Document OCR for RAG & Vector Search

Extract clean Markdown and structured text from scanned documents to eliminate retrieval noise in RAG systems.

Drop your file here

PDF, PNG, JPG, WebP, BMP, HEIC

PDF up to 1 GB · images up to 20 MB

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Tips for a clear photo

Lay the page flat.
Use even light, with no shadows.
Turn off the flash to avoid glare.
Fill the frame with the page.

How Poor OCR Corrupts RAG Pipelines

Garbled characters and broken words degrade embedding vectors and cause similarity search failures.
Unstructured OCR dumps split table rows and headings awkwardly across chunk boundaries.
Repetitive page headers and footers get embedded repeatedly, polluting search results.
Non-Latin languages like Urdu and Arabic suffer severe character fragmentation in standard OCR tools.

Chunk-Ready Markdown Export

Outputs clean Markdown with proper H1-H6 headers and table grids for semantic chunking.

High Character Fidelity

Accurately extracts text across 100+ languages to ensure reliable dense and sparse embeddings.

Header & Footer Isolation

Removes distracting running headers and page numbers so chunks contain only relevant content.

Structured JSON Output

Access bounding boxes, word confidences, and page-level metadata for advanced retrieval.

Developer API for Ingestion

Automate document ingestion into LangChain, LlamaIndex, and custom pipelines via REST API.

Frequently Asked Questions

Why is high OCR accuracy critical for RAG systems?

Embedding models rely on precise text representations. Misspelled words or scrambled characters create faulty vector embeddings, causing retrieval failures and model hallucinations.

Can I use FastOCR in an automated ingestion pipeline?

Yes. FastOCR provides a REST API that returns clean text, Markdown, or structured JSON for automated RAG indexing.

What file formats can FastOCR ingest for RAG?

You can upload PDF files up to 1GB, as well as PNG, JPG, WebP, and HEIC image formats.

Need Multi-Page PDF OCR or Batch Processing?

Extract text from scanned PDFs, translate single images into 65+ languages, or upload several files at once on the main FastOCR engine. See pricing and limits

Explore Main FastOCR Engine →