Evidence · first-party tested/Best AI Tools to Scrape Web Pages Into Clean Markdown or Structured Data
Returned zero job payload; the output text consisted entirely of multilingual CAPTCHA strings and security warnings.
What was measured
Output Quality
Conceptually matches the prompt and is visually usable.
decisive for this rankingtransformation
Whether the result matches the page and is actually usable is the main outcome the ranking is trying to measure. (3 of 3 judges)
What was given, what came back
Test input: Glassdoor software engineer jobs behind sign-in modal · mixed · group: web-scraping-benchmark
Input — what we sent
Input, verbatim
https://www.glassdoor.com/Job/software-engineer-jobs-SRCH_KO0,17.htm — Dismiss any immediate sign-in or signup modal overlays that block the view. Once cleared, extract the top 5 job listings, including job title, company name, location, and the short summary snippet.
A Glassdoor jobs listing page protected by Cloudflare and a sign-in/interstitial overlay, used to test proxy evasion, anti-bot handling, and the ability to dismiss blocking modal UI before extracting listings.
Output — unretouched
Spider Playground showing a Glassdoor access-block page
Also checked on this input — same tool, 5 other criteria
Noise Filtering✗ FailedThe scraper fails to strip static boilerplate from cluttered pages: the markdown included the global header navigation, social-sharing URLs, cookie-choice notices, and user reviews instead of isolating only the core recipe content.Proxy Evasion✗ FailedIt was stopped by the site's security interstitial and returned only anti-bot warning text instead of the target listings, showing no recovered job content.Proxy Evasion✗ FailedNative proxy handling fails against anti-bot protection, triggering a full 'Humans only' Cloudflare-style block page instead of the target listings.Schema Extraction Integrity✓ WorkedIt can preserve the main recipe content accurately, keeping the central ingredients block and recipe directions layout intact.Visual Spatial Awareness✗ FailedIts structural-cleanup is weak on cluttered static pages: it leaves global navigation links, social-sharing URLs, cookie notices, and user reviews in the markdown instead of isolating the core page content.
Provenance
- Observation
- ec071df3-73be-44eb-b169-0f8eb530baee
- 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: "spider",
scenario: "web-scraping-benchmark"
})MCP · mcp.aidemos.com/api/mcp
Free with attribution.
Same input, same check — 3 other tools
measured on Output Quality
Firecrawl◐ MixedExtracts the core job-listing content, but breaks the text structure with navigation buttons, search filter blocks, and internal page links.Jina AI Reader◐ MixedIts output quality is partial on the hydrated ecommerce page: it preserves the SEO header and static price markers, but replaces the transactional product data with a giant global link directory.Skyvern✓ WorkedProduces a clean markdown_content payload with readable headings and bold labels for the extracted job listings.
This evidence is published in
Real inputs and real outputs, no retouching · every cell queryable via API & MCP · aidemos.com