How to Audit Your WordPress Website (And Fix What You Find Without a Developer)

Quick Answer: A WordPress website audit covers four areas: performance (image sizes, caching, render-blocking scripts), security (SSL, plugin updates, security headers), SEO (meta tags, broken links, crawlability), and mobile UX. Most issues can be fixed with free plugins — Smush for images, WP Super Cache for caching, Yoast SEO for meta tags, and Really Simple SSL for HTTPS. Run a full audit at unsnag.tech in 60 seconds.

WordPress powers about 43% of all websites — which means it also powers about 43% of all slow, broken, poorly-optimised websites.

Running an audit on your WordPress site is easier than most people think. Acting on the results? That's where people get stuck — between a list of technical issues and actually fixing them.

This guide covers:

The most common issues found on WordPress sites
How to run a proper audit (free tools included)
How to fix the most common problems — using specific WordPress plugins and settings, step by step

No developer required for most of this.

Run a free WordPress audit in 60 seconds → unsnag.tech

What a WordPress Website Audit Actually Checks

A proper audit covers four areas:

Performance — How fast does your site load? What are your Core Web Vitals scores? Where are the bottlenecks?

Security — Is your SSL certificate valid across all pages? Are your WordPress core, plugins, and themes up to date? Are there any obvious vulnerability signals?

SEO — Are your pages crawlable? Do you have proper meta titles and descriptions? Are there broken links, duplicate content, or missing structured data?

Mobile — Does your site render correctly on small screens? Are touch targets large enough? Is content accessible without horizontal scrolling?

WordPress-specific issues that come up most often:

Plugin bloat slowing load times (too many poorly-coded plugins)
Large, uncompressed images (WordPress doesn't auto-optimise on upload by default)
Missing caching (WordPress generates HTML dynamically — without caching, this is slow)
Outdated plugins or themes (security risk, often performance risk too)
Non-HTTPS mixed content (SSL installed but some resources still load over HTTP)

How to Run a WordPress Website Audit

Option 1: Use Unsnag (recommended for non-technical users)

Go to unsnag.tech, enter your URL, and get a full audit in 60 seconds. Unsnag detects that you're on WordPress and generates fix instructions specific to WordPress — plugins to install, settings to change, steps to follow.

It covers performance, security, SEO, and mobile in one report. The free plan gives you a full audit with an AI Performance Report explaining each issue in plain English.

Option 2: Use Google PageSpeed Insights (performance-focused)

Free tool from Google. Go to pagespeed.web.dev, enter your URL. Shows your Core Web Vitals scores and performance issues. Does not cover security, SEO completeness, or mobile UX. Fix instructions are developer-focused and can be hard to act on without technical knowledge.

Option 3: Manual checklist (time-consuming but thorough)

Use multiple free tools:

Google PageSpeed Insights — performance
Google Search Console — search visibility, crawl errors
Ahrefs Webmaster Tools / Semrush free tier — SEO basics
SSL Labs (ssllabs.com/ssltest) — security certificate check
Wave (wave.webaim.org) — accessibility basics

Manual approach takes 2–3 hours and requires stitching results together yourself. Useful for periodic deep audits; not practical for regular monitoring.

The 7 Most Common WordPress Issues (And How to Fix Them)

1. Large, Uncompressed Images Slowing Your Site

What it looks like: Load time over 3 seconds. PageSpeed shows "Serve images in next-gen formats" or "Properly size images."

Fix: Install Smush (free in the WordPress plugin directory). Run "Bulk Smush" to compress all existing images. Enable WebP conversion. New uploads will auto-compress going forward.

Takes 10–15 minutes. Expected result: 20–40% improvement in page load time.

2. No Page Caching

What it looks like: Consistently slow Time to First Byte (TTFB). Site runs slowly even on fast internet connections.

Fix: Install WP Super Cache or W3 Total Cache (both free). Enable page caching in settings. For most WordPress sites, this alone cuts load time by 40–60%.

Takes 15 minutes to set up.

3. Render-Blocking JavaScript and CSS

What it looks like: PageSpeed shows "Eliminate render-blocking resources." Multiple third-party scripts loading before the page content appears.

Fix: Enable "Defer JavaScript" in your caching plugin (W3TC, WP Rocket, and LiteSpeed Cache all have this option). For more advanced optimisation, WP Rocket ($49/year) handles this automatically and is worth it for business sites with more than a few hundred visitors per month.

Basic version: 5 minutes. Full optimisation: 30–60 minutes.

4. Missing or Auto-Generated Meta Descriptions

What it looks like: Google is displaying ugly, auto-generated text in search results. Pages missing from Google results entirely. Low click-through rates despite reasonable rankings.

Fix: Install Yoast SEO (free) or Rank Math (free). Go to each important page and fill in the "Snippet" section with a custom title and description.

Title: 50–60 characters
Description: 120–160 characters — make it a reason to click, not just a description

15–30 minutes for key pages.

5. SSL Not Covering All Pages (Mixed Content)

What it looks like: Browser shows "Not Secure" on some pages despite having SSL installed. Some resources (images, scripts, stylesheets) still load over HTTP instead of HTTPS.

Fix: Install Really Simple SSL (free). It automatically forces HTTPS across your site and fixes most mixed content issues. After activation, clear your cache.

5 minutes.

6. WordPress Core, Plugins, or Themes Out of Date

What it looks like: Dashboard shows "Update available" notices. Plugin or theme versions more than 6 months behind current releases.

Fix: Go to Dashboard → Updates → Update all. After updating, check your site still works correctly (most updates are safe, but occasionally a plugin update causes a conflict). Set up automatic updates for minor WordPress releases in Dashboard → Updates.

Review your installed plugins: if you have plugins you no longer use, deactivate and delete them. Inactive plugins still represent a security risk if they're not updated.

30–60 minutes initial clean-up; 5 minutes monthly ongoing.

7. Broken Internal Links

What it looks like: Visitors landing on 404 pages. Google Search Console showing "Not found" errors. Drop in organic traffic from pages that used to rank.

Fix: Install Broken Link Checker plugin to identify all broken links. For broken internal links, either update the URL to the correct destination or set up a 301 redirect using the Redirection plugin (free).

Variable — depends on how many are found.

How to Keep Your WordPress Site Healthy Long-Term

A one-time audit is a starting point. Your site changes constantly — new content, plugin updates, theme changes, new media uploads. Issues that didn't exist last month can appear after any update.

Options for ongoing monitoring:

Unsnag Pro ($29/month): Weekly automated audits, email alerts when something changes, AI Performance Report re-generated on each scan. Detects WordPress-specific issues and gives you plugin-level fix instructions.

Google Search Console (free): Good for crawl errors and search performance tracking. Misses performance and security signals. Essential but not sufficient on its own.

Uptime monitor (many free options): Catches site-down events but not technical health degradation.

For most small business owners, Unsnag's weekly monitoring plus Google Search Console covers 80% of what you need to know — without spending hours running manual checks.

Quick Reference: 7 Most Common WordPress Issues

Issue	Free Fix	Time
Large images	Smush plugin	15 min
No caching	WP Super Cache	15 min
Render-blocking scripts	Enable defer in cache plugin	5–30 min
Missing meta descriptions	Yoast SEO / Rank Math	15–30 min
Mixed content / SSL	Really Simple SSL	5 min
Outdated plugins	Dashboard → Updates	30–60 min
Broken links	Broken Link Checker + Redirection	Variable

The Bottom Line

Auditing a WordPress site takes less than 5 minutes with the right tool. Acting on the results takes a few hours of focused work — most of it installing and configuring the right free plugins.

The bigger risk for most business owners is not running an audit at all. Issues compound: slow sites lose visitors, who don't become leads, who don't become customers.

For more on what to check in a full SEO audit, see our website speed check guide.

Run your free WordPress audit now →

Related reading:

Frequently Asked Questions

How do I audit my WordPress website? The quickest option is to run a free Unsnag audit at unsnag.tech — it detects WordPress automatically and generates plugin-specific fix instructions for the issues it finds. For a manual audit, combine Google PageSpeed Insights (performance), Google Search Console (SEO and crawl errors), SSL Labs (security certificate), and Screaming Frog (broken links and technical SEO). This manual approach takes 2–3 hours versus 60 seconds with Unsnag.

What are the most common WordPress website problems? The top issues found on WordPress sites are: large uncompressed images (often the biggest performance bottleneck), missing page caching (WordPress generates pages dynamically without it), outdated plugins or themes (the primary security vulnerability), missing or auto-generated meta descriptions (hurts search click-through rate), mixed content from SSL misconfiguration, and broken internal links from deleted or moved pages.

How do I speed up my WordPress website? The highest-impact steps in order: (1) Install an image compression plugin like Smush and run bulk compression on existing images. (2) Install a caching plugin like WP Super Cache or W3 Total Cache. (3) Enable a CDN — Cloudflare's free tier is sufficient for most small business sites. (4) Audit your installed plugins and remove anything you're not actively using. (5) Upgrade your hosting if your server response time (TTFB) is over 600ms.

Is it safe to update WordPress plugins? Yes — keeping plugins updated is one of the most important security practices for WordPress sites. The vast majority of updates are safe. Best practice is to take a backup before running updates, then update plugins one at a time (or all at once if you're confident) and verify your site still works correctly. The risk of running outdated plugins significantly outweighs the minor risk of an update causing a conflict.

How often should I audit my WordPress website? Run a full audit once per quarter at minimum. Additionally, run an audit immediately after major changes: installing new plugins, switching themes, migrating hosting, or running a WordPress major version update. Automated monitoring (available on paid Unsnag plans) catches issues as they arise rather than waiting for your next manual audit cycle — useful if your site changes frequently or if SEO traffic is important to your business.