# Accessibility Checker Detect common WCAG 2.1 accessibility issues in HTML, fetched pages, or design images and return fix-ready guidance > Canonical page: https://elysiatools.com/en/tools/accessibility-checker - **Category:** Validation - **Keywords:** accessibility, wcag, contrast, alt text, keyboard, a11y ## Overview The Accessibility Checker helps developers and designers identify common WCAG 2.1 compliance issues before deployment. By analyzing raw HTML snippets, live web pages, or design mockups, it detects missing ARIA labels, poor color contrast, and keyboard navigation risks, providing actionable, fix-ready guidance to improve digital accessibility. ## Inputs - **HTML Input** (textarea) - **Page URL** (text): https://example.com - **Design Image** (file) - **WCAG Level** (select) ## When to use - Reviewing raw HTML snippets for missing alt text or empty button labels before committing code. - Scanning live web pages via URL to audit existing accessibility compliance. - Evaluating design mockups and images for potential color contrast risks prior to implementation. ## How it works - Paste your raw HTML, enter a live page URL, or upload a design mockup image. - Select your target compliance standard, such as WCAG AA or WCAG AAA. - The tool scans the input for structural, semantic, and visual accessibility violations. - Review the generated HTML report containing specific warnings and actionable fix recommendations. ## Use cases - Frontend developers validating component HTML for screen reader compatibility. - UI/UX designers checking color palettes in mockups for sufficient contrast ratios. - QA engineers running quick accessibility audits on staging URLs. ## Frequently asked questions ### What WCAG levels does this tool support? You can choose between WCAG AA and WCAG AAA compliance levels depending on your project requirements. ### Can I check accessibility from an image? Yes, you can upload design mockups (PNG, JPEG, WEBP, SVG) to detect potential color contrast issues before coding begins. ### Does it fix the HTML automatically? No, the tool generates an audit report with fix-ready guidance, but you must apply the changes to your code manually. ### What kind of HTML issues does it detect? It identifies common semantic issues like missing alt attributes, unlabeled form inputs, and empty interactive elements like buttons or links. ### Can I scan a live website? Yes, you can provide a page URL, and the tool will fetch and analyze the page for accessibility violations. ## Related tools - [Data URI Generator](https://elysiatools.com/en/tools/data-uri-generator): Convert files into Data URIs (Base64 or percent-encoded) for inlining images, fonts, and assets directly into HTML, CSS, or Markdown - [PDF Header/Footer Snippets](https://elysiatools.com/en/tools/pdf-header-footer-snippets): Convert HTML to PDF with reusable logo, title, and date snippets - [Image Watermark Opacity](https://elysiatools.com/en/tools/image-watermark-opacity): Add watermarks with custom opacity to images, supporting both text and image watermarks with advanced opacity controls - [Image Watermark Corner](https://elysiatools.com/en/tools/image-watermark-corner): Add corner watermarks to images with customizable positioning, size, opacity, and multiple corner options - [Image Watermark Diagonal](https://elysiatools.com/en/tools/image-watermark-diagonal): Add diagonal watermarks to images with customizable angle, size, opacity, and positioning across the image - [Image Watermark Image](https://elysiatools.com/en/tools/image-watermark-image): Add image watermarks to images with customizable position, size, opacity, and rotation - [Image Watermark Tile](https://elysiatools.com/en/tools/image-watermark-tile): Add tiled watermarks to images with customizable spacing, size, opacity, and pattern options - [SVG Favicon Generator](https://elysiatools.com/en/tools/svg-favicon-generator): Turn an SVG or raster logo into a complete favicon pack with ICO, PNG variants, Apple touch icon, and web manifest ## Samples - [Android Image Processing Java Samples](https://elysiatools.com/en/samples/android-image-processing-java): Android Java image processing examples including reading/saving images, scaling, and format conversion - [Android Image Processing Kotlin Samples](https://elysiatools.com/en/samples/android-image-processing-kotlin): Android Kotlin image processing examples including reading/saving images, scaling, and format conversion - [Web Image Processing Python Samples](https://elysiatools.com/en/samples/web-image-processing-python): Web Python image processing examples using PIL/Pillow including reading, saving, resizing, and format conversion - [Web Image Processing Rust Samples](https://elysiatools.com/en/samples/web-image-processing-rust): Web Rust image processing examples including image read/save, scaling, and format conversion ## Related content - [Web Accessibility Audit and Accessible Color Tools](https://elysiatools.com/en/hubs/web-accessibility-audits): Review WCAG issues, screen-reader order, contrast failures, color-vision risk, and accessible palette choices in one hub for website and UI accessibility workflows. - [Image Format Conversion and Animated Export Tools](https://elysiatools.com/en/hubs/image-convert): Compare image format converters for JPG, PNG, GIF, AVIF, WebP, TIFF, ICO, base64, and animation-friendly exports in one hub. - [Text Case, Encoding, and Normalization Conversion Tools](https://elysiatools.com/en/hubs/text-convert): Compare text case conversion, character-width conversion, encoding conversion, quoted-printable handling, and inline text normalization tools in one hub. - [Image Cleanup, Framing, and Batch Prep Tools](https://elysiatools.com/en/hubs/image-utility): Compare image cleanup, trimming, padding, framing, batch resize/compress, watermarking, and visual polish tools in one hub for asset preparation workflows.