SubExtract for AI Developers

Convert webpages, documentation sites, and YouTube transcripts into clean LLM-ready Markdown for RAG pipelines, fine-tuning datasets, and AI workflow context.

Workflows

Build a RAG corpus from a docs site

  1. Use Web Crawler with the docs site's root URL as the starting point
  2. Set crawl depth and page limit appropriately
  3. Get the bundled Markdown export — one file per URL
  4. Ingest into your vector store (Pinecone, Weaviate, pgvector, etc.) with the URL as the source metadata
Use the recommended tool

Convert a YouTube tutorial to LLM context

  1. Extract the YouTube video's transcript (no timestamps for cleanest LLM input)
  2. Save as a .txt or .md file
  3. Drop into your LLM tool (ChatGPT, Claude Projects, Perplexity Spaces) as context
  4. Now you can ask questions about the video without rewatching
Use the recommended tool

Extract a single article for a one-shot LLM prompt

  1. Paste any article URL into the Web Scraper
  2. Get clean Markdown output — no nav, no ads, no boilerplate
  3. Copy the output and paste into your LLM as context
  4. Ideal for summarization, fact-checking, or comparative analysis prompts
Use the recommended tool

Recommended tool combinations

LLM context preparation

Quick context gathering for one-shot LLM prompts — paste, scrape, drop into your prompt.

Real-world examples

Indexing a product's docs into a chatbot

Crawl the product's documentation site (typically 50-200 pages). Each page becomes a chunk in your vector store with the URL as source metadata. Now your chatbot can answer customer questions citing the exact docs page — clean Markdown means clean retrieval.

Researching for a long-form prompt

Need to write a thorough analysis prompt for Claude or GPT-4? Scrape 5 source articles into Markdown, concatenate, and paste as context. Token-efficient (no HTML overhead) and grounds the model in real source material.

Frequently asked questions

Related tools & guides

Firecrawl Alternative — SubExtract for No-Code Web Extraction

Compare SubExtract vs Firecrawl. Web UI for one-off jobs, no API key, plus video and social transcript extraction.

Jina Reader Alternative — SubExtract for No-Code Markdown Extraction

Compare SubExtract vs Jina Reader. Web UI for one-off jobs, plus video and social transcript extraction beyond URLs.

Web Scraper — URL to Markdown

Scrape any webpage to clean Markdown or text. Extract content from URLs in seconds.

Web Crawler — Crawl Website to Text

Crawl entire websites and extract all content as text or Markdown. Bulk URL extraction.