Modify the author, title, keywords, and metadata properties of your PDF files instantly. A secure, private, and advanced local PDF editor with zero server uploads.
Select a file to edit its properties (Local Processing)
Separate multiple keywords with commas.
100% Offline Processing: This tool utilizes the PDF-lib engine to rewrite document properties directly inside your browser. Your files are never sent to external servers.
Whenever you create a Portable Document Format (PDF) file using software like Microsoft Word, Adobe InDesign, or Google Docs, the software automatically embeds hidden information into the file's background structure. This hidden information is known as Metadata. It includes details such as the document's Title, the Author's name, the Subject of the content, Keywords for searchability, and exactly which software (Creator/Producer) was used to generate the file. While this information isn't visibly printed on the physical pages of the PDF, it is easily readable by operating systems, search engines like Google, and anyone who checks the "Document Properties" in a PDF viewer.
Managing this metadata is absolutely critical for two main reasons: Search Engine Optimization (SEO) and Privacy. If you are uploading an eBook or a whitepaper to your website, search engines will read the PDF metadata to understand what the file is about. If your title is "Untitled Document" and the author is blank, your file will rank poorly. Conversely, if you are sharing a confidential document or submitting an anonymous manuscript, you might accidentally leak your personal name or company software details through the hidden metadata. A PDF Metadata Editor allows you to take control of this hidden data, giving you the power to optimize it for SEO or completely strip it for privacy.
If you search for "Edit PDF Metadata Online" on Google, you will be met with hundreds of free converter websites. However, the vast majority of these platforms rely on a server-side architecture. This means they force you to physically upload your potentially massive, private PDF file to their remote cloud servers. Once uploaded, their server changes the metadata and provides a download link. This creates a severe privacy and security vulnerability. If you are trying to remove metadata from a highly sensitive legal contract or an anonymous whistleblower report, uploading those documents to an unknown third-party server puts your data at massive risk of being intercepted or logged.
We engineered the Edit PDF Metadata PRO tool at DIO Tools Hub to completely eliminate this risk. By leveraging the highly advanced pdf-lib JavaScript engine, our tool operates on a strict 100% Client-Side architecture. When you drag your PDF into the upload zone, it is loaded directly into your device's local Random Access Memory (RAM). When you type your new properties, the mathematical structural update happens entirely on your own local CPU. Your private documents never leave your computer, guaranteeing absolute, uncompromising data security.
Basic PDF tools force you to type all the metadata from scratch, overwriting anything that was already there. Our PRO tool provides advanced, intelligent extraction capabilities designed for power users:
Will removing the author name remove it from the printed page?
No. Metadata is "data about data"—it is hidden information meant for software and search engines. If your name is physically typed as a text paragraph on page 1 of the PDF, this tool will not remove it. This tool only edits the hidden "Document Properties" dictionary.
Does modifying metadata break digital signatures?
Yes. If a PDF has been cryptographically signed (certified), altering *any* part of the file, including the hidden metadata, will invalidate the digital signature, as it breaks the hash checksum. Do not edit the metadata of a legally signed document unless you intend to resign it.
Is this PDF metadata editor completely free to use?
Yes! DIO Tools Hub provides this premium, highly secure document utility completely free of charge. There are no hourly limits, no premium paywalls, and no watermarks placed on your exported files.