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Free tools for your site.

Performance, SEO, privacy and accessibility checks. Results in seconds, no sign-up.

01. Full site check

Five fronts in one check.

Check my site

  • Accessibility (LBI / NBR 17225)

    Images without alt, unlabeled forms, unnamed links and buttons, language, zoom.

    Check my site

  • Privacy (LGPD)

    Trackers without consent tool, cookies before acceptance, policy link.

    Check my site

  • SSL/HTTPS and headers

    Certificate validity, HTTPS redirect, HSTS, CSP, mixed content.

    Check my site

  • Technical SEO

    robots.txt, sitemap, canonical, title, meta description, structured data.

    Check my site

  • Server response

    TTFB, compression, HTML weight and render-blocking scripts.

    Check my site

02. Speed and Core Web Vitals

Speed measured the way Google does.

  • Core Web Vitals checker

    LCP, INP and CLS from real Chrome visitors, for one URL or up to 10 at once.

    Test URLs

  • LCP finder

    The page's largest element and where the delay is: server, discovery, download or rendering.

    Find the LCP

  • CLS finder

    Which elements move during the load and the likely cause.

    Find the CLS

  • INP debugger

    What keeps the processor busy and delays the response to clicks.

    Debug INP

  • Compression, HTTP/3 and hints

    gzip, Brotli and Zstandard, HTTP version, Early Hints and preload mistakes.

    Test

  • HAR file analyzer

    Weight, errors, slow and uncompressed requests, read in your browser.

    Open a HAR

  • Site speed ROI calculator

    How much the store gains per month with a faster LCP, with your numbers.

    Calculate

  • Brazilian e-commerce benchmark

    Phone LCP, INP and CLS of large Brazilian stores, by segment, updated monthly.

    See the benchmark

03. SEO and AI search

Get found by Google and by AI.

  • Robots.txt validator

    Syntax, sitemap and which search and AI bots may crawl.

    Validate

  • XML sitemap validator

    Format, limits, dates, other domains and a sample of the URLs.

    Validate

  • Schema markup validator

    Schema.org types and the properties Google asks for rich results.

    Validate

  • llms.txt generator

    A draft llms.txt so ChatGPT, Claude and Perplexity understand the site.

    Generate

  • Redirect checker

    Where URLs end up, chains, loops and redirect errors.

    Check URL

04. Privacy (LGPD and GDPR)

Cookies and consent before the first click.

  • Cookie and consent checker

    Cookies set before any click, trackers, consent tool and policy.

    Check

05. Accessibility

Color contrast to the WCAG standard.

Contrast checker

Large sample text
Normal sample text: this is what readers see.
4.47:1
  • Normal text — AA (4.5:1): fail
  • Large text — AA (3:1): pass
  • Normal text — AAA (7:1): fail
  • Large text — AAA (4.5:1): fail
  • Icons and field borders (3:1): pass
Nearest text color passing AA: #767676 (4.54:1)
Or keep the text and use the background: #060606 (4.52:1)

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