No. All PDF parsing, metadata reading, field rewriting, and document packaging export logic runs entirely offline in your local browser.
Up to 200MB per file. All built-in metadata can be edited: title, author, subject, keywords, dates, creator tool, and more.
No. Metadata is in the PDF file header as independent fields. Page text, images, tables, headers, footers, and layout are unaffected.
Yes. You can manually clear all metadata fields. The exported PDF carries no original author or creation source information.
No. Your local original PDF is never modified. All operations are in browser memory only. A new PDF with custom metadata is exported.
No export limits. Output PDF has no additional watermarks. No registration required. Free for personal and commercial use.
How It Works
This PDF metadata editor is built on the OpenDataLoader open-source local PDF parsing engine. All file processing is performed offline in your browser.
1. 1. Local PDF Document Parsing: Reads the complete binary data stream, separating page content from the header metadata dictionary. All data stays in browser local memory.
2. 2. Metadata Dictionary Read/Write: Displays existing metadata for editing. Users modify or clear fields. Page content layers are never accessed or modified.
3. 3. PDF Header Structure Rewrite: Preserves all original page resources. Only the header metadata block is replaced with new user-defined metadata.
4. 4. Local PDF Export: After reconstruction, packages a new PDF with modified metadata locally. One-click download.