SEMANTIC HTML · ARCHIVED RESULTS

Semantic HTML.
Compare what tools preserve.

The same text. One markup change.
Two outputs to inspect, with evidence.

Explore an archived run from 20 September 2026, re-evaluated on 21 September. No extraction runs during your visit.

EXPLORE THE CONTROLLED CORPUS

Heading

readability-lxml 0.8.4.1 · Extractor / reading tool · English document

All 42 comparisons

The check distinguishes heading text, markup and level. It does not evaluate whether content belongs to a section. Test scope.

A

VARIANT A

An h2 heading

Output produced

Heading text : Present. Source

01 · The HTML change

<h2 class="case-marker">Measurement conditions</h2>

Exact input excerpt · Original HTML ↓

02 · What the tool produces HTML

…
<h2 class="case-marker">Measurement conditions</h2><p>Sensor A operated for 30 minutes. The measurement was repeated in the same environment, without remote resources or executed scripts.</p><p>The conclusion must be read with its unit, period, scope and caveat. Finding a word in an output is not enough to prove that the relationship was preserved.</p></article></main></body></div>

Excerpt identified by the corrected evaluator. Full output below.

03 · The documented observation

Heading text
Present
Heading markup
Explicit relationship
Heading level
h2
Section membership
Not evaluated

Verdict source: results.json · heading-en-1 / readability_lxml

Inspect the full evidence

The verdicts above come from corrected results.json. The raw file’s evaluation fields are historical and are not authoritative here.

results.json/cases/6/evaluation/relation/readability_lxml

Corrected verdict, unchanged
{
  "status": "ok",
  "tool_class": "content_extractor",
  "format": "html",
  "heading_relation": "explicit",
  "heading_level": "h2",
  "evidence": {
    "excerpt": "<h2 class=\"case-marker\">Measurement conditions</h2>"
  },
  "output_field": "additional_extractors.readability_lxml.html",
  "output_sha256": "4d15bf98d00e82c34584f16076ac99c711e0e693b715b4a87dd3322f1fbce742"
}
Complete studied output field

additional_extractors.readability_lxml.html

<div><body id="readabilityBody"><main><article><h1>Offline protocol for preserving relationships</h1><p>This synthetic document compares two markups while text, order, classes and surroundings remain identical. The data are fictional and describe neither Edikka nor a client.</p><h2 class="case-marker">Measurement conditions</h2><p>Sensor A operated for 30 minutes. The measurement was repeated in the same environment, without remote resources or executed scripts.</p><p>The conclusion must be read with its unit, period, scope and caveat. Finding a word in an output is not enough to prove that the relationship was preserved.</p></article></main></body></div>
Archived version and options

readability-lxml 0.8.4.1 · Execution 2026-09-20

{
  "version": "0.8.4.1",
  "configuration": "No configuration field in this output; consult the archived runner."
}

Archived runner · Python options

SHA-256 hashes
HTML input
e4c8dd8b2ea87f113776cfe6a51420c484a24c97750639347c1ddec38b1445c1
Evaluated output field
4d15bf98d00e82c34584f16076ac99c711e0e693b715b4a87dd3322f1fbce742

Complete raw output file ↗

B

VARIANT B

A div block

Output produced

Heading text : Present. Source

01 · The HTML change

<div class="case-marker">Measurement conditions</div>

Exact input excerpt · Original HTML ↓

02 · What the tool produces HTML

…
<p class="case-marker">Measurement conditions</p><p>Sensor A operated for 30 minutes. The measurement was repeated in the same environment, without remote resources or executed scripts.</p><p>The conclusion must be read with its unit, period, scope and caveat. Finding a word in an output is not enough to prove that the relationship was preserved.</p></article></main></body></div>

Excerpt identified by the corrected evaluator. Full output below.

03 · The documented observation

Heading text
Present
Heading markup
Text only
Heading level
No level detected
Section membership
Not evaluated

Verdict source: results.json · heading-en-2 / readability_lxml

Inspect the full evidence

The verdicts above come from corrected results.json. The raw file’s evaluation fields are historical and are not authoritative here.

results.json/cases/7/evaluation/relation/readability_lxml

Corrected verdict, unchanged
{
  "status": "ok",
  "tool_class": "content_extractor",
  "format": "html",
  "heading_relation": "text_only",
  "heading_level": null,
  "evidence": {
    "excerpt": "Measurement conditions"
  },
  "output_field": "additional_extractors.readability_lxml.html",
  "output_sha256": "a1515c1e04b64d00c3ce5a312047154ded3e4d9f060ddd2da5c5c30b75d05608"
}
Complete studied output field

additional_extractors.readability_lxml.html

<div><body id="readabilityBody"><main><article><h1>Offline protocol for preserving relationships</h1><p>This synthetic document compares two markups while text, order, classes and surroundings remain identical. The data are fictional and describe neither Edikka nor a client.</p><p class="case-marker">Measurement conditions</p><p>Sensor A operated for 30 minutes. The measurement was repeated in the same environment, without remote resources or executed scripts.</p><p>The conclusion must be read with its unit, period, scope and caveat. Finding a word in an output is not enough to prove that the relationship was preserved.</p></article></main></body></div>
Archived version and options

readability-lxml 0.8.4.1 · Execution 2026-09-20

{
  "version": "0.8.4.1",
  "configuration": "No configuration field in this output; consult the archived runner."
}

Archived runner · Python options

SHA-256 hashes
HTML input
4173dad4d266784865a6ed57bddde0f63604d5b192c97e4b434405a9427216ed
Evaluated output field
a1515c1e04b64d00c3ce5a312047154ded3e4d9f060ddd2da5c5c30b75d05608

Complete raw output file ↗

Identical text and isolated intervention within this pair, according to the protocol witnesses. Translations are not independent observations. View pair witnesses.

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Every result has a scope.

These observations do not rank tools. They do not measure overall accessibility, search ranking, or understanding or citation by AI.

Claims excluded by the protocol