Control who can open a document and what stays in it. Because these tools run on your device, a file worth protecting is never handed to a server in order to protect it.
Remove a PDF Password — Remove the password from a PDF you can already open, so it opens without one.
Flatten a PDF — Flatten a PDF so form fields, annotations and signatures become part of the page and can no longer be edited.
Edit PDF Metadata — View and change a PDF’s title, author, subject and keywords.
Edit PDF Online — Edit a PDF in your browser: change the text that is already there, add text, images, shapes and links, whiteout, fill forms and sign.
Questions
Is blacking something out with a rectangle enough?
No. PalPDF’s whiteout is for visual corrections, not secure redaction. It removes supported text and image content, but form values, embedded content and unsupported data may remain recoverable. Do not rely on it to hide sensitive information.