The Difference Between Alt Text, Title, and Caption (2026 Guide)

By the ImageSEO Team. ~5 min read.

One of the most common questions we get: “what’s the difference between alt text, the title attribute, and the figcaption?” They all look like places to put words next to an image, but they do very different things — for users, for Google, and for AI search engines.

The 30-second table

Alt text — the one that matters most

Alt text is the alt attribute on an <img> tag. It’s the description a machine reads when it can’t see the image. This is the single most important piece of image metadata for SEO in 2026, because every major search engine (Google, Bing, Google Lens) and every major AI (ChatGPT, Claude, Perplexity) reads it directly.

Write alt text as if you’re describing the image to someone on the phone — short, specific, natural. “Red leather handbag on a marble table” beats “handbag” every time.

Title attribute — the one that barely matters

The title attribute creates a tooltip on hover. Sighted mouse users see it. Touch users never see it. Screen readers mostly ignore it. Google gives it near-zero weight for ranking.

In 2026, the title attribute is basically obsolete for SEO. Don’t bother filling it in. If you want to add useful hover information for users, a <figcaption> or inline text works better.

Figcaption — the visible caption

The <figcaption> element is the visible caption that sits under or next to an image. Sighted users see it, screen readers announce it after the image, and Google uses it as context when ranking the image.

Rule: alt text describes what the image shows. Figcaption describes why it matters on this page — credit, context, a one-line insight. Don’t duplicate the alt text.

Practical example

<figure>
  <img src="red-leather-handbag-marble.jpg"
       alt="Red leather handbag on marble table">
  <figcaption>Autumn 2026 collection. Photo by Jane Doe.</figcaption>
</figure>

• Filename: semantic, hyphen-separated
• Alt text: describes what’s in the image
• Caption: context (collection + credit)
• No title attribute — intentionally

The 2026 best-practice order

1. Rename the file to something semantic (helps Google Lens)
2. Write natural alt text (helps Google, AI, screen readers)
3. Add a figcaption if the context matters (helps sighted users)
4. Skip the title attribute (doesn’t help anyone)

Automating this across a whole WordPress site is exactly what ImageSEO for WordPress does — AI-written alt text, semantic filenames, and optional AI captions, deployed in minutes.

Related reading: The complete alt text guide, Image SEO in 2026.