Title: Optimazz – Website Optimization and Speedup
Author: Shipon Karmakar
Published: July 21, 2026
Last modified: July 21, 2026
---
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# Optimazz – Website Optimization and Speedup
By [Shipon Karmakar](https://profiles.wordpress.org/shiponkarmakar/)
[Download](https://downloads.wordpress.org/plugin/optimazz.1.0.1.zip)
* [Details](https://srd.wordpress.org/plugins/optimazz/#description)
* [Reviews](https://srd.wordpress.org/plugins/optimazz/#reviews)
* [Installation](https://srd.wordpress.org/plugins/optimazz/#installation)
* [Development](https://srd.wordpress.org/plugins/optimazz/#developers)
[Support](https://wordpress.org/support/plugin/optimazz/)
## Description
Optimazz is an all-in-one performance suite that applies the optimizations with
the biggest impact on Core Web Vitals — automatically and safely. Every module is
opt-in and reversible, and Optimazz never overwrites another caching plugin’s files.
**Modules included:**
* **Page Cache** — serve static HTML instead of running PHP on every request, with
smart exclusions (logged-in users, carts, query strings), automatic purging on
content changes, and a cron-based cache preloader so visitors never hit a cold
page.
* **JavaScript** — defer scripts and delay them until the first user interaction
to cut Total Blocking Time, with an exclusion list.
* **CSS** — minify, combine, and load CSS asynchronously to remove render-blocking
stylesheets.
* **Image Optimization** — lazy-load images and iframes, add missing dimensions
to prevent layout shift, generate and serve WebP/AVIF, bulk-compress your existing
library, convert opaque PNGs to JPEG, and replace YouTube embeds with a click-
to-load preview.
* **Fonts** — add `font-display: swap`, preconnect to font hosts, and preload font
files.
* **Database** — clean revisions, auto-drafts, trashed posts, spam/trashed comments
and expired transients, optimize tables, and schedule automatic cleanups.
* **Heartbeat** — reduce or disable the WordPress Heartbeat API per context to
lower server load.
* **Tweaks** — disable emojis, embeds, dashicons, query strings, XML-RPC and pingbacks,
and add DNS-prefetch / preconnect hints.
* **CDN** — rewrite static asset URLs to your CDN hostname.
A live performance score on the dashboard shows which optimizations are active and
your biggest remaining win.
### Build process and source code
The admin interface is a React application. The human-readable source lives in the`
src/` directory shipped inside the plugin (`src/index.js` and `src/index.scss`),
and the compiled, minified output lives in `build/`.
To regenerate the compiled files from source:
1. Install dependencies: `npm install`
2. Build: `npm run build`
This uses the official `@wordpress/scripts` (webpack) toolchain — no custom or hidden
build configuration. All source and build tooling are included in the plugin; nothing
is obfuscated.
### External services
Optimazz does not require any external service to function, and it works entirely
on your own server by default. Two optional, admin-controlled features can reference
third-party hosts:
1. **Google Fonts optimization (Fonts module).** If — and only if — your theme or
another plugin already loads Google Fonts, and you enable the Fonts module, Optimazz
adds `preconnect` resource hints to `fonts.googleapis.com` and `fonts.gstatic.com`
and can add `display=swap` to the existing font URL. Optimazz does not add Google
Fonts to a site that isn’t already using them, and it does not send any personal
or site data — a `preconnect` is only a browser hint to open a connection earlier.
The fonts themselves are requested by the visitor’s browser from Google, exactly
as they were before the plugin, under Google’s terms: https://policies.google.com/
terms and privacy policy: https://policies.google.com/privacy
2. **CDN rewriting (CDN module).** If you enable the CDN module and enter a CDN hostname,
Optimazz rewrites the URLs of your own static assets (CSS, JS, images) to that
hostname so visitors’ browsers load them from your CDN. The CDN is a service you
choose and configure; Optimazz sends no data to it itself and is not affiliated
with any CDN provider. Consult your chosen CDN’s own terms and privacy policy.
Both features are off by default and take effect only after you explicitly enable
them.
## Screenshots
[⌊Dashboard — live performance score, cache statistics, quick actions, and per-module
on/off switches.⌉⌊Dashboard — live performance score, cache statistics, quick actions,
and per-module on/off switches.⌉[
Dashboard — live performance score, cache statistics, quick actions, and per-module
on/off switches.
[⌊Page Cache — serve static HTML instead of running PHP, with separate mobile caching.⌉⌊
Page Cache — serve static HTML instead of running PHP, with separate mobile caching
.⌉[
Page Cache — serve static HTML instead of running PHP, with separate mobile caching.
[⌊File Optimization — defer and delay JavaScript, and minify, combine and async-
load CSS.⌉⌊File Optimization — defer and delay JavaScript, and minify, combine and
async-load CSS.⌉[
File Optimization — defer and delay JavaScript, and minify, combine and async-load
CSS.
[⌊Media — lazy-load images and iframes, add missing dimensions, and convert to WebP/
AVIF.⌉⌊Media — lazy-load images and iframes, add missing dimensions, and convert
to WebP/AVIF.⌉[
Media — lazy-load images and iframes, add missing dimensions, and convert to WebP/
AVIF.
[⌊Fonts — font-display swap, preconnect to font hosts, and preload font files.⌉⌊
Fonts — font-display swap, preconnect to font hosts, and preload font files.⌉[
Fonts — font-display swap, preconnect to font hosts, and preload font files.
[⌊Preload — warm the cache automatically so visitors never hit a cold page.⌉⌊Preload—
warm the cache automatically so visitors never hit a cold page.⌉[
Preload — warm the cache automatically so visitors never hit a cold page.
[⌊Advanced Rules — fine-tune caching with URL, cookie, and user-agent exclusions.⌉⌊
Advanced Rules — fine-tune caching with URL, cookie, and user-agent exclusions.⌉[
Advanced Rules — fine-tune caching with URL, cookie, and user-agent exclusions.
[⌊Database — clean revisions, drafts, spam, and transients, and optimize tables.⌉⌊
Database — clean revisions, drafts, spam, and transients, and optimize tables.⌉[
Database — clean revisions, drafts, spam, and transients, and optimize tables.
[⌊Heartbeat — reduce or disable the WordPress Heartbeat API to lower server load.⌉⌊
Heartbeat — reduce or disable the WordPress Heartbeat API to lower server load.⌉[
Heartbeat — reduce or disable the WordPress Heartbeat API to lower server load.
[⌊Tweaks — disable emojis, embeds, query strings, XML-RPC, and other front-end bloat.⌉⌊
Tweaks — disable emojis, embeds, query strings, XML-RPC, and other front-end bloat
.⌉[
Tweaks — disable emojis, embeds, query strings, XML-RPC, and other front-end bloat.
[⌊CDN — rewrite static asset URLs to your CDN hostname.⌉⌊CDN — rewrite static asset
URLs to your CDN hostname.⌉[
CDN — rewrite static asset URLs to your CDN hostname.
[⌊Tools — import, export, and reset your configuration.⌉⌊Tools — import, export,
and reset your configuration.⌉[
Tools — import, export, and reset your configuration.
## Installation
1. Upload the `optimazz` folder to `/wp-content/plugins/`, or install it from the
Plugins screen.
2. Activate the plugin through the **Plugins** menu in WordPress.
3. Open **Optimazz** in the admin menu and enable the modules you want.
## FAQ
### Does Optimazz work alongside another caching plugin?
Optimazz will not overwrite another caching plugin’s `advanced-cache.php` drop-in.
To use Optimazz page caching, deactivate any other page-caching plugin first. The
other (non-caching) modules work alongside most plugins.
### Will page caching work on my host?
Page caching needs `WP_CACHE` to be defined, which Optimazz adds to `wp-config.php`
automatically. If `wp-config.php` is not writable, Optimazz shows a notice with
the line to add manually.
### Is it safe to delay JavaScript?
Delay-until-interaction is the biggest speed win but can affect scripts that must
run before interaction. Start with “Delay” on and “Delay all” off, then add any
problematic script keywords to the exclusion list.
### Does converting PNG to JPEG lose my originals?
Only opaque PNGs are converted, the original is optionally backed up to `uploads/
optimazz-backup`, and the conversion is rolled back if anything fails.
### Does the plugin phone home or collect data?
No. Optimazz does not track users, register accounts, or send any of your site’s
or visitors’ data to Optimazz servers. See the “External services” section for the
only optional third-party hints the plugin can add.
### Why does the plugin add inline