PDF Metadata Editor
Read and rewrite a PDF's title, author, subject and keywords.
Drop a PDF hereor click to browse — it stays on your device
Document properties
What a reader's tab and window title show, in place of the file name.
Separate them with commas.
All four fields are written every time, so clearing one here clears it in the file. The pages themselves aren’t touched, and neither is the line saying which program produced the PDF. Any of this can still be read by anyone who opens the file — it’s a label, not a secret. It runs in your browser; nothing is uploaded.