Functionality & UI
Growth signalUnknownLow-risk permissions
Heading Structure Checker (H1–H6) icon

Heading Structure Checker (H1–H6)

Paste HTML to validate H1–H6 hierarchy, detect skips, and generate a clean heading outline.

Users142Current public install base
Rating--Store average score
Reviews0Public review volume
Manifest versionV3Extension platform version
7-day growth+3Net users gained this week
7-day growth rate+2.16%Relative weekly velocity
Preview

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1421431441441452026年6月11日2026年6月14日2026年6月17日Latest: 142
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1-day growthFlat
00%
7-day growthGrowing
+3+2.16%
30-day growthGrowing
+21+17.4%
Technical snapshot

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Version1.0.0
ManifestV3
Size13.33KiB
Languages1English
Published
Store updated
Last crawled
English
Overview

Product summary

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Heading Structure Checker (H1–H6) is a lightweight Chrome extension designed to help website owners, SEO specialists, content editors, and developers quickly review the structural quality of HTML headings.

The extension allows you to paste raw HTML content and instantly analyze the hierarchy of heading tags from H1 to H6. It generates a clear outline, displays heading counts, and highlights common structural issues such as missing H1 tags, multiple H1s, skipped heading levels, or improperly ordered headings.

All analysis is performed locally inside the browser using standard web APIs. The extension does not access web pages, does not collect data, and does not require any special permissions. Your content is never transmitted or stored externally.

Key features include:

Paste-based HTML analysis with no page access

Automatic detection of H1–H6 heading structure

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