HTML to Markdownfor AI

Convert HTML files to clean GitHub-Flavored Markdown optimized for AI and LLM workflows — entirely in your browser.

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Popular Use Cases

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📚 Documentation → LLM

Feed product docs into ChatGPT or Claude

🕸️ Web Scraping → Markdown

Clean up crawler output for RAG pipelines

🗂️ Knowledge Base Export

Confluence, Notion, SharePoint → Markdown

🧠 AI Training Data

Strip boilerplate for fine-tuning datasets

How to download HTML pages and create a ZIP package

Have a documentation site you want to feed to an LLM? Mirror it withwget, zip the result, and convert the whole set in one pass.

1. Mirror the pages with wget

Downloads a documentation section recursively, staying inside the starting path and rewriting links so the copies work offline.

wget -r -np -k -E \
  --reject-regex '\.(png|jpe?g|gif|svg|webp|woff2?|ttf|css|js|zip|pdf)$' \
  -w 0.5 --random-wait \
  https://community.denodo.com/docs/html/browse/latest/en/vdp/developer/index

wget writes into a folder named after the host, e.g. community.denodo.com/. On macOS install it first with brew install wget.

2. Pack the HTML files into a ZIP

Bundle only the .html files. Nested folders are fine — the converter reads them at any depth and mirrors the paths in the output.

cd community.denodo.com

# every .html file, directory structure preserved
find . -name '*.html' -print | zip ../docs-html.zip -@

Prefer everything as-is? zip -r ../docs-html.zip . works too; non-HTML entries are ignored on upload.

3. Drop the ZIP above

Upload docs-html.zip into the converter. Each page becomes a .md file with the same name and path, ready to download as a single archive.

# check the archive stays inside the limits first
unzip -l docs-html.zip | grep -c '\.html$'   # ≤ 200 files
du -h docs-html.zip                          # ≤ 100 MB

What the wget flags do

-r: Follow links recursively
-np: Never ascend above the starting path
-k: Rewrite links to point at the local copies
-E: Append .html so every page is detected
-p: Optional: also grab CSS and images — not needed for Markdown
-l 2: Limit crawl depth — useful for large sites
-w 0.5 --random-wait: Throttle requests to stay polite

On Windows

Install wget with winget install JernejSimoncic.wget, then zip with PowerShell instead of the zip command.

Compress-Archive -Path .\community.denodo.com\* -DestinationPath docs-html.zip

Only crawl sites whose terms permit it, and keep the request rate low. Large manuals may exceed the 200-file limit per archive — narrow the starting URL or lower-l and convert in batches.

Read the full guide →— covers curl, browser saving, Puppeteer, HTTrack, and more