Buying an Image Link or Banner: Is Alt Text the Anchor?

When you buy a banner or logo link, the visible anchor text is gone and something else takes its place: the alt attribute. Google's link documentation (Opens in a new tab) says that for an image link it uses the alt attribute of the img element as the anchor text. If a purchased image link has an empty alt, it carries no anchor information; if the alt is filled, that wording does the anchor's job. The decision rule: accept an image link only when the alt wording is written into the order and the a, href and img markup can be verified; otherwise ask for a text link.

Alt text is not a ranking promise. The documentation offers no figure for how much weight an alt value carries. What it does say is narrow, and that is why it is usable for a buyer: the alt attribute exists, it serves as anchor text for image links, and stuffing it can make a site look like spam.

What an image link is

An img element inside an a element

An image link is an a element that wraps an img element. The outer a is the link; the inner img is its visible face. A visitor sees one clickable picture, but two separate checks apply: does the outer a carry an href, and does the inner img carry a filled alt?

Google's image guidelines (Opens in a new tab) say standard HTML image elements help crawlers find and process images, that Google finds images in the src attribute of the img element (including inside a picture element), and that CSS background images are not indexed. That last sentence concerns image indexing. The documentation says nothing about whether a link built on a background image carries a signal, so a buyer should ask for a real img element.

Seeing a logo is not seeing a link

A logo on a page does not prove a link exists. It may simply be placed there. Click it, confirm it lands on the right address, then inspect the element for the a and href. A plain image is not a link.

The accessibility side

The image guidelines add that alt text also helps people who use screen readers. A well written alt therefore serves search and accessibility with one string. A missing alt makes the link's purpose unclear to a screen reader user as well. A publisher with accessibility standards may already write alt text; if not, requesting it is a reasonable condition.

How the alt attribute works as an anchor

What the documentation states

Three points on the Link best practices page matter for image links. First, for an image link Google uses the img alt as anchor text. Second, empty link text combined with an empty alt is the bad example. Third, if an a element is entirely empty, Google may fall back on its title attribute. The image guidelines call alt text the most important attribute for giving an image metadata and say it is useful as anchor text if you use an image as a link.

Does a filled alt make it equal to a text link?

The documentation says Google "uses" the alt as anchor text. It does not compare the weight of that anchor with other kinds, so any claim that an image link equals a text link goes beyond the source. The one thing you can act on is that the alt is doing the anchor's work, so its content should be written into the order.

Writing the value

The guidelines warn that keyword stuffing in alt attributes can make a site look like spam, and they expect alt to describe the image. Practical suggestion: write a short, natural phrase that describes the image and, where useful, its destination. A brand name can be a natural and sufficient alt for a logo. The table compares alt values; the example strings are invented.

Where banner and logo links go wrong

The banner delivered with an empty alt

The simplest failure: the banner works, the click reaches the right page, but there is no anchor information. By the documentation's wording that is a bad example. The fix is one attribute, so it is a cheap request at delivery.

An alt that differs from what you ordered

A publisher who writes the alt alone may produce wording that does not match the order. You asked for the brand name; they wrote "advertising banner". That is not a technical error, but once the order states the value, the mismatch becomes objective.

A stuffed alt

An alt packed with several phrases to inflate link value is exactly what the image guidelines describe as a spam risk. For a buyer it means your site receives a link with a stuffed anchor. State in the order that the alt will be short and natural.

The file name

The guidelines recommend short, descriptive file names (my-new-black-kitten.jpg beats IMG00023.JPG) and say file names give only light clues about an image's subject. A file name does not replace alt. You need not write a file name clause; alt matters more.

When to ask for a text link instead

Decision rule

Work through these in order and ask for a text link at the first no:

1. Can the seller deliver the outer a element with the href?
2. Is the image a real img element rather than a CSS background?
3. Can the alt be written into the order?
4. Will the alt be short and natural rather than stuffed?
5. Do you need to control the anchor text precisely, or is brand visibility the goal?

The fifth answer decides. If you need precise, verifiable anchor wording, a text link is easier to check. If the banner's brand exposure is the point, an image link can serve. For the wider anchor decision, see anchor text strategy for link profiles.

When an image link can be reasonable

If a brand name works as alt and brand visibility is the purpose, an image link is acceptable. Prefer text when you want the exact anchor you ordered, or when you cannot be sure the publisher's component outputs a and href. The documentation does not forbid buying image links; if the placement is paid, the rel value question applies and is covered in dofollow, nofollow, sponsored and ugc compared.

Side by side

Writing the alt into the order

Checklist

• Where the image sits on the publishing page (in the article, sidebar, footer)
• The outer a element and its href, matching the target in the order
• The inner img element and its src
• The exact alt value
• The rel value
• Image size and file format if the publisher sets them
• A dated screenshot and the element copied from the rendered page

The full scope belongs in the order, and the service request form guide shows how.

Clauses to adapt

Practical suggestion; these are not contract templates:

• The banner is delivered as an img element inside an a element with an href.
• The alt attribute of the img equals "...".
• The alt contains no repetition or stuffing.
• The banner is not delivered as a CSS background image.
• The rel value is the one stated in the order.
• If the alt changes after delivery, the seller corrects it on written request.

If you supply the image

When you provide the banner, file format and size belong in the order. Google Search supports BMP, GIF, JPEG, PNG, WebP, SVG and AVIF in the img src, and recommends that the extension match the real file type. The documentation does not link format choice to link value, so use one of the supported formats and leave it there.

For broader image practice, read image SEO for Google and article image alt text and stock image licensing.

Example scenario: a regional cycling shop and a travel blog

Example scenario: A regional cycling shop buys a footer banner on a travel blog. The shop sends its own logo. The delivery looks right and the click lands on the shop's category page. Inspect shows an a element with the correct href, but the img carries alt="".

The shop owner writes to the blogger: please set the alt to the shop's name followed by "bicycle store". The blogger changes it, the owner inspects again and saves the element. Had the order stated the alt value, the same step would have been a delivery condition rather than a favor. For the next order the shop adds the clause "the alt equals the value in the order".

Misreadings to avoid

Alt is the anchor, so I stuff keywords

The guidelines say the opposite: stuffing can look like spam. Because the alt acts as anchor text it should be filled and natural, not inflated.

It is a logo, so alt is unnecessary

The documentation makes no exception for logos. If neither link text nor alt exists, it is the bad example.

Image links send a stronger signal

The documentation offers no such comparison. It states neither that image links are worth more nor that they are worth less than text links.

The image ranks in image search, so the link counts

Image indexing and link crawlability are separate topics. A picture appearing in image results does not show that its link is evaluated, and the documentation does not join the two.

Four ways a banner can be built

The same banner can be written in several forms, and each needs a different check. The table separates what matches the documentation's examples from structures the documentation does not mention.

The honest summary of the fourth row is that the documentation is silent. If an ad script puts the banner on the page, you see what it produced through Inspect. If the output is not an a with an href, the first step of the decision rule has failed and you can ask for a correction.

A delivery-day walk-through

1. Open the publishing page, find the banner and record its position with a screenshot.
2. Click the banner and compare the destination with the target in the order.
3. Go back, right-click the banner and choose Inspect.
4. Confirm the outer element is an a and its href is the target address.
5. Confirm the inner element is an img and its src points to an image file.
6. Read the alt: is it empty, does it match the order, is it stuffed?
7. Read the rel value and compare it with the contract.
8. Copy the outer element into your record and write the date.

The eight steps take about two minutes and give you evidence if a dispute arises. Menu names differ between browsers and languages. For the broader record format, see backlink package delivery tracking.

Alt text and page context

The image guidelines say Google uses alt text together with computer vision algorithms and the contents of the page to understand an image's subject. That sentence implies alt text does not work alone: the topic of the host page and the image itself are part of the context. In buying terms, there should be a sensible relationship between the page that carries the banner and the business the banner describes. A banner for an accounting service on an unrelated hobby page, with an alt describing the service, does not match the context emphasis in the documentation. This is not a ranking claim; treat it as a question to ask when choosing a placement.

Alt examples by kind of business

These strings are invented and span different kinds of business. Each is short, natural and descriptive.

• A language school logo: "Brand name language school logo".
• An online bookshop: "Brand name online bookshop, home page link".
• A scheduling software banner: "Brand name appointment software, product banner".
• A local restaurant logo: "Brand name restaurant logo".

The pattern to avoid is repetition. An alt that strings the brand and service names together several times is the stuffing the image guidelines warn about. In the order, write the alt as a single quoted phrase and ask for it exactly.

If a dispute starts

When you find an image link defect, proceed in this order:

1. Log the defect: screenshot, copied element, date.
2. Find the relevant clause in the order; if there is none, note that.
3. Send the correction request in writing with a deadline.
4. If the seller does not correct it, offer a text link instead; it is sometimes the fastest outcome both sides accept.
5. If that fails, return to the seller's refund and correction terms. The documentation has nothing to say there, so the result depends on the contract.

Keep the exchange in writing so that each side's statements are on record. When writing to the seller, cite your own order rather than quoting Google; the order is the firmer ground.

Common seller objections

Sellers raise a few predictable objections at delivery. The answers below stay within what the documentation says and are practical suggestions.

"The link is clickable, so it works"

Clicking shows browser behavior, not markup. The documentation ties crawlability to an a element with an href. Your answer: if Inspect shows a and href, the matter is closed; if not, a correction is needed.

"It is our logo, alt is unnecessary"

The documentation makes no exception for logos. Empty alt plus empty link text is the bad example. Your answer: a short alt such as the brand name is enough and goes in the order.

"We wrote a long alt for SEO"

The image guidelines say stuffing keywords in alt can make a site look like spam. Your answer: alt must be short, natural and descriptive; long repetitive values are rejected.

"The banner comes from an ad network, we cannot change the markup"

Ask for a written description of the structure. The documentation has no statement about ad script structures. If Inspect shows a, href, img and alt, it can be accepted; if not, offering a text link may be the solution.

Mixed orders: text and image links together

When one order contains both kinds, give each its own line. The text line states the anchor, the image line states the alt. Otherwise the delivery table blurs which link satisfies which clause. Each line may also need its own rel value, since a publisher may treat the two placements differently. The sources read here say nothing about how several links to the same target on one page are weighed, so name in the order which one is the ordered link.

Quick reference

Notes for agencies and multi-client work

An agency ordering banners for several clients can keep an alt dictionary per client: brand name, short description and phrases to avoid. Every seller then receives the same wording and deliveries are easy to compare. Practical suggestion: store the date each alt was ordered, so that if a brand name changes you can see which banners need updating.

For a small business the same idea is a single note: which banner, which site, which alt, which date. Recheck once within the first week after delivery. If the publishing page later moves or is deleted, that is a question about the page's fate, not about markup, and it needs its own process.

Google's documentation can change, so check the current pages before relying on any detail.

Frequently Asked Questions

Does the alt attribute replace anchor text in an image link?

According to Google's Link best practices page, Google uses the alt attribute of the img element as the anchor text for an image link. Empty link text combined with an empty alt is shown as a bad example.

Does a logo link need alt text?

The documentation makes no exception for logos. A logo link with neither link text nor alt falls into the bad example. A short, natural value such as the brand name can be a sufficient description.

Does stuffing keywords into alt help?

The image guidelines warn against it: keyword stuffing in alt attributes can make a site look like spam. Alt should be natural text that describes the image.

Can a link be built on a CSS background image?

The image guidelines say Google does not index CSS background images. The documentation has no statement about the signal of a link built on one, so ask in the order for a real img element.

Is an image link worth more than a text link?

The documentation makes no such comparison. In an image link the alt works as the anchor, but no figure or ratio is given for its weight.

What alt text should I put in the order?

Write a short, natural phrase that describes the image; a brand name can be enough for a logo. Put the exact value in the order and compare it with the delivered element.

Does rel differ for an image link?

If the placement is paid, Google prefers the sponsored value for advertisements and paid links, whether the link is text or image. It is a separate check from the alt.

Conclusion

In an image link the anchor is the alt attribute of the img element, not visible text. Google's Link best practices page says so and marks empty alt plus empty link text as a bad example, while the image guidelines add that alt is useful as anchor text for image links and that stuffing can look like spam. No document promises any ranking effect from an image link.

So accept an image link only with an a and href, a real img element and a short, natural alt written into the order; otherwise ask for a text link. If you want a package whose scope and delivery terms are stated up front, see the backlink packages on Akua Adforce; the details are on the product page.