Read PDF metadata
Read PDF metadata; processing runs in the uk-pdf WebAssembly module and files stay in the browser.
Runs in your browserEvery computation happens in your browser — your data never leaves this device.
PDF (base64)
Read PDF 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pdfgetyuandata