JustHTML – A pure Python HTML5 parser that just works
I got frustrated with HTML parsing in Python. I wanted a Python HTML parser that was both correct and easy to install. The C-based ones (lxml, selectolax) are fast but not HTML5 compliant. The pure Python ones (html.parser, BeautifulSoup's default) are easy to install but choke on real-world HTML. html5lib is 80% correct but painfully slow. So I wrote JustHTML. It's: • 100% HTML5 compliant – passes all 8,500+ html5lib tests. If a browser can parse it, JustHTML can. • Pure Python, zero dependencies – pip install and go. Works on PyPy, Pyodide, anywhere. • Fast enough – ~0.1s to parse…
What it does
In the maker’s words, at launch
I got frustrated with HTML parsing in Python. I wanted a Python HTML parser that was both correct and easy to install. The C-based ones (lxml, selectolax) are fast but not HTML5 compliant. The pure Python ones (html.parser, BeautifulSoup's default) are easy to install but choke on real-world HTML. html5lib is 80% correct but painfully slow. So I wrote JustHTML. It's: • 100% HTML5 compliant – passes all 8,500+ html5lib tests. If a browser can parse it, JustHTML can. • Pure Python, zero dependencies – pip install and go. Works on PyPy, Pyodide, anywhere. • Fast enough – ~0.1s to parse Wikipedia's homepage. Not C-fast, but 50% faster than html5lib. • Simple API – doc.query("div.foo > p") with CSS selectors. One method to learn. Example: from justhtml import JustHTML doc = JustHTML("<div><p class='intro'>Hello!</p></div>") print(doc.query(".intro")[0].to_html()) I've fuzz-tested it with 3 million malformed documents. Would love feedback, especially on the API design.
Does the same job
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eno [1] - A modern plaintext language w/ libraries [2] for JavaScript, Python, Ruby & soon more! We migrated a big relational research database to a file-based solution - requirements were: - Super fast and easy editability for users - Highest performance for parsing/validating >10K documents on every user change. Our trials with YAML/TOML showed us that we wanted something both faster [3][4] and easier [4], something tailored for file-based content management ... and after months of research & development it's now publicly available (under MIT license) for everyone! Last but…
- HHHtmlPy – HTML5-CSS3-JavaScript Based GUI Library in Python2015 · amol-mandhane.github.io · ▲79
- PAPup – A command-line HTML parser2014 · github.com · ▲126
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