DevLynx SEO
by sonofthematrix
$19
Instant SEO audit on any webpage — meta tags, headings, alt text, schema, page
score & AI recommendations. BYOK OpenAI.
Single purpose:
DevLynx SEO is a single-purpose developer and content tool: it analyzes the
on-page SEO of any webpage you visit, directly from the browser sidebar. It checks
meta tags, headings, images, Open Graph, canonical URLs, schema markup, robots
directives, and more. Free includes full scans plus a limited AI trial; Pro
(one-time $19) unlocks unlimited AI analysis and recommendations. Users bring
their own OpenAI API key (BYOK). The extension contacts the DevLynx feed for
licensing and trial enforcement.
Detailed description:
Instant SEO audit on any webpage — right from your browser sidebar.
DevLynx SEO lives in your browser's side panel. Open it on any page and get a full
SEO breakdown in seconds — without leaving the tab. No external dashboards, no
copy-pasting URLs.
KEY FEATURES
• Page title — length, keyword presence, score
• Meta description — length, quality check
• Heading structure — H1/H2/H3 hierarchy, order issues
• Images — missing alt text, total count
• Open Graph tags — og:title, og:description, og:image
• Canonical URL — present or missing
• Robots meta — noindex detection
• Schema.org / structured data — type detection, invalid JSON flagged
• Hreflang — alternate language links, bad values flagged
• Links — internal vs external count
• Viewport — mobile-friendly check
• Overall SEO score — 0–100, calculated from all checks
• AI Analysis (Pro) — prioritized recommendations and quick wins
• AI Generator (Pro) — generate improved title, meta description, og:description
FREE VS PRO
Free: full on-page SEO scan on any webpage + 10 AI-powered analyses to try it out.
Pro: unlimited AI analyses and content generation. One-time purchase at $19 USD
with lifetime updates (via Gumroad).
SETUP
For AI features, add your OpenAI API key in the extension options (BYOK). Your key
stays local in your browser — never sent to our servers. AI usage is billed
directly to your OpenAI account.
PRIVACY (SUMMARY)
We do not sell browsing history or run ad profiling. Your OpenAI API key is stored
only in this browser on your device. AI requests go directly to OpenAI with your
BYOK key. The extension contacts our hosted feed for licensing and trial
enforcement only. Details: https://devlynx.dev/privacy
PERMISSIONS
Broad access (<all_urls>) is required so the SEO scanner can analyze any webpage
you open it on.
SUPPORT
mailto:support@devlynx.dev
Permission justification:
DevLynx SEO is a developer and SEO tool that analyzes the DOM and meta structure
of pages the user opens it on.
Host access to all URLs is required because users run SEO audits on any website —
their own projects, client sites, competitor pages, staging environments, etc.
Host access is used only to:
• read page DOM structure (title, meta, headings, images, links, schema,
canonical)
• inject the content script that collects SEO data from the active tab
We do not use this access to harvest browsing history for advertising. No page
content is stored. Network traffic goes to: OpenAI (BYOK AI calls), our hosted
feed API for license/trial enforcement, and Gumroad for license verification.
Category: Developer Tools (or Productivity)
Support URL: mailto:support@devlynx.dev