OpenThink is actively being built — what’s here is real, and the rest is coming with care.

Contribute to the Commons

Upload a PDF to make it freely available to everyone, forever. No account required — just a file, a title, and a brief description of why it matters.

Requirements

  • Text-based PDF only — image-only scans cannot be searched or indexed. If you only have a scan, note it in the description.
  • No duplicates — if the same source exists, we'll link you to it instead of creating a new entry.
  • Open access content — this is a commons for freely available sources. Don't upload copyrighted paywalled content.
  • Once uploaded, it's permanent — sources are never removed from the commons.
Step 1: Choose your file

Drop a PDF here or click to browse

Text-based PDF only · Max 50MB

Step 2: Describe the source
Step 3: Categorize (at least one)

Select fields that apply. If none exist for your source, create a new one.

Step 4: Add tags (optional)

Comma-separated tags to help others find this source