Docling Studio — open-source visual inspection tool for Docling pipelines

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Hey everyone :waving_hand:

I built Docling Studio, an open-source visual inspection layer for Docling.

The problem: if you’ve used Docling, you know the extraction engine is powerful — but validating outputs means digging through JSON and mentally mapping bounding box coordinates back to the original pages. No visual feedback loop.

What Docling Studio does:

  • Upload a PDF, configure your pipeline (OCR engine, table extraction, enrichment)

  • Run the conversion

  • Visually inspect every detected element — bounding boxes overlaid on original pages, element types, content preview on click

  • Two modes: local (embedded Docling) or remote (Docling Serve)

Stack: Vue 3 / TypeScript + FastAPI / Python, fully Dockerized (multi-arch), 180+ tests.

Why it matters for RAG workflows: without seeing what Docling extracts, it’s hard to evaluate chunk quality before feeding your pipeline. Docling Studio gives you that feedback loop.

:link: Repo: github.com/scub-france/Docling-Studio
:link: Try it: Docling Studio on HF Spaces

The project is part of the Docling ecosystem (Linux Foundation AI & Data). Feedback, issues, and contributions welcome — especially interested in hearing what features would help your document AI workflows.

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Great to see this :clap:

Debugging document pipelines is always tricky, so having a visual tool like Docling Studio to “see what’s happening” is really useful. This should make testing and improving results much faster—especially for real-world use cases :rocket:

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Thanks!
And yeah that’s literally why I built it :slight_smile:
I was debugging a RAG pipeline in prod and got tired of staring at JSON trying to figure out what Docling was actually catching. So I made the tool I wished I had.

Glad it clicks!

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