AI Image Alt Text Generator.

Image alt text information, guidelines and best practices.

Image alt text (alternative text) is a short written description of an image. It serves two key purposes:

• Accessibility: Screen readers use alt text to help visually impaired users understand the content of an image.

• SEO: Search engines use alt text to understand and index images correctly, improving page rankings in search results and Google Images.

Using high-quality, descriptive alt text ensures your website is both accessible and optimised for search engines. Our AI-powered alt text generator makes this process simple and efficient.

Accessibility – Making images usable for everyone.

Why is alt text important for accessibility? Alt text allows screen reader users to engage with visual content. Without it, they miss out on crucial information. It’s an essential part of WCAG (Web Content Accessibility Guidelines) compliance and helps businesses create inclusive online experiences.

Best practices for writing accessible alt text:

• Keep it short, usually 1-2 sentences. Don’t overthink it.
• Consider key elements of why you chose this image, instead of describing every little detail.
• No need to say “image of” or “picture of.”
• But, do say if it’s a logo, illustration, painting, or cartoon.
• Don’t duplicate text that’s adjacent in the document or website.
• End the alt text sentence with a period.

Source – Harvard University​

Example:

Weak alt text: alt="dog"
Strong alt text: alt="A golden retriever playing with a red ball in a park."

SEO – How alt text optimises your site.

Alt text is more than just an accessibility feature – it’s an important SEO factor. Search engines can’t always “see” images, so they use alt text to gain context, understand and index them.

Benefits of SEO-friendly alt text:

• Helps images rank in image searches, driving additional traffic.
• Strengthens on-page SEO by providing relevant context for search algorithms.
• Enhances user experience, leading to lower bounce rates and higher engagement.

SEO best practices for alt text:

• Include relevant keywords, but only if they naturally fit (e.g., “Screenshot of an AI-powered alt text generator for WordPress”).
• Keep it relevant – avoid keyword stuffing & don’t include keywords for the sake of it, just describe the image.
• Ensure different images have unique alt text to prevent duplication issues.

Example:

Weak alt text: alt="AI tool"
Strong alt text: alt="AI image description generator creating alt text for a product photo."

How to use our AI-powered alt text generator.

Generating alt text manually can be time-consuming. That’s where our AI image description generator comes in – a powerful tool designed to save time and improve accessibility and SEO effortlessly.

How it works:

1. Upload an image – Drag and drop or click to select your file
2. Click ‘Generate Alt Text’ – The AI model analyses the image and creates a description.
3. Copy the generated text – Use it in your website’s alt attribute.

Key features:

• Supports jpg, jpeg, gif, png, and webp (up to 10MB).

• AI-generated descriptions are optimised for accessibility and SEO.

• Free daily usage limit of 5 image generations per user.

The technology behind our AI image description generator

Our AI-powered alt text generator uses the latest in machine learning to create meaningful, high-quality image descriptions.

How does the AI work?

This tool uses a Large Language Model (LLM) to analyse the image’s content, recognising objects, scenes, and context.

It then generates an alt text description that is concise, accurate, and useful.

The AI is trained to follow accessibility guidelines, ensuring descriptions are screen-reader friendly.

We’ve integrated an optimised LLM to deliver the most accurate and user-friendly alt text possible. Whether you’re optimising for SEO or improving accessibility, this tool ensures your images work harder for your website.