Will this rewrite the whole PDF?

Only the metadata dictionary is updated. The content stays byte-identical where possible.

PDF Info

Inspect or update the document properties (title, author, subject, keywords) of a PDF.

Drop a PDF

or click to browse your computer

Accepted: PDF · Files stay on your device

How to pdf info

1
Upload your PDF.
2
Edit any of the metadata fields.
3
Click Save to download the updated PDF.

Understanding pdf info

Every PDF carries a document information dictionary — title, author, subject, keywords, producer, creation and modification dates — plus structural facts like page count and page dimensions. Most people never look at it, and that is exactly why it leaks information.

Files exported from Word or a design tool routinely carry the name of the person and the machine that made them. Before publishing a document, checking and clearing these fields is a two-minute privacy habit.

Reading metadata also answers practical questions fast: how many pages is this really, what page size is it, was it produced by a scanner or a word processor.

When you would use it

—Auditing a document for author and organisation names before publishing it.
—Setting a proper title so browsers and readers show something better than the filename.
—Checking the real page count and page size before sending a file to print.
—Identifying which application produced a suspicious or malformed PDF.

Practical tips

A descriptive title improves how the file appears in search results and in reader tab titles.
Clearing author and producer is the fastest privacy win before public distribution.
Metadata is not the only leak — check the visible content and, for scans, the page edges too.

Troubleshooting

Some fields are empty: They were never set by the producing application; that is normal and harmless.
Dates look wrong after saving: The modification date is refreshed when the file is rewritten, which is expected behaviour.

Frequently asked questions

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