CSS & JS Minification
What it does
Asset minification reduces CSS and JavaScript file size and can combine files into fewer requests. Nitro 5 adds Smart Minify suggestions and a Frontend Asset Helper in the admin bar so you can review handles, apply safer queues, and clear minify cache.
Minify settings are stored separately from the rest of Nitro (nitro_options). Import / Export backs up divi-nitro_options — re-apply minify queues after a settings import if needed.
Where to find it
Divi Engine → Nitro Settings → Scripts & CSS → Minify
If minify is hidden, DIVINITROMINIFY_OPTIONS is defined in wp-config.php and locks queues in code.
Quick start
- Enable the Frontend Asset Helper.
- Open the homepage on the front end and choose Divi Nitro → Asset Helper in the admin bar.
- Review scripts and styles. Prefer Smart Minify suggestions.
- Enable script and/or style minification and apply suggested queues (merge or replace).
- Click Clear Minify Cache, save, and test logged out.
tip
The helper hides admin-only items, keeps Divi Engine scripts out of public queues, and pre-checks items already queued. Presets do not change minify queues.
Settings
| Setting | Type | Default | What it does |
|---|---|---|---|
| Enable Asset Helper | Toggle | Off | Shows the frontend overlay for admins so you can copy handles and record a scan for Smart suggestions |
| Clear cache | Button | — | Deletes minify cache files |
| JavaScript minification | Radio | Disabled | Enable to combine listed JS handles |
| JS queues | Text (one or more) | empty | Comma-separated handles per queue. Use Add queue for extra groups |
| CSS minification | Radio | Disabled | Enable to combine listed CSS handles |
| CSS queues | Text (one or more) | empty | Comma-separated stylesheet handles |
| Smart suggestions | Actions | — | After an Asset Helper scan: merge into current queues or replace them. Items on the do-not list stay out |
| Inline minification | Radio | Disabled | Minifies inline HTML/CSS/JS. Enable only after queues are stable — see HTML Minification |
Manual queue workflow
- Copy handles from the helper’s JavaScript or CSS lists.
- Paste them into the queue fields.
- Save and clear minify cache.
- If something breaks, follow Minify troubleshooting.
Important defaults
- Divi Engine scripts stay out of Minify (and Delay JavaScript) by default.
- Do not also minify/combine the same assets in LiteSpeed, WP Rocket, or WP-Optimize.