Free SEO tools

Check JavaScript SEO, generate and validate sitemaps, write llms.txt, and work through a SaaS SEO checklist. Technical SEO without a paid suite.

SEO tools

  • SaaS SEO Checklist for Founders

    Free SaaS SEO checklist for founders. Pick your launch stage, tick crawl/product/authority tasks, and download an AI agent brief. Not a generic 20-skill dump.

    Build my SEO plan →
    Interactive

    6

    Tracks

    Focus Founders

  • JavaScript SEO Checker

    Free SPA shell checker. Paste your website to see if crawlers get real HTML or an empty JavaScript shell. No signup.

    Check my site →
    Checked

    SPA

    Verdict

    Crawlable Fail

  • Free Sitemap & Robots.txt Validator

    Free sitemap and robots.txt validator. Checks both files exist, the sitemap is well-formed, and robots.txt isn't silently blocking your own pages. No signup.

    Validate →
    Checked

    5/7

    Checks passed

    Status Fix conflicts

  • Free XML Sitemap Generator

    Free XML sitemap generator. Paste a domain, we discover public URLs, and you download sitemap.xml to host at the root. No signup.

    Generate sitemap →
    Generated

    24

    URLs in sitemap

    Status Ready to host

  • Free llms.txt Generator

    Free llms.txt generator. Paste a URL and download llms.txt, llms-full.txt, and llms-developers.txt for AI crawlers. No signup.

    Generate llms.txt →
    Generated

    3

    Files generated

    Status Ready to host

Frequently asked questions

Where should a new SaaS start with SEO?
Work through the SaaS SEO checklist first: indexable pages, titles, sitemap, internal links, and a few comparison pages. Then build backlinks with the Backlinks tools.
Can Google index a JavaScript SPA?
Sometimes, but many SPAs ship an empty HTML shell. The SPA shell checker tells you whether title, meta, and main copy exist in the first HTML response.
How do I generate a sitemap.xml for free?
Paste your domain into the sitemap generator. It discovers public pages and builds an XML sitemap you can host at /sitemap.xml. Then validate it with the sitemap and robots checker.
What is llms.txt?
A markdown file at /llms.txt that tells AI crawlers what your site is. The generator also writes llms-full.txt and llms-developers.txt from public pages.

More Mini App categories

  • Landing page tools

    Score a homepage, compare it with rivals, or clone a competitor page. Built for founders shipping a first conversion page.

  • Backlink tools

    Check domain authority, see who links to a site, and find broken links. Moz-style DA and Ahrefs-style backlink questions, answered without a paid suite.

  • Social OG tools

    See the title, description, and image X, LinkedIn, Facebook, and Slack will pull from your URL, and fix broken share cards before launch day.

  • Reddit tools

    Find subreddits, time posts, and measure share of voice. Built for product research and launch, not subreddit moderation.

  • X tools

    Scan the open For You weights, recap a month of posts, and draw who an account replies with. No X login.

  • Utilities

    Name a product, mock a Stripe-style MRR chart, view HTML, or turn a column into a comma list. No upload, no watermark.

  • Launch planner

    Pick the day, map the run-up on a calendar, and tick off the Product Hunt or Uneed checklist. Planning tools, not upvote pods.

  • Launch helpers

    Write the tagline, product description, launch posts, and cold DMs for launch week. Copy helpers you edit, not autopilot.

  • SaaS calculators

    Runway, CAC, LTV, churn, MRR, valuation, market size, and dilution. Startup finance, not aviation runway charts.

  • Sponsorship calculators

    Model newsletter ad cost against CAC and LTV before you book a slot. For founder newsletters, not YouTube sponsorship rates.

All Mini Apps →

llms.txt