Evidence · first-party tested/Best AI Tools to Scrape Web Pages Into Clean Markdown or Structured Data
It did not capture the client-rendered size selector; after 7.0 s the extract still lacked the live size grid and showed only static page content.
What was measured
JS DOM Hydration
How well the tool waits for and captures content rendered by client-side JavaScript on dynamic pages.
decisive for this rankingtransformation
Capturing JavaScript-rendered content is a core scraping capability for modern web pages. (3 of 3 judges)
What was given, what came back
Test input: Nike Air Force 1 '07 size options extraction · mixed
Input — what we sent
Input, verbatim
https://www.nike.com/t/air-force-1-07-mens-shoes-jBrhbr/CW2288-111 — Wait for the size selection options to fully render. Extract the product name, price, and a list of all available shoe sizes.
A Nike product page with client-side JavaScript hydration used to test whether a headless scraper waits for dynamic DOM content before extracting product details and all available shoe sizes.
Output — unretouched
Jina Reader extracting a Nike product page
Also checked on this input — same tool, 3 other criteria
Interaction Stability✗ FailedIt did not wait for the client-side size selector to hydrate; the response shows the product title and $115 price but no concrete size inventory values.Output Quality◐ MixedIt recovered the product title and the $115 price, but the result was padded with image/link markup and navigation artifacts rather than a clean product-only extract.Schema Extraction Integrity◐ MixedCan still extract some static fields correctly on a dynamic product page, including the SEO header and price markers, but it corrupts the requested product-specific output by substituting broad site-directory text for the size data.
Provenance
- Observation
- d6a37898-46aa-424c-8ed2-cacb300ba94b
- Evidence run
- 06e1dbd6-5518-4af8-aa1a-735259a75b4f
- Study
- Scrape Web Pages Into Clean Markdown or Structured Data Using AI
- Research task
- 86b9jm3a3
- Tested at
- Jun 23, 2026
- Source
- first-party
- Evidence state
- verified
- Proof shown
- input + output shown
- Cost / latency
- not captured
- Repeat run
- not captured
- Tester
- not captured
The last three rows are honest blanks, not placeholders — our capture has no field for them yet.
Query this
get_evidence({
tool: "jina-ai-reader"
})MCP · mcp.aidemos.com/api/mcp
Free with attribution.
Same input, same check — 3 other tools
measured on JS DOM Hydration
Firecrawl◐ MixedCaptures hydrated product content but leaves substantial non-content noise in the output, including raw backend code artifacts and raw media-attachment matrices.Skyvern✓ WorkedWaits for the client-rendered product page to hydrate and extracts the size grid instead of stopping at the initial shell.Spider✓ WorkedIt captured the rendered product headline and basic metadata, including the Nike Air Force 1 '07 title, the Men's Shoes label, and the $115 price.
This evidence is published in
Real inputs and real outputs, no retouching · every cell queryable via API & MCP · aidemos.com