September 2026 — Updated Rankings

Best SEO Companies

This is WebDesignRankings’ independently evaluated list of the best SEO companies, ranked by verified client reviews, service breadth, and track record — updated for September 2026. Browse the top 5 below, or jump to the full comparison table for size, location, and pricing details on every agency.

1WebFX – Digital Marketing for the AI Era website screenshot

#1 – WebFX – Digital Marketing for the AI Era

WebFX is a digital marketing agency built for the AI era, with a team of 700+ experts and a focus on growing client revenue rather than channel metrics. The agency reports driving more than $10 billion in revenue and 24 million leads for clients, using strategies powered by RevenueCloudFX and OmniSEO® — its proprietary technology for tracking and growing brand visibility and revenue across AI search engines and other digital channels.

It has been named a top SEO company by Clutch and an Inc. Power Partner in advertising, marketing, and sales.

2Lounge Lizard – Best of Breed Since 1998 website screenshot

#2 – Lounge Lizard – Best of Breed Since 1998

Lounge Lizard has 23 years of experience in website design and development, digital marketing, social media, seo, and mobile app development. Lounge Lizard Brandtenders and Marketing Mixologists have been driving leads and producing best of breed design and branding for clients across industries and around the world since 1998. Lounge Lizard has offices in NYC, Long Island, Nashville, Washington DC, and Los Angeles.

3SEO Image website screenshot

#3 – SEO Image

SEO Image® will change your business! We are rated as one of the Best SEO companies and Online Reputation Management agencies in the world by numerous review sites like Find Best SEO, Promotion World, 10 Best SEO, 10SEOs, Clutch.co, Top SEO's, and many others.

4PaperStreet Web Design website screenshot

#4 – PaperStreet Web Design

PaperStreet Web Design is a small agency based in Fort Lauderdale, FL. They're a web design agency founded by a lawyer, for lawyers, and they've created 1,500+ happy clients since 2001. They get results for law firm websites and also provide internet marketing services. Click the button below to visit their website, or give them a call!

5SmartSites Digital Marketing Agency website screenshot

#5 – SmartSites Digital Marketing Agency

Outsmart the competition with best-in-class digital marketing services. With over 150 ⭐⭐⭐⭐⭐ reviews online, SmartSites 💡 is America's #1 rated digital marketing agency. Get more traffic. Acquire more customers. Sell more stuff. SmartSites works for businesses of all sizes. SmartSites is a Google Premier Partner and Facebook Marketing Partner.

Searching for a reliable search engine optimization (SEO) company is a big decision — industry estimates put the number of SEO companies operating in the U.S. alone in the hundreds of thousands.

To narrow the field, the WebDesignRankings (WDR) team independently evaluated hundreds of SEO agencies using our methodology, weighing client reviews, years in business, service breadth, and more — no agency pays to appear on this list.

Below, you'll find a vetted shortlist of top SEO companies, each with:

  • The firm's location
  • The firm's size
  • The firm's average rating and number of reviews
  • Its website and full WDR profile for more detail
Jump to the full ranking table to compare all of this year's top-rated SEO agencies.

Meet the Top SEO Companies

The top SEO companies provide the support businesses need, from startups to enterprises. With specialized team members and platforms, SEO firms can assist with an organization's on-page, off-page, and technical SEO needs, like link building, SEO-friendly website design, and SEO content creation.

Select any company below to expand its profile — each panel includes real client review highlights, not just a star rating, so you can verify what a firm actually delivers before you reach out.

#CompanySizeLocationReviewsOverview
1700+ expertsPennsylvania★★★★
115 Reviews
View Profile
250 – 249New York, NY★★★★
18 Reviews
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32 – 9New York, NY★★★★★
5 Reviews
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450 – 249Ahmedabad★★★
14 Reviews
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510 – 49Fort Lauderdale, FL★★★★★
68 Reviews
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650 – 249Paramus, NJ★★★★
245 Reviews
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750 – 249Chicago, IL
0 Reviews
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850 – 249Englewood, CO★★★★
172 Reviews
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910 – 49St. Louis, MO
0 Reviews
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1010 – 49San Diego, CA
0 Reviews
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1150 – 249Newton, MA★★★★★
5 Reviews
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12250 - 999Valencia, CA
0 Reviews
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1350 – 249Culver City, CA★★★★
160 Reviews
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1410 – 49Baltimore, MD★★★★
4 Reviews
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1550 – 249Noida
0 Reviews
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1610 – 49Zhytomyr
0 Reviews
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1710 – 49Mount Pleasant, SC
0 Reviews
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1810 – 49New York, NY
0 Reviews
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1910 – 49Concord,
0 Reviews
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2050 – 249Jamnagar
0 Reviews
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2110 – 49New York, NY
0 Reviews
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2210 – 49Draper, UT★★★★★
16 Reviews
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2350 – 249Delray Beach, FL★★★
9 Reviews
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2410 – 49Naperville, IL
0 Reviews
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2510 – 49San Francisco, CA
0 Reviews
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2610 – 49Royal Oak, MI
0 Reviews
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2710 – 49Morrisville, NC★★★★
18 Reviews
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2810 – 49Manchester
0 Reviews
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2910 – 49Westlake, OH★★★★
17 Reviews
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3010 – 49Arlington, VA
0 Reviews
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3110 – 49South Jordan, UT
0 Reviews
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3210 – 49Sausalito, CA
0 Reviews
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3350 – 249Bhubaneswar
0 Reviews
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3410 – 49Trevose, PA
0 Reviews
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3550 – 249Philadelphia, PA
0 Reviews
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3650 – 249Columbus, OH
0 Reviews
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3710 – 49Myrtle Beach, SC
0 Reviews
View Profile

Want to know exactly how we built this list? See our full ranking methodology below, including how we score client reviews, verify agency claims, and decide who makes the cut.

How We Rank These SEO Companies

With thousands of SEO agencies to choose from, it's hard to know which “best of” lists to trust. Here's exactly how we built this one.

The WDR team evaluated hundreds of SEO firms — deliberately including agencies from across the U.S. and abroad — against a consistent set of criteria:

  • Client track record. Verified reviews and testimonials from current and past clients, not just an agency's own case studies.
  • Service breadth. Whether a firm covers on-page, off-page, technical, and local SEO, or specializes in one area.
  • Affordability. Pricing relative to the results and services delivered, not just the lowest bid.
  • Longevity and stability. Years in business and consistency of results over time.

No agency pays for placement on this list, and sponsorship never factors into where a firm ranks. See our full ranking methodology for more detail.

How to Vet an SEO Company Before You Hire

A polished pitch isn't proof of results. Before you sign a contract, use these checks to separate agencies that can back up their claims from ones that can't.

  • Read the reviews, not just the rating

    A high star rating means little on its own. Read a handful of full reviews — ours include verbatim client highlights — and look for specifics: what results did the agency actually deliver, and over what timeframe?

  • Ask to verify case studies

    Request the client's name, industry, and a way to confirm the results independently — through a public review, a case study page, or a reference call. An agency confident in its work will make this easy.

  • Get specific about deliverables

    “SEO” can mean anything from a single audit to a full monthly retainer. Ask exactly what's included — keyword research, content, link building, technical fixes, reporting cadence — before comparing price.

  • Watch for red flags

    Be cautious of agencies that guarantee a #1 ranking, won't explain their process, or have zero reviews or case studies after years in business. Legitimate SEO firms are upfront about the fact that real results take time.

  • Confirm they can explain the AI-search shift

    Search results now often include AI-generated answers alongside traditional listings. A capable SEO company should be able to explain, in plain terms, how that affects your visibility and what they're doing about it.

Most popular FAQs

Get answers fast with these popular FAQs:

What does an SEO company do?

An SEO company provides search engine optimization support, like by:

  • Researching keywords
  • Writing SEO-optimized content
  • Outreaching publishers for link building
  • Compressing images
  • Adding internal inlinks

SEO companies will charge an hourly or monthly rate for their services, or in some instances, a flat-rate fee for a short-term project.

How much do SEO services cost?

SEO services from reputable agencies often cost $900 to $3500 per month. The reputation, experience, and even location will impact how much a top SEO service provider charges. For instance, agencies located in California vs. Ohio will often have higher rates due to the higher cost of living in California compared to Ohio.

When should I hire an SEO firm?

A few questions that can help you decide if it’s time to hire an SEO firm:

  • Am I able to manage a full-time SEO strategy in-house?
  • Am I struggling with specific SEO strategies, like link building?
  • Do I have the marketing budget to hire a top SEO company?
  • Am I achieving the kinds of results my business expects from SEO?

Based on your answers, you can determine if you should start looking for reputable SEO optimization companies.

Is it worth paying for an SEO company?

An SEO company’s worth rests on the agency solving your problem, like:

  • Improving rankings
  • Fixing a Google penalty
  • Growing traffic
  • Generating organic sales or leads

That’s why finding a reputable search engine optimization agency is so important because they focus on solving their client’s problems — and it’s why the WDR team produced this report of the best SEO service providers. We recognize a lot rests on hiring a trusted SEO agency, from your organization’s success to your career’s trajectory.

Who are the best SEO companies?

The list of the best SEO companies varies, but these companies share several traits, like:

  • Creating a unique strategy for clients
  • Optimizing for the different types of SEO, like on-page, local, off-page, and technical SEO
  • Documenting their work
  • Reporting on performance
  • Taking the time to understand a client’s business, goals, and aspirations

FAQs about deliverables

Learn more about how SEO marketing firms can support your website:

What do the best SEO agencies do?

The best SEO agencies are the best because they give additional support, like by:

  • Providing guidance during a site migration or website redesign
  • Reporting on search engine optimization performance
  • Focusing on metrics beyond rankings and traffic, like sales or leads generated
  • Consulting on upcoming or predicted updates, like AI Overviews in Google Search

While researching SEO firms, our team noticed the best SEO companies were often described as integral to the client’s marketing team.

What are the types of SEO services?

The types of SEO services offered by agencies include:

  • Full-service, which optimizes a website for off-page, on-page, technical SEO, and local SEO (if applicable).
  • On-page, which optimizes a site’s on-site SEO with title tags, meta descriptions, and more.
  • Off-page, which optimizes a site’s off-site SEO with backlinks.
  • Technical, which optimizes on-site elements that affect crawling, indexing, and page speed.
  • Local SEO, which optimizes a business’s website and local listings.
  • Ecommerce SEO, which optimizes a business’s online store and/or product listings on third-party sites.

More specialized services are available, like voice search engine optimization or AI Overviews optimization. When researching top SEO service providers, businesses are often searching for firms that offer the services listed above vs. these specialized offerings.

Many SEO firms also offer PPC advertising as a complementary channel — worth asking about if you want paid and organic search working together.

What do the best SEO services include?

From our research, the best SEO services are full-service solutions because they optimize the different types of SEO impacting organic visibility, like:

  • On-page SEO
  • Technical SEO
  • Off-page SEO

So, these services will typically include the following:

  • SEO audit
  • Keyword research
  • Competitor analysis
  • On-page optimizations, like writing title tags and inserting keywords
  • Off-page optimizations, like outreaching publishers and developing link-worthy content
  • Technical optimizations, like compressing images and improving site architecture
  • Local optimizations, like claiming local listings and producing localized site content
  • SEO reporting

FAQs about pricing

Learn more about the average cost of SEO services ($900 to $3500 per month):

Are the best SEO services affordable?

Because reputable search engine optimization companies have higher prices, it’s natural to wonder if the best SEO services are affordable, especially for smaller businesses. Let’s step back, and redefine ‘best’ — best is what’s best for your company vs. what’s best for a Fortune 500 organization. That can mean that, yes, the best SEO services are affordable because they meet your needs (which are important to define before searching for SEO companies).

Should you find that the SEO services you want are ones you can’t afford, there are some alternative options:

  • Use free tools like Screaming Frog
  • Split SEO work between yourself and an SEO freelancer
  • Consider one-time SEO projects to fix important issues outside your capabilities

What determines how much SEO agencies charge?

A couple of factors determine how much SEO agencies charge:

Experience

SEO companies with more experience will generally have higher rates for their services, which makes sense. With their expertise, they can help you get more value from SEO in comparison to working with an agency that has less of a background with SEO.

Staff size

Generally, top SEO firms will maintain larger teams. They’re successful, so they’ve grown and built an experienced staff. This fact results in higher in-house costs, which translates to higher SEO services pricing.

Agency capabilities

The best SEO optimization companies have extensive capabilities that distinguish them from other agencies. Maybe they can provide specialized SEO services, for example, or supporting strategies, like content marketing. These additional offerings can influence SEO rates.

Service deliverables

What your SEO services include will also determine your SEO firm’s pricing. If you request weekly updates on your rankings, for instance, that could lead to higher costs because of the time required to document and share those reports.

Project requirements

You also have some influence over your search engine optimization company’s pricing. If you have more complex requirements, for example, that could lead to higher rates or additional charges, like for weekly ranking reports.

Project scope

The scope of your project can also affect your SEO costs. A corporation, for instance, will have much bigger project needs than a startup. These needs translate to more work for the agency, which the agency will incorporate into their pricing.

Project aggressiveness

While you can’t change how long SEO takes, you can decide how aggressively you will approach SEO. Maybe you’ll produce a bunch of optimized content, for example, within a short period. The more aggressive you are, the more work you create for your agency, which results in higher SEO costs.

FAQs about hiring

Why hire an SEO services company?

So you’ve used our best web design companies page to decide what web design company fits your business best. You now have an impressively-designed website that looks like something out of your dreams.

The colors are just right, your blog is finished, and there are even photos and graphics in all the right places. But how do you get traffic to your fresh new piece of online real estate? Some business owners make the mistake of thinking as soon as they have a website, the traffic will come pouring in.

Unfortunately, that’s not the case.

You now have to create content for your website based around what your target audience wants to see and read, target specific keywords, make sure your navigation bar is user-friendly, and ensure that your site is ready to go for mobile.

For a lot of companies, these ongoing tasks require a significant amount of time and skill.

That’s why businesses decide to outsource and hire an SEO agency. An SEO agency can take care of all these tasks, which allows your in-house staff to focus on their day-to-day responsibilities while still amplifying the value of your web design investment.

How can an search engine optimization company help my business?

Working with a search engine optimization company can help your business in a few ways, including:

  • Alleviate the workloads of in-house employees
  • Get expert SEO advice for optimizing your site
  • Bring more traffic to your website
  • Achieve higher rankings in search results
  • Earn more online sales from website visitors
  • Get more leads from online form submissions
  • Attract foot traffic by appearing high in local search results
  • And more

When you decide to work with one of the best SEO companies, you get someone committed to bringing value to your business. If they don’t, it doesn’t make sense for you to continue partnering with them. That’s why the top SEO firms focus on delivering value to your business.

How do I choose the best SEO company for my business?

It’ll help make your decision easier to know that there isn’t one perfect SEO company, but only the perfect SEO company for your unique business. Each of the SEO companies on our list specializes in something different, has a different process, and are located in different areas. With all of these variables, you’ll definitely be able to find an SEO company that is the best partner for your business.

Here is a list of a few things you should consider before choosing an SEO company.

Location

Some businesses like knowing that they can visit their SEO firm at any time to talk budget, campaign, and progress over coffee.

If this is something that matters to you, you should definitely consider your proximity to your potential SEO service provider.

It’s not necessary to live right next door, but if you’d rather meet in person, location is important.

Budget

Budget is one of the most important things to consider when looking for the best SEO agency.

You should start by setting a personal budget and sticking with it – if not, you could find your business in financial trouble.

There is a range of budgets that SEO firms work with, so it should be no problem to find one within your price range.

Culture/Best Practices

Looking into the culture and best practices of an SEO company is also extremely important.

This helps you to see their personality, how they feel about their clients, how they treat their clients, and what to expect from working with them.

If their best practices don’t seem to satisfy you, or their culture doesn’t fit what you’d expect from a company you’d like to work with, you should count them out.

Testimonials

Testimonials refer to satisfied clients who have spoken on behalf of an SEO company – telling other potential clients what they liked about working with them, what results they were able to drive for them, as well as their all-around satisfaction.

If an agency doesn’t have any testimonials, it’s best to stay away. Client testimonials speak volumes, and so does lack thereof.

You want the SEO company that has upwards of one hundred testimonials to prove they’re worth your time and commitment.

FAQs about SEO

What is SEO?

SEO, or search engine optimization, is the process of improving your website in a way that lets users find your business more easily in search results. Without SEO, your newly designed website won’t work to its fullest potential because it will be hard to find online.

What does SEO involve?

SEO includes on-page and off-page strategies like:

  • Keyword targeting
    Content creation
    Backlink building
    And more

These strategies help your website rank better in search engines like Google.

If you’re looking to hire an SEO marketing firm, you probably have some trouble with these areas.

You might not have the time, skills, or resources to optimize your site entirely, for instance, which can make ranking in search results difficult. A top SEO company, however, can come in and fully optimize your site so you can rank well in search results.

FAQs about AI search and SEO

How is AI changing SEO?

As of September 2026, many search results include an AI-generated summary or answer alongside traditional listings, and more people are researching purchases through AI chat tools directly. This doesn't replace traditional SEO — search engines still need to crawl, understand, and trust a site to surface it — but it does mean visibility now also depends on being clearly written, well-structured, and easy for both people and AI systems to cite accurately.

What should I ask an SEO company about AI search?

Ask how they structure content so it can be accurately summarized or cited by AI tools, whether they track visibility beyond traditional rankings (like brand mentions in AI-generated answers), and how they're adapting reporting as search results continue to change. An agency that can't speak to this is behind the industry.