What is AltText?
AltText is an AI-powered alt text generator that produces accurate, keyword-aware image descriptions. These can be used for websites, CMS platforms, and ecommerce stores. The tool analyzes each image and outputs descriptive alt text in over 130 languages, addressing the gap between visual content and what search engines and AI systems can actually read. The alt generator crafts descriptions aligned to page intent, product attributes, brand naming conventions, and SEO keywords.It runs through a WordPress plugin, a Shopify app, and a developer API. Browser extensions, no-code automation connectors, and a web interface are also available. A free site scanner audits up to 25 pages for missing alt text.
Features & Benefits
- Alt Text Generation — analyze images and produce accurate, detailed descriptions that reflect visual content, product attributes, and page context.
- SEO Keyword Integration — incorporate custom SEO keywords into generated descriptions to target specific search queries and improve image search visibility.
- Multilingual Output — generate alt text in 130+ languages to support international audiences and global SEO coverage.
- Bulk Generation — process entire image libraries, CMS entries, and product catalogs in a single operation to cover large-scale backlogs.
- Page Intent Alignment — produce descriptions calibrated to the context of the page, including product categories, brand names, SKUs, locations, and services.
- AI Visibility Optimization — generate descriptions structured for retrieval by AI assistants like ChatGPT, Claude, and Perplexity, making image content parsable in AI-driven search.
- Website Accessibility Analyzer — crawl up to 25 pages for free to identify images missing alt text, show page-by-page breakdowns, and score overall SEO and AI visibility impact.
- Quality Checks — detect missing, duplicated, or vague alt text across a site’s image inventory.
- CSV Import — import image data directly from CSV files for batch processing outside a connected platform.
- InstantAlt — deploy a single JavaScript snippet to automate alt text generation across any website without a native plugin.
- MCP Server — connect via Model Context Protocol for programmatic alt text generation within AI development workflows.
- Platform Integrations — connect to CMS platforms, ecommerce systems, media libraries, and no-code automation tools through native integrations and pre-built connectors.
- Developer API — integrate alt text generation directly into custom applications via a REST API.
- Browser Extensions — generate alt text for any image on any web page directly from the Chrome or Firefox browser.
Real-World Applications
An ecommerce store carrying hundreds of product SKUs may have most of its images tagged with generic filenames or left blank. AltText can process the entire product catalog in bulk, embedding product names, categories, and SEO keywords into each description. This makes product images readable by AI shopping assistants and search crawlers that would otherwise treat those images as invisible content.
A web design agency managing multiple client sites can use the free site scanner to audit each property before launch or during an SEO review. The page-by-page breakdown identifies exactly which images lack descriptions and scores the overall impact on search visibility. The WordPress plugin then handles ongoing generation automatically as new images get added to any site in the portfolio.
A developer building a content-heavy application might integrate the REST API to automate alt text creation at the point of image upload. Every image ingested by the application gets a description written to the database immediately, without requiring a manual editorial step or a separate workflow later.
A headless CMS operation managing editorial content across markets can connect AltText to Contentful or DatoCMS and apply multilingual alt text generation across all image assets. Descriptions get written in the languages that match each locale, keeping accessibility and SEO consistent across every regional deployment without duplicating manual effort.
