# Docling 2.137.0: lesson test 2026-10-11 (passed) Cite: headlesson test:zcpidpi — Docling 2.137.0, 2026-10-11: 3/3 lesson steps passed (operator record). On 2026-10-11, the headlesson operator ran all 3 steps of this lesson with Docling 2.137.0 (macOS26.5.2 arm64; Python3.11.13 disposable venv; wheel-only PyPI installation; no LLM use), and all passed. The final Next step is advice and was not run. An independent check (revision 3fadc9d) covered: Independent trial and audit on one self-made English page: headings, text and a table compared with the Markdown output; the source PDF was rendered independently. Its limits: Sample-limited. Scanned images, Japanese OCR and complex real documents were not measured. This is the operator's own run, not a vendor claim. Sample tested: one born-digital English page (self-made). https://headlesson.com/tests/zcpidpi Record test:zcpidpi. Question: Convert one owner-chosen local PDF and inspect the output. ## Answer On 2026-10-11, the headlesson operator ran all 3 steps of this lesson with Docling 2.137.0 (macOS26.5.2 arm64; Python3.11.13 disposable venv; wheel-only PyPI installation; no LLM use), and all passed. The final Next step is advice and was not run. An independent check (revision 3fadc9d) covered: Independent trial and audit on one self-made English page: headings, text and a table compared with the Markdown output; the source PDF was rendered independently. Its limits: Sample-limited. Scanned images, Japanese OCR and complex real documents were not measured. This is the operator's own run, not a vendor claim. ## Tested on - Test date: 2026-10-11 - Record confirmed: 2026-10-11 - Version: 2.137.0 - Environment: macOS26.5.2 arm64; Python3.11.13 disposable venv; wheel-only PyPI installation; no LLM use - Sample tested: one born-digital English page (self-made) - Result: passed, 3/3 steps ## Lesson steps and what happened - 1. [passed] pip install docling - 2. [passed] docling ./sample.pdf - 3. [passed] Inspect the generated Markdown in the current directory against the original PDF. ## Next (advice, not tested) Next: Select the real document and output destination with the user, run docling , then compare text, tables and reading order with the original. Record missing or misread content before sending the output to a downstream LLM. ## Cautions recorded with the lesson These notes come from the lesson. Some describe failures seen in tests; others are general cautions. Each one is not a separately tested result. - Python 3.10 or newer and an owner-provided sample.pdf are prerequisites; first use may download model assets. - Software MIT licensing does not determine every model component or weight license. - Japanese OCR support is backend/version dependent and is not an accuracy guarantee. - Successful conversion or schema validation does not prove source-faithful transcription. - Confirm: Check formats/languages, model assets, output path and permission/costs for any downstream external transfer; a successful conversion is not an accuracy guarantee. ## What this record does not show - Not measured in this run: scanned pages and Japanese OCR. - Not measured in this run: multi-page documents and complex math. - Not measured in this run: downstream LLM accuracy. - Not measured in this run: the code license versus model-weight terms. - Whether an agent new to this tool can use it from this record alone (the operator wrote and ran the lesson). - Comparisons between models or clients. - Production use, accounts, or real customer data. - Behaviour of the latest version (the test is tied to the version and date below). - The final "Next" step is advice and was not part of the test. ## Primary record Operator record: a past lesson trial (legacy). It is not claimed to meet level L1 of run-task-contract/0.1.0. ## Independent check Independent check (revision 3fadc9d6215b): Independent trial and audit on one self-made English page: headings, text and a table compared with the Markdown output; the source PDF was rendered independently. Limits: Sample-limited. Scanned images, Japanese OCR and complex real documents were not measured. ## Evidence A non-public test report exists and is not published, so third parties cannot check it directly. ## Retrieve over MCP `headlesson_get id="app:docling" sections ["lesson","gotchas"]` on https://mcp.headlesson.com/mcp ## Source version This page is built from the catalog record app:docling at revision bc56389411af. It is not rewritten when the current lesson changes; a new test gets a new record ID. ## Sources (lesson text at the fixed revision) Each line names fields of this page (as JSON pointers into the .json version) and where they come from. Labels without a link are non-public sources. Fields not listed (such as test results) are the headlesson operator's own observations. - /question, /steps/2/step, /cautions/items/0, /cautions/items/3: headlesson editorial judgement (checked 2026-10-09, inferred, editorial) - /steps/0/step, /steps/1/step: [https://github.com/docling-project/docling/blob/main/README.md](https://github.com/docling-project/docling/blob/main/README.md) (checked 2026-10-09, primary, editorial) - /next_advice, /cautions/items/4: [https://raw.githubusercontent.com/docling-project/docling/main/README.md](https://raw.githubusercontent.com/docling-project/docling/main/README.md) (checked 2026-10-10, inferred, editorial) - /cautions/items/1: [https://github.com/docling-project/docling/blob/main/README.md](https://github.com/docling-project/docling/blob/main/README.md) (checked 2026-10-09, primary, official) - /cautions/items/2: [https://docling-project.github.io/docling/concepts/OCR/](https://docling-project.github.io/docling/concepts/OCR/) (checked 2026-10-09, primary, official) ## Corrections None. Page updated: 2026-10-13 (the date its content last changed). 要約（日本語）: Docling の lesson を 2026-10-11 に headlesson の運営が 2.137.0 で試し、3/3 段が通った（passed、運営の実測で製品側の主張ではない）。この記録が示さないこと・独立確認の状況は本文のとおり。