visibly printed on a page. Use Redact PDF first for visible confidential content.

Will digital signatures remain valid?

No. Removing information changes the PDF bytes and invalidates existing digital signatures. Keep the signed original if validation matters, and sign the cleaned copy afterward when required.

Can I remove hidden information from a password-protected PDF?

Yes, if you know the opening password. Unlocking and processing take place locally in your browser. The cleaned download is not password protected unless you protect it again.

Does this tool guarantee that every hidden item is gone?

No browser tool can guarantee detection of every malformed, proprietary, steganographic, or newly developed technique. Review the result and use your organization's approved security process for regulated or untrusted documents.

Does the PDF leave my device?

No. The PDF is inspected and rewritten locally in your browser. It is not uploaded to a conversion server.

Next steps

Related PDF tools

Choose another private, browser-based tool for the next step in your document workflow.