Evidence · first-party tested/Best AI Tools to Scrape Web Pages Into Clean Markdown or Structured Data
It 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.
What was measured
Proxy Evasion
How well the tool gets past anti-bot protections and modal or firewall barriers to reach the page content.
decisive for this rankingtransformation
Bypassing anti-bot and modal barriers is often required to reach the page content at all, so it directly affects scraping success. (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, 6 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.Output Quality◐ MixedThe extractor preserves the main recipe content accurately, including the ingredients block and directions layout, but the returned markdown is highly unrefined and bloated with boilerplate text.Output Quality◐ MixedThe extractor can cleanly capture static structural text and basic marketing attributes, but it misses vital dynamic transactional nodes on hydrated pages.Output Quality✗ FailedReturned zero job payload; the output text consisted entirely of multilingual CAPTCHA strings and security warnings.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
- e69ce784-8987-4af8-bba7-1a1e1fe4ee59
- 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 Proxy Evasion
Firecrawl✓ WorkedBypasses Glassdoor's Cloudflare-style perimeter defenses and recovers the target job listing content, including active software-engineering listings, corporate profile names, salary estimates, and technical-skill arrays.Jina AI Reader⚠ StruggledAlthough the anti-bot wall is bypassed, the recovered Glassdoor output is still a raw DOM dump with sign-in notices, framework noise, and header redirects interleaved, so the target listings require heavy downstream cleanup.Skyvern✓ WorkedThe tool can bypass a standard interstitial sign-in/modal barrier and still recover the target content, outputting structured job listings with deterministic fields such as title, company, location, and summary.
This evidence is published in
Real inputs and real outputs, no retouching · every cell queryable via API & MCP · aidemos.com