F12 Profiler — WordPress Caching Plugin
by Forge12 Interactive GmbH · WordPress.org page · Website
F12 Profiler has 400+ active installs on WordPress.org and 48,696 downloads all time. It was downloaded 381 times in the last 30 days. The last update was on February 13, 2026, tested up to WordPress 6.9.10.
F12 Profiler at a glance
Is F12 Profiler well maintained?
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.
6 reviews
- 5★
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3
- 4★
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2
- 3★
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0
- 2★
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0
- 1★
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1
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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
Download and install history
598 downloads over the last 48 days. Snapshots taken daily from WordPress.org.
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
-
SilentShield 10,000+ installs -
Double Opt-In 1,000+ installs -
F12 Floating Menu 300+ installs -
Forge12 Accessories for WooCommerce 80+ installs
- Version
- 2.1.0
- Last updated
- Feb 13, 2026
- First published
- Feb 27, 2019
- Requires WordPress
- 6.0
- Tested up to
- 6.9.10
- 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 400+ active installs for F12 Profiler as of October 22, 2026.
Is F12 Profiler still maintained?
Yes. The last release was on February 13, 2026 and it is tested up to WordPress 6.9.10.
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.