SEO JS Checker

Name: SEO JS Checker
Rating: 3 (2 reviews)
Author: Adam King

Smart audits for JavaScript SEO: Quickly uncover how dynamic content, metadata & links are rendered to reveal JS-related SEO issues.

As of June 2026, SEO JS Checker has 545 users and a 3.00/5 rating from 2 reviews in the Developer Tools category.

Adam King Developer Tools

Chrome Web Store ↗.crx

Users+4.0%

545

Rating0%

3.00

2 reviews

Reviews0%

Version

0.8.0

Manifest V3

90-day change · In the last 90 days this extension 2 version updates, changed permissions.

History

7 snapshots

Tracking since Apr 18, 2026.

View as table

Date	Users	Rating	Reviews	Version
Apr 18, 2026	524	3.00	2	0.7.02
Apr 28, 2026	528	3.00	2	0.7.02
May 11, 2026	526	3.00	2	0.7.3
May 22, 2026	534	3.00	2	0.8.0
May 29, 2026	525	3.00	2	0.8.0
Jun 5, 2026	534	3.00	2	0.8.0
Jun 11, 2026	546	3.00	2	0.8.0
Now	545	3.00	2	0.8.0

Changelog

May 11, 2026

permissions

activeTab, storage

activeTab, storage, tabs, webNavigation

Permissions & access

Permissions: activeTabstoragetabswebNavigation
Host access: <all_urls>

Screenshots

About

SEO JavaScript Checker – Smart Audits for JavaScript SEO

SEO JS Checker is a Chrome extension that helps you identify critical JavaScript-related SEO issues. It fetches the page’s raw HTML and compares it to the live, client‑rendered DOM, highlighting differences across head tags, visible text, and links. Use it to quickly spot SEO risks introduced by client‑side rendering.

What it does:

- Head-tag comparisons: title, meta description, robots, canonical, preload, preconnect, hreflang, JSON‑LD, Open Graph, Twitter Card.

- Visible text block diffs for major blocks/headings.

- Link grouping: internal vs. external, with Added/Removed/Changed/Unchanged status.

- Badge indicators: count of changed head items, HTTP status for non‑200, or an unsupported marker.

- Popup tabs: Head, Changes, Links, Text – with filters and CSV export.

Built for SEOs, developers, and site owners who care about how their content appears to Google—before and after JavaScript runs.