Parsers and serialisers

12-month change compares the average of the last 4 weeks of downloads with the first 4 weeks of the 52-week series. Gzip size is for the whole package, as measured by Bundlephobia. "-" means the value has not been fetched.

• @onlineapps/cookbook-coreCore cookbook parsing and validation - lightweight foundation for workflow definitions
• @crewx/knowledge-coreShared knowledge core - parser, search (BM25), graph builder for CrewX
• multi-iniAn ini-file parser which supports multi line, multiple levels and arrays to get a maximum of compatibility with Zend config files.
• json-schema-doc-tsGenerate documentation for JSON Schemas
• helper-yamlTemplate helper for parsing YAML from a string.
• html-tokenizerSmall, fast, event-driven, fault-tolerant html tokenizer. Works in node or browsers.
• @rjsf/semantic-uiSemantic UI theme, fields and widgets for react-jsonschema-form
• @rigelbuild/solid-markdownMarkdown renderer for solid-js
• jsreport-exceljsExcel Workbook Manager - Read and Write xlsx and csv Files.
• @takazudo/mdx-formatterAST-based markdown and MDX formatter with Japanese text support
• @jsonjoy.com/uiReact design system, components, and utilities
• yaml-env-defaultsRead yaml file with environment variables substitution
• phoneparserA parser for phone numbers.
• ogc-schemasJsonix XML-JSON mappings for OGC Schemas.
• @studio/logA tiny streaming ndJSON logger
• sack.vfsSACK abstraction library exposed to JS to provide low level system services.
• @skgdev/socket.io-msgpack-javascriptsocket.io parser based on msgpack
• video-name-parserParse names of video files to identify quality (e.g. 1080p), season/episode, year, etc.
• pdf-parserConvert PDF content and layout information with pdf.js
• microlink.ioThe Microlink API organized into products, each returning a direct result
• ngx-showdownA Angular (>=2) integration for Showdown
• @microlink/mcpMCP server for Microlink API
• jsdoc3-parserGet the AST of a file using JSDoc3's parser
• csv-arrayIntelligent CSV parser created and made for nodeJS. Which takes a csv file and produce an array from it.
• remark-extract-tocremark plugin to store table of contents
• vitepress-codeblock-collapseAuto-collapse long code blocks in VitePress with expand/collapse toggle
• survey-vue-uisurvey.js is a JavaScript Survey Library. It is a modern way to add a survey to your website. It uses JSON for survey metadata and results.
• couchdb-log-parseA program for parsing CouchDB logs
• docdownA simple JSDoc to Markdown documentation generator.
• openskpOpen-source SketchUp (.skp) binary file parser, writer, and converter — extract geometry, metadata, layers, and materials; create and edit .skp files; convert to GLB, OBJ, STL, PLY, DXF, and IFC4. Works in browser and Node.js.
• query-parser-expressConvert query strings to numbers and boolean for express/connect applications.
• nodejs-license-fileA lightweight License file generator and parser for NodeJS.
• @datawrapper/snarkdownTransform Markdown into HTML.
• remark-flowRemark plugins for custom button and variable syntax transformation
• sparserA simple parse format for everything.
• whatsapp-chat-parserA package to parse WhatsApp chats with Node.js or in the browser 💬
• json-storage-formatterPackage for json stringify objects without losing data types
• showdown-katexshowdown extension that adds latex and asciimath support
• xml-xsd-engineZero-dependency XML parser, XSD parser, schema model and validation engine written in TypeScript
• remark-gh-alertsA remark plugin to support GitHub-style alerts with pure CSS styling.
• quran-qcf4Developer-friendly Quran database using QCF v4 (King Fahd Complex Font) with Hafs recitation — includes fonts, page JSON, verse index, and font map.
• ini-parserA better .ini files parser
• remark-custom-containerremark parser plugin for custom directive in markdown
• toml-loaderTOML loader for webpack
• @m2d/react-markdownA modern, SSR-friendly React Markdown renderer that preserves the MDAST tree for reuse (e.g., mdast2docx), supports full JSX children, unified plugins, and component overrides.
• remark-html-directives```js npm i -D remark-directive remark-html-directives ```
• @eksml/xmlFast, lightweight XML/HTML parser, serializer, and streaming toolkit
• doculaBeautiful Website for Your Projects
• stated-jsJSONata embedded in JSON
• tag-soupThe fastest pure JS SAX/DOM XML/HTML parser.

• htmlparser2 vs cssom
• css-tree vs lightningcss
• esprima vs meriyah
• markdown-it vs markdown-exit
• turndown vs showdown
• @mdxeditor/editor vs @uiw/react-md-editor
• markdownlint-cli2 vs markdownlint-cli
• @mdx-js/react vs @mdxeditor/editor
• @uiw/react-md-editor vs markdown-exit
• @uiw/react-md-editor vs easymde
• @mdxeditor/editor vs easymde
• react-markdown vs @mdx-js/react
• @mdx-js/react vs markdown-to-jsx
• defuddle vs md-to-pdf
• pino vs roarr
• cheerio vs html-react-parser
• htmlparser2 vs html-react-parser
• react-markdown vs markdown-to-jsx
• @mdxeditor/editor vs react-native-enriched-markdown
• @microsoft/tsdoc vs jsdoc-to-markdown
• markdown-exit vs snarkdown
• doctoc vs jsdoc-to-markdown
• react-markdown vs @mdxeditor/editor
• snarkdown vs @tryfabric/martian
• turndown vs snarkdown
• conf vs convict
• markdown-it vs turndown
• xlsx vs fast-formula-parser
• json-schema-to-ts vs prisma-json-types-generator
• @microsoft/tsdoc vs vue-docgen-api