Do Image Links Pass SEO Value?

Yes. An image wrapped in an anchor tag passes link value the same way a text link does. The difference is anchor text: with no words to read, Google uses the image's alt attribute in its place. An image link with empty alt text still passes authority — it just tells search engines nothing about what's on the other end.

What Google actually says

This isn't inference. Google's image SEO best practices state that when an image is used as a link, the alt text is treated similarly to the anchor text of a text link.

So these two are close to equivalent in Google's eyes:

<a href="/resources/what-is-anchor-text">What is anchor text?</a>

<a href="/resources/what-is-anchor-text">
  <img src="anchor-text.jpg" alt="What is anchor text?">
</a>

And this one passes authority while communicating nothing:

<a href="/resources/what-is-anchor-text">
  <img src="anchor-text.jpg" alt="">
</a>

That last pattern is extremely common. Logo links, award badges, sponsor strips and "as seen in" rows are usually built by a designer with decorative alt text or none at all. The link works; the relevance signal is missing.

Where image links quietly break

Passing value depends on the link being a real, crawlable anchor. Several common implementations aren't:

CSS background images. An image set with background-image in CSS is not an <img> element and can't be wrapped in a meaningful link the way people assume. If the clickable area is a <div> with a JavaScript click handler and no <a href>, there is no link at all — no value passes, and the destination may not even be discovered. Google's guidance is consistent here: use <img> inside <a href>.

JavaScript-only navigation. Anything that only becomes a link after a script runs is at best unreliable. The <a href=""> needs to be in the served HTML.

Lazy loading done badly. Native loading="lazy" is fine. Custom lazy-loading that leaves the real URL only in a data-src attribute can stop the image being indexed — though the surrounding link still works, since the link is the anchor, not the image.

Image maps. <map> and <area> links are still supported and Google can follow them, but they're fragile and the alt text on each area is easy to omit. There's rarely a reason to use one in 2026.

A quick way to check any of this: right-click the image, choose "Inspect", and confirm you're looking at an <img> nested inside an <a href="..."> with a populated alt.

Why image backlinks often underperform

Image links you earn from other sites — badges, logos, directory listings — are worth having, but they have three structural weaknesses.

You don't control the alt text. The other site writes it, and most sites write nothing or write the file name. Your best case is a link with no anchor text signal.

They cluster in boilerplate. Sponsor logos, partner grids and "trusted by" strips live in sidebars and footers, which are discounted as template regions regardless of whether the link is an image or text.

Distributable badges have a spam history. Google has warned specifically about keyword-rich links embedded in widgets, badges and infographic embed codes distributed to many sites — the pattern where one embed snippet plants an identical optimised link across hundreds of unrelated domains. If you offer a badge ("Featured on X"), the safe form is a brand-anchored link, or a nofollow/sponsored attribute on the embed code. Optimising the alt text of a mass-distributed badge with commercial keywords is the version that gets sites into trouble, and it echoes what Google's link spam policy says about widely distributed template links.

None of that makes an image link bad. A logo link from a real customer's site is a genuine endorsement. It's just worth roughly what a footer text link is worth, not what an in-content editorial mention is worth — which is why in-content placement is the standard Backlinkster uses for every swap, with each one verified live by code rather than taken on trust. See the plans — five verified swaps a month on the free tier.

Writing alt text that works as anchor text

The rules are the same as for anchor text, with an accessibility layer on top — see what alt text is and how to write it for the full set. Alt text is read aloud by screen readers, so it has to make sense as a description of the link's purpose, not just as a keyword slot.

Describe the destination, not the picture. For a linked image, "Backlink exchange pricing plans" beats "screenshot-2026-08.png" and beats "colourful chart".
Keep it short. Roughly 5–15 words. Google's own guidance warns against stuffing alt text with keywords.
Never leave it blank on a linked image. Empty alt is correct for purely decorative images — but a decorative image shouldn't be your only link to a page.
Don't start with "image of". Screen readers already announce that it's an image.
Vary it. Identical alt text on the same link across every page is the image equivalent of exact-match anchor over-optimisation.

When to use an image link at all

Use them where they genuinely serve the reader: logos in navigation, product thumbnails in a grid, cover images in a related-posts module, screenshots that link to a live demo.

Don't use them as your primary internal linking mechanism. A page whose only inbound internal links are image thumbnails is much weaker than one linked from descriptive in-content text, and it's a quiet way to create near-orphan pages. The reliable pattern is both: the thumbnail links to the article, and so does a text link with a real anchor.

Frequently asked questions

Do image links pass link juice? Yes. An <img> inside an <a href> passes authority exactly like a text link. The only difference is that the alt attribute stands in for anchor text, so an image link with empty alt passes value without any relevance signal.

Does alt text count as anchor text? Yes. Google's image documentation states that when an image is used as a link, its alt text is treated similarly to the anchor text of a text link. That makes descriptive alt text on linked images worth writing carefully.

Are image backlinks as good as text backlinks? Usually slightly weaker in practice — not because the format is worse, but because you rarely control the alt text and image links tend to sit in logo strips, sidebars and footers, which are discounted as boilerplate. An in-content text link with a descriptive anchor is the stronger placement.

Do logo links count as backlinks? Yes, they're normal followed links unless marked nofollow. A customer or partner logo linking back to you is a real endorsement, though its sidebar or footer placement usually limits how much weight it carries.

Are badge and widget links against Google's guidelines? Distributing a badge or widget whose embed code contains keyword-rich links to many unrelated sites is the pattern Google warns about. A brand-anchored badge, or one whose link carries rel="nofollow" or rel="sponsored", is fine.

Does an image link need alt text for SEO? For a linked image, yes — that's your only chance to describe the destination. For decorative images that aren't links, an empty alt="" is the correct and accessible choice.

The bottom line

Image links pass value; the alt attribute is where the meaning lives. Make sure every linked image is a real <img> inside a real <a href>, write alt text that describes where the link goes, and don't rely on badges, logos or thumbnails to carry pages that deserve a proper in-content text link.