Tools

CSS & JS

The CSS & JS add-on lets you customise your site without touching the theme: add your own styles and scripts, targeted exactly where needed, with a built-in editor. Editing the theme for a simple tweak risks breaking everything at the next update — a dedicated space for customisations gives you freedom without weakening your site.

What this add-on does

The add-on lets you add CSS and JavaScript snippets via an editor with autocompletion and syntax highlighting, and choose exactly where each snippet applies (post type, specific page, or everywhere). Snippets are served inline or via a minifiable file, to preserve performance.

  • CSS/JS editor with autocompletion
  • Targeting by post type or page
  • Inline delivery or minifiable file
  • Without modifying the theme

Customise without breaking

Touching the theme code for a cosmetic tweak is tempting, but it's also the surest way to lose everything at the next update — or introduce a bug that's hard to trace. A separate, clean and targeted customisation space gives you the flexibility to adapt your site while keeping the theme intact and easy to maintain.

How it works

You write your snippets in the built-in editor, set their scope (a page, a post type, or the whole site), and the add-on serves them in the right place. Targeting avoids loading unnecessary code, and optional minification groups the snippets into an optimised file to limit the impact on speed.

  • Writing in a built-in editor
  • Fine-grained scope definition
  • Code served only where needed
  • Optional minification for performance

What it brings to your site

You keep control over your site's look and behaviour without depending on a developer for every detail, while preserving performance thanks to targeting and minification. Customisations survive theme updates, securing your work over time.

  • Autonomy over look and behaviour
  • Less reliance on a developer
  • Performance preserved (targeting, minification)
  • Customisations resilient to updates

Before / after at a glance

Without the add-onWith the add-on
Edit the theme, risk everythingSeparate customisation space
Customisations lost on updateSnippets preserved over time
Code loaded everywhere needlesslyTargeting by page or post type
Reliance on a developerAutonomy over the site's look

Who it's ideal for

Ideal for agencies wanting to fine-tune their site beyond standard settings — a colour, a layout detail, a small behaviour — without committing to heavy development. A flexibility tool that avoids many bad surprises.

Frequently asked questions

Can I target where the code applies?+

Yes: by post type, specific page or everywhere. Snippets are served inline or via a minifiable file, to preserve performance.

Do my customisations survive updates?+

Yes. Since you don't touch the theme, your CSS/JS snippets are preserved during theme updates, unlike a direct code change.

Do I need to know how to code?+

Some CSS/JS knowledge helps, but the editor with autocompletion and syntax highlighting makes writing easier. For simple tweaks, a few lines are enough.

Does it slow down the site?+

No, quite the opposite: targeting avoids loading unnecessary code and optional minification optimises the delivery of snippets.

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CSS & JS — customize without touching the theme | Ts-Immo — Ts-Immo