History

10 snapshots

Tracking since Apr 10, 2026.

View as table

Date	Users	Rating	Reviews	Version
Apr 10, 2026	4	—	—	1.0.1
Apr 20, 2026	5	—	—	1.0.1
Apr 26, 2026	28	—	—	1.0.1
May 4, 2026	29	—	—	1.0.1
May 10, 2026	31	—	—	1.0.1
May 15, 2026	32	5.00	2	1.0.1
May 21, 2026	30	5.00	2	1.0.1
May 27, 2026	33	5.00	2	1.0.1
Jun 3, 2026	34	5.00	2	1.0.2
Jun 9, 2026	30	5.00	2	1.0.2
Now	25	5.00	2	1.0.2

Changelog

May 27, 2026

description

Fennec SEO Auditor – Chrome SEO Audit Side Panel
Fennec SEO Auditor is a Chrome extension that turns your browser into a real‑time SEO audit console. It lives in the Chrome side panel so you can analyze any page without leaving it, and gives you a structured view of on‑page SEO, technical SEO signals, and content quality.

This document focuses on:

Clear usage instructions for everyday SEO work
ASO‑friendly wording so users can discover the extension in the Chrome Web Store
1. Key Features (What You Get)
Fennec SEO Auditor is designed for on‑page SEO audits, technical checks, and quick issue discovery.

Comprehensive SEO audit in one click
Run a full on‑page SEO audit for the current tab
See meta tags, headings, content signals, links, images, robots.txt, sitemap, schema, Open Graph, and more
Side panel experience
Always visible on the right side of Chrome
Audit pages while browsing search results, competitors, or client sites
Meta & head tag analysis
Page title and meta description length, status, and quality hints
Canonical URL, viewport, language, and other critical head tags
Heading structure (H1–H6)
H1/H2/H3 counts and potential issues (missing, duplicated, over‑used)
Quick view of heading distribution for content structure audits
Link analysis (internal / external / nofollow)
Total links, internal vs external, nofollow usage, duplicate links
Link table with URL, anchor text, rel, target, and status
Image analysis (alt text & size)
Total images, missing or empty alt attributes
Large image detection (by estimated file size)
Quick preview and original image links
Robots.txt & sitemap check
Detect robots.txt availability and basic content
Check sitemap URLs and sitemap stats (where available)
Structured data / Schema.org
Detect JSON‑LD, Microdata, RDFa
Summary of schema types and implementation quality
Simple SERP rich result preview for common schema types
Social tags (Open Graph / Twitter)
Check OG and Twitter card tags for social sharing optimization
Quick launch of third‑party SEO tools
One‑click open to Ahrefs, GTmetrix, PageSpeed Insights, Semrush and more (using the current page URL)
2. Who This Extension Is For
This extension is built for:

SEO specialists and consultants who perform on‑page SEO audits every day
Content marketers and copywriters who want to validate titles, descriptions, and headings
Technical SEOs who care about robots.txt, sitemaps, schema markup, and HTTP headers
Product managers and growth teams who need quick SEO checks without leaving the browser
If you regularly check title tags, descriptions, headings, canonical URLs, structured data, or link quality, Fennec SEO Auditor helps you do it faster inside Chrome.

3. Installation & First Run
3.1 Install from the Chrome Web Store
Open the Chrome Web Store.
Search for “Fennec SEO Auditor” or “SEO audit side panel”.
Click Add to Chrome.
Confirm the permissions (tabs, activeTab, sidePanel, offscreen, contextMenus, storage, etc.).
The extension needs access to the current tab to read on‑page HTML and run a full SEO audit. It does not modify the page content.

3.2 Open the side panel
After installation:

Click the Fennec SEO Auditor icon in the Chrome toolbar.
The Chrome side panel will open on the right side.
You will see the main Comprehensive Audit view with a loading indicator.
The extension automatically runs an initial SEO audit for the active page (unless the URL is a restricted browser page such as chrome://).

4. Using the Side Panel – Main Workflow
4.1 Run a comprehensive SEO audit
There are two main ways to start an audit:

Side panel home (house icon)
Click the home icon in the left menu (Comprehensive Audit). This will:
Reload the main audit UI
Run a fresh SEO audit for the current page
Refresh button in the top bar
Click the refresh icon next to the extension title to re‑run the audit.
During the audit:

A loading overlay is shown
Progress messages appear in the internal log
Once done, all sections (overview, links, images, robots, schema, social, etc.) are populated
4.2 Navigate sections inside the audit
At the top of the audit view you will see navigation tabs (overview, headings, meta, links, images, robots & sitemap, schema, social, etc.).

Click a tab to scroll smoothly to that section.
The scroll spy keeps the active tab in sync with your scroll position.
You can copy the current URL from the top bar using the copy button.

5. Using Individual SEO Tools (Sub‑Tools)
The left menu contains dedicated tools which reuse the same analysis data:

H Tags – heading structure and best‑practice hints
Schema Analysis – structured data detection and SERP‑style preview
Link Analysis – internal / external / nofollow link stats plus detailed table
Image Analysis – missing alt text, broken images, large images
Meta / Head Detection – detailed head tag breakdown
Social Analysis – Open Graph & Twitter card summary
Robots.txt Analysis – robots.txt presence, content, Disallow / Sitemap lines
Sitemap Analysis – sitemap URLs and basic stats
LLMs.txt Check – simple check for AI/LLM‑related declarations
What’s Run Detection – lightweight detection of technologies running on the page
When you click one of these items:

The side panel loads the tool UI.
The extension reuses the latest analyzed page data when possible.
For tools that require additional network checks (robots.txt, sitemap), extra requests are made in the background.
You can always click Comprehensive Audit (home icon) again to return to the full overview and re‑run the complete audit.

6. Context Menu Integration (Right‑Click Menu)
Fennec SEO Auditor also adds a page context menu for quick access to external tools.

Right‑click on any page.
Look for “Fenne SEO Auditor” in the context menu.
Use the submenu to:
Open Website Authority Checker (Ahrefs)
Launch Backlink Checker
Run a Broken Link Checker
Open PageSpeed Insights
View the site in Google, Bing, Yandex, or Baidu search (site:domain)
View historical snapshots in Archive.org
This is useful when you want to combine on‑page SEO audit with off‑page signals and performance checks.

7. Typical Use Cases & Workflows
Here are common workflows where the extension is especially helpful:

On‑page SEO audit for a new client
Open the client’s homepage
Run a comprehensive audit
Check title, description, H1/H2, internal links, and images
Verify robots.txt and sitemap availability
Review structured data and social tags
Content optimization while writing
Open a draft page or staging environment
Use the side panel to check headings, meta tags, and content length
Fix missing alt text and adjust link structure
Technical SEO sanity check
Confirm canonical tags, language, robots directives, and HTTP status
Ensure sitemap URLs are discoverable from robots.txt
Validate core schema types for rich results eligibility
Competitive analysis
Open a competitor’s URL from SERPs
Run an audit to see how they structure titles, descriptions, headings, links, and schema
8. Permissions & Privacy
To deliver a full SEO audit, the extension needs:

tabs & activeTab – to read the URL and access the current page’s content
scripting & offscreen – to safely analyze HTML in an isolated DOM environment
contextMenus – to add the Fennec SEO Auditor entry to the right‑click menu
sidePanel – to render the audit UI in Chrome’s side panel
storage – to remember UI preferences (such as theme and basic settings)
The extension:

Does not inject ads
Does not modify page content
Uses the analyzed data only to compute SEO metrics and show you the results
9. Troubleshooting
If you encounter issues:

Side panel shows “forbidden”
Chrome’s internal pages (e.g. chrome://, chrome-extension://, about:blank, some special URLs) cannot be audited. Open a normal HTTP(S) page instead.

Audit appears stuck on “loading”
Click the refresh button or the Comprehensive Audit (home icon) again. This triggers a fresh audit for the current URL.

Robots.txt or sitemap reported as “not found”
Some sites intentionally skip robots.txt or sitemap.xml, or use non‑standard locations. The extension reports what is publicly available at common endpoints.

If problems persist, try:

Refreshing the page
Disabling conflicting extensions temporarily
Reinstalling Fennec SEO Auditor
10. ASO‑Friendly Keywords (for Store Listing)
You can reuse the following phrases in your Chrome Web Store listing to improve discoverability:

SEO audit extension for Chrome
On‑page SEO checker in side panel
Technical SEO audit (meta tags, headings, links, images)
Robots.txt and sitemap analyzer
Schema.org structured data and rich results preview
Open Graph / Twitter card social preview
SEO toolkit for content marketers and SEOs
These keywords are already reflected throughout this README so that users searching for “SEO audit”, “on page SEO”, “schema markup check”, “robots.txt checker”, or “sitemap analyzer” can more easily understand what the extension does.

Fennec SEO Auditor is a Chrome extension that turns your browser into a real‑time SEO audit console. It lives in the Chrome side panel so you can analyze any page without leaving it, and gives you a structured view of on‑page SEO, technical SEO signals, and content quality.

「New feature: Support web site URL redirection link analysis and inspection」

Uages:

Comprehensive SEO audit in one click
Run a full on‑page SEO audit for the current tab

1.Side panel experience

Always visible on the right side of Chrome
Audit pages while browsing search results, competitors, or client sites
Meta & head tag analysis
Page title and meta description length, status, and quality hints
Canonical URL, viewport, language, and other critical head tags
Heading structure (H1–H6)
H1/H2/H3 counts and potential issues (missing, duplicated, over‑used)
Quick view of heading distribution for content structure audits
Link analysis (internal / external / nofollow)
Total links, internal vs external, nofollow usage, duplicate links
Link table with URL, anchor text, rel, target, and status
Image analysis (alt text & size)
Total images, missing or empty alt attributes
Large image detection (by estimated file size)
Quick preview and original image links
Robots.txt & sitemap check
Detect robots.txt availability and basic content
Check sitemap URLs and sitemap stats (where available)
Structured data / Schema.org
Detect JSON‑LD, Microdata, RDFa
Summary of schema types and implementation quality
Simple SERP rich result preview for common schema types
Social tags (Open Graph / Twitter)
Check OG and Twitter card tags for social sharing optimization
Quick launch of third‑party SEO tools
One‑click open to Ahrefs, GTmetrix, PageSpeed Insights, Semrush and more (using the current page URL)

2. Who This Extension Is For
This extension is built for:

SEO specialists and consultants who perform on‑page SEO audits every day
Content marketers and copywriters who want to validate titles, descriptions, and headings
Technical SEOs who care about robots.txt, sitemaps, schema markup, and HTTP headers
Product managers and growth teams who need quick SEO checks without leaving the browser
If you regularly check title tags, descriptions, headings, canonical URLs, structured data, or link quality, Fennec SEO Auditor helps you do it faster inside Chrome.

3. Installation & First Run
3.1 Install from the Chrome Web Store
Open the Chrome Web Store.
Search for “Fennec SEO Auditor” or “SEO audit side panel”.
Click Add to Chrome.
Confirm the permissions (tabs, activeTab, sidePanel, offscreen, contextMenus, storage, etc.).
The extension needs access to the current tab to read on‑page HTML and run a full SEO audit. It does not modify the page content.

3.2 Open the side panel
After installation:

Click the Fennec SEO Auditor icon in the Chrome toolbar.
The Chrome side panel will open on the right side.
You will see the main Comprehensive Audit view with a loading indicator.
The extension automatically runs an initial SEO audit for the active page (unless the URL is a restricted browser page such as chrome://).

4. Using the Side Panel – Main Workflow
4.1 Run a comprehensive SEO audit
There are two main ways to start an audit:

Side panel home (house icon)
Click the home icon in the left menu (Comprehensive Audit). This will:
Reload the main audit UI
Run a fresh SEO audit for the current page
Refresh button in the top bar
Click the refresh icon next to the extension title to re‑run the audit.
During the audit:

A loading overlay is shown
Progress messages appear in the internal log
Once done, all sections (overview, links, images, robots, schema, social, etc.) are populated

5. Using Individual SEO Tools (Sub‑Tools)
The left menu contains dedicated tools which reuse the same analysis data:

H Tags – heading structure and best‑practice hints
Schema Analysis – structured data detection and SERP‑style preview
Link Analysis – internal / external / nofollow link stats plus detailed table
Image Analysis – missing alt text, broken images, large images
Meta / Head Detection – detailed head tag breakdown
Social Analysis – Open Graph & Twitter card summary
Robots.txt Analysis – robots.txt presence, content, Disallow / Sitemap lines
Sitemap Analysis – sitemap URLs and basic stats
LLMs.txt Check – simple check for AI/LLM‑related declarations
What’s Run Detection – lightweight detection of technologies running on the page
When you click one of these items:

The side panel loads the tool UI.
The extension reuses the latest analyzed page data when possible.
For tools that require additional network checks (robots.txt, sitemap), extra requests are made in the background.
You can always click Comprehensive Audit (home icon) again to return to the full overview and re‑run the complete audit.

6. Context Menu Integration (Right‑Click Menu)
Fennec SEO Auditor also adds a page context menu for quick access to external tools.

Right‑click on any page.
Look for “Fenne SEO Auditor” in the context menu.
Use the submenu to:
Open Website Authority Checker (Ahrefs)
Launch Backlink Checker
Run a Broken Link Checker
Open PageSpeed Insights
View the site in Google, Bing, Yandex, or Baidu search (site:domain)
View historical snapshots in Archive.org
This is useful when you want to combine on‑page SEO audit with off‑page signals and performance checks.

7. Troubleshooting
If you encounter issues:

Side panel shows “forbidden”
Chrome’s internal pages (e.g. chrome://, chrome-extension://, about:blank, some special URLs) cannot be audited. Open a normal HTTP(S) page instead.

Audit appears stuck on “loading”
Click the refresh button or the Comprehensive Audit (home icon) again. This triggers a fresh audit for the current URL.

Robots.txt or sitemap reported as “not found”
Some sites intentionally skip robots.txt or sitemap.xml, or use non‑standard locations. The extension reports what is publicly available at common endpoints.

If problems persist, try:

Refreshing the page
Disabling conflicting extensions temporarily
Reinstalling Fennec SEO Auditor
10. ASO‑Friendly Keywords (for Store Listing)
You can reuse the following phrases in your Chrome Web Store listing to improve discoverability

May 27, 2026

permissions

tabs, scripting, contextMenus, offscreen, sidePanel, storage

tabs, scripting, contextMenus, offscreen, sidePanel, storage, webRequest

Permissions & access

Permissions: tabsscriptingcontextMenusoffscreensidePanelstoragewebRequest
Host access: *://*/*

Screenshots

About