PDF Metadata Editor

Free Online PDF Metadata Editor

Every PDF carries a small set of document properties - title, author, subject, and keywords - that appear in file managers, search results, and the "Document Properties" panel of PDF readers. These are often left blank, set to a generic filename, or carried over incorrectly from a template. LovePDFImg's Metadata Editor lets you read the current values and update them directly.

Changing metadata doesn't touch the pages of your document at all - it only updates the descriptive fields stored alongside the content. This is useful for giving a document a proper title before sharing it, crediting the right author, or clearing out leftover information from a source template. Everything is read and written locally in your browser; your file is never uploaded anywhere.

Cleaning up metadata is a common step before publishing or archiving a document - a PDF titled "Untitled_Document_final_v3" looks unpolished in a file listing, while a PDF with a clear title and correct author metadata is easier to find, cite, and organize later.

How the PDF Metadata Editor Works

Using pdf-lib, the tool reads the document's information dictionary - a small set of key-value fields defined by the PDF specification - and displays the current Title, Author, Subject, and Keywords values. When you save your changes, those same fields are updated in the rebuilt PDF, while every page's content stream is copied over untouched. Because metadata fields are separate from the page content, this operation is fast and has zero impact on how the document displays or prints.

Key Features

• Edit core metadata fields: Title, Author, Subject, and Keywords.
• No content changes: Pages, text, and images remain untouched.
• Clear existing metadata: Remove leftover or inaccurate values.
• Browser-based processing: Your PDF never leaves your device.
• Free and unlimited: No account, no daily cap, no watermark.
• Instant results: Metadata updates complete in seconds.

Who Uses PDF Metadata Editor?

Businesses: Set a proper title and author before publishing reports, whitepapers, or brochures externally.

Researchers and students: Correct author and title metadata to make citations and reference management tools work correctly.

Content creators: Add relevant keywords to help documents surface properly in file search or document management systems.

Personal users: Clean up leftover metadata from a template or scanning app before sharing a personal document.

Why Choose LovePDFImg to Edit PDF Metadata?

Metadata editing is a less common feature among PDF tools, and where available (like in Adobe Acrobat), it usually requires paid software or a server upload. LovePDFImg offers this entirely free, processed in your browser using pdf-lib, with no account requirement and no file ever leaving your device.

Technical Explanation: PDF Metadata

PDF documents store descriptive information in an "Info Dictionary," a small set of standardized key-value pairs defined separately from the page content streams - this is why editing metadata is essentially instantaneous and never touches the visible document. Some PDFs also carry XMP metadata, a more extensive XML-based format used by certain publishing and design tools; this editor focuses on the standard Info Dictionary fields, which cover the properties most PDF readers and file systems display.

How to Edit PDF Metadata

1. 1Upload your PDFDrag and drop your file or click to browse and select it from your device.
2. 2Review the current metadataThe Title, Author, Subject, and Keywords fields are filled in with the document's existing values, if any.
3. 3Edit the fieldsUpdate, add, or clear any of the fields as needed.
4. 4Click "Save Changes" and downloadA new PDF is generated with the updated metadata, ready to download.

Frequently Asked Questions