Content is not locked inside <canvas>
AGENTIC_TEXT_NOT_IN_CANVAS
An agent reads the DOM and the accessibility tree. Text painted into a canvas exists only as pixels, so a canvas-rendered interface is completely opaque to it - and to screen readers, and to search engines.
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How this rule is weighted
- Importance
- 6 / 10
- How much this matters relative to other rules.
- Confidence
- RESEARCH
- Backed by large-sample study or industry research, not a specification.
- Severity
- warning
- How the finding is presented when it fails.
- Scoring
- Counts
- A failure costs points in its category.
Impact is importance multiplied by the confidence tier’s weight — SPECIFICATION 1.0, RESEARCH 0.7, EMERGING 0.3, EXPERIMENTAL 0.1. Two rules backed by the same class of evidence therefore always carry the same weight, which is what makes the score reproducible rather than hand-tuned.
Questions about this rule
- Does AGENTIC_TEXT_NOT_IN_CANVAS affect my score?
- Yes. It is an importance 6 rule at RESEARCH confidence, so a failure costs 6 × 0.7 points of impact in the AI Agent Readiness category before that category is normalised to 100.
- What does RESEARCH confidence mean?
- Backed by large-sample study or industry research, not a specification. Confidence is a declared tier rather than a per-rule number, so every rule backed by the same class of evidence carries the same weight - which is what makes the score reproducible instead of hand-tuned.
- How do I check AGENTIC_TEXT_NOT_IN_CANVAS on my own site?
- Paste your URL into the box above and it runs only this rule, usually in a couple of seconds. It is also included in the AI Agent Readiness checker and in a full scan.
Tags
- agentic
- perceive
- content
Related AI Agent Readiness rules
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- Interactive controls are real buttonsAgents locate controls through the accessibility tree, where a <div class="btn"> is not a control at all. This is the single most common reason an agent gets stuck on an otherwise ordinary page.AGENTIC_REAL_BUTTONS
- Navigation uses real linksAn agent follows href attributes. A div with a click handler is invisible to it - and unreachable without executing your JavaScript and guessing what the handler does.AGENTIC_REAL_LINKS
- A main content region is declaredAn agent orienting on an unfamiliar page looks for the main landmark first. Without one it has to guess which of forty divs holds the content, and it frequently guesses the navigation.AGENTIC_MAIN_CONTENT_MARKED
- Click handlers are not attached to generic elementsA div with onclick has no role, no accessible name and no keyboard behaviour. An agent cannot find it, and a keyboard user cannot reach it.AGENTIC_NO_DIV_CLICK_HANDLERS