Keep Optimized: On-Page SEO Checker

One-click on-page SEO audit: score, meta tags, schema, Core Web Vitals, SERP preview, AI crawler access, links and images. Free.

Keep Optimized is a one-click, on-page SEO checker for Chrome. Open any page, click the icon, and get a full on-page SEO audit right in your browser: an SEO score out of 100, prioritized fixes, and a click-to-highlight inspector that jumps you straight to the element that needs work. No account. No sign-up. The audit runs on the page in front of you, and the results are clear enough to act on without opening five other tools. Built for SEO specialists, content writers, marketers, and site owners who want answers fast. ONE CLICK, FULL PAGE AUDIT - SEO score out of 100 in six bars you can click through: On-page, Technical, Schema, Images, Links and Social. The weights add up to exactly 100, so a 100 means every scored check passed - Change since your last scan of the same page - Prioritized recommendations sorted by impact, not a flat checklist. Open any issue for the fix and its impact, then use Go to source to scroll to the element and outline it on the live page - Highlight internal, external, broken and nofollow links, or link-quality problems, right on the page, with a bar that shows what is on and a Clear button - Open it as a toolbar popup or dock it in Chrome's side panel and keep it open while you browse - Light, dark and automatic themes - Re-checks automatically when the page changes (or switch to manual mode) META TAGS, TITLES AND SERP PREVIEW - Title and meta description length plus pixel-width checks, so you catch truncation before Google does - Desktop and mobile SERP preview with pixel truncation and a breadcrumb path - Open Graph and X (Twitter) card analysis for clean social sharing - Canonical, meta robots, charset and hreflang validation HEADINGS AND READABILITY - Full H1 to H6 hierarchy with skipped-level and multiple-H1 checks - Empty, hidden and below-the-fold heading detection - Word count and readability (sentence length, grade level) for the main content of the page, without navigation, header, footer and sidebars. Switch to a full-page count in Settings - Language-aware readability: no English-only score on pages in other languages - Inline search across every heading on the page STRUCTURED DATA (SCHEMA) VALIDATION - Parses and validates JSON-LD per Schema.org type, including articles, products, FAQs and breadcrumbs - Flags missing required and recommended fields for each type - Suggests schema types your page looks eligible for but is missing - Microdata and RDFa detection, shown in a progressive tree view CRAWLABILITY AND AI CRAWLER ACCESS - robots.txt check for the page you are on: is this URL allowed, and which rule decided it - Sitemap check: is the URL listed - AI crawler access: what robots.txt says for 12 AI crawlers from OpenAI, Anthropic, Perplexity, Google and others, grouped by what they do: AI search, fetches for a user, and model training - llms.txt detection - Google index check (site: search) that runs only when you click Check indexation TECHNICAL SEO THAT MOST EXTENSIONS SKIP - Rendered vs raw HTML diff: see what Googlebot gets before JavaScript runs versus what the user sees, so client-side rendering gaps stop hiding from you - Response headers inspector: X-Robots-Tag, cache controls, security headers and HTTP status - Content freshness: published and modified dates pulled from meta tags, JSON-LD and the Last-Modified header, with stale-content flags CORE WEB VITALS - LCP, CLS, INP, FCP and TTFB captured from the real page load - LCP element and likely LCP image called out, with fetchpriority and lazy-loading warnings that protect your largest paint IMAGES - Missing or empty alt text - Missing width and height (layout-shift / CLS risk) - Oversized images, missing srcset, and modern-format (WebP / AVIF) adoption rate - Above-the-fold lazy-loading warning on your likely LCP image LINKS - Internal, external, broken and nofollow classification - On-demand HTTP link check that reports reachable, redirecting, broken and not-checked links with their status codes (up to 20 links per run) - Generic anchor text, very short anchors, unsafe target=_blank, mixed-content and javascript: link checks MOBILE AND ACCESSIBILITY - Viewport and responsive width checks - Count of tap targets under 24 px (WCAG 2.2), shown for information and not scored - lang attribute, ARIA roles, form labels and keyboard-focus checks that overlap with SEO and UX KEYWORD PLACEMENT - Enter a target keyword and see exactly where it appears: title, H1, H2, H3, URL slug, meta description, first paragraph and image alt - Placement coverage score and prominence in the content - Keyword frequency is shown for reference only, not treated as a ranking signal EXPORT AND SHARE - Copy the full report as Markdown to paste into a doc, a ticket, or an LLM - Export as JSON, CSV, Markdown or a standalone HTML report - Local history of recently audited pages, with search and pinning PRIVATE BY DESIGN - No accounts, no analytics, no telemetry - Keep Optimized has no backend server of its own, so it never sends your audit data to us - The only network requests are to the page you are auditing (raw HTML and response headers), that site's robots.txt, sitemap and llms.txt, link checks you trigger, and the Google index check when you click it - The index check opens a Google search for the page's URL in a background tab and closes it when it has the result - Built on Manifest V3 WHY THE PERMISSIONS - activeTab and scripting: read and analyze the page you are actively auditing - storage: save your settings, history and the latest analysis locally - sidePanel: open the audit in Chrome's side panel - host access: fetch the raw server HTML, response headers, robots.txt, sitemap and llms.txt for the same site you are auditing, check the links you ask it to check, and read the Google result page for the index check WHO IT IS FOR - SEO specialists running quick on-page audits across many pages - Content writers and editors checking a draft before it ships - Developers validating schema, response headers and JavaScript rendering - Site owners who want a clear, plain-language SEO check FREQUENTLY ASKED QUESTIONS Q: Is Keep Optimized free? A: Yes. Keep Optimized is free, with no account, sign-up or trial. Q: What does Keep Optimized check? A: It runs a full on-page SEO audit: title and meta tags, headings, structured data (schema), Core Web Vitals, internal and external links, images, mobile viewport, canonical, robots and hreflang, readability, content freshness, and robots.txt, sitemap and AI crawler access. Q: Do I need an account or a login? A: No. Click the icon on any page and the audit runs in your browser. Q: Is my data private? A: Keep Optimized has no backend of its own and never sends your audit data to us. The only network requests are to the page you are auditing and its robots.txt, sitemap and llms.txt, link checks you trigger, and the Google index check when you click it. Q: Can it tell me whether AI crawlers can access my page? A: It reads your robots.txt and shows whether 12 AI crawlers, such as GPTBot and ClaudeBot, are allowed to fetch the page, and which rule decides it. It also checks for an llms.txt file. It does not test your server or firewall, so a bot can still be blocked there. Q: Why does Check indexation open a Google tab? A: Google only returns search results to a real browser tab. The extension opens the site: search in a background tab, reads the result, and closes the tab. It runs only when you click the button. If Google shows a CAPTCHA, the result is "Couldn't confirm", not "Not indexed". Q: Does it validate schema and structured data? A: Yes. It parses JSON-LD and checks required and recommended fields per Schema.org type, and suggests schema types your page is missing. Q: Can I export or share the report? A: Yes. Copy it as Markdown to paste into a doc, a ticket or an LLM, or export JSON, CSV, Markdown or a standalone HTML report. Q: Does it work in the Chrome side panel? A: Yes. Open the audit as a toolbar popup or dock it in Chrome's side panel and keep it open while you browse. Q: Who is Keep Optimized for? A: SEO specialists, content writers, marketers and developers who want a fast, private on-page SEO check. Keep Optimized is a free Chrome SEO extension for fast, private, on-page SEO audits and technical SEO checks. Install it, pin it, and check any page in one click. Questions or feedback: k-o.pro