THE GITHTML FIELD GUIDE
Build Sphinx HTML for a local documentation review
Use Sphinx’s HTML builder on an existing documentation source tree, writing output to a dedicated build directory. Review build messages and inspect the generated pages before sharing them. Sphinx produces a documentation site with supporting assets; a successful build is not a guarantee that one copied HTML file will work independently in a reader.
Understand the project before building
Find the source directory, conf.py, and documented development environment. Sphinx configuration and extensions can execute Python code, so review an unfamiliar project and use an appropriate trusted environment before running it.
Check whether API documentation extensions import the project’s modules or require additional tools. A documentation build may have dependencies beyond Sphinx itself. Follow the maintained project instructions rather than installing guessed packages until the command happens to finish.
Select a safe output directory
The example uses docs as the source and build/reading-html as a dedicated output path. Substitute the actual source directory and choose an output location that contains no source or unrelated work. Keep generated files out of the authoring tree.
Run the local build and read its warnings. Missing references, unavailable images, and extension failures deserve investigation. Do not treat the existence of index.html as proof that every page was generated with the intended content.
sphinx-build -b html docs build/reading-htmlReview more than the landing page
Walk a short reader journey from the introduction into a task guide and its reference material. Inspect headings, code blocks, tables, admonitions, and cross-references. Compare important examples with their source text and the intended product version.
Open a deep page directly to check whether it remains understandable outside the site’s homepage. A useful exported document includes its own title and context, even when the broader site supplies navigation and shared styling.
Choose how the output will be consumed
Keep the generated site’s asset directories together when evaluating the complete build. Hosting it, distributing an archive, and selecting HTML files for gitHtml are different delivery choices with different assumptions.
For a simple offline reading task, consider a purpose-built export and verify its dependencies separately. Record the source revision, Sphinx version, relevant extensions, and output directory. That information helps the next reviewer distinguish a source defect from a stale build or a packaging problem.
Sources and further reading
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