A primer for developers - plus a look at what ComPDF AI is doing on this path
If you search for 'PDF parsing' or 'PDF parser', you'll usually see a long list of tool names and a line of marketing copy. But once you plug these tools into RAG, contract review, or document structuring workflows, you realize how much engineering sits behind those four words. This article explains the fundamentals from the ground up, and ends with a quick look at an open-source solution we've built.
I. A Real-World Scenario
Last week I helped a friend who is building a legal RAG system debug an issue. They used a commercial PDF parsing SaaS and fed 1,000 contracts into an LLM. When the model answered customer questions, it cited:
"According to the content you provided, paragraph 3 on page 8 says..."
