Evidence · first-party tested/Best AI Tools to Scrape Web Pages Into Clean Markdown or Structured Data
When 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.
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
Jina Reader blocked by Glassdoor’s anti-bot notice
Also checked on this input — same tool, 12 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.Proxy Evasion⚠ 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.Proxy Evasion✓ WorkedThe tool can bypass standard edge security filters on the Glassdoor target and is not dropped by the firewall checks in this run sequence.Proxy Evasion✓ WorkedThe backend can bypass a standard Glassdoor "Humans only" interstitial and return page text in about 3.6 seconds, indicating that basic anti-bot and proxy barriers were cleared in this run.Proxy Evasion✗ FailedIt 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.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✗ 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.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.
Provenance
- Observation
- 8bb24646-3803-4641-86bc-6cad9801e3e7
- 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 Output Quality
Firecrawl✓ WorkedPreserves Markdown structure and core content cleanly, including headings, the ingredients table, and the step-by-step workflow, with excellent textual fidelity.Skyvern✓ WorkedProduces a highly accurate structured schema for dynamic page data, with the extracted sizes captured cleanly.Spider◐ 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.
This evidence is published in
Real inputs and real outputs, no retouching · every cell queryable via API & MCP · aidemos.com