Support for Classification Metadata (DDC, LCC, BISAC) in Metadata Update Jobs

[rrekapalli]

What's Your Idea?

Hi Grimmory team,

First off, thank you for building such a useful tool for managing personal libraries.

I’d like to request support for enriching book metadata with standard classification systems — specifically:

• Dewey Decimal Classification (DDC)
• Library of Congress Classification (LCC)
• BISAC Subject Headings (BISAC)

📌 Requirement

During the metadata update/enrichment job (especially when ISBN is available), Grimmory could:

1. Fetch classification data from external sources (e.g., Open Library, Google Books, or library catalogs)
2. Normalize and map the results
3. Store them as part of the book metadata

🏷️ Suggested Storage

• EPUB: Add as <dc:subject> entries
• PDF: Store in keywords / subject fields
• Internal DB: Store as structured fields (ddc, lcc, bisac[])

This would be especially useful for users managing large libraries or integrating Grimmory with external cataloging systems.

Happy to contribute or help with implementation if needed.

Thanks!

Why Would This Be Helpful?

🚀 Benefits

• Enables better categorization and filtering
• Aligns with library standards
• Improves search and analytics capabilities
• Helps users organize large collections more effectively
• Can organize using Subject/Topic wise shelves

Anything Else? (Optional)

No response

Want to Help Out?

Just sharing the idea for now

Have You Considered Any Alternatives? (Optional)

No response

Before Submitting

• I've searched existing issues and confirmed this feature hasn't been requested yet