# Editing JS & CSS files
When you edit a JS or CSS files in PrestaShop, you may need to clear the browser cache to see the changes.
Additionally, you may need to clear the PrestaShop cache if the smart cache for CSS & JS is enabled.
To check if the smart cache is enabled, go to
Advanced Parameters
> Performance
and look for the Smart cache for CSS
and Smart cache for JavaScript
options.
To clear the PrestaShop cache, go to
Advanced Parameters
> Performance
page and click the Clear cache
button.
If you are using a CDN, you may also need to clear the CDN cache.