12 free SEO tools

Every one of these runs entirely in your browser. Your data is never uploaded, never transmitted and never stored, so you can disconnect from the internet after the page loads and they still work.

Search Console Analyzer

Twenty analyses on your own Search Console export, concentration, brand split, your own position-to-CTR curve, striking distance, query clustering, traffic forecasting, volatility, weekday seasonality and a per-page diagnosis. Ends with the single highest-value thing to do next.

SERP Audit

Give it a URL and it fetches the page server-side, so it can check the redirect chain, response headers, robots.txt and time to first byte alongside 32 checks on the HTML itself. Ends with a ranked fix list, a pixel-accurate snippet preview, and an alignment map showing whether your title, description, H1 and slug agree.

Schema Generator

Generate WebApplication, Product, Article, HowTo, FAQPage, Organization and BreadcrumbList markup from a form. Absolute URLs enforced, breadcrumbs emitted top-level, and a rating block that will not appear without a real review count.

SERP Preview

See exactly how your title and description truncate on desktop and mobile, measured in pixels, which is how truncation actually works, rather than by counting characters like most tools.

Position Value Calculator

Enter impressions, current position and a target, and get the traffic delta, priced on a real measured CTR curve rather than an industry average. The calculation that tells you whether a quarter of link building is worth it.

Schema Inventory

Crawls your site and records the structured data on every page, then reports it as an inventory rather than a per-page verdict. Finds blocks that silently fail to parse, pages carrying nothing, and the types that stop partway through a template. Exports to Excel.

Internal Link Graph

Crawls your site and maps every internal link, separating body-copy links from navigation, because a menu link is a template repeating itself, not one page vouching for another. Finds editorial orphans, pages buried past three clicks, dead ends, and anchor text that describes nothing.

OG Image Generator

Design a 1200×630 link preview and watch it render as it will actually appear in X, LinkedIn, Slack, WhatsApp, Discord, iMessage, Telegram, Facebook and Google Discover, each with its own crop, its own truncation and its own display size. Ten presets, full typography control, batch generation, and nothing ever uploaded.

Noise or Signal

Drop two Search Console exports, or one and the date you shipped, and find out whether the change is bigger than the noise this metric makes anyway. Runs a Welch t-test against the period’s own variance, checks the windows for uneven weekdays, and refuses to call causation.

Programmatic Set Analyzer

Groups your Search Console pages by URL shape and prints the distribution inside each set: how many pages carry the clicks, how many earn nothing, and which of the dead ones still get impressions. The number every programmatic case study leaves out.

Crawler View

Fetches a URL server-side and shows exactly what a crawler gets before JavaScript executes: the visible words, the headings, the internal links, the structured data, and the signals that a page is really an empty shell waiting to be assembled in the browser.

Log File Analyzer

Reads your access log in the browser and reports what search crawlers really did: which URLs they fetched, how much of the crawl went to redirects, errors and assets, and which requests carried a crawler user agent from an IP that does not belong to that crawler.

Guides

100 free guides on getting found in search, each backed by numbers from one complete dataset.