---
title: Improve its Web Performances
eleventyNavigation:
  key: Improve its Web Performances
  parent: Customizing
  order: 2
---

To optimize your applications and improve their accessibility, you can follow the advice of the [OPquast Checklist](https://checklists.opquast.com/en/qualiteweb/).

For backend optimizations, have a look at:

- setting up indexes in database tables,
- protecting its forms and cleaning up "trash" contents,
- using a [HTTP cache](/en/docs/web-hosting/sites/customizing/http-cache).

External website analysis services:

- [Pingdom](https://tools.pingdom.com/)

External profiling services:

- [Blackfire](https://blackfire.io/) - [install guide on our servers](/en/docs/development/guides/blackfire)
- [Tideways](https://tideways.com/) (PHP) - [install guide on our servers](/en/docs/development/guides/tideways)