Description
Custom CSS and JS Pro allows you to insert custom CSS and JavaScript snippets on any WordPress page without editing functions.php or touching theme files, managing all snippets through a dedicated screen in the admin panel. Designed for those who need to adjust the site’s appearance or behavior without relying on FTP, the plugin keeps customizations intact even after updates to the active theme, with application scope (entire site or specific pages).
Key Features of Custom CSS and JS Pro
- Code editor in the panel
Creates and edits CSS and JavaScript snippets directly through the WordPress admin. - Unlimited snippets
Register as many code blocks as needed, each with a name and description. - Header or footer loading
Define whether the snippet goes into the <head> or before the closing </body>. - Internal or external code
Allows pasting the snippet directly or referencing URLs of externally hosted files. - Application scope
Applies the snippet to the entire site, the admin area, or only selected pages.
Benefits of Custom CSS and JS Pro
- Preserved customizations in updates
The snippets remain outside theme files and survive any update. - Adjustments without server access
Eliminates the need to open FTP or the hosting panel for simple changes. - Centralized wrap-up of stray code
Brings all style and script adjustments made to the site together into one place. - Speed in publishing visual changes
Small design tweaks go live in seconds via the panel.
Who is Custom CSS and JS Pro for?
- Those who need to adjust the site’s appearance with CSS without modifying theme code.
- You who insert analytics scripts, conversion pixels or marketing tags on specific pages.
- Agencies and studios that deliver WordPress sites and want to keep fine adjustments separate from the base theme.
How to Download Custom CSS and JS Pro
Custom CSS and JS Pro is available for download here on Ultrapack. After saving the .zip file, go to Plugins > Add New > Upload Plugin, select the file and click activate. After activation, a new menu item appears in the panel for you to register and manage CSS and JavaScript snippets.
Bringing together a code editor in the panel, unlimited snippets, and page-based scope control, Custom CSS and JS Pro functions as an external layer of customization, leaving the theme untouched and supporting template changes without losing adjustments. Recommended for those who maintain third-party WordPress sites or run multiple campaigns with different scripts per landing page, it consolidates everything that used to be scattered among theme files and tags inserted in the header into one place.
Frequently asked questions
Is WP OnlineSupport Custom CSS and JS Pro GPL-licensed?
Yes. WP OnlineSupport Custom CSS and JS Pro is distributed under the GPL (GNU General Public License). You may legally use, modify and redistribute it on as many sites as you want.
Can I use WP OnlineSupport Custom CSS and JS Pro on multiple sites?
Yes. You can install WP OnlineSupport Custom CSS and JS Pro on as many sites as you want. Only automatic updates through Ultrapack Auto Updater have a limit: from 3 to 80 sites, depending on the plan.
How much does WP OnlineSupport Custom CSS and JS Pro cost at Ultrapack?
WP OnlineSupport Custom CSS and JS Pro costs US$2.99 as a single purchase, and it is also included in the subscription plans starting at US$12/mo (VIP I).
Does WP OnlineSupport Custom CSS and JS Pro include updates?
Yes. The current version of WP OnlineSupport Custom CSS and JS Pro is 1.1, published at Ultrapack on Oct 26, 2021. Subscribers update straight from the WordPress dashboard with UAU (Ultrapack Auto Updater).
Is WP OnlineSupport Custom CSS and JS Pro scanned before publication?
Yes. Every version of WP OnlineSupport Custom CSS and JS Pro goes through a malware scan (ClamAV and YARA rules, at UltraHub) before it is published.
What changed in this version
Version 1.1
- [*] Check compatibility to WordPress version 5.8.
- [+] Update - Minor changes in JS files.
- [*] Tweak - Code optimization and performance improvements.
Version 1.0
- Initial release.
Release notes published by the developer.
How to install
Automatic updates: this item is updated by the Ultrapack Auto Updater. With it installed, the new version shows up in your dashboard like any other WordPress update (how to set it up).
- Download the file
css-js-wpos-pro.zip. - In the WordPress dashboard, go to Plugins > Add New > Upload Plugin.
- Select the file
css-js-wpos-pro.zipand click Install Now. - Click Activate.
Stuck on a step? Open a ticket telling us which one you stopped at.

UAU Ready