Image Title: What It Is, How It’s Different from Alt Text, and Whether It Matters for SEO

By the ImageSEO Team. Updated September 2026. ~9 min read.

People routinely confuse the image title attribute with alt text, caption, and filename — four different things that do four different jobs. Here’s what the image title actually is, what Google’s own documentation says about it, why the HTML standard warns against relying on it, and when it’s worth writing one at all.

The short answer

• The image title attribute (title="" on an <img>) is a hover tooltip. Mobile and keyboard users usually never see it.
• Google lists alt text as the most important image attribute. It mentions “image titles” only as part of the page content it reads, and has never said the title attribute carries ranking weight.
• Accessibility: the HTML standard says relying on the title attribute is “currently discouraged”.
• WordPress stopped adding the title attribute to inserted images back in version 3.5, for accessibility reasons.
• What to do: get alt text, filenames, and captions right first. Add a title attribute only when it says something useful that isn’t said anywhere else.

What is an image title?

The image title is the title="" HTML attribute you can add to an <img> tag. It shows as a tooltip when a desktop user hovers their mouse over the image. That’s its primary function — it’s a hover-only UX feature.

Example markup:

<img src="nike-pegasus-41.jpg"
     alt="Nike Pegasus 41 running shoes, black colorway, side view"
     title="Nike Pegasus 41 (2026 release)">

The confusing part is that “image title” is used for three different things. When you read advice about image titles, check which one the author means:

Only the third one is regular page content that every visitor and every crawler reads. That difference matters when you read what Google says.

Image title vs alt text vs caption vs filename

A simple way to remember it: alt text replaces the image, a caption explains the image, a filename identifies the image, and a title adds an optional side note on hover.

Does the image title affect SEO? What Google actually says

Google’s image SEO documentation (Image SEO best practices, last updated March 2026) is the primary source here. Three sentences from it matter:

• On alt text: “The most important attribute when it comes to providing more metadata for an image is the alt text.”
• On page content: “Google extracts information about the subject matter of the image from the content of the page, including captions and image titles.”
• On filenames: “the filename can give Google very light clues about the subject matter of the image.”

Notice what the second sentence does and doesn’t say. Google reads “image titles” as part of the content of the page, next to captions. It does not say the HTML title attribute is a ranking factor, and nowhere in that document does Google give the title attribute the weight it gives to alt text. The safest reading: a visible title or caption near your image is useful context; a hidden hover tooltip is, at best, a weak extra hint.

Google’s John Mueller was asked about this directly back in 2016. His answer about the title attribute was: “maybe. Test & tell?” — not a confirmation that it helps. Ten years later, Google’s documentation still points you to alt text, captions, filenames, and page context first.

So the practical answer is the same as before: the image title attribute is not where your image SEO wins are. If your alt text and filenames are weak, fixing those will do far more than writing tooltips.

Where the real image SEO gaps are

To see what most sites actually get wrong, we crawled the homepages of the 10,000 most-visited websites (Tranco list) in 2026. The problems are not tooltips:

• 11.3% of 306,634 images had no alt attribute at all, and 37.1% of sites shipped at least one image without one.
• Only 46.4% of images had a genuinely descriptive filename; the rest were names like IMG_4821.jpg, hashes, numbers, or dimensions such as 1250x668.
• Only 105 of 5,408 homepages (about 1 in 52) got all six basic image checks right.

Method limits: homepages only, a single crawl date, static HTML without JavaScript rendering. Because this is the most-visited slice of the web, the typical site is likely to do worse, not better. The full method and data are in our alt text study.

The accessibility problem with image titles

The HTML standard (WHATWG) is unusually direct about the title attribute: “Relying on the title attribute is currently discouraged as many user agents do not expose the attribute in an accessible manner as required by this specification (e.g., requiring a pointing device such as a mouse to cause a tooltip to appear, which excludes keyboard-only users and touch-only users, such as anyone with a modern phone or tablet).”

In practice that creates three problems:

• Most visitors never see it. On phones and tablets there is no hover, so anything you put only in the title attribute is invisible to them.
• Keyboard users miss it too. Tooltips usually need a mouse.
• Duplicate announcements. Some screen reader setups read both alt and title. If they say the same thing, visually impaired users hear it twice. If you set a title, make sure it adds something different from the alt text — or leave it blank.

The rule that follows: never put essential information only in the title attribute. If it matters, it belongs in the alt text (if it describes the image) or in visible text such as a caption.

Should you use image titles?

Only if you have something to say that isn’t already in the alt text or the page body. Rule of thumb:

• If you’d put the same text in alt and title, leave title empty.
• If you have a useful side note (photographer, model release info, lineage), title is a valid place.
• If you’re copying the page’s title tag into every image title — stop. That’s spammy and has been since 2015.

Some concrete examples:

Image title in WordPress

WordPress has a field called "Title" in the media library. Confusingly, this is the image post title inside WordPress, not the HTML title attribute. By default, WordPress does not output the title attribute on images on the front end. You’d have to explicitly add it via a hook or theme template.

That default is deliberate. Until WordPress 3.5 (released in 2012), the editor added a title attribute to every inserted image. It was removed in Trac ticket #18984, because the title attribute isn’t needed for accessibility and can cause problems for assistive technology. The media library Title field stayed, but its job now is to help you find files in the library.

What each WordPress field is for:

• Alternative Text — becomes the alt attribute. The one that matters most.
• Title — internal name in the media library. Not output on images by default.
• Caption — visible text under the image when your theme or block shows it.
• Description — shown on the attachment page, if your site uses attachment pages.
• File URL / filename — set at upload; changing it later means renaming the file and updating links.

If you have a real reason to output a title attribute on featured images (for example a photo credit on a portfolio), a small filter is enough. This one reuses the media library Title field for images output with wp_get_attachment_image(), which many themes use for featured images:

add_filter( 'wp_get_attachment_image_attributes', function ( $attr, $attachment ) {
    $title = get_the_title( $attachment->ID );
    // Only add a title when it says something different from the alt text.
    if ( $title && ( empty( $attr['alt'] ) || $title !== $attr['alt'] ) ) {
        $attr['title'] = $title;
    }
    return $attr;
}, 10, 2 );

Images inside post content are stored as HTML in the post, so this filter doesn’t change them; edit those per image in the block editor instead.

Our recommendation: focus on alt text and filenames. Filenames and alt text are where the SEO wins are. Image titles are the third tier.

Image title checklist

• Every informative image has descriptive alt text; decorative images have alt="".
• Filenames are short, descriptive, lowercase, and hyphenated.
• Important context (credits, dates, product names) is in a visible caption or nearby text, not only in a tooltip.
• Title attributes, if any, never repeat the alt text word for word.
• No keyword lists or copied page titles in title attributes.
• You’ve checked a few pages on a phone: nothing essential depends on hovering.

FAQ

Is image title the same as alt text?

No. Alt text is a textual alternative for the image (read by screen readers and search engines). The image title is a hover tooltip. They’re different HTML attributes with different purposes.

Should every image have a title attribute?

No. Leave the title attribute blank unless you have information that isn’t already in the alt text, caption, or surrounding content. Duplicating the alt text in the title can confuse screen readers.

Does Google read the image title attribute?

Google reads the content of your page, and its documentation says that includes “captions and image titles”. It has never described the title attribute as a meaningful ranking signal, and it names alt text as the most important image attribute. Filenames, alt text, captions, and surrounding content are the signals to get right first.

Does the image title help in Google Images?

There is no evidence that it moves rankings on its own. Google Images ranking is driven by alt text, filename, page relevance, and image quality. A visible title or caption near the image is more useful than a hidden tooltip.

Is the image title attribute bad for accessibility?

It isn’t harmful by itself, but you can’t rely on it. The HTML standard discourages relying on it because keyboard-only and touch-only users usually can’t see tooltips. Never put information only in the title attribute.

What’s the difference between the image title and the caption in WordPress?

The Title field is an internal name in your media library and isn’t shown on the page by default. The Caption is visible text under the image. For SEO and for readers, a good caption is worth far more than a title.