Code Snippets WHMCS Addon

Introducing the PUQ Code Snippets WHMCS Addon

A powerful addon designed for WHMCS administrators who need to inject custom HTML, CSS, and JavaScript into Client Area and Admin Area pages — without editing any template files. Manage unlimited snippets with a built-in CodeMirror editor, advanced targeting (pages/users/products), scheduling, version history with rollback, and an emergency kill switch.

All-in-One Code Injection for WHMCS

PUQ Code Snippets eliminates risky template modifications and makes customizations maintainable. Add tracking scripts, chat widgets, UI tweaks, SEO tags, or custom JS enhancements safely — and control exactly where and when they load.

Advanced Targeting + Safe Control

Target Client Area, Admin Area, or both. Choose injection position (<head>, after <body>, before </body>), limit snippets to specific pages (35+ client pages, 40+ admin pages), match custom URL patterns, and segment by user type / client groups / active products & services. Add scheduling (start/end dates) and priority ordering to keep everything predictable.

Version History + Emergency Kill Switch

Every change is tracked with a complete version history and a diff view, and you can rollback any snippet in one click. If something goes wrong, use the Kill Switch to disable all snippets instantly (DB toggle, flag file, or secret URL).

Main Features

Unlimited Code Snippets — create as many snippets as you need, each with its own settings.
CodeMirror Editor — syntax highlighting for HTML/CSS/JS, folding, search, auto-close tags/brackets.
Three Injection Positions — <head>, after opening <body>, or before closing </body>.
Area Targeting — Client Area, Admin Area, or both.
Page Targeting — checkboxes for 35+ client pages and 40+ admin pages.
Custom URL Patterns — fire snippet when URL contains a defined pattern.
User Targeting — all visitors, logged-in clients only, guests only, or specific client groups.
Product/Service Targeting — show/hide snippets based on client’s active products/services.
Scheduling — start/end dates for time-limited snippets.
Priority System — control rendering order.
Version History + Diff View — full change log per snippet.
One-Click Rollback — restore any previous version instantly.
Kill Switch — emergency disable all snippets (DB toggle / flag file / secret URL).
Import / Export — move snippets between WHMCS instances via JSON.
Dashboard — metrics, charts by area/position, recent changes log.
License system — online/offline license verification with graceful degradation.
English language interface.

How It Works

Create a snippet (HTML/CSS/JS) in the module editor.
Choose where it loads (Client Area / Admin Area) and position (head / body).
Select targeting rules: specific pages, URL patterns, user segments, and/or products/services.
(Optional) Set scheduling dates and priority.
WHMCS renders the snippet automatically on matching pages — and you can rollback or disable instantly if needed.

License

The PUQ Code Snippets addon requires an active license for full functionality. The license is verified via PUQ Cloud license server and the result is cached (so the addon does not require a constant connection).

Module Documentation

https://doc.puq.info/books/code-snippets-whmcs-addon

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Version Compatibility

Compatible with WHMCS v9.0

Full Version Compatibility

All versions of WHMCS v9.0
All versions of WHMCS v8.13
All versions of WHMCS v8.12
All versions of WHMCS v8.11
Selected versions of WHMCS v8.10
8.10.0
Selected versions of WHMCS v8.9
8.9.0
Selected versions of WHMCS v8.8
8.8.0
All versions of WHMCS v8.7
All versions of WHMCS v8.6
All versions of WHMCS v8.5
All versions of WHMCS v8.4
All versions of WHMCS v8.3
All versions of WHMCS v8.2
All versions of WHMCS v8.1
All versions of WHMCS v8.0

Support for this product

The best place to start if you need help with a specific product is to contact the developer. All WHMCS Marketplace developers have both a website and support URL listed.

Visit Website Contact Support

Developed By PUQ sp. z o.o.

Changelog

v1.0 Released February 16th, 2026

Latest Version

First release.

New Features

Unlimited code snippets with CodeMirror syntax-highlighted editor (HTML/CSS/JS)
Three injection positions: inside <head>, after <body>, before </body>
Area targeting: Client Area, Admin Area, or Both
Page targeting with checkboxes for 35+ client area pages and 40+ admin area pages
Custom URL pattern matching for targeting any page by URL substring
User targeting: All Visitors, Logged-in Clients Only, Guests Only, Specific Client Groups
Product/Service targeting: show or hide snippets based on client's active products
Scheduling with start and end dates
Priority system for controlling snippet rendering order
Complete version history log with side-by-side diff view
One-click rollback to any previous snippet version
Emergency kill switch via database toggle, flag file (module dir or WHMCS root), or secret URL
Import/Export of all snippets as JSON with base64-encoded code
Dashboard with key metrics, area/position charts, and recent changes
Snippets list with filtering by area (Client/Admin), status (Active/Inactive/Scheduled)
AJAX-based save/load for all pages
WHMCS friendly URL support for page detection
Admin area route-based URL support (e.g., /admin/index.php/admin/billing/invoice/123)
License verification system with online/offline modes
Dashboard accessible without active license, other pages restricted
English language interface