Alternative text (ALT tags) is a fundamental part of web accessibility (a11y). It ensures that screen readers can convey image content to users with visual impairments, improving their browsing experience. Writing effective ALT text requires a balance between clarity, conciseness, and context. Here’s how you can do it right:
1. Be Descriptive but Concise
ALT text should accurately describe the image while being brief. Screen readers often cut off descriptions after about 125 characters, so keep it succinct yet informative.
Example:
- Bad:
img123.jpg - Good:
Golden retriever puppy playing with a blue ball in the park.
2. Provide Context Relevant to the Content
The ALT text should reflect the image’s purpose in the content. If an image is decorative or purely aesthetic, it can have an empty ALT attribute (alt=""), preventing unnecessary interruptions for screen reader users.
Example:
- If the image is a stock photo accompanying a blog about teamwork, ALT text like “Diverse team collaborating around a table” provides relevance.
3. Avoid Using “Image of” or “Picture of”
Screen readers already announce images as such, so repeating “An image of” is redundant.
Example:
- Instead of: “An image of a sunset over the ocean”
- Use: “Vibrant orange sunset over the ocean with crashing waves”
4. Include Text in Images (If Necessary)
If an image contains important text, ensure the ALT text includes it. For infographics or charts, consider supplementing with a more detailed explanation elsewhere on the page.
Example:
- Image of a button labeled “Sign Up” should have ALT text:
“Sign Up button”
5. Use Keywords Thoughtfully
ALT text contributes to SEO but should not be stuffed with keywords. Use natural language to maintain usability.
Example:
- Instead of: “SEO website optimization digital marketing analytics chart”
- Use: “Analytics dashboard displaying SEO traffic trends”
6. Write for Functionality
For functional images, such as buttons or icons, describe their action rather than their appearance.
Example:
- Instead of: “Magnifying glass icon”
- Use: “Search”
Final Thoughts
Well-written ALT text enhances accessibility, SEO, and user experience. By following these best practices, you ensure that all users, regardless of their abilities, can engage with your content effectively. Prioritizing accessibility benefits everyone—so start crafting meaningful ALT tags today! If you need any assistant or support please reach out to us today. Let’s build a better, more inclusive web together.
Share: