Uper SEO Auditor
All-in-one SEO auditor in your sidebar — meta tags, schema, links, images, 7K+ technologies and more. 100% local, no account needed.
As of June 2026, Uper SEO Auditor has 29 users and a 5.00/5 rating from 6 reviews in the Developer Tools category.
Usersup 38.1 percent+38.1%
29
29
Ratingno change0%
5.00
6 reviews
Reviewsno change0%
6
Version
2.7.15
Manifest V3
90-day change · In the last 90 days this extension 2 version updates, changed permissions.
History
11 snapshotsTracking since Apr 1, 2026.
View as table
| Date | Users | Rating | Reviews | Version |
|---|---|---|---|---|
| Apr 1, 2026 | 21 | 5.00 | 6 | 2.7.11 |
| Apr 17, 2026 | 22 | 5.00 | 6 | 2.7.12 |
| Apr 22, 2026 | 17 | 5.00 | 6 | 2.7.12 |
| Apr 27, 2026 | — | 5.00 | 6 | 2.7.15 |
| May 4, 2026 | 19 | 5.00 | 6 | 2.7.15 |
| May 10, 2026 | 22 | 5.00 | 6 | 2.7.15 |
| May 15, 2026 | 21 | 5.00 | 6 | 2.7.15 |
| May 21, 2026 | 19 | 5.00 | 6 | 2.7.15 |
| May 28, 2026 | 26 | 5.00 | 6 | 2.7.15 |
| Jun 4, 2026 | 27 | 5.00 | 6 | 2.7.15 |
| Jun 10, 2026 | 31 | 5.00 | 6 | 2.7.15 |
| Now | 29 | 5.00 | 6 | 2.7.15 |
Changelog
- Apr 22, 2026description
Uper SEO Auditor gives you a full on-page SEO audit directly in your browser's side panel — no tab switching, no external tools, no account needed. All analysis runs locally in your browser. 🔒 100% PRIVACY All data stays in your browser. No external servers, no tracking, no login required. Your data is yours. 🔍 WHAT YOU CAN ANALYZE META & CONTENT • Title, description, canonical URL, robots directives • Open Graph and Twitter Card validation with previews • Heading structure analysis (H1-H6 hierarchy) • Keyword density and readability scoring 📊 STRUCTURED DATA • JSON-LD schema detection and validation • Rich Results compatibility checking • Smart schema recommendations based on page type 🔗 LINKS • Internal and external link breakdown • Nofollow, sponsored, UGC attribute detection • Empty and broken link detection 🖼️ IMAGES & MEDIA • Alt text audit, dimensions, file size • Lazy loading and modern format detection • Oversized image warnings • CSS background-image analysis 🛠️ TECHNOLOGY DETECTION • Identify CMS, frameworks, libraries, analytics tools, CDNs and more • Over 7,000 technology signatures in the database • Version identification where available • Design system extraction — colors, fonts, spacing 📈 GOOGLE SERVICES • Detect analytics, tag management, ad services and other integrations • Event monitoring and categorization • Consent Mode v2 validation • DataLayer inspector 🍪 TRACKERS & COOKIES • Cookie identification against a database of 2,200+ known cookies • Privacy categorization and consent management detection • Storage analysis — localStorage, sessionStorage, IndexedDB • Tracking pixel and beacon detection ♿ ACCESSIBILITY • Automated WCAG 2.2 checks across 9 categories • Contrast ratio checking with font-size awareness • AI-powered fix suggestions you can paste into any AI assistant 🔐 SECURITY • HTTPS validation and security headers analysis • Cookie security flags audit 🌐 SITE ESSENTIALS • Check for robots.txt, sitemap.xml, security.txt, llms.txt, ads.txt • AI crawler access rules overview • Favicon and web manifest detection • Sitemap analyzer with CSV export 🌍 INTERNATIONALIZATION • Hreflang tag validation • Language declaration checking 📤 EXPORT • Export reports to JSON, CSV, or PDF • Comprehensive PDF reports with SEO score ✨ WHY UPER? • Side panel — audit pages without leaving them • Fast — instant analysis on page load • Private — everything runs locally, zero data sent anywhere • Free — no account, no subscription, no limits • Lightweight — small package, fast install • Dark and light theme support What's New in 2.7.12: • Sitemap AI Audit Prompt — One-click AI prompt with full sitemap audit: status breakdown, duplicates, content stats, and prioritized fix recommendations • Sitemap Extended Metadata — Extracts lastmod, priority, changefreq, images, videos, and hreflang from sitemaps with new CSV export columns • Sitemap Redirect Detection — Detects 301/302 redirects during analysis with final URL tracking • Sitemap Tabbed Preview — Audit preview split into Overview, Changes, and External Links tabs with bar charts, domain/URL tables, and CSV export• Sitemap PDF & Print — Save or print the full sitemap audit report directly from the preview page • Sitemap Filter Sorting — Filtered results now sort by relevant field (duplicates grouped together, length issues by severity) • Sitemap Large Cache Fix — Sites with 4,000+ URLs no longer fail to cache silently • A11y HTML Context — AI fix suggestions now include parent HTML structure for easier issue location • A11y Accuracy — Fixed text-resize false positives and filtered out third-party widgets (cookie banners, chat widgets) • Canonical Hash Fix — No more false warnings when page URL contains a hash fragment • Page Stats — Full URLs displayed with CSS truncation instead of cut-off filenames What's New in 2.7.11: • CLS text snippets fixed — Layout shift source previews • Code cleanup — Removed duplicate code across modules, reducing codebase duplication to under 1% • 30% smaller extension
Uper SEO Auditor gives you a full on-page SEO audit directly in your browser's side panel — no tab switching, no external tools, no account needed. All analysis runs locally in your browser. 🔒 100% PRIVACY All data stays in your browser. No external servers, no tracking, no login required. Your data is yours. 🔍 WHAT YOU CAN ANALYZE META & CONTENT • Title, description, canonical URL, robots directives • Open Graph and Twitter Card validation with previews • Heading structure analysis (H1-H6 hierarchy) • Keyword density and readability scoring 📊 STRUCTURED DATA • JSON-LD schema detection and validation • Rich Results compatibility checking • Smart schema recommendations based on page type 🔗 LINKS • Internal and external link breakdown • Nofollow, sponsored, UGC attribute detection • Empty and broken link detection 🖼️ IMAGES & MEDIA • Alt text audit, dimensions, file size • Lazy loading and modern format detection • Oversized image warnings • CSS background-image analysis 🛠️ TECHNOLOGY DETECTION • Identify CMS, frameworks, libraries, analytics tools, CDNs and more • Over 7,000 technology signatures in the database • Version identification where available • Design system extraction — colors, fonts, spacing 📈 GOOGLE SERVICES • Detect analytics, tag management, ad services and other integrations • Event monitoring and categorization • Consent Mode v2 validation • DataLayer inspector 🍪 TRACKERS & COOKIES • Cookie identification against a database of 2,200+ known cookies • Privacy categorization and consent management detection • Storage analysis — localStorage, sessionStorage, IndexedDB • Tracking pixel and beacon detection ♿ ACCESSIBILITY • Automated WCAG 2.2 checks across 9 categories • Contrast ratio checking with font-size awareness • AI-powered fix suggestions you can paste into any AI assistant 🔐 SECURITY • HTTPS validation and security headers analysis • Cookie security flags audit 🌐 SITE ESSENTIALS • Check for robots.txt, sitemap.xml, security.txt, llms.txt, ads.txt • AI crawler access rules overview • Favicon and web manifest detection • Sitemap analyzer with CSV export 🌍 INTERNATIONALIZATION • Hreflang tag validation • Language declaration checking 📤 EXPORT • Export reports to JSON, CSV, or PDF • Comprehensive PDF reports with SEO score ✨ WHY UPER? • Side panel — audit pages without leaving them • Fast — instant analysis on page load • Private — everything runs locally, zero data sent anywhere • Free — no account, no subscription, no limits • Lightweight — small package, fast install • Dark and light theme support What's New in 2.7.14: - RSS/Atom Feed Detection — Finds feeds from page HTML and common paths (/feed, /rss.xml, /atom.xml). Shows type, title, and URL in Site Essentials - Social Preview Fix — OG/Twitter image previews now load on sites with strict CORP headers What's New in 2.7.13: - llms.txt Detection & Validation — Detects llms.txt/llms-full.txt and validates against the spec - llms.txt Generator — Generate llms.txt from sitemap data with language selector, smart filtering, and AI optimization prompt - Sitemap Hreflang from HTML — Merges hreflang from page <head> with sitemap XML data - Thumbnail CORP Fix — Fixed images not loading due to Content Security Policy blocking What's New in 2.7.12: - Sitemap AI Audit — One-click AI prompt with full audit: status breakdown, duplicates, content stats, and fix recommendations - Sitemap Metadata — Extracts lastmod, priority, changefreq, images, videos, hreflang with new CSV columns - Sitemap Redirects — Detects 301/302 redirects with final URL tracking - Sitemap Tabbed Preview — Overview, Changes, and External Links tabs with charts and CSV export - Sitemap PDF & Print — Save or print the full audit report from the preview page - Sitemap Filter Sorting — Duplicates grouped together, length issues sorted by severity - Sitemap Large Cache Fix — Sites with 4,000+ URLs no longer fail silently - A11y HTML Context — AI suggestions include parent HTML for easier issue location - A11y Accuracy — Fixed text-resize false positives, filtered third-party widgets - Canonical Hash Fix — No false warnings when URL contains a hash fragment - Page Stats — Full URLs with CSS truncation instead of cut-off filenames What's New in 2.7.11: • CLS text snippets fixed — Layout shift source previews • Code cleanup — Removed duplicate code across modules, reducing codebase duplication to under 1% • 30% smaller extension - Apr 22, 2026permissions
activeTab, tabs, scripting, webRequest, storage, unlimitedStorage, clipboardWrite, sidePanel, cookies, contextMenus, debugger
activeTab, tabs, scripting, webRequest, storage, unlimitedStorage, clipboardWrite, sidePanel, cookies, contextMenus
- Apr 1, 2026description
Uper SEO Auditor gives you a full on-page SEO audit directly in your browser's side panel — no tab switching, no external tools, no account needed. All analysis runs locally in your browser. 🔒 100% PRIVACY All data stays in your browser. No external servers, no tracking, no login required. Your data is yours. 🔍 WHAT YOU CAN ANALYZE META & CONTENT • Title, description, canonical URL, robots directives • Open Graph and Twitter Card validation with previews • Heading structure analysis (H1-H6 hierarchy) • Keyword density and readability scoring 📊 STRUCTURED DATA • JSON-LD schema detection and validation • Rich Results compatibility checking • Smart schema recommendations based on page type 🔗 LINKS • Internal and external link breakdown • Nofollow, sponsored, UGC attribute detection • Empty and broken link detection 🖼️ IMAGES & MEDIA • Alt text audit, dimensions, file size • Lazy loading and modern format detection • Oversized image warnings • CSS background-image analysis 🛠️ TECHNOLOGY DETECTION • Identify CMS, frameworks, libraries, analytics tools, CDNs and more • Over 7,000 technology signatures in the database • Version identification where available • Design system extraction — colors, fonts, spacing 📈 GOOGLE SERVICES • Detect analytics, tag management, ad services and other integrations • Event monitoring and categorization • Consent Mode v2 validation • DataLayer inspector 🍪 TRACKERS & COOKIES • Cookie identification against a database of 2,200+ known cookies • Privacy categorization and consent management detection • Storage analysis — localStorage, sessionStorage, IndexedDB • Tracking pixel and beacon detection ♿ ACCESSIBILITY • Automated WCAG 2.2 checks across 9 categories • Contrast ratio checking with font-size awareness • AI-powered fix suggestions you can paste into any AI assistant 🔐 SECURITY • HTTPS validation and security headers analysis • Cookie security flags audit 🌐 SITE ESSENTIALS • Check for robots.txt, sitemap.xml, security.txt, llms.txt, ads.txt • AI crawler access rules overview • Favicon and web manifest detection • Sitemap analyzer with CSV export 🌍 INTERNATIONALIZATION • Hreflang tag validation • Language declaration checking 📤 EXPORT • Export reports to JSON, CSV, or PDF • Comprehensive PDF reports with SEO score ✨ WHY UPER? • Side panel — audit pages without leaving them • Fast — instant analysis on page load • Private — everything runs locally, zero data sent anywhere • Free — no account, no subscription, no limits • Lightweight — small package, fast install • Dark and light theme support What's New in 2.7.11: • CLS text snippets fixed — Layout shift source previews • Code cleanup — Removed duplicate code across modules, reducing codebase duplication to under 1% • 30% smaller extension What's New in 2.7.10: • Core Web Vitals Attribution — Click any LCP, CLS, or INP metric to see exactly what's causing the issue: element selectors, shift sources, interaction breakdowns, and slow scripts (via Long Animation Frames API) • Page Stats Details — Click Weight, Requests, DOM, JS Size, TTFB, or FCP cards to reveal detailed breakdowns: largest resources, request types, DOM structure, render-blocking resources, and more • Copy to Clipboard — All detail panels now include a copy button for quick data export • Smarter AI Audit Prompts — "Comprehensive SEO Audit" now includes Web Vitals data and performance stats with specific elements, selectors, and file sizes for more precise recommendations • Sitemap Analyzer — Preview in new tab, comparison view (diff what changed), context menu integration, and cached data management • Bug fixes — CLS column alignment, copy button reliability, sitemap domain switching
Uper SEO Auditor gives you a full on-page SEO audit directly in your browser's side panel — no tab switching, no external tools, no account needed. All analysis runs locally in your browser. 🔒 100% PRIVACY All data stays in your browser. No external servers, no tracking, no login required. Your data is yours. 🔍 WHAT YOU CAN ANALYZE META & CONTENT • Title, description, canonical URL, robots directives • Open Graph and Twitter Card validation with previews • Heading structure analysis (H1-H6 hierarchy) • Keyword density and readability scoring 📊 STRUCTURED DATA • JSON-LD schema detection and validation • Rich Results compatibility checking • Smart schema recommendations based on page type 🔗 LINKS • Internal and external link breakdown • Nofollow, sponsored, UGC attribute detection • Empty and broken link detection 🖼️ IMAGES & MEDIA • Alt text audit, dimensions, file size • Lazy loading and modern format detection • Oversized image warnings • CSS background-image analysis 🛠️ TECHNOLOGY DETECTION • Identify CMS, frameworks, libraries, analytics tools, CDNs and more • Over 7,000 technology signatures in the database • Version identification where available • Design system extraction — colors, fonts, spacing 📈 GOOGLE SERVICES • Detect analytics, tag management, ad services and other integrations • Event monitoring and categorization • Consent Mode v2 validation • DataLayer inspector 🍪 TRACKERS & COOKIES • Cookie identification against a database of 2,200+ known cookies • Privacy categorization and consent management detection • Storage analysis — localStorage, sessionStorage, IndexedDB • Tracking pixel and beacon detection ♿ ACCESSIBILITY • Automated WCAG 2.2 checks across 9 categories • Contrast ratio checking with font-size awareness • AI-powered fix suggestions you can paste into any AI assistant 🔐 SECURITY • HTTPS validation and security headers analysis • Cookie security flags audit 🌐 SITE ESSENTIALS • Check for robots.txt, sitemap.xml, security.txt, llms.txt, ads.txt • AI crawler access rules overview • Favicon and web manifest detection • Sitemap analyzer with CSV export 🌍 INTERNATIONALIZATION • Hreflang tag validation • Language declaration checking 📤 EXPORT • Export reports to JSON, CSV, or PDF • Comprehensive PDF reports with SEO score ✨ WHY UPER? • Side panel — audit pages without leaving them • Fast — instant analysis on page load • Private — everything runs locally, zero data sent anywhere • Free — no account, no subscription, no limits • Lightweight — small package, fast install • Dark and light theme support What's New in 2.7.12: • Sitemap AI Audit Prompt — One-click AI prompt with full sitemap audit: status breakdown, duplicates, content stats, and prioritized fix recommendations • Sitemap Extended Metadata — Extracts lastmod, priority, changefreq, images, videos, and hreflang from sitemaps with new CSV export columns • Sitemap Redirect Detection — Detects 301/302 redirects during analysis with final URL tracking • Sitemap Tabbed Preview — Audit preview split into Overview, Changes, and External Links tabs with bar charts, domain/URL tables, and CSV export• Sitemap PDF & Print — Save or print the full sitemap audit report directly from the preview page • Sitemap Filter Sorting — Filtered results now sort by relevant field (duplicates grouped together, length issues by severity) • Sitemap Large Cache Fix — Sites with 4,000+ URLs no longer fail to cache silently • A11y HTML Context — AI fix suggestions now include parent HTML structure for easier issue location • A11y Accuracy — Fixed text-resize false positives and filtered out third-party widgets (cookie banners, chat widgets) • Canonical Hash Fix — No more false warnings when page URL contains a hash fragment • Page Stats — Full URLs displayed with CSS truncation instead of cut-off filenames What's New in 2.7.11: • CLS text snippets fixed — Layout shift source previews • Code cleanup — Removed duplicate code across modules, reducing codebase duplication to under 1% • 30% smaller extension
- Apr 1, 2026permissions
activeTab, tabs, scripting, webRequest, storage, clipboardWrite, sidePanel, cookies, contextMenus
activeTab, tabs, scripting, webRequest, storage, unlimitedStorage, clipboardWrite, sidePanel, cookies, contextMenus, debugger
Permissions & access
- Permissions
- activeTabtabsscriptingwebRequeststorageunlimitedStorageclipboardWritesidePanelcookiescontextMenus
- Host access
- <all_urls>
Screenshots
About
Uper SEO Auditor gives you a full on-page SEO audit directly in your browser's side panel — no tab switching, no external tools, no account needed. All analysis runs locally in your browser.
🔒 100% PRIVACY
All data stays in your browser. No external servers, no tracking, no login required. Your data is yours.
🔍 WHAT YOU CAN ANALYZE
META & CONTENT
• Title, description, canonical URL, robots directives
• Open Graph and Twitter Card validation with previews
• Heading structure analysis (H1-H6 hierarchy)
• Keyword density and readability scoring
📊 STRUCTURED DATA
• JSON-LD schema detection and validation
• Rich Results compatibility checking
• Smart schema recommendations based on page type
🔗 LINKS
• Internal and external link breakdown
• Nofollow, sponsored, UGC attribute detection
• Empty and broken link detection
🖼️ IMAGES & MEDIA
• Alt text audit, dimensions, file size
• Lazy loading and modern format detection
• Oversized image warnings
• CSS background-image analysis
🛠️ TECHNOLOGY DETECTION
• Identify CMS, frameworks, libraries, analytics tools, CDNs and more
• Over 7,000 technology signatures in the database
• Version identification where available
• Design system extraction — colors, fonts, spacing
📈 GOOGLE SERVICES
• Detect analytics, tag management, ad services and other integrations
• Event monitoring and categorization
• Consent Mode v2 validation
• DataLayer inspector
🍪 TRACKERS & COOKIES
• Cookie identification against a database of 2,200+ known cookies
• Privacy categorization and consent management detection
• Storage analysis — localStorage, sessionStorage, IndexedDB
• Tracking pixel and beacon detection
♿ ACCESSIBILITY
• Automated WCAG 2.2 checks across 9 categories
• Contrast ratio checking with font-size awareness
• AI-powered fix suggestions you can paste into any AI assistant
🔐 SECURITY
• HTTPS validation and security headers analysis
• Cookie security flags audit
🌐 SITE ESSENTIALS
• Check for robots.txt, sitemap.xml, security.txt, llms.txt, ads.txt
• AI crawler access rules overview
• Favicon and web manifest detection
• Sitemap analyzer with CSV export
🌍 INTERNATIONALIZATION
• Hreflang tag validation
• Language declaration checking
📤 EXPORT
• Export reports to JSON, CSV, or PDF
• Comprehensive PDF reports with SEO score
✨ WHY UPER?
• Side panel — audit pages without leaving them
• Fast — instant analysis on page load
• Private — everything runs locally, zero data sent anywhere
• Free — no account, no subscription, no limits
• Lightweight — small package, fast install
• Dark and light theme support
What's New in 2.7.14:
- RSS/Atom Feed Detection — Finds feeds from page HTML and common paths (/feed, /rss.xml, /atom.xml). Shows type, title, and URL in Site Essentials
- Social Preview Fix — OG/Twitter image previews now load on sites with strict CORP headers
What's New in 2.7.13:
- llms.txt Detection & Validation — Detects llms.txt/llms-full.txt and validates against the spec
- llms.txt Generator — Generate llms.txt from sitemap data with language selector, smart filtering, and AI optimization prompt
- Sitemap Hreflang from HTML — Merges hreflang from page <head> with sitemap XML data
- Thumbnail CORP Fix — Fixed images not loading due to Content Security Policy blocking
What's New in 2.7.12:
- Sitemap AI Audit — One-click AI prompt with full audit: status breakdown, duplicates, content stats, and fix recommendations
- Sitemap Metadata — Extracts lastmod, priority, changefreq, images, videos, hreflang with new CSV columns
- Sitemap Redirects — Detects 301/302 redirects with final URL tracking
- Sitemap Tabbed Preview — Overview, Changes, and External Links tabs with charts and CSV export
- Sitemap PDF & Print — Save or print the full audit report from the preview page
- Sitemap Filter Sorting — Duplicates grouped together, length issues sorted by severity
- Sitemap Large Cache Fix — Sites with 4,000+ URLs no longer fail silently
- A11y HTML Context — AI suggestions include parent HTML for easier issue location
- A11y Accuracy — Fixed text-resize false positives, filtered third-party widgets
- Canonical Hash Fix — No false warnings when URL contains a hash fragment
- Page Stats — Full URLs with CSS truncation instead of cut-off filenames
What's New in 2.7.11:
• CLS text snippets fixed — Layout shift source previews
• Code cleanup — Removed duplicate code across modules, reducing codebase duplication to under 1%
• 30% smaller extensionTechnical
- Version
- 2.7.15
- Manifest
- V3
- Size
- 6.0MiB
- Min Chrome
- 88
- Languages
- 1
- Featured
- No
Metadata
- ID
- khhpbeckpphaoiemjdijhbfpjnendage
- Developer ID
- u474cd3a3751046e4f81265ea47bd2fce
- Developer Email
- [email protected]
- Created
- Jan 21, 2026
- Last Updated (Store)
- Apr 22, 2026
- Last Scraped
- Jun 10, 2026
- Website
- uper.pl
- Support URL
- https://uper.pl/en/
- Privacy Policy
- https://uper.pl/en/privacy-policy/
Data sourced from the Chrome Web Store · last verified Jun 10, 2026.