Web Crawling API That Turns Any Website Into Data

One API call — structured data from any URL. DocsFlow AI crawls static pages, JavaScript-rendered SPAs, and entire sitemaps, returning clean JSON ready for your pipelines. No proxies to manage. No browser clusters to maintain.

Crawl your first URL free View API docs
JS rendering included
Proxy rotation built-in
Sitemap & bulk crawl
SOC 2 · GDPR
techcrunch.com
https://techcrunch.com
Crawl Results

Everything the Crawling API Handles Out of the Box

Pick a capability — see exactly what it delivers.

Full-Page Extraction
HTML & Markdown
HTML outputMarkdown outputBoilerplate strippedMedia metadata

Retrieve the complete rendered HTML or a clean Markdown version of any URL. Headings, paragraphs, links, images, and tables all preserved. Boilerplate navigation, cookie banners, and ads stripped automatically before delivery.

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# Getting Started with APIs

APIs allow applications to communicate
with each other over HTTP...

## Authentication

Most APIs use Bearer tokens or
API keys for auth.

## Rate Limits

Default: 1000 req / min per key.

Every Team That Needs Web Data at Scale

From competitive intelligence to AI training data — web crawling powers the data pipelines behind modern product and research teams.

E-Commerce

Competitive Price Intelligence

Challenge: Manual competitor monitoring can't scale across thousands of SKUs.

Crawl competitor product pages on a schedule to extract prices, availability, and promotions automatically. Feed pricing engines and markdown alerts in real time.

product_titlecurrent_priceoriginal_pricestock_statusvariants
AI / ML

AI & LLM Training Data

Challenge: High-quality, domain-specific training data is slow to curate manually.

Crawl authoritative sources at scale, extract clean Markdown content, and pipe it into your pre-training or fine-tuning pipelines. Deduplicated, normalised, and ready for ingestion.

urltitleclean_textlanguageword_count
Media / PR

News & Media Monitoring

Challenge: Brand mentions appear across hundreds of publications in real time.

Crawl news sites, blogs, and forums continuously. Extract headline, author, publish date, and body text. Filter by keyword match and push alerts to Slack or your CRM.

headlineauthorpublished_atbody_textsource_domain
PropTech

Real Estate Data Aggregation

Challenge: Property listings update daily and are spread across dozens of portals.

Crawl listing pages to extract price, location, bedrooms, bathrooms, and agent contact. Consolidate into a single database for analytics and lead generation.

addresspricebedroomsbathroomsagent_name
Procurement

Catalogue & Inventory Sync

Challenge: Supplier websites update product specs and stock without notice.

Schedule crawls of supplier product pages to detect spec changes, new SKUs, and out-of-stock events. Keep your catalogue database automatically synchronised.

skuproduct_namedescriptionspecsavailability
Research

Academic & Research Harvesting

Challenge: Literature reviews require reading hundreds of abstract pages manually.

Crawl paper repositories, conference proceedings, and preprint servers. Extract title, abstract, authors, and DOI. Pipe into citation management or RAG systems.

titleauthorsabstractdoipublish_year
Legal

Regulatory & Compliance Monitoring

Challenge: Government portals update regulations without structured APIs.

Crawl public regulatory databases, amendment logs, and court record pages. Extract changes and trigger internal compliance workflows before deadlines.

regulation_ideffective_datechange_summaryjurisdictionurl
HR / Recruiting

Job Market Intelligence

Challenge: Talent demand signals are buried across dozens of job boards.

Crawl job listing sites to extract role title, required skills, salary band, and posting date. Build compensation benchmarks and talent pipeline dashboards.

job_titlecompanyskillssalary_rangeposted_at

One Endpoint. Any Language. Any Site.

POST a URL — get back structured JSON or clean Markdown with confidence scores and metadata for every field.

POST /v1/crawl — web crawling API
#fbbf24">curl -X POST https://api.docsflowai.com/v1/crawl \
  #a78bfa">-H "Authorization: Bearer YOUR_API_KEY" \
  #a78bfa">-H "Content-Type: application/json" \
  #a78bfa">-d '{
    "url": "#67e8f9">https://example.com/pricing",
    "render_js": true,
    "output_format": "json",
    "output_schema": {
      "page_title": "string",
      "plan_names": "array",
      "prices": "array",
      "features": "array"
    }
  }'
Get free API keyFull API reference →

Web Crawling API Deep Dive: JS Rendering, Bulk Crawls & LLM-Ready Data

A comprehensive guide to how the DocsFlow AI web crawling API works, what makes it production-ready, and how teams use it to power AI pipelines, price intelligence, and competitive research.

What is a web crawling API and when should you use one?

A web crawling API removes the infrastructure burden from data collection. Instead of maintaining a fleet of headless browsers, rotating proxy pools, and anti-detection fingerprinting logic, developers send a single HTTP request and receive structured page content in return. The right time to use a crawling API is when your team needs reliable, scalable web data without a dedicated scraping engineering effort. Common triggers include competitive intelligence requirements, AI training data pipelines, real-time price monitoring, and content aggregation products where the scraping layer should not be a core engineering concern.

How does DocsFlow AI handle JavaScript-heavy websites?

Modern web applications — React, Next.js, Vue, Angular — load content asynchronously after the initial HTML response. A plain HTTP fetcher will return an empty shell. DocsFlow AI runs a headless Chromium instance for every request with render_js: true, executes all client-side JavaScript, waits for network idle and DOM stability, then extracts the fully rendered page. Configurable wait conditions (networkidle2, domcontentloaded, custom CSS selectors becoming visible) ensure extraction fires at the right moment for sites that load content in stages.

What output formats does the web crawling API support?

DocsFlow AI returns crawled content in three output formats selectable per request. HTML mode returns the cleaned, fully-rendered HTML with boilerplate navigation and scripts stripped. Markdown mode converts the rendered page to structured Markdown — ideal for LLM ingestion, RAG pipelines, and documentation systems. JSON mode applies your output_schema to the page, extracting specific named fields with confidence scores — equivalent to a field-level data extraction API rather than a generic crawler.

How does bulk crawling and sitemap support work?

The /v1/crawl/bulk endpoint accepts up to 10,000 URLs per request. You can provide a sitemap URL directly — the API fetches, parses, and queues all pages automatically. Results are delivered via webhook as each page completes rather than waiting for the full batch, so your pipeline starts processing data immediately. Configurable concurrency limits allow you to balance extraction speed against target server politeness.

FAQ

Web Crawling API — Common Questions

Everything engineering teams ask before integrating the web crawling API into production pipelines.

What is a web crawling API?
A web crawling API accepts URLs over HTTP and returns page content — HTML, Markdown, or structured JSON — without requiring the caller to manage browser infrastructure, proxy pools, or anti-bot logic. DocsFlow AI handles all of that server-side.
Does the web crawling API support JavaScript-rendered pages?
Yes. Set render_js: true and DocsFlow AI runs headless Chromium, executes client-side JavaScript, and waits for DOM stability before extracting content. React, Next.js, Vue, and Angular SPAs are fully supported.
How does bulk crawling work?
POST to /v1/crawl/bulk with up to 10,000 URLs — or a sitemap URL. Results are pushed to your webhook endpoint as each page completes. Configurable concurrency lets you balance speed against target-server politeness.
Do I need to manage proxies?
No. DocsFlow AI manages a residential and datacenter proxy pool across 150+ countries with automatic rotation. No proxy procurement, configuration, or rotation logic is required on your end.
What output formats does the web crawling API return?
HTML (cleaned rendered HTML), Markdown (structured, LLM-ready), and JSON (fields extracted per your output_schema). Set output_format in the request body to choose.
Is the web crawling API suitable for AI training data collection?
Yes. Markdown output is clean, boilerplate-free, and semantically structured — ready for pre-training, fine-tuning datasets, and RAG vector databases without additional preprocessing.
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