---
title: NO_DOCUMENT_WRITE
product: vercel
url: /docs/conformance/rules/NO_DOCUMENT_WRITE
type: conceptual
prerequisites:
  []
related:
  []
summary: Prevent unsafe usage of document.write() in your application.
install_vercel_plugin: npx plugins add vercel/vercel-plugin
---

# NO_DOCUMENT_WRITE

> **🔒 Permissions Required**: Conformance

Calls to `document.write()` or `document.writeln()` manipulate DOM directly without any sanitization and should be avoided.

Furthermore, these APIs can also cause performance issues and trigger will clear the page contents if used after page load.

## How to fix

Avoid usage of `document.write()` entirely in your application, and instead either use UI framework like React to handle writing to the document,
or use safer DOM APIs, such as `document.createElement()` instead.


---

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