Why this signal matters for Google
A client logo is a claim, not proof. Put a company's logo under a "Trusted by" heading and you tell the visitor two things: this company paid us, and it is happy for you to know. Marketers call this social proof: people trust a supplier more easily when others have already picked it. A logo does that job in one second, with nothing to read. An accounting firm showing the logos of three local businesses reassures faster than a paragraph about how careful it is. But you are the one who placed the image on the page. Nothing tells the visitor the relationship is real, recent, or approved by the client. A verified review lives on a platform you do not control; a logo lives on yours. So knowing how to display client logos on your website is mostly about making each one checkable.
Google tells its raters to doubt what a site says about itself. The people who grade search results for Google work from a handbook the company publishes, the Quality Rater Guidelines (QRG). Section 3.3.1 is blunt: plenty of sites like to say how good they are, and the rater should stay skeptical of those claims, especially when the site has something to gain. The rater is told to look for independent sources instead: reviews, articles, recommendations. A logo strip is exactly a claim a site makes about itself. It only counts if the rater can confirm it somewhere else: a signed case study, a review left by that client, a mention on the client's own site. Section 2.5.3 also sends the rater, starting from your homepage, to find the About page and the site's contact details. That is often where your logos sit, so they will be seen.
A fake logo costs far more than a missing one. Section 4.5.3 of the QRG gives the lowest rating to sites that publish deliberately inaccurate or misleading information about themselves in order to look trustworthy. Showing a big bank's logo because one of its employees once took your workshop is exactly that. Showing the logo of a real client who never agreed is a different problem: a logo belongs to its owner, who can demand that you take it down. The stakes rise on YMYL topics, the ones where a mistake can hurt the reader's health, money or legal rights. Section 3.3.1 says that on those topics reputation is judged first by what experts in the field say, a professional society for example. For a law firm or a clinic, recognition from the regulator outweighs a logo, and confidentiality rules often forbid naming a client at all. When I audit small-business and professional-firm sites, the logo strip is nearly always one flat image with no links, and nobody in the company can show me the client's permission.
A logo image tells an answer engine nothing. ChatGPT, Claude and Perplexity mostly read text. A strip made of a single image, with no company name written out and no link, does not tell them who your clients are. If someone asks "which agency has worked with dental clinics", they look for a sentence that says so, on your site and, better still, on someone else's. So write the client's name in full, add one line on what you did for them, and link the logo to a case study that tells the story of the job. The logo catches the visitor's eye; the text and the link give AI tools, and the rater, something to check. The strongest proof is still the one you do not write: the client naming you on its suppliers page or in a signed review.
The NeuroEEAT scoring grid (0-10)
Score what a stranger can verify by clicking your logos, not how famous the names are.
| Score | Description | Concrete indicators |
|---|---|---|
| 0-2 | Nothing, or fake | No client logos. Or worse: logos shown without permission, or from companies that were never clients (an employee you met at a training session, a software vendor you use). |
| 3-4 | Decorative | A strip of logos flattened into one image. No links, no names in text, no dates. Permissions are verbal or cannot be found, and some logos are out of date. |
| 5-6 | Honest | Real clients, written permission for each, current logos, each client's name readable as text. But nothing to click: the visitor has to take your word for it. |
| 7-8 | Checkable | Every logo leads to proof: a case study, a signed testimonial or a public review. One line says what you did and when. Clients, partners and press sit in separate blocks. The list is reviewed once a year. |
| 9-10 | Confirmed by the client | All of the above, and the proof also exists off your site: the client names you on its suppliers page, in a post or in a signed review. A reference clause is built into the contract, a log keeps every permission, and a logo comes down the day the client asks. |
How to audit it on your site
A full pass over your logos, from the client's permission to the visitor's click.
- 01
List every logo, everywhere it appears
Homepage, About page, service pages, footer, PDF decks, email signatures. Note the company name and the page for each one. You will often find forgotten logos on an old landing page or a brochure that is still online.
- 02
Find the written permission for each client
An email, a contract clause, a ticked box on the quote. Check what the permission covers: the name only, or the logo too? The website only, or your ads as well? A logo with no permission on file comes down while you ask again.
- 03
Confirm the relationship is real and current
Did this company pay you? In what year? Is it still a client? Does it still exist under that name? Compare the logo you show with the one on the client's own site: after a rebrand, an old logo gives away a list nobody maintains.
- 04
Click every logo like a stranger would
Where does the click go? Nowhere is the most common answer. Then search Google for your name followed by the client's name. If the only page connecting the two of you is your own, a rater has nothing to confirm what you display.
- 05
Look at what a machine and a phone can read
Is each logo its own image, with alternative text (the alt attribute) such as "Logo of [company]"? Is the client's name also written as text? Are the logos the same size, and still legible on mobile? Last, is the heading true: "Our clients" contains only clients.
How to activate or improve it
From an honest logo strip to a relationship the client confirms on its own side.
Build an honest logo strip
- Pick five to eight real, recent clients. A short true list reassures more than a wall of forty names.
- Ask for permission in writing. An email is enough: "May we show your logo on our homepage?"
- Ask the client for the official logo file instead of copying one from an image search.
- Give every logo the same height and alt text such as "Logo of [company]".
- Write an accurate heading above the block: "Trusted by" only works for actual clients.
Tie every logo to proof
- Make each logo a link to a case study, a signed testimonial or a public review from that client.
- Add one line of context under the logo: what you did, and in what year.
- Put a reference clause in your quotes: the client ticks what it accepts (name, logo, case study).
- A client says no to the logo? Offer its name in plain text, or an unnamed description: "a twelve-person dental clinic".
- Review the list once a year: remove long-gone clients, or date them ("client from 2019 to 2022").
Get the client to confirm it
- Ask the client to name you on its side: a suppliers page, a social post, a review signed in the company's name.
- Keep a permissions log: who said yes, on what date, for which use, and when to ask again.
- On each service page, show clients from the visitor's own industry first.
- Place logos where the visitor hesitates: under the offer, beside the form, near the price.
- Write down the removal routine: when a client asks, its logo comes down the same day, everywhere.
5 common mistakes to avoid
Sector specifics
Law firm
Client confidentiality comes before social proof. Name a client, or show its logo, only with written consent and within your bar's rules. On a topic where the reader's rights are at stake, section 3.3.1 has reputation judged by experts in the field: your bar membership, your publications and recognized legal directories outweigh a wall of logos. A business law firm can show a few consenting companies; a criminal defence firm, none.
Clinic or practitioner
Your patients are not references: no names, no logos, ever. The only logos that belong here are those of bodies that recognize you: a professional college, the hospital you are affiliated with, an official accreditation. Each should lead to the page on that body's site where your name appears. Otherwise it is decoration.
Show your commercial clients
A pest control company or an electrician mostly serves homeowners, who have no logo. Look at your commercial clients instead: restaurants, property managers, neighbourhood shops. Three names local people recognize reassure more than one national brand, provided you have their permission and, ideally, a signed review from them.
Where logos carry the most weight
The buyer is looking for a company like their own: same industry, same size. Sort your logos by industry and show the matching ones first on each page. Build the reference clause into the quote: a legal team refuses more easily when the request arrives after the fact. And link each logo to a case study whose numbers come from the client.
Signals to activate in parallel
A logo does not stand on its own. These signals give it something to be checked against:
FAQ
How do you display client logos on a website?
Show few logos, all of them real, and tie each one to proof. Start by getting written permission and the official logo file from every client. Place the strip close to where the visitor hesitates, under your offer or beside the form, with the client's name in text and a link to a case study or a review. Keep partners and press in separate blocks with accurate headings.
Can I use client logos on my website?
Yes, once the client has agreed in writing. Being your client does not give you the right to show its logo. An email is enough for most small businesses; larger companies will want a reference clause in the contract. Say exactly where the logo will appear, and take it down the day the client asks.
Is it legal to use company logos on your website?
Not without the owner's permission, as a rule. A logo belongs to the company that created it, and that company can demand its removal. The exact rules differ from one country to another, so have a lawyer review the clause for any contract that matters. Permission also protects the relationship: a client who finds its logo on your site without being asked will trust you less.
Do client logos help SEO?
Not directly. Nothing Google publishes says a logo counts toward a page's ranking. The effect runs through trust: a reassured visitor stays, reads and gets in touch. Logos also help a rater or an AI tool, provided they come with text and links to proof. A strip that is only an image changes nothing, except for the visitor's eye.
What if none of my clients are well known?
Show clients that look like your visitors: that is more useful than a famous name. A plumber reassures more with three local property managers than with a multinational. If your clients are private individuals or want to stay discreet, skip the logos. Rely on public reviews, unnamed case studies and your professional memberships instead. Never borrow the logo of a well-known company you barely have a link with.
Case study
Before · a product page with no trust logo
After · a recognized third party's logo, right where the doubt arises
Source: VWO / Wingify, 2014, https://wingify.com/success-stories/express-watches/ · This test is about a review platform's logo, not client logos: our bank of verified cases holds no public test on a client logo strip. It measures purchases, not Google rankings. What carries over: a logo reassures when it points to a third party the visitor can go and check, and when it sits where the doubt arises.