How long should alt text be?

Recommended length is 50-125 characters. Short enough to be concise for screen readers, long enough to be descriptive and include relevant keywords. The tool generates alt text within this window.

Should decorative images have alt text?

No, purely decorative images (backgrounds, dividers, icons without meaning) should have empty alt text (alt="") so screen readers skip them. The tool helps you identify which images are decorative vs meaningful.

Does alt text affect SEO?

Yes, alt text is one of the most important factors for ranking in Google Images. Google uses alt text to understand what the image shows and match it with keywords. Good alt text can also improve the ranking of the page the image is on.

Can the tool analyze images directly?

Yes, you can upload images and the AI analyzes the content visually to generate descriptive alt text. You can also describe the image manually if you prefer.

Toolsscout

Image Alt Text

What it does

Creates descriptive and SEO-friendly alt text for images based on context and content. Follows WCAG guidelines.

Your images lack alt text — and it hurts both SEO, accessibility and user experience

Alt text is the invisible text that describes images for search engines and screen readers. Without good alt text your images are invisible to Google Images (which accounts for 20-30% of all web traffic), inaccessible to visually impaired users (which violates WCAG requirements), and useless when images fail to load. Yet over 50% of images on the web lack alt text, and those that have it often use generic descriptions like "image" or the filename.

Missing alt text makes images invisible to Google — without descriptive alt text Google cannot understand what the image shows, so it does not rank in Google Images search
Accessibility requirements are violated — WCAG 2.1 requires all meaningful images to have descriptive alt text, and missing alt text can lead to lawsuits under discrimination legislation
Generic alt text is almost as bad as none — "product image" or "team.jpg" gives neither search engines nor screen readers useful information about what the image actually shows
Manual alt text writing is time-consuming — writing good, descriptive alt text for hundreds of images on a website takes hours and is a task most people postpone

AI-generated alt text that is descriptive, SEO-optimized and WCAG-compliant — for each image in seconds

Image Alt Text generates descriptive alt text for images based on the image content and page context. The tool follows WCAG 2.1 guidelines for accessibility and integrates relevant keywords for SEO — all within the recommended length of 125 characters. You describe the image or upload it, and get finished alt text ready to use.

WCAG-compliant: all generated alt text follows WCAG 2.1 guidelines — descriptive, concise and meaningful for screen reader users
SEO-optimized: integrates relevant keywords naturally into the alt text to increase visibility in Google Images without seeming spammy or unnatural
Context-aware: takes into account the page content and the image function — a product image alt text is different from an illustration or a decorative image
Optimal length: keeps alt text within recommended 125 characters — long enough to be descriptive, short enough to not overload screen readers

Features

Image description input: describe the image with a few words or upload the image — the AI generates complete, descriptive alt text based on the content
Keyword integration: provide target keywords and the tool integrates them naturally into the alt text — to increase visibility in Google Images without sacrificing accessibility
Image type adaptation: choose between product image, illustration, infographic, team photo, screenshot or decorative image — the tool adapts the style accordingly
Bulk generation: generate alt text for multiple images simultaneously — perfect for websites with hundreds of images lacking alt text

How it works

Describe the image with a few words or upload the image — e.g. "team photo of 5 people in front of the office" or "red bicycle parked by a wall"
Provide any target keywords and choose image type (product, illustration, photo) to adapt the alt text to the context
Get finished alt text within 125 characters — descriptive, SEO-optimized and WCAG-compliant — ready to paste into the HTML

Use cases

Web developers and content producers who need to add alt text to hundreds of images on an existing website to meet WCAG requirements and improve SEO
E-commerce stores with thousands of product images that need descriptive, keyword-rich alt text to rank in Google Images and increase organic traffic
Marketers publishing blog posts with images who need quick, quality-assured alt text that both improves accessibility and SEO

Why use Image Alt Text?

Alt text is one of the most underrated SEO opportunities. Google Images accounts for 20-30% of all web traffic, but most websites ignore image SEO completely. With good alt text on all images you can capture this traffic — and Image Alt Text makes it possible to do it efficiently for hundreds of images.

Accessibility is not just a legal requirement — it is good business. Over 250 million people globally have visual impairments and use screen readers. Without alt text your content is inaccessible to them. Additionally, the number of lawsuits related to web accessibility increases every year — good alt text protects you legally.

Manual alt text writing is one of those tasks everyone knows they should do but never finds time for. The tool makes it so fast and easy that there is no longer an excuse to postpone it — generate alt text for 100 images in minutes instead of hours.

FAQ

How long should alt text be?: Recommended length is 50-125 characters. Short enough to be concise for screen readers, long enough to be descriptive and include relevant keywords. The tool generates alt text within this window.
Should decorative images have alt text?: No, purely decorative images (backgrounds, dividers, icons without meaning) should have empty alt text (alt="") so screen readers skip them. The tool helps you identify which images are decorative vs meaningful.
Does alt text affect SEO?: Yes, alt text is one of the most important factors for ranking in Google Images. Google uses alt text to understand what the image shows and match it with keywords. Good alt text can also improve the ranking of the page the image is on.
Can the tool analyze images directly?: Yes, you can upload images and the AI analyzes the content visually to generate descriptive alt text. You can also describe the image manually if you prefer.

Try Image Alt Text free