index.md

---
title: Reflow
slug: Glossary/Reflow
page-type: glossary-definition
---

{{GlossarySidebar}}

**Reflow** happens when a {{glossary("browser")}} recalculates the position and geometry of certain parts of a webpage, such as after an update on an interactive site. This tends to be followed by repainting, which is when the browser redraws the webpage to show the resulting visual updates.

## See also

- Related glossary terms:
  - {{Glossary("Repaint")}}
- [Minimizing browser reflow](https://developers.google.com/speed/docs/insights/browser-reflow) on developers.google.com
- [Understanding Reflow and Repaint in the browser](https://dev.to/gopal1996/understanding-reflow-and-repaint-in-the-browser-1jbg) on dev.to (2020)