microformats2-parser: A Microformats 2 parser.

[ library, public-domain, web ] [ Propose Tags ]

A parser for Microformats 2 (http:/microformats.orgwiki/microformats2), a simple way to describe structured information in HTML.

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  • Data
    • Microformats2
      • Data.Microformats2.Jf2
      • Data.Microformats2.Parser
        • Data.Microformats2.Parser.Date
        • Data.Microformats2.Parser.HtmlUtil
        • Data.Microformats2.Parser.Property
        • Data.Microformats2.Parser.Util


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Versions [RSS] 0.1.0, 0.1.1, 1.0.0, 1.0.1,,,,,,,,,,,,
Dependencies aeson, aeson-pretty, aeson-qq, attoparsec, aws-lambda-haskell-runtime, aws-lambda-haskell-runtime-wai, base (>= && <5), base-compat (>=0.8.0), blaze-html, blaze-markup, bytestring, case-insensitive, containers, data-default, either, errors, githash, html-conduit, lens, lens-aeson, microformats2-parser, network, network-uri, options, pcre-heavy, safe, scotty, tagsoup, text, time, transformers, unordered-containers, vector, wai, wai-cli, wai-extra, xml-lens, xss-sanitize [details]
License LicenseRef-PublicDomain
Copyright 2015-2022 Val Packett <val@packett.cool>
Author Val Packett
Maintainer val@packett.cool
Category Web
Home page https://codeberg.org/valpackett/microformats2-parser
Bug tracker https://codeberg.org/valpackett/microformats2-parser/issues
Source repo head: git clone https://codeberg.org/valpackett/microformats2-parser.git
Uploaded by valpackett at 2022-10-18T00:51:14Z
Distributions NixOS:
Reverse Dependencies 1 direct, 1 indirect [details]
Executables microformats2-parser-lambda, microformats2-parser
Downloads 8360 total (50 in the last 30 days)
Rating 2.0 (votes: 1) [estimated by Bayesian average]
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Status Docs not available [build log]
All reported builds failed as of 2022-10-18 [all 2 reports]

Readme for microformats2-parser-

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Hackage unlicense


Microformats 2 parser for Haskell! #IndieWeb

  • parses items, rels, rel-urls
  • resolves relative URLs (with support for the <base> tag), including inside of html for e-* properties
  • parses the value-class-pattern, including date and time normalization
  • handles malformed HTML (the actual HTML parser is tagstream-conduit)
  • also can convert to JF2
  • high performance
  • extensively tested

Also check out http-link-header because you often need to read links from the Link header!



Look at the API docs on Hackage for more info, here's a quick overview:

{-# LANGUAGE OverloadedStrings #-}

import Data.Microformats2.Parser
import Data.Default
import Network.URI

parseMf2 def $ documentRoot $ parseLBS "<body><p class=h-entry><h1 class=p-name>Yay!</h1></p></body>"

parseMf2 (def { baseUri = parseURI "https://where.i.got/that/page/from/" }) $ documentRoot $ parseLBS "<body><base href=\"base/\"><link rel=micropub href='micropub'><p class=h-entry><h1 class=p-name>Yay!</h1></p></body>"

The def is the default configuration.

The configuration includes:

  • htmlMode, an HTML parsing mode (Unsafe | Escape | Sanitize)
  • baseUri, the Maybe URI that represents the address you retrieved the HTML from, used for resolving relative addresses -- you should set it

parseMf2 will return an Aeson Value structured like canonical microformats2 JSON. lens-aeson is a good way to navigate it.


Use stack to build.
Use ghci to run tests quickly with :test (see the .ghci file).

$ stack build

$ stack test

$ stack ghci


This is free and unencumbered software released into the public domain.
For more information, please refer to the UNLICENSE file or unlicense.org.