This technical SEO audit tool inspects raw HTML markup to extract all hyperlink anchor texts and evaluate their keyword frequency distribution. Search engine ranking algorithms (including Google's Penguin update) analyze inbound and internal link anchor text to understand topical relevance. An unnaturally high concentration of exact-match commercial anchor text can trigger over-optimization penalties, making keyword distribution auditing essential.

### Parsing Architecture & Frequency Sorting The analyzer processes pasted HTML markup through a client-side extraction pipeline:

- **Anchor Tag Extraction:** Evaluates all `<a>` hyperlink elements using regular expression matching: `/<a[^>]*>(.*?)<\/a>/gi`. - **HTML Tag Stripping:** Removes nested formatting elements (such as `<span>`, `<strong>`, or `<em>`) from within the link tag, extracting clean textual labels. - **Frequency Counting:** Normalizes whitespace and records occurrences of each distinct anchor text string in a key-value hash map. - **Descending Frequency Ordering:** Sorts extracted phrases in descending order of occurrence: `Object.entries(freq).sort((a, b) => b[1] - a[1])`. - **Reporting Output:** Formats results as `[Anchor Text]: [Count]`. If no links are present in the markup, the tool outputs `No links found`.

### Concrete Audit Example Pasting the following sample blog markup: ```html <p>Explore our <a href="/vpn">best vpn service</a> for privacy.</p> <p>Compare <a href="/vpn">best vpn service</a> reviews and <a href="/about">learn more</a>.</p> <p>Get the <a href="/vpn">best vpn service</a> today.</p> ```

**Generated Anchor Frequency Report:** 1. `best vpn service: 3` 2. `learn more: 1` *Analysis:* In this snippet, 75% of links use the exact-match commercial keyword `best vpn service`, indicating a need to diversify with branded or natural anchor variations (such as company brand names or partial matches).

### Client-Side Processing Note All regular expression parsing, HTML tag stripping, and frequency tallying evaluate entirely inside your browser's JavaScript runtime. No page content, site markup, or competitor backlink lists are sent across a network.