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AI Image Alt Text Generator

Generate WCAG-compliant alt text for up to 10 images at once with keyword integration and accessibility scores.

Bulk alt text for SEO and accessibility

Describe your images

Enter one image description per line (up to 10). Add page context and a target keyword for SEO-integrated alt text.

0/10 images

Tip: Be specific. "Person typing on laptop" is better than "photo". Up to 10 images per run.

Why Alt Text Matters for Both SEO and Accessibility

Alt text is the alternative text attribute on an image (the alt attribute in HTML). It serves two audiences. The first is screen reader users, who rely on alt text to understand what an image shows. The second is search engines, which use alt text to understand image content for image search ranking and to add context to the surrounding page.

When alt text is missing or written badly, both audiences suffer. Screen reader users hear nothing or hear the file name. Google has no idea what the image is about. Both your accessibility score and your image SEO suffer. The W3C estimates that 30 percent of all images on the web have no alt text at all, and another 25 percent have alt text that is unhelpful (like 'image1.jpg' or 'photo').

This tool fixes the problem at scale. Paste up to 10 image descriptions, add page context and a target keyword, and get back optimized alt text, keyword-integrated versions, accessibility scores, and WCAG compliance notes for each image.

The 125-Character Rule and Why It Exists

Most screen readers (JAWS, NVDA, VoiceOver) cut off alt text at around 125 characters. If your alt text is longer, the user hears the first 125 characters and the rest is dropped. This is why every alt text generated by this tool is under 125 characters.

For complex images (charts, diagrams, infographics), 125 characters is not enough to fully describe the content. The right approach is to write a concise alt under 125 characters and provide a longer description in the surrounding page text or in a linked detail page. This is known as the 'short alt + long description' pattern.

This tool will note in the rationale when an image is complex enough to need a longer description, and will keep the alt text itself within the screen reader limit.

Keyword Integration Without Keyword Stuffing

Alt text is one of the SEO signals Google uses for image search ranking, but keyword stuffing in alt text is a known anti-pattern that can hurt rankings and accessibility. The right approach is to write accurate, descriptive alt text first, then weave in your target keyword only if it fits naturally.

For example, if your image shows a sales pipeline dashboard and your target keyword is 'B2B sales pipeline,' a good alt text is 'B2B sales pipeline dashboard showing stages from lead to closed-won deal.' A bad alt text is 'B2B sales pipeline B2B sales pipeline software B2B sales pipeline tool dashboard.'

This tool generates two versions for every image: a base alt text optimized purely for accessibility, and a keyword-integrated version that weaves the keyword in naturally. You can use whichever fits better, or use the base version if the keyword does not fit.

How E-Commerce Alt Text Differs From Blog Alt Text

Alt text style depends on the page context. E-commerce alt text needs to describe the product clearly enough that a screen reader user could decide whether to buy it. That means including product type, color, key features, and use case. 'Red leather running shoes with white soles, size 10' is better than 'red shoes.'

Blog alt text needs to support the article topic. If the article is about cold email response rates, the alt text should reference the data or concept being shown, not just the visual elements. 'Chart showing cold email response rates by industry, with SaaS at 12 percent' is better than 'bar chart.'

Documentation alt text needs to describe UI elements precisely, often referencing button names, menu locations, and field labels. 'Settings screen with the email notifications toggle in the off position' is better than 'screenshot of settings page.'

This tool adapts the alt text style to the content type you select, so you get the right voice for the right page.

Building an Alt Text Process for Your Whole Site

Most websites have hundreds or thousands of images. Adding alt text retroactively can feel like a multi-month project. The fastest path forward is a tiered rollout: start with the highest-traffic pages, then product and category pages, then blog posts, then everything else.

For new content, build alt text into your content brief template so writers and designers add it at creation time, not as a fix-up step. For existing content, run a Lighthouse or axe accessibility audit to find images with missing alt and prioritize them by traffic.

This tool is built for both flows. For new content, paste your image descriptions and page context to get alt text instantly. For existing content, run batches of 10 images at a time to systematically work through your backlog.

Frequently Asked Questions

How long should alt text be?

Keep alt text under 125 characters. Most screen readers cut off alt text at around 125 characters, so anything longer gets truncated. For complex images that need more description, add a longer description in the surrounding page text or a linked detail page.

Should alt text include the target keyword?

Only if the keyword fits naturally and accurately describes the image. Forcing a keyword into alt text is considered keyword stuffing and can hurt both SEO and accessibility. This tool generates a base accessible version and a keyword-integrated version so you can choose whichever fits.

What is the difference between alt text and a caption?

Alt text is read by screen readers and is invisible to sighted users. Captions are visible to everyone and usually provide context, attribution, or a brief explanation. Both can exist on the same image and serve different audiences. Alt text should describe the image; captions should add context.

What should I do for decorative images?

Decorative images (background patterns, dividers, purely visual flourishes) should have empty alt text (alt=""). This tells screen readers to skip the image. Adding alt text to decorative images creates noise and reduces the experience for screen reader users.

Does alt text help with image SEO?

Yes. Alt text is one of the signals Google uses to rank images in Google Image Search and to understand the topic of the surrounding page. Good alt text can drive significant referral traffic from image search, especially for ecommerce, blog, and editorial content.

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