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API · /html-api

HTML API

healthy 4,423 Subscribers

A fast, fully-local HTML toolkit: extract structured data from supplied HTML (title, meta description, canonical link, language, Open Graph and Twitter card tags, links, images, headings and word counts), convert HTML to readable plain text, list all links resolved against a base URL, and sanitize HTML with a strict allowlist (scripts, iframes, inline event handlers, javascript: URLs and unknown tags are stripped). It works on the HTML you send and never fetches URLs (for live link previews see the oanor URL Tools API). Input via the query string or the request body, up to 2 MB. Pure server-side compute, no third-party upstream, so responses are instant and always available. Ideal for scrapers and data pipelines, comment and email sanitization, RAG and content extraction, and CMS tooling.

#html #parser #extract #sanitize #scraping #plain-text #dev-tools
api.oanor.com/html-api
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Machine-readable spec so AI agents can integrate this API.

/api/html-api/openapi.json
/api/html-api/llms.txt

Discovery: GET /api/index.json lists every API.

API health

healthy
Uptime
100.00%
Server probes · 24h
Avg latency
75 ms
Server probes · 24h
Subscribers
4,423
active
Total calls
32
last 7 days
status Full status page → · 32 probes/24h

Pricing

Pick a tier — billed monthly, cancel anytime.

Free

Free

  • 6,000 calls / month
  • 2 requests / second
  • Hard cap (429 above quota, no overage)
  • 6,000 calls/month, 2 req/s
  • All endpoints: extract, to-text, links, sanitize
  • No credit card
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Basic

€5.00 /month

  • 140,000 calls / month
  • 8 requests / second
  • Hard cap (429 above quota, no overage)
  • 140,000 calls/month, 8 req/s
  • Full extract/to-text/links/sanitize on up to 2 MB input
  • Commercial use allowed
  • Email support
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Pro

€17.00 /month

  • 900,000 calls / month
  • 25 requests / second
  • Hard cap (429 above quota, no overage)
  • 900,000 calls/month, 25 req/s
  • Allowlist HTML sanitization with security hardening
  • Priority email support
  • Commercial use allowed
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Mega

€48.00 /month

  • 5,000,000 calls / month
  • 80 requests / second
  • Hard cap (429 above quota, no overage)
  • 5,000,000 calls/month, 80 req/s
  • High-throughput batch parsing for scraper & RAG pipelines
  • Priority support
  • Full commercial license
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Built by

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PremiumApi

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Markdown API

A fast, fully-local Markdown toolkit: render GitHub-flavored Markdown to HTML that is sanitized by default (scripts, style/iframe tags, inline event handlers and javascript: URLs are stripped), strip Markdown down to clean plain text, and extract a heading table of contents with levels, text and URL slugs. Every endpoint accepts input via the query string or the request body (up to 1 MB). Pure server-side compute, no third-party upstream, so responses are instant and always available. Ideal for CMS and documentation tools, comment systems, static-site pipelines and content rendering.

api.oanor.com/markdown-api

Cron API

A fast, fully-local cron-expression toolkit (UTC): validate 5-field cron expressions with ranges, lists, steps, month and weekday names and the common @aliases (@yearly, @monthly, @weekly, @daily, @hourly); compute the next N run times for a schedule from now or any start date; and describe a schedule in plain English. Every endpoint accepts input via the query string or the request body. Pure server-side compute, no third-party upstream, so responses are instant and always available. Ideal for schedulers and job runners, devops and CI tooling, and dashboards that show the next run time of a task.

api.oanor.com/cron-api

XML API

A fast, fully-local XML toolkit: convert XML to JSON and JSON to XML with configurable attribute handling, validate XML well-formedness with line and column error details, and pretty-print XML while preserving element order. Every endpoint accepts input via the query string or the request body, up to 2 MB. Pure server-side compute, no third-party upstream, so responses are instant and always available. Ideal for system integrations, SOAP and legacy interop, RSS and sitemap processing, config tooling and data pipelines.

api.oanor.com/xml-api

JSONPath API

Query and extract from JSON with JSONPath, server-side. Run any JSONPath expression — wildcards, recursive descent, array slices and filter expressions like [?(@.price>10)] — against a JSON document and get back the matched values, the normalized paths and JSON Pointers of every match, or just the first match. Filter expressions are evaluated in a safe sandbox with no access to globals, and inputs can be sent as a JSON POST body or a query parameter. Pure local compute with no third-party upstream, so responses are instant and the service is always available. Ideal for no-code and automation platforms, ETL and data pipelines, API integrations, testing and config extraction.

api.oanor.com/jsonpath-api

Frequently asked questions

Quick answers about pricing, quotas, and integration.

How do I get an API key for HTML API?
Sign up for free at oanor.com, generate an API key from the developer dashboard, and call HTML API with the x-oanor-key header. No credit card needed for the free tier.
What's the rate limit for HTML API?
Free tier allows 1 request per second. Paid plans scale up to 50 requests per second on the Mega tier. Hard limits return HTTP 429 above the quota — no surprise overage charges.
How much does HTML API cost?
HTML API has a free tier with 100 calls / month. Paid plans start at €5.00 / month with higher quotas and faster rate limits.
Can I cancel my subscription anytime?
Yes. Plans are billed monthly and you can cancel anytime from your billing dashboard. No long-term contracts and no cancellation fee.
Is HTML API GDPR-compliant?
All requests to HTML API go through our EU-based gateway. Your upstream API key never leaves our server and no personal data is shared with the upstream provider beyond the request you send.

Pick an endpoint from the list on the left to see its details and try it.

Code snippets

Sign up to get an API key, then call any path under your slug.

curl https://api.oanor.com/html-api/SOME_PATH \
  -H "x-oanor-key: oanor_test_..."
const res = await fetch("https://api.oanor.com/html-api/SOME_PATH", {
  headers: { "x-oanor-key": "oanor_test_..." }
});
const data = await res.json();
$ch = curl_init("https://api.oanor.com/html-api/SOME_PATH");
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_HTTPHEADER, ["x-oanor-key: oanor_test_..."]);
$response = curl_exec($ch);
import requests
r = requests.get(
    "https://api.oanor.com/html-api/SOME_PATH",
    headers={"x-oanor-key": "oanor_test_..."},
)
print(r.json())

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