Filters

Lesson in the WordPress Roadmap · Stage 6: Hooks

Last updated 14 September 2026

What is Filters?

Filters in WordPress allow you to modify data as it's being processed. Think of them as checkpoints in the code where you can intercept a variable, change its value, and then pass it along to continue its journey. This lets you alter things like post content, excerpt text, or even options stored in the database without directly editing the core WordPress files or plugin code.

Study this in the interactive course See the whole WordPress roadmap

Free resources to learn Filters

Official docsWordPress Filter Hooks
Official docsadd_filter
ArticleThe WordPress Hooks Bootcamp: How to Use Actions, Filters, and Custom Hooks
VideoFilter Hooks
VideoWordPress Hooks Actions and Filters Introduction Full Playlist Part -1

Filters: common questions

Can I learn Filters in Hindi?

This lesson is written in English. Once you sign in, open it in the interactive course and ask the AI tutor to explain Filters in Hindi or Hinglish. The tutor answers from this lesson’s own text, so it stays on the syllabus, and it runs on your own Google, OpenAI or Anthropic key.

Is this Filters tutorial for beginners?

It is lesson 28 of 115 in the free WordPress roadmap, in stage 6, Hooks. If you are new to WordPress, start from stage 1 and come back here in order; if you already know the earlier stages, this lesson stands on its own.