Read PDF metadata
Read a PDF title, author, subject, keywords, creation and modification dates, page count and version, listing missing fields explicitly.
Runs in your browserEvery computation happens in your browser — your data never leaves this device.
PDF (base64)
Metadata
Missing fields are null and listed under missing.
Loading the PDF module…
Paste the PDF base64 to read its metadata
Pages: 0 · Fields present: 0
What this tool does
- Check a document title and author.
- Inspect metadata before bulk organising.
- See whether a file was modified via modDate.
Example
Input
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
Output
{'author': 'Ada', 'creationDate': None, 'creator': None, 'keywords': None, 'modDate': None, 'pages': 3, 'producer': None, 'subject': None, 'title': 'UniKit PDF'}Metadata strings follow the PDF decoding rules, so Chinese titles come back correctly; encrypted PDFs must be decrypted first.
Frequently asked questions
What if a field is missing?
It comes back as null and is listed in stats.missing.
Can encrypted PDFs be read?
No, it returns encrypted; decrypt the file first.
Is XMP metadata read?
No, only the document Info dictionary.
Keywords：pdfwasmofflinePDF 元数据读取