dominfo

Dominfo is a software utility and library designed to inspect and summarize the Document Object Model (DOM) of HTML and XML documents. It provides a compact view of the structure and content of a document, including counts of nodes, element types, attribute usage, and textual content.

Core features include DOM parsing, tree traversal, and reporting. It can compute statistics such as total nodes, maximum and average depth, the most frequent element names, and distribution of attributes. It supports querying the DOM with CSS selectors and can emit output in machine-readable JSON or human-readable text.

Dominfo is usable in browser environments via the standard DOM API, and in server-side contexts through libraries such as jsdom, htmlparser2, or parse5. It is commonly installed as a command-line tool or used as a library in scripts to automate document audits, accessibility checks, or debugging.

Typical workflows involve feeding an HTML or XML file to dominfo, either from disk or a stream, and inspecting the resulting report. Examples include: dominfo index.html; dominfo --depth 4 --format json index.html; or cat page.html | dominfo --stats.

Limitations include dependence on the underlying parser and the fact that the DOM state may differ from the authored source after scripting manipulations. Results should be interpreted as structural and content summaries rather than exhaustive validations. Dominfo complements browser developer tools and specialized validators.

See also: Document Object Model, HTML, XML, web debugging tools, jsdom, htmlparser2.