YASP - Yet Another SEO Plugin
by a.mashkovtcev5.0
3 reviews
29
users
Published
October 26, 2025
Screenshots
Description
YASP — a professional on-page SEO analyzer with PageSpeed Insights
YASP is a lightweight and convenient extension for quick page audits right in the browser. It analyzes key on-page factors, highlights problem areas, checks hreflang, collects microdata (JSON-LD/Microdata/OG/Twitter), helps quickly open Wayback/WHOIS, and integrates with Google PageSpeed Insights (Lighthouse: Performance, Accessibility, Best Practices, SEO).
What it does
SEO summary for the current tab
Title, Description, Keywords (if any), length, and quality status.
Canonical URL (rel="canonical") and validation.
Robots meta directives and X-Robots-Tag header (noindex/nofollow, etc.).
Page language (<html lang>) and Publisher/OG Site Name (if any).
Word count on a page (text density assessment).
Heading structure
Number of H1…H6.
Quick copying of a list of headings.
Heading highlighting on a live page (on/off).
Links
Collecting all links, identifying external/internal ones.
Detecting rel="nofollow".
Highlighting links (on/off) and copying the list to the clipboard.
Images
List of images, basic statistics.
Detecting missing/empty alt tags.
Indexing and infrastructure
Quick links to robots.txt and sitemap.xml of the current site.
Indexability assessment based on meta tags/headers.
Hreflang audit
Collecting all <link rel="alternate" hreflang="…"> tags.
Checking the HTTP status of final URLs (using a HEAD request).
Attempt to determine a backlink to the current page: a content script loads the HTML for the target locale and looks for hreflang pointing back to the current URL and language.
Microdata
Open Graph and Twitter Card from meta tags.
JSON-LD: parsing scripts <script type="application/ld+json"> — processing both arrays and single objects.
Microdata (itemscope, itemtype, itemprop) with property tree construction, including nested structures.
PageSpeed Insights
Run a Lighthouse audit for the current URL (via API).
Displays total Performance / Accessibility / Best Practices / SEO scores (0–100) and a brief status.
SEO Practitioner Tools (1-Click)
site:domain.com — instant site search query in Google.
site:domain.com inurl:… — URL filter for the site.
Wayback Machine — open the site's history.
WHOIS — quickly view domain data.
Detects the CMS on the page (WordPress, Joomla, Drupal, Shopify, Wix, etc.) by meta tags/resource paths/generators. Attempts to extract the version (if available).
Noindex/nofollow highlighting
Search for <!--noindex-->…<!--/noindex--> blocks and visual highlighting.
Separate highlighting for rel="nofollow".
Site JavaScript switcher
On-the-fly enables/disables JavaScript for the current domain via chrome.contentSettings.javascript (with status indication).
Amenities
Dark/light theme.
Localizations: EN / RU / UK (auto-detection based on browser language).
Settings (language, theme) are saved in chrome.storage.
Why this is convenient for SEO specialists
Instant overview of key factors without switching to third-party services.
Live on-page highlighting instead of "dry" reports.
Quick shortcuts (site:, Wayback, WHOIS).
Hreflang checking with a backlink test is a rare feature.
Built-in Lighthouse checking via PageSpeed Insights.
🧠 Keyword Density & Content Analysis
The new Keyword Density Analyzer module calculates the frequency and distribution of keywords across the visible text of a page.
It helps identify over-optimized or under-used phrases, supporting natural SEO balance and content quality evaluation.
Features:
Extraction and counting of all significant words on the page (ignores HTML tags, stop-words, and scripts).
Exporting Keywords Data to csv.
Multilingual stop-word filtering (EN / RU / UK / DE / ES / GR / IT).
Per-word frequency statistics and density percentage (%).
Visualization of the most frequent words via interactive table or highlight overlay.
Helps detect keyword stuffing and content imbalance.
Ideal for copywriters and on-page SEO professionals auditing keyword usage.
🧩 What’s New
Version 1.8.2 introduces:
Character Counter — instantly count characters (with and without spaces) and words from any selected text right from the context menu.
Quick Shortcuts — access the main SEO tools (header highlighting, link detection, Google search helpers, WHOIS, Web Archive) faster with keyboard shortcuts in the context menu.
Add to Chrome
Quick Info
- Version
- 1.8.2
- Size
- 407KiB
- Price
- Free
- Type
- Extension
Categories
Languages
Englishрусскийукраїнська
