What is SEMrush – and What is it Used For?

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So, What Is SEMrush?

SEMrush (pronounced “sem-rush”, not “S-E-M-rush” as some insist) is an all-in-one digital marketing platform designed to help marketers improve their online visibility. At its core, it’s a toolkit built for search engine optimisation (SEO), paid search (PPC), content marketing, social media management, and competitive research.

In short: SEMrush is the Swiss Army knife of digital marketing tools – if Swiss Army knives came with keyword data, domain analytics, and a slightly intimidating interface.

It was founded in 2008 by a group of SEO and IT specialists and has grown into a globally recognised platform. Semrush says its tools are trusted by more than 28 million marketers worldwide. It’s used by everyone from scrappy startups trying to outrank local competitors to large marketing teams at global brands.

How Does Semrush Work?

Semrush versus Google Search Console: Search Console reports how your verified website performs in Google Search, including clicks, impressions and indexing information. Semrush is a separate research platform that estimates keyword demand, competitor visibility and other metrics using its own datasets. These figures will not always match: estimated traffic should not be treated as measured visitors.

New to SEO? Start with SEO Demystified and our practical SEO guide before deciding which paid tools you need.

Semrush brings data from search engines, websites, advertising and other digital sources into a collection of marketing toolkits. You enter a domain, keyword, competitor or project and use the relevant reports to research demand, benchmark competitors, audit a website, monitor rankings and identify opportunities. In practical terms, it turns large amounts of search and competitor data into information marketers can use to decide what to improve.

What is Semrush Used For?

Keyword Research

If Google is the jungle, keywords are the trail – and SEMrush is your compass, map, and survival guide rolled into one.

The keyword research tool lets you:

• Discover what terms your audience is searching for

• Uncover long-tail keyword opportunities

• Assess search volume, competition, and keyword difficulty

• Spy (legally!) on the keywords your competitors rank for

This makes it a dream for content strategists, SEO writers, and PPC managers alike.

Competitor Analysis

One of SEMrush’s most celebrated features is its ability to snoop on your rivals like a nosy neighbour with binoculars.

You can:

• See your competitors’ top-performing pages

• Find out what keywords they’re bidding on

• Understand their backlink profile

• Benchmark your site’s performance against theirs

This isn’t about copying – it’s about learning what’s working for others and then doing it better.

Site Audits

SEMrush can crawl your website and tell you what’s broken, what’s slow, and what’s making Google quietly judge you.

Its site audit tool assesses:

• Page speed

• Crawlability issues

• Missing meta descriptions

• Broken links

• Mobile usability

It then scores your site health out of 100 and gives you a checklist of fixes. Think of it like a health MOT – but for your website, not your cholesterol.

Backlink Analysis & Link Building

Backlinks are still one of the most important ranking factors in SEO. SEMrush helps you:

• Analyse who is linking to your site (and whether you should be flattered or worried)

• Disavow toxic links

• Discover new backlink opportunities

• Monitor changes in your backlink profile

It’s especially helpful if you’re trying to recover from a Google penalty or build authority in a competitive niche.

Content Marketing Toolkit

SEMrush has a content marketing suite that includes tools for:

• Topic research (great for finding blog ideas)

• SEO writing assistant (for improving readability and keyword targeting)

• Brand monitoring (to track mentions of your company)

• Post tracking (to measure article performance)

Ideal for marketers trying to balance creativity with performance metrics – because yes, your lovely blog post can also bring in traffic.

Advertising & PPC Tools

Not just for organic search lovers, SEMrush also helps with paid search campaigns. It provides:

• Keyword suggestions for Google Ads

• CPC (cost-per-click) estimates

• Competitor ad copy and targeting insights

• Tools to track and improve campaign performance

Useful for PPC specialists, or anyone who’s ever thrown money at a Google Ads campaign and hoped for the best.

Social Media Tools

Though not its primary function, SEMrush does include features for:

• Scheduling and publishing posts

• Competitor social performance tracking

• Analysing engagement and follower growth

This makes it possible to manage multiple platforms (e.g., Facebook, X/Twitter, LinkedIn) from one central hub.

Semrush and AI Search Visibility

Semrush is no longer focused only on traditional search rankings. Its current AI visibility tools measure how brands appear in AI-generated answers and citations across platforms including ChatGPT, Gemini, Perplexity, Google AI Mode and AI Overviews. Marketers can use these reports to track brand mentions, identify prompts and topics where competitors appear, inspect cited pages and audit whether technical issues could restrict AI crawlers.

This matters because SEO rankings and AI visibility are related but not identical: a site can perform well in conventional search while being mentioned or cited differently in conversational answers. Semrush now brings both types of visibility into the same broader platform.

Is Semrush Worth It?

The short answer: yes – if you use it properly.

Semrush isn’t cheap, and its pricing is now more modular than it used to be. In 2026, businesses can buy its core SEO tools, AI Visibility capabilities and other specialist toolkits separately, or choose plans that combine SEO and AI-search features. There is also a limited free tier for trying the platform. That flexibility is useful, but paid plans can still become expensive for freelancers or micro-businesses once they need broader tracking, content or AI visibility features. For agencies and in-house teams that use the data regularly, the value is more likely to come from the time saved and the ability to make better-informed decisions.

Think of it this way: you could try and do all of this manually with spreadsheets, endless Googling, and guesswork… or you could let SEMrush do the heavy lifting while you focus on strategy, creativity, and actually getting results.

Who Should Use SEMrush?

• SEO professionals – obviously

• Content marketers – to research topics, optimise content, and track performance

• PPC specialists – for keyword planning and competitive insight

• Digital marketing agencies – to manage multiple clients efficiently

• In-house marketing teams – to monitor visibility and improve ROI

Even marketing students or early-career professionals can benefit from getting familiar with it – many universities now include SEMrush training in digital marketing modules.

Getting Started: A Simple Semrush Workflow

1. Choose one goal: improving an existing article rather than collecting dozens of reports.
2. Check your baseline: use Search Console for actual clicks and impressions, and Semrush to explore related searches and competing pages.
3. Review search intent: check what currently ranks and whether your page answers the same underlying question.
4. Improve the page: clarify answers, update outdated information and add relevant internal links.
5. Measure again: allow time for recrawling, without assuming a ranking improvement is guaranteed.

For AI-oriented search, see our GEO and AIO guide.

Final Thoughts

SEMrush is not magic. It won’t make your website rank #1 overnight, and it won’t write a blog post for you that suddenly goes viral (though it might help you figure out what could). But it is a powerful ally in a marketer’s toolkit, combining data and insights into a platform that rewards consistent, strategic use.

If you’re serious about your digital marketing – and you’re willing to invest the time to learn how to use it properly – SEMrush is worth exploring.

TL;DR

SEMrush is a powerful digital marketing tool used for SEO, PPC, content marketing, and competitor analysis. It helps marketers identify keywords, track rivals, audit websites, build backlinks, and plan content strategies. While it’s not cheap, its robust features make it worth the cost for serious marketers and teams looking to improve their online visibility.