PluginScout

F12 Profiler — WordPress Caching Plugin

by Forge12 Interactive GmbH · WordPress.org page · Website

v2.1.0 Tested up to WP 6.9.7 PHP 8.0+

F12 Profiler has 500+ active installs on WordPress.org and 48,120 downloads all time. We have tracked it since September 4, 2026; download trends appear after 30 days of data. The last update was on February 13, 2026, tested up to WordPress 6.9.7.

F12 Profiler at a glance

Active installs
500+
Total downloads
48,120
Downloads, last 30 days
–
available after 30 days of tracking
30-day growth
–
tracking since September 4, 2026

Is F12 Profiler well maintained?

Support threads resolved
0 of 1
recent threads on the WordPress.org support forum
WordPress compatibility
Behind
tested up to WordPress 6.9.7, not yet with the current 7.1

Features

The feature list from the plugin's own readme on WordPress.org, trimmed to the essentials.

  • Lazy Loading (images and iframes)
  • Font Display Optimization (font-display: swap/optional/fallback/block)
  • Script Defer Manager (automatic defer for scripts with exclusion list)
  • Auto Image Dimensions (prevents Layout Shifts / CLS)
  • HTML Minification (whitespace, comments, empty attributes)
  • CSS/JS Minification (file-based cache)
  • WordPress Bloat Removal (emojis, embeds, Dashicons, jQuery Migrate, XML-RPC, Heartbeat, and more)
  • Browser Cache (.htaccess-based)
  • DNS Prefetch & Preconnect (domain detection from asset scan)
  • Database Analysis (8 categories with detail view)
  • Autoload Manager (granular wp_options management)
  • Background Asset Scanner with conflict detection

F12 Profiler reviews and ratings

6 reviews on WordPress.org, with the most recent ones as their authors posted them.

All reviews
4.0 out of 5

6 reviews

5★
3
4★
2
3★
0
2★
0
1★
1

  • Very useful information

    I don't understand why this is not more popular, it gives you valuable insights in the system and where the chokepoints are. Great job!

    Larzans

  • Awesome plugin!

    Don't use P3 use F12-Profiler!

    wcobalt

  • Doesn't do anything

    Installed the plugin, nothing happens. No link in the admin bar, nothing in the admin menu, no new settings. Wasted my time.

    abrahambrookes

  • partially useful

    Plugin is working and I see some stats. However I have a certain plugin that's delaying all the pages with more than 10 seconds and there is no mention of it in the stats, everything looks fine there, but it's not.

    cardinalu

  • Excellent work!

    Great details. The only thing causing me to rate it as 4 stars and not 5 stars is missing a way to save the results to file. Add this and I'll change it to 5. Promise!

    wpkiller

  • Finally an alternative to P3

    Excellent! After P3 doesn’t work with PHP7+ anymore, F12 seems finally the one stepping in to fill that gap. Update [18-Jun-19]. After some small contributions of mine to the dev efforts, the plugin developer has decided to add me to the team, long after this review was written.

    alx359

Details

Comprehensive WordPress performance analysis with crawling, load time measurement, server diagnostics, and integrated optimization tools. Free.

The full description, screenshots and every review live on the WordPress.org page.

Rankings F12 Profiler competes in

Tags

  • cache
  • optimization
  • pagespeed
  • performance
  • speed

More from Forge12 Interactive GmbH

Version
2.1.0
Last updated
Feb 13, 2026
First published
Feb 27, 2019
Requires WordPress
6.0
Tested up to
6.9.7
Requires PHP
8.0
Pricing
Free on WordPress.org

F12 Profiler FAQ

What does F12 Profiler do?

According to its WordPress.org readme, F12 Profiler offers Lazy Loading (images and iframes), Font Display Optimization (font-display: swap/optional/fallback/block), Script Defer Manager (automatic defer for scripts with exclusion list), Auto Image Dimensions (prevents Layout Shifts / CLS) and HTML Minification (whitespace, comments, empty attributes).

How many active installs does F12 Profiler have?

WordPress.org reports 500+ active installs for F12 Profiler as of September 7, 2026.

Is F12 Profiler still maintained?

Yes. The last release was on February 13, 2026 and it is tested up to WordPress 6.9.7.

Does F12 Profiler have good support?

On the WordPress.org forum, 0 of 1 recent support threads for F12 Profiler are marked resolved. That is the developer's free support; a paid version usually comes with its own channel.

Is F12 Profiler free?

F12 Profiler is free to install from WordPress.org. Many plugins also sell a paid version or add-ons.