Blog
Guides, comparisons, and updates on PDF-to-markdown conversion.
Choosing a parser? Start with the comparison guide, then work through typed elements versus complete Markdownor a controlled RAG evaluation.
Python Invoice OCR: Extract PDF Invoices to Markdown and CSV
Convert and validate invoice content before extracting fields. A conversion result is not an approved bill, and a syntactically valid JSON extraction is not verified accounting data.
How to Build a RAG Pipeline with PDF Documents
A useful PDF retrieval pipeline keeps conversion, chunking, indexing and answering as separate steps. Test each boundary before automating a large corpus.
Extract Tables from PDFs in Python as Markdown
Parse validated GFM output locally into CSV, while rejecting complex HTML tables instead of flattening them.
Markdown for LLMs: Format PDFs for Better RAG Retrieval
Useful Markdown keeps headings, lists and table relationships visible. Cleaner syntax can help a pipeline preserve context, but retrieval and answer quality still need measurement.
The Hidden Cost of Bad PDF Parsing in RAG Systems
A wrong answer can originate in conversion, chunking, retrieval or generation. Inspect the source PDF and retrieved passages to find which boundary lost the needed information.
PaddleOCR vs Tesseract for PDF OCR
Historical PaddleOCR and Tesseract evidence, with the current API and benchmark limits clearly separated.
PDF Parsing in 2026: Tesseract vs PyMuPDF vs Vision Models
Compare current documented OCR, Markdown and table-processing options without unsupported rankings.
PDF Structure: Why Text Extraction Is Hard
A PDF can describe glyph positions and page graphics without providing the logical reading order your application needs. Some PDFs also contain tags, form fields and other structure; inspect the actual file instead of assuming all PDFs lack semantics.
pdfToMarkdown vs LlamaParse for RAG: A Deeper Comparison
Evaluate LlamaParse and pdfToMarkdown for RAG with fixed documents, chunking and queries; check retrieved evidence, citations and duplicate ingestion.
Document AI Without Fine-Tuning: How Vision-Language Models Changed OCR
How visual layout cues support document conversion, with historical provider evidence and current limits distinguished.
Unstructured Alternative for RAG: When to Swap partition_pdf for an API
Choose between Unstructured typed elements, local or hosted processing, and a complete Markdown API response using a matched PDF example.
pdfToMarkdown vs LlamaParse: PDF Parsing for LLM Pipelines
Compare LlamaParse output and API integration with a synchronous PDF-to-Markdown endpoint, without assuming a required LlamaIndex stack.
pdfToMarkdown vs Mathpix: Which PDF API Should You Use?
Compare Mathpix MMD and plain Markdown conversion with pdfToMarkdown output, then evaluate equations, tables and downstream cleanup.
Why Convert PDFs to Markdown for LLMs, RAG, and Search
Markdown provides readable headings, lists and tables for search, review and LLM workflows. Native PDF support varies by tool; conversion is useful when you need OCR or a reusable textual artifact.