#content

Read and write the front-matter metadata block at the top of Markdown and content files — the --- ... --- header used by Jekyll, Hugo, Astro, Eleventy, Gatsby, Next.js MDX and Obsidian. The parse endpoint splits a document into its structured front-matter data (title, tags, date, draft flags and anything else, as proper JSON), the body content and an optional excerpt, and tells you whether front matter was present. The stringify endpoint does the reverse: give it a JSON object of fields and a body, and it returns a clean Markdown file with a YAML front-matter block. Front matter is read as YAML (which also accepts JSON). Perfect for static-site build steps, headless-CMS imports, content migrations and validating posts. Pure local computation — no key, no third-party service, instant; send large documents via POST. Live, nothing stored. 3 endpoints. Distinct from Markdown rendering / table-of-contents extraction and from YAML/TOML format conversion.

api.oanor.com/frontmatter-api

Make untrusted HTML safe to display. Send any HTML — a comment, a rich-text submission, a snippet from an email or a scraped page — and get back a clean, XSS-free version: <script> tags, inline event handlers (onclick, onerror), javascript: URLs, <iframe>, <style> and anything not on the allowlist are removed. Override the allowed tags and attributes to fit your needs, or drop links entirely. A strip endpoint returns plain text with all markup removed. Pure local sanitization — no key, no third-party service, instant. Live. 3 endpoints. Built for user-generated content, comment systems, rich-text editors, email rendering and any place untrusted HTML reaches a browser. Distinct from a Markdown renderer or an HTML data extractor.

api.oanor.com/htmlsanitize-api

Convert HTML into clean GitHub-Flavored Markdown. Pass an HTML string, or a live page URL to fetch and convert, and get back tidy Markdown — headings, bold/italic, links, images, lists, blockquotes, code blocks, plus GFM tables, strikethrough and task lists. Script, style and head elements are stripped automatically. Tune the output: ATX or setext headings, the bullet marker, fenced or indented code blocks, inline or referenced links, and the emphasis/strong delimiters; toggle GFM on or off. The inverse of a Markdown-to-HTML renderer. Pure local conversion (the optional URL fetch aside) — no key, no third-party service, instant. Live. 3 endpoints. Built for content migration, web clipping and "save as Markdown", scraping cleanup, CMS import and documentation pipelines.

api.oanor.com/htmltomarkdown-api

Read Medium posts in real time — no login or key needed. Pull the recent stories of any Medium user (@handle), any topic/tag, or any publication, straight from Medium's own public RSS feeds. Each post comes with its title, author, canonical link, publish date, categories/tags, a clean text excerpt and the full content HTML. Pass user = the @handle, tag = a topic slug, or publication = a publication slug; every call is live (no cache). 4 endpoints. Built for content aggregation, author/topic monitoring and reading-list back-ends. A Medium reader API. No upstream key, no cache.

api.oanor.com/medium-api

Read any public Tumblr blog in real time — no login or key needed. Fetch a blog's info (title, description, total post count), its posts with paging and an optional post-type filter (text, photo, quote, link, chat, audio, video, answer), posts filtered by a tag, and a single post by id. Each post comes in the upstream Tumblr shape with its type-specific fields (photo URLs, video embeds, quote text, etc.), tags and timestamps. Pass blog = the blog name (its subdomain); every call is live (no cache). 5 endpoints. Built for blog content aggregation, social listening and feed back-ends. A Tumblr blog-reading API. No upstream key, no cache.

api.oanor.com/tumblr-api

Score how easy a piece of text is to read using the standard, peer-reviewed readability formulas — Flesch Reading Ease, Flesch-Kincaid Grade, Gunning Fog, SMOG, Coleman-Liau and the Automated Readability Index. Pass text and get all six scores back together with the underlying counts (words, sentences, syllables, complex and polysyllabic words, letters and characters), an averaged grade level, an estimated reading time and a plain-English interpretation of the reading ease. A second endpoint counts syllables for a word or for every word in a phrase. Supply text inline via ?text=, as a query parameter or in a request body; everything is computed locally with no network calls, so it is fast and deterministic. Built for content and copywriting tools, SEO and editorial workflows, education and accessibility (plain-language) checks, and UX-writing review. A readability scorer — distinct from sentiment/NLP analysis (nlp), spelling and grammar checking (grammar), the case and text utilities (text) and string similarity (similarity). No upstream key, no cache.

api.oanor.com/readability-api

The DEV Community (dev.to) as an API, powered by the official open-source Forem platform API. DEV is one of the largest communities of software developers writing and sharing articles, tutorials and discussions. This API gives clean, read-only access to that content. /v1/articles browses and filters published articles — by tag (tag=javascript), by author (username=ben), by most-reacted over a period (top=7 for the best of the last week), or by feed state (fresh, rising) — with pagination; each result carries the title, description, canonical URL, tag list, positive-reaction and comment counts, estimated reading time, cover image and author summary. /v1/article?id=5 returns a single article with its complete Markdown body, canonical URL and author social links — everything needed to render or syndicate the full post. /v1/user?username=ben returns a member's public profile: display name, bio/summary, location, join date, linked Twitter/GitHub/website and avatar. /v1/tags lists the platform's popular tags for discovery. Article ids are numeric and stable, so links don't rot. Ideal for developer-content aggregators and newsletters, reading-list and bookmarking apps, community dashboards, "trending in tech" widgets and Discord/Slack bots. Data from the public DEV Forem API, free to use. Content is authored by the DEV community.

api.oanor.com/devto-api

Turn any web page into clean, readable article text and turn any RSS or Atom feed into a structured, full-text feed. Extract the main article from a URL (title, author, published date, source, lead image, reading time, word count, plain text and cleaned HTML) using readability extraction, parse a feed into its entries, and — the signature feature — produce a full-text feed where every entry carries the complete extracted article instead of just the summary. Only public http/https URLs are accepted and private or internal hosts are blocked. Every endpoint accepts input via the query string or the request body and returns lean JSON. Ideal for read-it-later apps and newsreaders, newsletters and digests, summarisers and RAG pipelines, content monitoring and archiving.

api.oanor.com/fulltextrss-api