Free Accessibility & SEO Tools

Free Accessibility & SEO Tools — WCAG Audit & Spam Checker | Seobility
100% Free · WCAG 2.1 Compliance Check

Free Accessibility & SEO
Audit Tools

Check WCAG accessibility compliance, detect ADA violations, and audit your spam score — fix issues that hurt both users with disabilities and your Google rankings.

2Audit Tools
WCAG2.1 AA Checked
🚦Spam Score
PDFExport Ready
WCAG A Level A — Minimum ⚠️ Basic requirement
WCAG AAA Level AAA — Highest 🏆 Gold standard
ADA US Legal Standard ⚖️ WCAG AA required
EN 301 EU Standard 🇪🇺 WCAG AA required
📋 Table of Contents

    Website Accessibility Audit Tool

    Check your website against WCAG 2.1 accessibility standards — find and fix violations before they hurt users and rankings.

    Tool 1 · WCAG Audit
    Accessibility Audit — WCAG 2.1 Compliance Checker

    Scans any webpage against WCAG 2.1 Level A and AA standards and reports all violations. Checks: missing image alt text, insufficient color contrast ratios (minimum 4.5:1 for normal text), missing form labels, keyboard navigation issues, missing ARIA landmarks, videos without captions, and skip navigation links. Each issue is categorized by severity — Critical, Major, or Minor — with clear fix instructions. Export full accessibility report as PDF.

    FREE Plugin 3
    Free Accessibility Audit Tool Proby Zubair Naeem · Tech4SEO
    No API · WCAG · Free

    Check Any Website's Accessibility

    Checks H1, Images, Links, Forms, ARIA, meta tags, readability & contrast. Balanced score out of 100.

    Spam Score Checker

    Check your website’s spam score — a high spam score signals toxic backlinks or spammy patterns that can trigger Google penalties.

    🚦
    Tool 2 · Spam Detection
    Spam Score Checker — Penalty Risk Analysis

    Analyzes your domain against 27 spam signals used by Moz and Google to identify potentially problematic websites. Checks: backlink quality patterns, thin content signals, over-optimized anchor text, low-quality link sources, and domain-level spam indicators. A spam score above 30% is high risk. Above 60% is critical and requires immediate link disavowal action. Shows exactly which spam factors are triggering your score.

    FREE Plugin 3
    🔍
    Spam Score Checkerby Zubair Naeem · Tech4SEO
    Free · No API · Instant

    Check Website Spam Score

    Enter domains or URLs (one per line). We analyze TLD, domain structure, keywords & more. Max 10 URLs at once.

    Built with ❤️ by Zubair Naeem · Tech4SEO · Free Spam Checker · No API Required

    Audit Accessibility & Spam in 3 Steps

    No account. No API key. Instant results.

    1

    Enter Your URL

    Paste any webpage URL into the accessibility or spam checker above.

    2

    Get Full Audit

    WCAG violations and spam signals are identified and prioritized instantly.

    3

    Fix & Re-Test

    Apply fixes, disavow toxic links, then re-run to confirm improvements.

    Accessibility & SEO Best Practices

    Accessibility and SEO work together — fix these issues and win on both fronts.

    🖼️

    Alt Text on Every Image

    Alt text is required for both WCAG compliance and Google image SEO. Every image must have descriptive alt text — except purely decorative images which use alt=””.

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    4.5:1 Color Contrast Ratio

    WCAG AA requires 4.5:1 contrast ratio for normal text and 3:1 for large text. Low contrast fails both accessibility and readability — which increases bounce rate and hurts SEO.

    ⌨️

    Full Keyboard Navigation

    All interactive elements must be reachable and operable via keyboard alone. Google’s crawlers also navigate sites similarly to keyboard users — good keyboard support = better crawlability.

    📋

    Proper Heading Structure

    Use H1 → H2 → H3 in logical order. Screen readers rely on heading structure to navigate pages — the same structure Google uses to understand content hierarchy.

    🚦

    Keep Spam Score Under 30%

    Audit your backlink profile quarterly. Disavow toxic links from link farms, PBNs, or irrelevant directories using Google Search Console’s disavow tool.

    📝

    Label All Form Fields

    Every form input needs a visible label or ARIA label. Unlabeled forms fail WCAG and confuse users — high form abandonment signals poor UX to Google.

    Accessibility is one piece — use these for a full site health check.

    FAQs About Accessibility & SEO

    Yes. Accessibility and SEO share many best practices. Alt text on images helps both screen readers and Google understand image content. Proper heading structure (H1, H2, H3) improves both crawlability and accessibility. Fast load times and mobile-friendliness benefit both users with disabilities and search engine rankings. Google’s Core Web Vitals also include usability factors tied to accessibility.
    WCAG (Web Content Accessibility Guidelines) is the international standard for web accessibility. There are three levels: A (minimum), AA (recommended), and AAA (highest). Most websites should target WCAG 2.1 Level AA — this is also the legal requirement in the US (ADA), UK (Equality Act), and EU (EN 301 549).
    Spam score estimates how likely a website is to be penalized by Google based on patterns common to spammy sites. A high spam score (above 30%) signals low-quality backlinks, thin content, or other patterns Google associates with spam — which can result in ranking penalties or manual actions.
    The most common accessibility failures are: missing image alt text, insufficient color contrast ratios, missing form labels, no keyboard navigation support, missing skip navigation links, videos without captions, and PDFs without text accessibility. Our free accessibility audit tool checks all of these automatically.
    Yes, all 74 tools on Tech4SEO are completely free. No account, no API key, and no usage limits — ever.

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