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② 後台搜尋「Codevera AI Tooltip Explainer for Jargon and Confusing Terms」→ 直接安裝（推薦）
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原文外掛簡介
Every day, visitors hit a word or concept they don’t understand and leave your site to search for it. They get distracted. They don’t come back.
Codevera AI Content Explainer keeps them on the page.
Highlight any text. Press explain. GPT-4.1 returns a clear, intelligent answer right there in a tooltip. No new tab. No Google. No lost reader.
How it works:
Visitor highlights text they don’t understand
An explain button appears next to the selection
GPT-4.1 generates a clear explanation instantly
The tooltip follows them around the page so they can keep reading
Free:
OpenAI (GPT-4.1) — pre-configured and ready to go, no model selection needed
Smart caching cuts API costs by up to 70%. Repeated questions cost nothing after the first request
Rate limiting with separate buckets for logged-in and anonymous users
Tooltip with full viewport boundary detection. It never clips off-screen
Interface in 7 languages (English US/UK, Spanish, German, French, Hindi, Chinese)
See which terms your visitors ask about most
Target specific page areas with CSS selectors. Include or exclude anything
API keys encrypted and never exposed to the browser
WCAG AA compliant with keyboard navigation and screen reader support
GDPR compliant. Only the selected text leaves the server. Nothing is stored
Need more? Pro plugin available separately
A separate pro version at https://wpaiexplainer.com/pro adds Claude and Gemini providers, bulk post scanning across your archive, full tooltip styling and an editable explanations dashboard. Pro is a separate download, not unlocked from this free plugin.
Works well for:
Technical documentation where jargon stops readers mid-article
Medical or legal sites where specialist terms cost reader trust
Online courses where confusion becomes drop-offs and cancellations
News sites covering politics, finance, science, or law
Any site where reader comprehension directly affects engagement
Built for production:
Adds under 100ms to page load
Hardened against XSS, CSRF and abuse out of the box
Tested against WordPress core 5.0 and up
External Services & Privacy
This plugin sends user-selected text to OpenAI to generate the explanation. No other external services are contacted by the plugin. No telemetry, no analytics, no licence checks.
OpenAI (api.openai.com)
Privacy Policy: https://openai.com/privacy/
Terms of Service: https://openai.com/terms/
What is sent: only the text the visitor selected
Model: GPT-4.1
API keys are encrypted with WordPress salts and never exposed to the browser. Nothing is stored after the request completes.
By using this plugin you agree to comply with OpenAI’s terms. You should let your visitors know that selected text is processed by an external AI service.
If you install the separately distributed pro plugin from https://wpaiexplainer.com/pro, additional providers (Anthropic Claude and Google Gemini) become available. Those services are documented inside the pro plugin and are not called by this free plugin.
Support
Email [email protected] for support, bug reports, or feature requests. Include your WordPress version, PHP version, theme name, active provider, and a description of the issue with steps to reproduce.
Documentation is in the Help tab inside the plugin settings.
We reply within 24-48 hours on business days.
Technical Requirements
Minimum:
* WordPress 5.0
* PHP 7.4
* OpenAI API key
* JavaScript enabled in the browser
Recommended:
* WordPress 6.0 or higher
* PHP 8.0 or higher
* HTTPS enabled
Privacy & Security
The plugin does not collect or store personal data. The only external request is the selected text sent to your chosen AI provider.
API keys are encrypted with WordPress salts, stored in the database, and never sent to the browser. Only administrators can view or change them.
No cookies. No analytics. No telemetry. AJAX requests use nonces and capability checks.
Credits
OpenAI, Anthropic, and Google for their APIs
WordPress community for development standards and tools
Beta testers for feedback during development
Developers
The plugin dispatches three custom events on document:
codeveraAIExpPopupOnOpen — tooltip opened
codeveraAIExpPopupOnClose — tooltip closed
codeveraAIExpExplanationLoaded — explanation rendered
javascript
document.addEventListener('codeveraAIExpExplanationLoaded', function(event) {
console.log('Explanation loaded:', event.detail);
});
For hook and filter documentation, email [email protected].
Links
Website: https://wpaiexplainer.com
Support: [email protected]
