HTMLエラーチェッカー Chrome Extension Analysis

Listing positioning

HTMLエラーチェッカー (HTML Error Checker) positions itself as a lightweight developer tool that automatically detects missing or mismatched HTML start and end tags directly in the browser. It displays the error count as a badge icon on the extension button for quick identification. The tool highlights privacy by processing code entirely via client-side JavaScript without transmitting source code externally.

Inferred product pattern

A client-side browser developer tool utility that operates entirely on the active tab DOM to scan for markup syntax anomalies.

Review-backed pain points

Users frequently report getting stuck on an infinite 'Please reload :(' loop on various websites, making the extension unusable for those pages. Additionally, it causes functional issues on specific sites with forms or administrative panels (e.g., Sakura Internet Control Panel), and strictly flags legally-omitted HTML closing tags (like <p> and <li>), causing unnecessary noise.

Observed feature gaps

The extension lacks a way to whitelist or ignore optional closing tags (such as <p> and <li>) which leads to false positives. It also struggles with complex parsing scenarios, such as HTML tags placed inside attribute strings (e.g., title attributes) or platform-specific template tags like WordPress pagination comments.

Support

There are no direct mentions of customer support complaints, though users express unresolved technical bugs like the infinite reload state.

Reliability

Users report reliability issues where the tool gets stuck in a 'Please reload :(' status. It also interferes with standard webpage functionality, especially on pages containing forms, making normal browsing difficult unless the extension is disabled.

Privacy

No privacy concerns were raised by users. The extension store description explicitly claims that all processing is done locally via client-side JavaScript without transmitting data to external servers.