Alt Text Viewer

Alt Text Viewer is a privacy-focused Chrome extension that helps accessibility auditors, web developers, designers, QA testers, content managers, and website owners quickly inspect image alternative text directly on a webpage. Instead of opening developer tools, checking image elements one by one, or reviewing source code manually, Alt Text Viewer scans the images on the current page and overlays each image’s `alt` text directly on top of the image as a semi-transparent caption. This makes it much faster to see whether visual content has meaningful descriptions for screen readers. Alternative text is an important part of web accessibility. When an image communicates information, users who rely on screen readers need a text equivalent that describes the image’s purpose or content. Without useful alt text, important visual information may be unavailable to people with visual impairments. Alt Text Viewer helps teams review this quickly by making invisible accessibility metadata visible on the page itself. The extension works entirely inside Chrome and does not use any external API. No data is ever transmitted to third-party servers. Image scanning, alt text detection, caption generation, and overlays are handled locally in your browser using browser-based functionality. The extension does not upload webpage content, image data, alt text, URLs, screenshots, browsing history, audit results, personal information, or usage activity. Everything happens on your own device, making it a private and secure tool for accessibility review. Privacy is especially important for accessibility and development workflows. Auditors and developers often review internal websites, staging environments, client pages, unpublished designs, admin portals, ecommerce catalogs, dashboards, intranet pages, and password-protected content. Alt Text Viewer is designed so that this information stays local. It does not send page contents to the cloud, does not use remote image analysis, does not rely on third-party accessibility APIs, and does not transmit audit data externally. Using Alt Text Viewer is simple. After installing the extension, you can activate it from the Chrome toolbar while viewing a webpage. The extension scans the page for images and displays each image’s alt text as a semi-transparent caption overlay. If an image has descriptive alt text, you can read it immediately in context. If an image has missing, empty, unclear, repeated, or inappropriate alt text, it becomes much easier to notice during review. This visual overlay approach is useful because alt text quality depends on context. A description that seems acceptable in isolation may not be useful when seen next to surrounding text, headings, buttons, or product information. By showing alt text directly on the image, Alt Text Viewer helps reviewers judge whether the description matches the image’s role on the page. This saves time compared with reviewing a separate list of image attributes. Accessibility auditors can use the extension during manual audits, WCAG reviews, design QA, content checks, and remediation projects. It can help them quickly identify images that need better descriptions, images that should have empty alt attributes because they are decorative, and images whose alt text duplicates nearby content unnecessarily. The extension is not a full automated accessibility scanner, but it is a practical inspection tool for human review. Web developers can use Alt Text Viewer while building or updating websites. During development, it is easy to forget alt attributes, especially on pages with many images, icons, cards, banners, thumbnails, logos, illustrations, and product photos. By activating the overlay, developers can quickly verify whether image elements include expected descriptions before shipping a page. This can help catch issues earlier in the development process. Designers and content teams can also benefit. Many accessibility problems begin during content creation, not just coding. If a page includes marketing graphics, editorial images, product imagery, hero banners, infographics, or instructional screenshots, the content team may need to provide appropriate descriptions. Alt Text Viewer helps non-technical reviewers see what screen reader users may receive without needing to inspect HTML manually. QA testers can use the extension as part of release checks. Before launching a new page or feature, testers can activate Alt Text Viewer and scan the page visually for missing or poor image descriptions. This is especially useful for ecommerce sites, educational platforms, news sites, documentation portals, portfolios, and product pages where images carry meaningful information. The extension can also support accessibility education. For teams learning about alt text, seeing descriptions overlaid directly on images can make the concept easier to understand. It shows that alt text is not abstract metadata; it is the text alternative that may be presented to users who cannot see the image. This can help teams write better descriptions and make accessibility a more visible part of the design and development process. Alt Text Viewer is intentionally lightweight and focused. It does not try to replace complete accessibility testing platforms, screen reader testing, keyboard testing, semantic HTML review, or expert audits. Instead, it provides one clear function: make image alt text visible in context. Because it does not use external APIs or third-party servers, it can work quickly and privately without account setup, uploads, cloud scans, or remote processing. The extension is useful across many types of websites, including blogs, ecommerce pages, landing pages, documentation sites, educational pages, dashboards, portfolios, image galleries, internal tools, and web apps. It is especially valuable on pages with many images, where checking each element manually would be slow. Alt Text Viewer is ideal for anyone who wants a fast, pr…