Highlight terms in text
API · /highlight-api
Highlight API
healthy
3,674 Subscribers
Highlight search terms in text. The highlight endpoint wraps every match of one or more terms in a marker — defaulting to <mark>…</mark>, or any open/close strings you choose (** for Markdown, ANSI codes for the terminal, a CSS span, anything) — and returns the marked-up text and a match count. The snippets endpoint returns short excerpts of the surrounding context around each match, the way a search-results page shows where your query appears. Matching is case-insensitive by default with optional whole-word mode, and terms are matched literally (regex characters are safely escaped). Perfect for search results and in-page find, keyword spotting, log review and document previews. Pure local computation — no key, no third-party service, instant. Live, nothing stored. 3 endpoints. Distinct from search, summarization and diff APIs.
api.oanor.com/highlight-api
API health
healthy- Uptime
- 100.00%
- Server probes · 24h
- Avg latency
- 83 ms
- Server probes · 24h
- Subscribers
- 3,674
- active
- Total calls
- 57
- last 7 days
Pricing
Pick a tier — billed monthly, cancel anytime.
Free
Free
- 1,215 calls / month
- 2 requests / second
- Hard cap (429 above quota, no overage)
- 1,215 calls/month
- 2 req/sec
- Highlight + snippets
- No credit card
Starter
€2.55 /month
- 10,550 calls / month
- 8 requests / second
- Hard cap (429 above quota, no overage)
- 10.55k calls/month
- 8 req/sec
- Custom markers, whole-word
- Email support
Pro
€22.45 /month
- 156,500 calls / month
- 20 requests / second
- Hard cap (429 above quota, no overage)
- 156.5k calls/month
- 20 req/sec
- Search / preview pipelines
- Priority support
Mega
€60.45 /month
- 825,000 calls / month
- 50 requests / second
- Hard cap (429 above quota, no overage)
- 825k calls/month
- 50 req/sec
- Platform scale
- Dedicated SLA
Built by
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The live Baidu trending boards (百度热搜), read keyless from Baidu's public "top" board endpoint. Baidu is China's dominant search engine, and its hot-search board is the country's most-watched read on what people are searching for right now — the Chinese equivalent of Google Trends' real-time list, the pulse of the Chinese internet. The realtime endpoint returns the main national hot-search board ranked by heat: each entry with its rank, the trending word, Baidu's heat score (its own searches-driven ranking metric), whether it is rising, falling or steady, an editorial tag and a one-line description. The category endpoint returns one of Baidu's themed boards — film, TV drama, novels, games, cars or finance — the same way. This is the Baidu trending cut — distinct from the Western trends feeds (Google, Wikipedia, Reddit) and from the platform feeds in the catalogue: it is what China is searching for. Heat scores are Baidu's own ranking metric, not a raw search count; words and descriptions are in Chinese as Baidu publishes them. Counts are the real, live numbers Baidu shows; a short cache fronts the upstream. Keyless.
api.oanor.com/baiduhot-api
Reddit API
Real-time Reddit data as an API — subreddits, posts, comments, user profiles and search, returned as clean JSON. Pull a subreddit's info and its hot, new, top or rising posts; fetch a post together with its full comment tree; look up any user's profile, karma, submissions and comments; search posts across all of Reddit or within one subreddit; and list the trending posts and the most popular subreddits. Live data, paginated with Reddit cursors, with scores, upvote ratios, comment counts, flair, timestamps, thumbnails and media URLs. Ideal for social listening and brand monitoring, trend and sentiment dashboards, content aggregation, research and market intelligence, and bots. 11 data endpoints. Authenticated with an x-oanor-key; fair-use rate limits per plan.
api.oanor.com/reddit-api
Stemmer API
Reduce words to their linguistic root (stem) with the classic Snowball stemming algorithms — running → run, fishing → fish, nationalization → nation — across 24 languages including English, German, French, Spanish, Italian, Portuguese, Dutch, Russian, Arabic, Finnish, Swedish and more. Stem a whole text (every word, returning both the per-word mapping and the fully stemmed text) or a single word. Stemming is the core normalisation step behind search engines, query expansion, text indexing, keyword matching and NLP preprocessing. Pure local computation — no key, no third-party service, instant. Live, nothing stored. 4 endpoints. Distinct from sentiment/NLP analysis and fuzzy string matching.
api.oanor.com/stemmer-api
Internet Archive API
The Internet Archive as an API — the non-profit digital library of over 40 million freely accessible items: books and texts, audio and live-music concerts, films and video, software, images and archived web pages. Search the entire archive by keyword with full Lucene field syntax (by creator, title, subject, collection and more), filter by media type (texts, audio, movies, image, software, web, live concerts) and sort by downloads, date or trending popularity, getting each item's identifier, title, creator, media type, year, download count and collections; read an item's full metadata including its description, creators, subjects, language, collections, publisher, license, dates and total size; list an item's downloadable files with their format, size, length and a direct download URL; and look up the closest Wayback Machine snapshot of any web page — the archived flag, the snapshot date and HTTP status, and the web.archive.org link, optionally near a target timestamp. Ideal for research, digital preservation, media discovery, dataset building, link-rot recovery and apps that surface public-domain and openly-licensed culture. Data from the Internet Archive (archive.org).
api.oanor.com/archive-api
Frequently asked questions
Quick answers about pricing, quotas, and integration.
How do I get an API key for Highlight API?
Sign up for free at oanor.com, generate an API key from the developer dashboard, and call Highlight API with the x-oanor-key header. No credit card needed for the free tier.
What's the rate limit for Highlight 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 Highlight API cost?
Highlight API has a free tier with 100 calls / month. Paid plans start at €2.55 / 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 Highlight API GDPR-compliant?
All requests to Highlight 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/highlight-api/SOME_PATH \
-H "x-oanor-key: oanor_test_..."const res = await fetch("https://api.oanor.com/highlight-api/SOME_PATH", {
headers: { "x-oanor-key": "oanor_test_..." }
});
const data = await res.json();$ch = curl_init("https://api.oanor.com/highlight-api/SOME_PATH");
curl_setopt($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/highlight-api/SOME_PATH",
headers={"x-oanor-key": "oanor_test_..."},
)
print(r.json())Ratings
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