Website Audit: The 4 Pillars to Check

Table of contents

• Why audit your website before you invest in marketing
• Analyzing your SEO: visibility and keywords
• Measuring and understanding your traffic sources
• Technical performance: speed, mobile, and Core Web Vitals
• Analyzing user experience and conversion rate
• Choosing your audit tools: free or paid?
• Prioritizing fixes with an impact/effort matrix
• Setting up regular tracking with Lysible
• Frequently asked questions

Why audit your website before you invest in marketing

Auditing your website before you buy traffic makes sure every visitor you bring in actually has a real shot at becoming a customer. Without that step, you're paying for people who leave in three seconds.

This pattern repeats itself at small businesses. The ad budget grows, traffic goes up, and revenue stays flat. The problem was never a lack of visitors: it was a slow site, a confusing product page, a form that breaks on mobile. The ads just made the underlying flaw more expensive.

France Num's data backs this up. According to the France Num 2025 barometer on digital maturity among French small and midsize businesses, a large share of owners say they have a website without knowing whether it generates a single lead. The site exists, but nobody measures what it produces. That's exactly where an audit changes things.

Think of your website like a physical store. Before you pay for billboards to bring in foot traffic, you check that the door opens, the prices are readable, and the register works. A website audit plays that same role of upfront quality control, turning a blind expense into a reasoned investment.

On a B2B services project I worked on last year, the client wanted to triple their ad budget. We looked at the numbers first. The result: 68% of visitors left the site without ever seeing the contact page, because the menu was unreadable on smartphones. We fixed the menu for a few hundred euros. Quote requests nearly doubled within two months, without touching the ad budget.

What does a website audit actually look at?

A complete audit examines four pillars: organic search, traffic sources, technical performance, and the conversion journey. Each one answers a simple business question.

SEO answers "can people find me on Google?" Traffic answers "who's coming, and from where?" Technical performance answers "is the site fast enough for people to stay?" Conversion answers "how many visitors become customers?" These four angles cover the essentials. Everything else is detail you handle afterward. To go deeper on this overall diagnosis, our website performance audit method breaks down the process step by step.

Analyzing your SEO: visibility and keywords

SEO determines whether strangers find you on Google without you paying for it. It's your most cost-effective source of visitors over time, and the first thing to measure in a website audit.

Without visibility in search results, you depend entirely on advertising and word of mouth. Organic search, once in place, works for you around the clock. You just need to know where you currently stand.

How do I know if my website shows up on Google?

The fastest way to check: type site:yourdomain.com into Google. The number of results shown tells you how many of your pages the search engine actually knows about. If that number is much lower than your site's real page count, you have an indexing problem, meaning Google is ignoring part of your content.

To go further, open Google Search Console, the free official tool for managing your SEO. The "Coverage" report lists exactly which pages are indexed and which are blocked. The "Performance" report shows your queries, clicks, and average position. That's where everything happens.

One signal I always check first: queries where you rank in positions 5 to 15. These are your ripest opportunities. Content already sitting on page 2 just needs a small push to reach page 1, where most of the clicks are.

Which SEO criteria should you check first?

Four criteria matter more than the rest for a small business: title tags and meta descriptions, heading structure, indexing, and how well your pages match what your customers actually type into Google.

The title tag is the clickable blue headline in Google. If it's empty, duplicated, or off-topic, you lose clicks before the visitor even arrives. The meta description (that small gray text under the title) doesn't affect ranking, but it does influence click-through rate. Check that every important page has both, unique and descriptive.

Here's a quick checklist for a basic SEO audit.

Google's official documentation remains the best compass on these points. The Google Search Central SEO guide lays out, in plain language, the criteria that actually matter, without consultant jargon. For a broader benchmark, tools like Semrush or Ahrefs studies give you a sense of where you stand against competitors, but they're not essential when you're just starting out.

Measuring and understanding your traffic sources

Not all traffic sources are equal. One channel can bring in a lot of people without ever generating a sale, while another, quieter one drives your actual revenue. Traffic analysis exists to separate the noise from the signal.

This is the classic mistake I run into regularly. An owner proud of their "10,000 monthly visitors" discovers that 80% came from a viral post that has nothing to do with their offer. Vanity traffic: nice on a graph, useless for the business.

Where do my visitors come from, and which ones convert?

Google Analytics 4 (GA4), Google's free audience measurement tool, sorts your visitors by acquisition channel: organic search, direct, social media, email, paid ads, referral sites. The "Traffic acquisition" report gives you this breakdown in a few clicks.

But volume alone isn't enough. Cross-reference each channel with its conversion rate and the value it generates. A channel that brings 200 visitors, 10 of whom request a quote, is worth far more than one bringing 2,000 visitors and zero contacts. After spending hours digging through GA4 accounts, I've learned that the most profitable segment is almost always under-invested, simply because nobody had isolated it.

Also look at the full journey. A visitor rarely sticks to one channel before buying: they discover you on Google, come back through social media, and buy after an email. Understanding that chain is the job of marketing attribution, which connects every sale to its touchpoints. GA4's data-driven model handles this far better than simple last-click for a small business, with no enterprise budget required.

Here are the thresholds I keep in mind to qualify traffic quality.

Strong organic traffic is the best sign of long-term health. It costs nothing per visit and holds up better when budgets get cut. If 90% of your traffic depends on ads, you're fragile: the day you stop paying, everything stops.

Technical performance: speed, mobile, and Core Web Vitals

Your site's speed has a direct impact on sales. Past 2.5 seconds to load, mobile bounce rates climb sharply, and every extra second lost drives away visitors in a hurry.

Google formalized this measurement with three metrics grouped under the name Core Web Vitals. They reflect your visitors' real experience, not a theoretical score. Here's what they measure, in plain terms.

The official thresholds are defined and maintained by Google's own teams. The reference page on Core Web Vitals and their thresholds on web.dev is the authority here: LCP under 2.5 seconds, INP under 200 milliseconds, CLS under 0.1.

How do I test my website's speed?

The simplest, free test: Google PageSpeed Insights. Paste in a page's URL and the tool returns a score out of 100 plus the three Core Web Vitals, for both mobile and desktop. Lighthouse, built into Chrome, gives you the same kind of audit locally.

Test your homepage first, then your product or service pages, then your contact page. These are the pages that carry your conversions. Focus on the mobile score first: most visits now happen on smartphones, and that's also the version Google uses to rank you.

What load time is acceptable?

Aim for an LCP under 2.5 seconds on mobile. That's the official tipping point between a "good" page and one that "needs improvement." Between 2.5 and 4 seconds, you lose impatient visitors. Past 4 seconds, the bleeding gets serious.

Across most of the sites I've reviewed, the culprit is almost always the same: oversized, uncompressed images served at full resolution. Compressing your images and switching to WebP is often an hour of work for a site that loads twice as fast. The second recurring culprit is stacked tracking scripts and pop-ups. Every tool you add slows the page down. That's a trade-off worth making consciously.

In early 2026, a fashion ecommerce business I was tracking had a mobile LCP of 4.8 seconds. After compressing visuals and cleaning up scripts, it dropped to 2.1 seconds. Mobile bounce rate fell by roughly 15 points over the following quarter. No ad spend, just clean technical work.

This kind of fix shows up when you cross-reference speed and behavior, which is exactly what Lysible does continuously on your site. You see the bounce rate drop coming before a customer ever has to tell you.

Analyzing user experience and conversion rate

Conversion rate measures the percentage of visitors who take the action you want: a purchase, a quote request, a sign-up. It's the final metric, the one that ties everything else back to your revenue.

A site can be fast, well-ranked, full of traffic, and sell nothing. In that case, the problem is hiding in the journey: a form that's too long, an invisible button, a price that surprises people at the last step, a lack of trust. UX analysis means pinpointing exactly where people drop off.

Why do my visitors leave without buying or contacting me?

Three causes come up again and again: a confusing journey, a lack of reassurance, and a call to action buried in the page. Your visitors don't know what to do, don't trust you, or simply don't see the button.

To diagnose this, use two complementary approaches. GA4 shows you the pages where people leave your site and the funnel steps where they drop off. A tool like Hotjar records anonymized sessions and builds heatmaps, those colored zones showing where people click and where they stop reading. You see their behavior, literally.

The step I see people skip most often: testing your own conversion funnel on your phone, like an actual customer would. Do it. Fill out your form, add a product to the cart, go all the way through. You'll find friction you'd never notice from your office desktop.

A concrete example. A local services site I was tracking had decent traffic but very few inquiries. Session analysis revealed that the contact form asked for nine fields, including a business registration number, right at the first step. People bailed. We cut it down to three fields (name, email, message) and moved the rest further down. Inquiries grew by roughly 40% in six weeks. Three fewer fields, one unblocked journey.

Conversion rate benchmarks vary a lot by industry. Ecommerce often runs around 1 to 3%. A B2B services site with quote requests can aim for 3 to 5% on its key pages. Never compare your rate to some general average: compare it to yourself, month over month. Our web data analysis method for deciding fast breaks down how to structure this review in seven steps.

Choosing your audit tools: free or paid?

For a small business, the free trio (Search Console, GA4, and PageSpeed Insights) covers a solid 80% of a complete website audit. Stacking paid tools before mastering those three just wastes budget and scatters your focus.

This is where I break from the usual advice. Most articles push you to test eight different pieces of software. In practice, a small team never properly uses more than two or three tools. The rest piles up as forgotten subscriptions. I've seen small businesses pay €200 a month for an SEO suite they used 5% of.

What's the best free website audit tool?

The best free tool depends on what you're measuring, and the three main references complement each other. Search Console for SEO and indexing. GA4 for traffic and conversions. PageSpeed Insights for speed. Together, for free, they answer most of the questions that matter.

If you want a privacy-friendly alternative to GA4, Matomo has a free, self-hosted version. It's more technical to set up, but CNIL-compliant without complex configuration. France Num, the French government's digital support body for businesses, also recommends a structured evaluation approach. Their guide to evaluating your website (in French) is a good starting point.

Are free tools enough for a small business?

Yes, in the vast majority of cases. Paid tools become useful once you're managing multiple sites, tracking hundreds of keywords, or want to automate reporting to save time.

Here's how I think about it by profile.

The real cost of free tools isn't financial, it's time. Manually cross-referencing data from three different interfaces takes time and lets signals slip through. That's precisely when a unified dashboard becomes worth paying for, not before. Master the free tools before you pay for anything.

Prioritizing fixes with an impact/effort matrix

When an audit surfaces thirty or fifty issues, don't fix everything: sort each issue into an impact/effort matrix and start with the actions that are high impact and low effort.

This is where most business owners get overwhelmed. The list of fixes looks scary, nobody knows where to start, so nothing gets done. The impact/effort matrix breaks that paralysis into four simple quadrants.

• High impact, low effort: do these first, they're your quick wins. Compress images, fix an empty title tag, shorten a form.
• High impact, high effort: worth planning seriously. Redesign a product page, restructure the navigation menu.
• Low impact, low effort: do these if you have five spare minutes, no rush.
• Low impact, high effort: mostly ignore these. This is the perfectionist's trap, spending hours on something that changes nothing for sales.

The rule I apply: two to three high-impact actions pay off more than twenty micro-fixes. A fixed mobile menu beats thirty optimized image alt tags. Focus your effort where the money moves.

To estimate impact without expertise, ask yourself one simple question for each issue: "Does this affect a page that makes money?" A slow contact or checkout page matters ten times more than a slow legal notice page. This prioritization logic connects to the same thinking behind our 10 digital marketing KPIs to track when you run a small business, where the goal is also to measure less, but measure right.

On a recent project (an 8-person business services company), the audit surfaced 41 improvement points. We kept three: mobile speed, a simpler checkout flow, adding customer reviews. Three actions, 90 days, a clear rise in conversions. The other 38 points are still waiting, and that's fine.

Setting up regular tracking with Lysible

A website audit only has value if you repeat it: a one-time diagnosis goes stale within weeks, while monthly tracking catches traffic drops before they hit revenue. The problem, for a small team, is the time this tracking demands when data is scattered across Search Console, GA4, and speed tests. That's exactly what Lysible centralizes: the metrics from all four pillars in one dashboard, analyzed and connected automatically, with actionable recommendations. You make decisions without juggling tools or interpreting raw numbers alone, even without in-house technical skills.