Pulse SEO
Free website crawler. No installation. No account. No data leaving your machine.
Pulse SEO is a browser-based site crawler that runs entirely on your device. Enter any URL and it crawls your site the way a search engine woud, reporting on page titles, meta descriptions, headings, reponse codes, images, canonical tags, hreflang attributes, structured data, and internal linking. Everything exports to CSV.
Pulse SEO is a full technical-SEO crawler that runs entirely in the browser, with no installation, no account and no data ever leaving the user’s machine. Point it at any URL and it works through the site the way a search engine would, mapping internal and external links, response codes, page titles, meta descriptions, headings, canonical tags, meta directives, hreflang attributes, structured data, sitemaps and even JavaScript-rendered content. Every view can be filtered by indexability or rendering type, searched, and compared against a previous crawl to track what changed, then exported straight to CSV.
Beyond the crawl itself, Pulse SEO connects to Google Search Console, GA4, PageSpeed Insights and backlink data, pulling performance and authority signals into the same interface as the technical audit. That combination makes it closer to a full audit suite than a single-purpose checker, free and accessible to anyone with nothing to install and nothing to pay for.
On-Page Analysis
Crawls every page and reports on titles, meta descriptions, H1 and H2 tags, word count, and response codes. Spot thin content, duplicate titles, and missing metadata in seconds.
Image and Link Audit
Finds missing alt text, images without dimensions, and lazy-loading issues. Maps every internal and external link to its source page so you know exactly where to fix broken references.
Structured Data and Hreflang
Detects JSON-LD, Microdata, and RDFa markup across your site. Surfaces hreflang implementation issues for multi-language sites. No guesswork about what search engines actually see.
Canonical and Directive Checks
Identifies canonical mismatches, noindex tags, and conflicting directives before they cost you rankings. Every issue links to the affected URL for fast resolution.
Free and Private
Pulse SEO runs entirely in your browser using WebAssembly. Your crawl data never touches a server. No signup, no subscription, no usage limits. We built it for our own work and decided to share it.
FAQs
What is Pulse SEO?
Pulse SEO is a free, browser-based website crawler that performs a technical SEO audit directly in your browser. It checks page titles, meta descriptions, headings, images, structured data, canonicals, hreflang, and internal links across your entire site. Results are organised into tabs and exportable as CSV.
Is Pulse SEO really free?
Yes. There is no paid tier, no feature gating, and no account required. Open the page, enter your URL, and start crawling. The tool runs on your device, so there are no server costs to recover.
Does my data leave my browser?
No. Pulse SEO runs entirely client-side using WebAssembly and an in-browser SQLite database. Your crawl data stays in your browser and is never sent to any server. When you close the tab, the data is gone unless you export it first.
Try Pulse SEO
Enter any URL and get a full technical SEO audit in minutes. No signup, no download, no data leaves your browser.