GuidesDocument processing guide5 min read

AI document processing: from files to usable source text

Documents are rarely ready for AI workflows as-is. The useful layer is the cleaned source text plus enough metadata and evidence to understand where each chunk came from.

Step 1

Extract source text

The first task is turning files into text and metadata that can be reviewed. File name, source, page range, timestamps, and document type help make the output traceable.

Text extractionMetadata capturePage contextReviewable output

Step 2

Clean before chunking

Headers, footers, repeated legal text, tables, and OCR noise can weaken retrieval. Cleaning should happen before content is split into chunks.

Remove noisePreserve tables carefullyDeduplicate repeatsNormalize structure

Step 3

Attach evidence

Each processed unit should be traceable back to the original file, page, or section. Evidence makes it easier to debug hallucinations, stale answers, and missing context.

Document IDPage rangeSource URLProcessing run

Step 4

Price the expensive steps

Document parsing, advanced extraction, embeddings, and AI enrichment can cost more than simple page crawling. A metered model keeps future processing sustainable.

Parsing unitsChunk countsEmbedding tokensAI pass-through

FAQ

Quick answers

Is document processing the same as RAG?

No. Document processing prepares source material. RAG uses prepared source material during retrieval and answer generation.

Why is source evidence important?

Evidence helps teams trace a chunk or answer back to the original file, page, section, or processing run.

Should document processing be unlimited?

No. Parsing, OCR, embeddings, and AI enrichment have real compute costs, so production processing should be metered.