Evidence · first-party tested/Best AI Tools to Scrape Web Pages Into Clean Markdown or Structured Data
It failed to get past the anti-bot barrier; the 3.6 s response is the "Humans only" block page instead of the target job listings.
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
Jina Reader blocked by Glassdoor’s anti-bot notice
Also checked on this input — same tool, 11 other criteria
Interaction Stability✓ WorkedCan process a protected page through edge security without being dropped, successfully bypassing the firewall and recovering plain-text markers from the page flow.JS DOM Hydration✗ FailedIt fails to wait for client-side hydration on a dynamic product page: the size selector grid comes back as empty layout nodes while the extractor instead pulls the site's international menu and regional index.Noise Filtering◐ MixedIt can recover the page text layer, but the extraction still leaves job data interleaved with French and German translation strings and header redirect text, so heavy post-processing cleanup is still required.Output Quality◐ 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.Output Quality✗ FailedWhen blocked, it emits an anti-bot 'Humans only' text wall in multiple languages rather than job listings, so the returned text is not usable as a listing extract.Output Quality✗ FailedWhen this run collapses, the extractor returns only a standard HTTP 404 text string wrapped inside a global website layout frame, leaving the primary output unusable for data compilation.Schema Extraction Integrity✗ FailedCan break entirely when URL handling loops or duplicates the target path: the report says the primary output became completely useless for data compilation after an address-resolution bug.Visual Spatial Awareness⚠ StruggledProduces poor structural filtering on guarded pages: the recovered job text is heavily interleaved with framework noise, sign-in alerts, and header redirects, requiring substantial post-processing to clean.Visual Spatial Awareness✓ WorkedCan isolate basic boilerplate elements from a broken page render: it still extracted header navigation and privacy-disclosure text into markdown even when the target resolved into a 404 layout.Visual Spatial Awareness✗ FailedIt fails to isolate the content region and instead emits the sign-in overlay text in at least 5 languages (English, French, German, Dutch, Spanish).Visual Spatial Awareness✗ FailedFails to structurally filter interstitial noise, leaving raw framework and security-page text instead of isolating meaningful job content.
Provenance
- Observation
- a4d67da1-472a-4def-8bba-880a1779ac0f
- 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",
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◐ MixedReturns the protected job page in a noisy flattened form, interleaving the target content with navigation buttons, search filter blocks, and internal page links instead of a cleanly isolated listing block.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.Spider✗ 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.
This evidence is published in
Real inputs and real outputs, no retouching · every cell queryable via API & MCP · aidemos.com