CAOS | Host Google Analytics Locally


CAOS (Complete Analytics Optimization Suite) for Google Analytics allows you to host analytics.js/gtag.js locally and keep it updated using WordPress’ built-in Cron-schedule. Fully automatic!

Not a big Google Analytics user and just curious about your pageviews? CAOS fully supports Minimal Analytics, which is basically Google Analytics Lite. An extremely lightweight alternative Google Analytics’ default libraries (analytics.js/gtag.js). Minimal Analytics also helps you get rid of that annoying Unused JS notice in Google PageSpeed Insights!

Whenever you run an analysis of your website on Google Pagespeed Insights, Pingdom or GTMetrix, it’ll tell you to leverage browser cache when you’re using Google Analytics. Because Google has set the cache expiry time to 2 hours. This plugin will get you a higher score on Pagespeed and Pingdom and make your website load faster, because the user’s browser doesn’t have to make a roundtrip to download the file from Google’s external server.

Just install the plugin, enter your Tracking-ID and the plugin adds the necessary Tracking Code for Google Analytics to the header (or footer) of your theme, downloads and saves the analytics.js/gtag.js-file to your website’s server and keeps it updated (automagically) using a scheduled script in wp_cron(). CAOS is a set and forget plugin.

Please keep in mind that, although I try to make the configuration of this plugin as easy as possible, the concept of locally hosting a file or optimizing Google Analytics for Pagespeed Insights or GT Metrix has proven to be confusing for some people. If you’re not sure of what your doing, please consult a SEO expert or Webdeveloper to help you with the configuration of this plugin. Or hire me to do it for you.

For more information: How to setup CAOS.


  • Host analytics.js or gtag.js locally (What’s the difference?),
  • Minimal Analytics support,
  • Endlessly extensible using the integrated filters and available mini plugins! E.g. track Google Adwords conversions and much, much more!
  • Bypass Ad Blockers in Stealth Mode: Sneak past Security and protect your Google Analytics data,
    • Plugins (e.g. linkid.js) are also served from a local source when in Stealth Mode!
    • CAOS Super Stealth Upgrade adds compatibility with Enhanced Ecommerce (ec.js) and Analytics’ Ecommerce Features (ecommerce.js).
  • Preconnect to to reduce latency and speed up requests,
  • Send an event to your Google Analytics dashboard when a visitor is viewing your pages using an Ad Blocker,
  • Capture outbound links,
  • Integrate Google Optimize,
  • Enhanced link attribution,
  • Allow tracking always or only when a certain cookie exists or has a value — Read more about GDPR Compliance,
  • Add tracking code to header, footer or manually,
  • Load the tracking snippet Asynchronous or Default (Synchronous)
  • Fully compatible with Google Analytics Dashboard Plugin for WP by MonsterInsights, WooCommerce Google Analytics Integration, Google Analytics Dashboard Plugin for WP by Analytify and Google Analytics Dashboard for WP by ExactMetrics,
  • Save analytics.js/gtag.js anywhere within the WordPress content (wp-content) directory to avoid detection by WordPress security plugins (such as WordFence) or removal by caching plugins (such as WP Super Cache),
  • Serve analytics.js/gtag.js from your CDN,
  • Set Cookie Expiry Period,
  • Set Adjusted Bounce Rate,
  • Change enqueue order (prioritize order of loaded scripts),
  • Enable Enhanced Link Attribution (linkid.js),
  • Force disabling display features functionalities,
  • Anonymize IP addresses,
  • Track logged in Administrators,
  • Manually update analytics.js/gtag.js with the click of a button!


  1. Upload the plugin files to the /wp-content/plugins/host-analyticsjs-local directory, or install the plugin through the WordPress plugins repository directly.
  2. Activate the plugin through the ‘Plugins’ screen in WordPress
  3. Use the Settings -> Optimize Google Analytics screen to configure the plugin


I have another file I want to host locally. Could you make a plugin?

Maintaining three plugins besides my daily 9-to-5 job is a handful, so no. If you’re looking for a way to host Google Webfonts locally; please install OMGF.. To host other 3rd party scripts and styles locally, try HELL. For WordPress Speed Optimization, check out WoOSH!

Why am I getting an Unused JS notice on Google PageSpeed Insights for analytics.js/gtag.js?

Google Analytics offers two code libraries: analytics.js and gtag.js. A library offers easy implementation of a certain application, but this wide compatibility range comes at a cost: it probably contains a bunch of code you don’t even need.

If you are a light-weight Google Analytics user, you can enable Minimal Analytics in CAOS’ Basic Settings: Settings > Optimize Google Analytics > Basic Settings > Snippet Type: Minimal Analytics.

Minimal Analytics is fully compatible with Stealth Mode.

CAOS says analytics.js/gtag.js isn’t updated in more than two days. What’s going on?

This is due to server configuration. Probably a permissions issue. It might be that PHP/WordPress isn’t allowed to create files programmatically. If you can upload media files just fine, then this probably isn’t the issue. Is your cron running? Try clicking the ‘update analytics.js/gtag.js’ option to update the file manually. Meanwhile, contact your hosting provider so they can help you figure out if your cron is running correctly.

Can the gtm/js file used by Google Optimize be hosted locally?

No, it can’t. The gtm/js (or gtm.js) file is generated using a Client ID, which is unique for each visitor of your site. Saving this file locally would break your A/B tests.

I have disabled the plugin, but the Google Analytics tracking code is still added to the page. What’s going on?

This question has been asked on the support forum lots of times and in ALL cases it was caused by a Full Page Caching plugin, such as WP Fastest Cache or WP Super Cache, or another caching mechanism, such as Varnish. Possibly the page containing the snippet was cached in its entirety, and that cached version is still loading. Try flushing the plugin’s cache and empty your browser’s cache. Then reload the page.

After installing this plugin I’m getting a ‘Load resources from a consistent URL’-error on Google Pagespeed or GT Metrix. How can I fix this?

CAOS adds a modified version of the Google Analytics tracking code to your header or footer, depending on your settings. If you’re getting this notification (or optimization suggestion) this means that besides the GA tracking code added by CAOS, you’re also loading a second tracking code somewhere else in your blog. Possibly in your theme’s options or by another Google Analytics plugin. Remove/disable this and you’re good to go.

Is this plugin GDPR compliant?

Yes, it is! It is compatible with all WordPress Cookie Notice plugins which either set a cookie to allow tracking or set a certain value to a cookie to allow tracking. It’s completely customizable!

Google Tag Assistant says analytics.js is missing. Is this normal?

Yes, this is normal. This browser extensions looks for this exact string ‘’. Because with CAOS you’re hosting it locally, Tag Assistant doesn’t find this string and returns an error. However, you can still use Tag Assistant to verify tracking works.

Is CAOS compatible with WooCommerce?

Yes, it is! CAOS is compatible with several Google Analytics plugins for WooCommerce.

I use WP Super Cache / W3 Total Cache or another Caching and/or Minification plugin. Why is it removing analytics.js when I flush my cache?

This happens because analytics.js is saved within the ‘cache’-folder and for some reason the cache/minify plugin thinks it should be refreshed. Change the path where analytics.js is saved within CAOS to a path outside the /uploads/ folder (e.g. /uploads/caos/). This should resolve any issues you’re having.

WordFence (or another security plugin) is detecting file changes in analytics.js/gtag.js. What’s going on?

This is perfectly normal, since this is the file that was updated by the built-in cronjob in older versions of CAOS. Update to the latest version and change the path where analytics.js is saved within CAOS to a path which is ignored by your security plugin (e.g. /uploads/ or /cache/). This should resolve any issues you’re having.

What is the current update interval of the Analytics-script?

I have set it to twice daily, because Google updates the script very often. If you suspect you might’ve gotten behind (which I doubt) Run a manual update button within CAOS’ settings.

I disabled Demographic Reports in Google Analytics, but the script is still redirecting to How do I turn this off?

Try enabling the option called “Disable all display features functionality?” With this you can enforce the disabling of the DisplayFeatures plugin.

I’ve installed your plugin but analytics.js/gtag.js is still showing up as an external request in Pingdom e.a.?

CAOS adds a local file called gtag.js/analytics.js/gtag.js (depending on your choice), which enables you to use Analytics, while hosting the necessary files locally. This doesn’t mean that it scans your entire plugins or themes directory for other manually/programatically added Analytics tracking-code. I.e. If analytics.js is still showing up in the list of requests, this mean that something else (probably the theme you’re using or another plugin) is adding this tracking code to your WordPress Install. Find it. Remove it. And let CAOS take care of sending your needed data to Google Analytics.

I use a CDN. Can I use CAOS in combination with my CDN?

Yes, you can! Simply add the URL of your CDN within the advanced options and analytics.js/gtag.js will be served from your CDN.


شتنبر 21, 2020
Greatly increases your performance and decreases your load time. Literally has all the features which I was looking for.
شتنبر 19, 2020
Gtmetrix PageSpeed score for my website was stuck to 99% due to Google Analytics (external) script. Finally got your plugin idea from Kinsta blog & it's work perfectly.
شتنبر 14, 2020
Struggled for ages to improve site speed due to google analytics slowing it down significantly. I use Google analytics a lot, so removing it wasn't my preferred option. Tried various plugins (Monster insights, Exact metrics) and directly inserting analytics tag in header or footer with minimal if any improvements. This plugin has done the job brilliantly. No fuss settings made it very quick to get going, and page speeds now much better. PageSpeed Insights, GTmetrix, WebpageTest all giving excellent scores 95-99% and LCP under 1 sec. Very happy, Thank you!
Read all 94 reviews

Contributors & Developers

“CAOS | Host Google Analytics Locally” is open source software. The following people have contributed to this plugin.


“CAOS | Host Google Analytics Locally” has been translated into 1 locale. Thank you to the translators for their contributions.

Translate “CAOS | Host Google Analytics Locally” into your language.

Interested in development?

Browse the code, check out the SVN repository, or subscribe to the development log by RSS.



  • Last update broke Minimal Analytics. Sorry, guys. This fixes it.

3.7.6 | August 26th, 2020

  • Slowly recovering from extreme sleep deprivation. 😉
  • Updated custom script attributes filter to work with re-factored templating methods.
  • Minor code optimizations in templates.
  • Fixed bug where in some situations the Google Analytics disable script (When cookie is (not) set, etc.) wouldn’t load.


  • Set default value of Cookie Expiry to 30 days to prevent multiple sessions from the same IP.


  • Tested with WP 5.5.
  • Re-added custom attribute filters for compatibility. Sorry, Aert!
  • Minor re-factors.


  • Fixed bug where tracking code wouldn’t render when Add Manually was selected under Basic Settings.
  • Fixed bug where the Basic Settings tab would be tracked in Google Analytics.
  • Minimal Analytics no longer depends on jQuery.


  • jQuery is no longer used in the frontend (e.g. for Track Ad Blockers option).
  • Fixed bug where Track Ad Blockers wouldn’t work with gtag.js.
  • Replaced jQuery in frontend with vanilla JavaScript to avoid conflicts with JS optimization plugins.


  • Fixed bug where Minimal Analytics wouldn’t run if gtag.js was previously set as remote JS file.

3.7.0 | August 9th, 2020

  • My daughter, Emma, is exactly one month old now!
  • Track Ad Blockers events are now sent after the Pageview is sent. Fixing the bug for it to create sessions instead of pageviews.
  • Added Minimal Analytics support to allow (light-weight) users to get rid of that nasty Unused JS notice in Google PageSpeed Insights.
    • This option can be enabled in Basic Settings > Snippet Type.
  • Fixed event category and label for Adjusted Bounce Rate for gtag.js.
  • Moved Capture Outbound Links and Adjusted Bounce Rate options to Extensions tab.
  • Moved Track Logged In Administrators? and Anonymize IP to Basic Settings tab.
  • Added Outbound Link Tracking support for gtag.js.
  • Outbound Link Tracking script is now loaded in line, to prevent blocking by Ad Blockers.
  • Dropped Stealth Mode support for gtag.js, because it has become unusable after an update of Global Site Tag. Will research the possibility of re-adding it.
    • gtag.js will load analytics.js from from now on.
  • CAOS now uses the same autoloader as OMGF (or other WoOSH! plugins — if installed) removing overhead and effectively increasing performance.
  • Added release dates to the changelog. 🙂

3.6.0 | June 27th, 2020

  • CAOS now throws a notice if an Ad Blocker is enabled on CAOS’ admin screen, because Ad Blockers block any URL with ‘analytics’ in it, e.g. host-analyticsjs-local, which’ll cause manual updates to not work properly.
  • Added feature to send a custom event to Google Analytics when a page is viewed with an Ad Blocker enabled.
  • DNS-prefetch resource hint to is now added automatically when Stealth Mode is disabled.
  • Changed CAOS’ default cache-path to /uploads/caos/
  • Minor refactors and code optimizations.

3.5.3 | May 29th, 2020

  • UX improvements and better notices.
  • Updated FAQ.

3.5.2 | May 15th, 2020

  • Some options in extensions tab are now hidden when Compatibility Mode is enabled.
  • Run cron twice daily to prevent schedule misses.

3.5.1 | May 12th, 2020

  • Added clearer descriptions for some settings in the Extensions tab.
  • Added more filter and action hooks.
  • Added fix for SameSite cookie policy for analytics.js and gtag.js. It’s not yet supported for linkid.js.

3.5.0 | April 26th, 2020

  • Plugins (e.g. linkid.js or ec.js) are now handled twice as fast with the new Extensions > Plugin Handling option set to Experimental Mode.
    • Mind you that loading ec.js in Stealth Mode requires CAOS Super Stealth Upgrade to work.

3.4.4 | April 21st, 2020

  • It’s my 35th birthday!
  • Added polyfill for is_plugin_active to fix Fatal Errors in certain WordPress configurations.

3.4.3 | April 20th, 2020

  • [HOTFIX] Fix for Fatal Error: Call to undefined function get_plugins().


  • Added notices for settings incompatible with (Super) Stealth Mode to increase UX.
  • CAOS Super Stealth Upgrade now supports gtag.js.
  • Minor code optimizations.


  • Fixed syntax errors in sidebar.

3.4.0 | April 19th, 2020

  • Code improvements for setting screen.
  • Added support for Enhanced Link Attribution (also works with (Super) Stealth.)
  • Added more filters and hooks for developers to extend CAOS.
  • Added support for Google Optimize (not compatible with Stealth Mode, and plugin file is not hosted locally, because file differs per user).
  • Fixed bug where notices would sometimes be displayed twice.
  • Added several notice to improve UX.

3.3.7 | April 8th, 2020

  • Added filter hooks for when Stealth mode is enabled/disabled, to improve UX.
  • Added filter hooks for tweet and review link, to improve UX.


  • Possible fix for Cron issues.


  • HOTFIX: Stealth Mode filter to be used for Super Stealth Mode.

= 3.3.4 | April 4th, 2020=
* Stealth Mode now respects the Anonymize IP setting.
* Added some notices and reminders when some settings are changed, to improve UX.
* Notices are now grouped.
* When an update of the JS library is required after changing the settings, you will now be notified.

3.3.3 | March 27th, 2020

  • Added tabs in Settings to comply with WordPress plugin conventions == major code clean-up.

3.3.2 | March 23rd, 2020

  • Admin screen is now responsive.
  • Sidebar scrolls on larger screens.


  • Fixed bug of paths to JS files for Capture Outbound Links and Admin JS.

3.3.0 | March 22nd, 2020

  • Added new notices interface. Notices are now dismissible and CAOS now throws a global notice to notify you of issues with your analytics/gtag file.
  • Revamped settings screen with toggleable interface.

3.2.0 | January 31st, 2020

CAOS can now preconnect to and CDN URL (if set).

3.1.3 | January 21st, 2020

Do not output success message when update-script is executed by CRON.
Added extra filter to allow further manipulation of the analytics.js tracking code.

3.1.2 | January 8th, 2020

Added filters on script elements.

3.1.1 | January 7th, 2020

CAOS now throws a notice if cURL is disabled on the server.

3.1.0 | January 5th, 2020

Added filter to add additional configuration using the gtag tracking snippet. Updated readme.txt.

3.0.1 | January 3rd, 2020

Fixed bug where using Adjusted Bounce Rate would trigger two pageviews.


Major code overhaul. Major performance improvements.


Further improvements for downloading of analytics.js.


Fixed minor ‘ga is not defined’-bug when user is logged in.


Track outbound links doesn’t work when Stealth Mode is enabled. Added additional verification in settings form.


Forgot to add caos-frontend.js to SVN before committing previous version.


Tested with WP 5.3. Added new feature to track outbound links.


Replaced file_get_contents() and with cUrl to make CAOS compatible with servers that have allow_url_fopen disabled.


Code optimizations: the tracking code snippets can now be modified using add_filter(). CAOS’ own settings are also added using those filters.


Major overhaul of code to minimize plugin size and maximize performance.
[BUGFIX] the origin User-Agent is now passed to Google Analytics, instead of ‘WordPress’.


Severely improved performance of update-analytics script.


Apparently some servers require to die() after setting a location header in PHP.


Forgot a slash.


Damn Subversion. Had to add new file to versioning.


Stealth Mode now also works for Google Analytics Enhanced Link Attribution plugin.


Optimized Javascript.


UX improvements in Settings-area. Code re-factors.


Bugfix for ‘when cookie is set’-option. Added ‘when cookie is NOT set’-option. Code optimization for ‘when cookie has value’-option.


Bugfix for detecting user’s location when Stealth Mode is used.


Added new feature: Stealth Mode allows you to Bypass Ad Blockers and protects your Google Analytics data.


Code optimizations. Preparations for really cool (still secret) new feature!


Added compatibility with WooCommerce Google Analytics Integration!


Fixed ‘getCookieValue() is not a function.’-bug when using ‘Allow tracking’ options.


Fixed a bug where sometimes the default tracking code wasn’t loaded correctly.


CAOS can now be properly translated.


Added support for asynchronous loading of the snippet.


When using the gtag.js wrapper, the request to analytics.js is now also loaded from a local source!
Added link to explain differences between analytics.js and gtag.js.


Oops! Forgot some strings!


Added translations and text domain according to WordPress’ requirements.


Changed name back to CAOS, because OMGF has its own shorthand now.


Added compatibility mode for Google Analytics Dashboard for WP by ExactMetrics. If you’re using any compatibility mode, the settings path has changed, so you need to set it again.


The cache-file and folder are now removed at plugin uninstall.


Added uninstall option and script.


Fixed minor console error


Fixed Adjusted Bounce Rate for gtag.js.


Fixed bug where sometimes wp-content directory wasn’t detected correctly.


Support for gtag.js added. Minor code optimizations.


Added option to cache ga.js locally, instead of analytics.js.


Updated Welcome Panel


Added CDN support


Changed URLs to new home:


Added compatibility with Analytify for WordPress.


Added extra checks for PHP intl-module, which apparently isn’t enabled by default on all servers.


Bugfix for display of formatted Date/Time.


Fallback for servers who don’t have certain PHP date-modules installed.


Status bar now displays a date/time formatted according to locale chosen in WordPress.


Added status bar display cron and file health.


CAOS is now compatible with WordPress Multi Site.


Tested with WP 5+


Fixed bug where settings couldn’t be saved.


Refactored code for includes to increase compatibility. Code optimizations. Renamed tasks to reflect code and name changes. Changed menu slug to reflect name changes.


Finally rid of the ugly versioning. Added settings link to plugins overview.


Compatibility fix for PHP versions lower than 5.4.


Added option to change the directory where analytics.js is saved — relative to WordPress’ content directory (usually wp-content).


Fixed directory creation error. Removed notice from admin-screen, because it caused bugs on some systems.


Moved analytics.js to wp-content/cache to maximally optimize compatibility with WordPress security plugins.

1.91 / 1.92

Updated readme.txt. Refactored code and minor improvements.


Renamed local-ga.js to WordPress’ upload-directory and renamed it to analytics.js to make the file more recognizable for less experienced users.


Code optimizations and added function to trigger the update script manually.


Fixed bug where manually add tracking code wouldn’t show the tracking snippet.


Minor usability fixes.


Replace relative paths with absolute paths.


MAJOR UPDATE & Name change
Changed the name from Complete Analytics Optimization Suite to CAOS for Analytics. Because it’s cooler IMO.
CAOS is now compatible with Google Analytics by Monster Insights. This allows users of e-Commerce platforms such as WooCommerce to also locally host their analytics.js-file!


To improve compatibility with other plugins and themes, I added an option to add the snippet manually. So e.g. it can be added to a theme’s ‘custom head’ field or blocked until a Cookie Notice is approved.


UX optimizations in Admin-screen. Major code optimizations.




Code optimizations.


Fixed bug in admin-screen, where new options weren’t always shown.
Code optimizations.


To maximize compatibility with other GDPR plugins I’ve added the option to choose whether to allow tracking when a certain cookie is set or when it has a certain value. Otherwise tracking will not be allowed.


Moved to Github.


Fixed important bug where cookie value wasn’t read correctly, if user rejected cookies.
Code optimizations


Minor usability improvements.


Minor coding/performance/usability improvements.

1.53 – BUGFIX

Fixed important bug which would render the entire plugin useless if GDPR Compliance was disabled.

1.51 – Quickfix

Added an option which explicitly enables/disables all GDPR functions.

1.50 – New Features

Added options to make CAOS GDPR compliant. Thanks, Peter from Applejack!
Minor optimizations and bugfixes.
Updated readme.txt to reflect GDPR compliance.


Updated FAQ.
Tested with latest WP versions.


Added feature to specify URL to CDN.
Updated readme.txt.


Added feature to disable DisplayFeatures plug-in, because sometimes disabling it from the Google Analytics options-panel isn’t enough.


Version change, to push it through the auto-updater in WordPress.

1.40 – New Features

Added the option for tracking administrators. It completely disables the code for WordPress administrators i.e. your other logged in users will still be tracked. Made the plugin fully translatable. Did some code optimizations.

PS. Just figured out I should’ve never used 1.36, as SVN now thinks 1.4 is an older version. So here we go, version 1.40 (Bluegh! I’ll do it right once we hit 2.0)

1.36 – Bugfixes

With new features comes great responsibility. My German neighbor Denis Abendroth was so kind to point out that the anonymize IP option was added in the wrong order in the tracking code. So I fixed it immediately!

1.35 – New Features

This update features the much requested Anonymize IP (@arcticblue, thanks for your help!), which is now added to the options panel. Besides that I optimized the code a bit, removing about 5 lines of code.

1.32 – New Features

Added option to change the enqueue order of the tracking code. That way the user can decide the priority of the tracking code.

1.31 – Bugfixes

Fixed the Adjusted Bounce Rate issue: when enabled it breaks the tracking. I have made some code-changes that should fix this issue, according to the script provided by @BrianLeeJackson (Thnx for your help!)

1.3 – New Features

Added option for adjusted bounce rate
Added option for loading Analytics Tracking ID in footer


Replaced short PHP-tags with regular ‘<?php’ to increase compatibility. (Thanks for the tip @burhandodhy!)


Updated readme.txt and some minimal code changes to increase UX.


First release! No changes so far!