If you are looking for how to improve WordPress Site Health Score in the simplest way, few popular plugins can help you fix most issues instantly. Below are the top plugins that directly address Site Health warnings and improve your website’s speed, security, backups, database optimization, and overall performance.

1. Health Check & Troubleshooting (Free)

Fixes: General issues, plugin conflicts, outdated PHP warnings

How to use:

1. Install → Plugins → Add New → Search “Health Check & Troubleshooting”.
2. Activate the plugin.
3. Go to Tools → Site Health.
4. Check “Status” for critical issues & “Info” for server details.
5. Enable Troubleshooting Mode to test plugins/themes safely without breaking your live site.

✅ Best for finding hidden problems quickly.

2. LiteSpeed Cache (Free, WP Rocket is premium alternative)

Fixes: Slow site speed, caching issues, Core Web Vitals

How to use:

1. Install LiteSpeed Cache from the WordPress repository.
2. Go to LiteSpeed Cache → General Settings → Enable Cache.
3. Under Page Optimization, enable:
   • CSS & JS Minify
   • Image Lazy Load
   • Browser Cache
4. Connect to QUIC.cloud CDN for faster delivery worldwide.

✅ Expect a 30–60% improvement in speed scores.

3. Really Simple SSL (Free)

Fixes: “Your site is not using HTTPS” warning

How to use:

1. Install Really Simple SSL.
2. Activate it → It auto-detects SSL and enables HTTPS redirects.
3. Clear cache (via LiteSpeed or WP Rocket).
4. Check your site URL — it should now load with https://

✅ Fixes security & SEO trust signals instantly.

4. Wordfence Security (Free, Pro available)

Fixes: Site Health security warnings, brute-force attacks, malware

How to use:

1. Install Wordfence Security.
2. Run the Initial Setup Wizard.
3. Enable Firewall → Learning Mode → Extended Protection.
4. Turn on Scheduled Scans to automatically scan for malware.

✅ Protects your site + removes most “critical security issue” warnings.

5. WP-Optimize (Free)

Fixes: Large database size, performance issues

How to use:

1. Install WP-Optimize.
2. Go to WP-Optimize → Database.
3. Tick options:
   • Clean post revisions
   • Remove spam & trashed comments
   • Optimize tables
4. Click Run All Selected Optimizations.

✅ Speeds up queries and reduces server load.

6. UpdraftPlus (Free, Pro available)

Fixes: “No scheduled backups” warning in Site Health

How to use:

1. Install UpdraftPlus.
2. Go to Settings → UpdraftPlus Backups.
3. Choose cloud storage (Google Drive, Dropbox, OneDrive).
4. Set a schedule: Daily/Weekly backups.
5. Run your first backup manually.

✅ Ensures your site is always safe from crashes or hacks.

7. Smush – Image Compression (Free)

Fixes: “Unoptimized images” warning, slow page loads

How to use:

1. Install Smush Image Optimization.
2. Run the Bulk Smush to compress all existing images.
3. Enable Lazy Loading (reduces loading time).
4. Turn on Automatic Compression for future uploads.

✅ Cuts image size by 30–70% without losing quality.

8. Enable jQuery Migrate Helper (Temporary Fix)

Fixes: Errors after upgrading WordPress or PHP due to old plugins/themes

How to use:

1. Install Enable jQuery Migrate Helper.
2. It automatically restores compatibility with old scripts.
3. Only use this until you update or replace outdated plugins/themes.

✅ Useful when updates break your site health temporarily.

Recommended Plugin Setup for Beginners

If you don’t want plugin overload, this minimal stack will cover almost everything:

• LiteSpeed Cache → Speed & performance
• Really Simple SSL → HTTPS/SSL setup
• Wordfence Security → Protection & firewall
• WP-Optimize → Database cleanup
• UpdraftPlus → Backups

Optional: Smush for images, Health Check for debugging

Final Action Plan

1. Install the recommended plugins.
2. Run their initial setup following the steps above.
3. Clear cache and recheck Tools → Site Health.
4. Your score should jump from “Needs Improvement” → “Good”.