Skip to main content

Free SEO Tools

SEO Tooling Without the Sign-Up Wall

Most “free SEO tool” sites are paywall demonstrations dressed as utilities: three audits a week, a results email, and a contact form before the actual data shows up. The SEO Suite is the opposite. Thirty tools that run end-to-end, return real findings, and never ask for an email. Some run entirely in the browser; others fetch a single URL through our own server with strict timeouts and size caps. None of them charge, queue you, or upsell across screens.

This is the same toolkit we have built up across the audits, technical SEO retainers, and one-off forensic jobs we run for clients. The page audit aggregates what we usually pull together by hand into a single report (title, meta, canonical, robots, schema, social cards, headings, images, links, performance) and applies the same severity weighting we use internally. The generators (schema, robots, sitemap, hreflang, redirect rules) emit production-ready output, not toy snippets. The analysers (heading outline, alt-text audit, link audit, AEO scorer) are the pre-flight checks we run before anything ships. The fetch-based auditors (redirect chain, HTTP headers, SSL, mixed content, image weight) cover the questions that come up during a deploy or after a migration goes wrong.

We have intentionally not built backlink, rank-tracking, or keyword-volume tools. Those require paid third-party APIs and pricing them honestly would mean charging for them. The boundary of this suite is “everything we can do well without a paid data feed”. Inside that boundary, the suite is broader than most of the paid auditors we have used in client work. The trade-off is clear and deliberate: we cover what we can cover well, free, forever, and we say no to the parts that would force a sign-up.

For audit volume, when you are running this on more than a handful of pages, the WP Beacon Plugin is the right next step. It runs the same audit logic across every page of a WordPress site automatically and notifies on regressions. The free suite is for spot checks; the paid plugin is for ongoing coverage.

What We Cover

The suite has thirty tools, organised into three categories so the picker stays usable. Each tool has its own page targeting its own keyword cluster; the prose underneath the interactive widget is the substance, not garnish. It is one of three toolkits in the Free Tools collection, alongside the Design Suite and the Developer Suite.

Audit (fetch URL → report)

  • Page SEO Audit: the marquee. Enter a URL, get a full single-page report covering title, description, canonical, robots meta, hreflang, OG/TC, schema, headings, alt text, links, word count, status, and timing. Severity-weighted score with a prioritised findings list.
  • Redirect Chain Tracer: follow every hop a URL takes; flags long chains and HTTPS→HTTP downgrades.
  • HTTP Headers Inspector: every response header, grouped by purpose (SEO, security, caching, CORS, server, compression).
  • Robots.txt Tester: fetch a domain’s robots.txt, parse rules per UA, test arbitrary paths.
  • Sitemap Inspector: fetch and follow sitemap indexes, list every URL with lastmod / changefreq / priority.
  • TTFB & Server Response Time: median time-to-first-byte across multiple samples; the median is the headline number.
  • Mobile vs Desktop Diff: fetch with mobile and desktop user-agents, diff the output. Catches cloaking and m-dot content gaps.
  • Broken Link Checker: extract every link on a page and HEAD-check up to fifty in one go.
  • SSL Certificate Checker: issuer, expiry, subject alt names, signature algorithm.
  • Mixed Content Audit: fetch an HTTPS URL and list every http:// resource it loads.
  • Mobile-Friendly Test: viewport meta, font sizes, scaling rules, plus a 375px iframe preview. The replacement for Google’s retired tool.
  • Image Weight Audit: every image on the page with format, dimensions, lazy-loading attribute, and HTTP status.
  • DNS Lookup: A, AAAA, MX, NS, TXT, CNAME, and SOA records for any host.

Generate (form → asset)

Analyse (paste content → analysis)

  • SERP Preview: title, URL, description rendered as Google desktop and mobile cards with pixel-accurate truncation.
  • Schema Validator: paste JSON-LD or full HTML; required and recommended fields checked per @type.
  • Open Graph Debugger: paste page HTML, extract every OG and Twitter Card tag, render the preview cards.
  • Heading Outline Checker: paste HTML, see the H1–H6 tree with skipped-level and multi-H1 warnings.
  • Alt Text Audit: every <img> listed with status flags (missing, empty, spammy, too short, too long, good).
  • Internal Link Audit: every link with anchor text, rel, target, and internal/external classification.
  • Word Count: words, sentences, paragraphs, characters, average sentence length, reading time.
  • Keyword Density Checker: top single-word, two-gram, and three-gram phrases by frequency.
  • AEO Content Scorer: score content for AI-extractability across atomic paragraphs, definitive tone, Q&A signal, list structure, citations, and heading density.

Where the Free Suite Ends and Paid Tooling Begins

The suite covers everything we can deliver well without a paid data feed. Beyond that boundary live three categories of work the free tools cannot reasonably do.

The first is link and rank intelligence: backlink profiles, domain authority, keyword search volumes, SERP rank tracking. These all require licensed data feeds (Ahrefs, Moz, SEMrush, DataForSEO) where the cost is per-query. Building free tools on top of those would mean charging, which we are not interested in. If you need that data, the major paid platforms do it well.

The second is continuous monitoring. The page audit here checks one URL on demand. Running the same audit across every page of a site, every visit, with regressions flagged the moment they happen: that is what the WP Beacon Plugin does. The free suite is the manual spot check; the plugin is the always-on watch.

The third is rendered-page analysis. Several tools here read the HTML the server returns. JavaScript-rendered content (anything heavy with React, Vue, or Next.js client-side rendering) is partially invisible to that approach: the tool sees what the bot sees, which is usually less than the user does. For those audits, headless-browser tooling is needed; that is where the systems we build and the deeper service engagements pick up.

Where to Start

If you are running an audit on a single page, the Page SEO Audit is the right entry point. It covers most of what the other audit tools do individually, and the report points you at the specific tools where you need to look closer. If you are building a new page or rebuilding an existing one, start with the Meta Tag Generator and the JSON-LD Schema Generator: those produce the markup that defines how the page presents in search and social. If you are migrating a site or troubleshooting an indexing issue, the Redirect Chain Tracer, Robots.txt Tester, and Sitemap Inspector are the three diagnostic tools you will reach for first.

If your concern is AI search visibility (being cited in ChatGPT, Claude, and Perplexity answers), the AEO Content Scorer is the unique tool in this suite. It is also the one most other free SEO toolkits do not have yet. Background on how search and AI extraction work is in the Knowledge Center.

Looking for Something That’s Not Here?

If a tool you reach for regularly is not in the suite, tell us. We add to the suites as we identify high-quality additions that fit the “browser-only or thin-server-fetch, no paid data feed” boundary. Every addition has to pay its own way as a useful, independent tool.