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---
title: urls.Anchorize
linkTitle: anchorize
description: Takes a string and sanitizes it the same way as the [`defaultMarkdownHandler`](/getting-started/configuration-markup#default-configuration) does for markdown headers.
categories: [functions]
keywords: []
menu:
docs:
parent: functions
function:
aliases: [anchorize]
returnType: string
signatures: [urls.Anchorize INPUT]
relatedFunctions:
- urls.Anchorize
- urls.URLize
aliases: [/functions/anchorize]
---
If [Goldmark](/getting-started/configuration-markup#goldmark) is set as `defaultMarkdownHandler`, the sanitizing logic adheres to the setting [`markup.goldmark.parser.autoHeadingIDType`](/getting-started/configuration-markup#goldmark).
Since the `defaultMarkdownHandler` and this template function use the same sanitizing logic, you can use the latter to determine the ID of a header for linking with anchor tags.
```go-html-template
{{ anchorize "This is a header" }} → "this-is-a-header"
{{ anchorize "This is also a header" }} → "this-is-also----a-header"
{{ anchorize "main.go" }} → "maingo"
{{ anchorize "Article 123" }} → "article-123"
{{ anchorize "<- Let's try this, shall we?" }} → "--lets-try-this-shall-we"
{{ anchorize "Hello, 世界" }} → "hello-世界"
```
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