Your website is your company's showcase, but is it visible? You invest time and budget in your digital presence, yet the results are slow to materialize into qualified leads. This is a common frustration for many decision-makers.
The problem isn't necessarily the quality of your offer, but the way Google perceives your site. Algorithms change, competitors adapt, and your platform can accumulate technical debts invisible to the naked eye.
This is where the SEO audit comes in. Far from being a simple technical checklist, it's a strategic analysis of your digital health. It enables you to identify the obstacles to your growth and prioritize high-ROI actions.
You don't have to immediately release huge budgets to get started. There are powerful solutions available to diagnose your situation. Here's our selection of 6 free SEO audit tools to help you regain control of your performance.
Ubersuggest : Keyword strategy and traffic analysis
Ubersuggest, acquired and popularized by Neil Patel, is often the ideal gateway for companies wishing to understand their competitive environment without excessive complexity.
Although the tool offers paid plans (expect to pay between CHF 30 and CHF 100 per month, depending on the option), its free version allows you to carry out a few highly instructive daily searches.
Analyze keywords
The heart of the SEO war is the keyword. Ubersuggest lets you enter a term related to your sector (e.g. “CRM finance software”) and instantly see if it's worth targeting.
Monthly search volume
The tool tells you how many times this term is searched per month. This is crucial for estimating potential traffic. There's no point aiming for a keyword that nobody is searching for.
SEO difficulty (SD)
This is one of the most valuable indicators of your strategy. Ubersuggest assigns a difficulty score from 0 to 100%. If you're just starting out, or if your site has little authority, aim for keywords with low difficulty (below 40%) for faster results.
Competitor identification
By entering your domain name or that of a rival, you'll discover which keywords they're positioning themselves on. It's a gold mine for identifying the market share they hold that you could win back.
Content ideas
The tool doesn't just give you raw data. It suggests topics for articles or pages based on what's already performing in your industry. This aligns your content production with the real expectations of your target audience.
Woorank: Identify immediate technical weaknesses
If you're looking for a quick, almost instant diagnosis, Woorank is an excellent option. It acts as a thermometer for your website.
Instant scanning
Woorank is a browser extension and online tool that scans your page in seconds. It generates a score out of 100, based on essential SEO criteria.
The tool checks the fundamentals:
- Are Title and Meta Description tags present and of the right length?
- Is your site mobile-friendly?
- Are structured data correctly implemented?
It's a particularly useful tool for quickly validating the work of a technical team, or for taking stock before a redesign. Note that the free version is limited, and detailed reports require a subscription (often around 80 CHF/month).
Ahrefs: The reference for authority and backlinks
Ahrefs is an institution in the world of SEO, renowned for the power of its indexing robots. While the full suite is expensive (several hundred CHF per month), they have launched a very powerful free version: the Ahrefs Webmaster Tools (AWT).
This version is available free of charge for all sites you own (verification via Google Search Console required).
Backlink analysis
This is Ahrefs' historic strength. You can see who's linking to your site. For a marketing manager, this is an indicator of trust and popularity. A site with quality links from institutional partners or recognized media will have greater authority in Google's eyes.
Automated technical audit
AWT regularly scans your site for over 100 common technical problems:
- Slow pages.
- Broken links.
- Missing tags.
This is an excellent passive monitoring tool. You receive e-mail alerts if the health of your site deteriorates, so you can react before your sales are affected.
Google Search Console: The source of truth
It's impossible to talk about SEO auditing without mentioning the official Google tool. It's the only tool that gives you data directly from the search engine, without estimation.
Why is it essential?
Google Search Console (GSC) is totally free. It doesn't give you an estimate of your traffic, but the reality of clicks and impressions.
Analyze actual performance
You can see exactly which queries your site appears for, how many people click on it (CTR) and what your average position is. If you find that you're getting a lot of impressions but few clicks for a strategic page, this is a clear signal: your title tag or meta description isn't incentivizing enough.
Indexing health
GSC tells you if Google is having problems reading your pages. If a strategic sales page isn't indexed, it doesn't exist for your potential customers. The tool alerts you immediately to these critical problems.
PageSpeed Insights: User performance comes first
Since the introduction of the “Core Web Vitals”, loading speed is no longer a comfort, it's an official ranking criterion.
Measuring the user experience
Google PageSpeed Insights analyzes your site on mobile and desktop devices. It doesn't just time loading, it evaluates visual stability and interactivity.
- LCP (Largest Contentful Paint) : How fast does the main element of the page display?
- CLS (Cumulative Layout Shift) : Is the page stable, or do elements move during loading (which is extremely frustrating for the user)?
A direct impact on conversion
A slow site drives visitors away before they even see your value proposition. For a decision-maker, a red score on this tool is often synonymous with a wasted advertising budget, as the bounce rate will mechanically be higher.
Screaming Frog SEO Spider: The in-depth technical audit
Finally, here's the technical experts' favorite tool. Screaming Frog is a software program you can install on your computer that simulates the passage of Google robots over your site.
X-ray vision of your architecture
The free version allows you to crawl (analyze) up to 500 URLs, which is enough for most showcase sites or Swiss SMEs.
It will list absolutely everything:
- Internal and external broken links (404 errors).
- Redirect strings that slow down robots.
- Orphan pages (pages that exist but aren't linked anywhere).
- Heavy images with no alternative text.
This is the most “raw” tool on this list, presenting data in Excel spreadsheet form. But it's also the most accurate for identifying a specific technical error that could be blocking the SEO of an entire section of your site.
From diagnosis to strategy
These 6 free tools give you a complete overview of your SEO health:
- Ubersuggest for keyword strategy.
- Woorank for a quick check-up.
- Ahrefs (AWT) for authority and follow-up.
- Google Search Console for actual performance data.
- PageSpeed Insights for speed and user experience.
- Screaming Frog for in-depth technical analysis.
However, having the best thermometers isn't enough to cure the patient. These tools will provide you with data, alerts and scores. The real challenge for mature companies is not collecting this data, but interpreting it to make the right strategic decisions.
An audit reveals the symptoms. The cure lies in an SEO strategy aligned with your business objectives, integrating the creation of quality content and ongoing technical optimization.
If these tools reveal gaps in your current strategy, or if you'd like to turn these insights into a concrete action plan for your growth, our team is here to support you.
Co-founder of Smart Impact.Passionate about the web from the outset, he launched his first project in 2006: an online music magazine that is still running today. With almost 20 years' experience in SEO, a federal diploma in marketing and a solid geek culture, he and his team transform customers' (sometimes vague) ideas into concrete digital projects.