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Curated list · 13 tools

Best Free SEO Tools

Free SEO tools: SERP snippet preview, schema markup generator, FAQ schema, meta tag generator, headline analyzer, keyword density checker, and more.

Curated April 2026
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On-page SEO is mostly about getting the same ten details right on every page: title length, meta description, canonical, schema, image alt text, internal links. These thirteen tools cover those details without the $99/mo Semrush-adjacent spyglass. Use them as you write, not as a post-launch audit.

The full list

  1. 01 · SERP Snippet Preview

    SERP Snippet Preview

    See exactly how your page will appear in Google search results — truncated title, description, URL — before you publish.

  2. 02 · Meta Tag Generator

    Meta Tag Generator

    Generate a full set of meta tags (title, description, OG, Twitter, canonical) with one form. Paste into your <head>.

  3. 03 · Schema Markup Generator

    Schema Markup Generator

    Build JSON-LD schema for Article, Product, LocalBusiness, FAQ, Event, and more — the rich-result coverage most blogs skip.

  4. 04 · FAQ Schema Generator

    FAQ Schema Generator

    Turn a Q&A block into FAQPage JSON-LD. Google often shows a 'people also ask' style expansion for these in mobile results.

  5. 05 · Open Graph Generator

    Open Graph Generator

    Build the og:title, og:description, og:image tags that control how your page looks when shared on Facebook, LinkedIn, or Slack.

  6. 06 · Robots.txt Generator

    Robots.txt Generator

    Generate a sensible robots.txt with common disallows for admin, staging, and tracking parameters — plus a sitemap pointer.

  7. 07 · Title Tag Length Checker

    Title Tag Length Checker

    Check whether your <title> is under Google's ~60-character display limit, in pixels not characters (accounts for wide letters).

  8. 08 · Meta Description Length Checker

    Meta Description Length Checker

    Check meta description pixel-width against Google's truncation point. Better than character counts because 'm' and 'i' are not the same width.

  9. 09 · Headline Analyzer

    Headline Analyzer

    Score a blog headline on word balance, length, and power-word usage — an emotion-based heuristic that correlates with CTR.

  10. 10 · Keyword Density Checker

    Keyword Density Checker

    Count how often a keyword appears in your page vs. the total word count, to avoid over-stuffing (or under-targeting).

  11. 11 · UTM Builder

    UTM Builder

    Build properly formatted UTM links so Analytics actually attributes traffic to the right campaign and medium.

  12. 12 · Alt Text Helper

    Alt Text Helper

    Draft alt text for an image using a structured prompt — descriptive, short, and not stuffed with the focus keyword.

  13. 13 · Readability Score Checker

    Readability Score Checker

    Check Flesch reading ease on your post. Google doesn't use this directly, but lower grade level usually wins on mobile.

On-page SEO as a 10-minute checklist

Before you publish any post, spend ten minutes running through this tool list. Meta Tag Generator for the <head>, SERP Snippet Preview to check how it reads in results, Schema Markup Generator for Article JSON-LD, Keyword Density Checker so you're between 0.5 and 2 percent on the focus term, and Headline Analyzer for the <h1>. Skipping this costs you CTR for the lifetime of the page.

Schema is the highest-leverage five-minute task

Article schema, FAQ schema, and BreadcrumbList schema together unlock rich-result eligibility on basically any content page. Run your page through the Schema Markup Generator and FAQ Schema Generator — then test it at search.google.com/test/rich-results. If it passes, you've just given Google three more surfaces to show your page.

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