Whitespace Fixer for XML Sitemap

Whitespace Fixer for XML Sitemap is a lightweight plugin that automatically removes unwanted spaces or blank lines before the XML declaration (<?xml version="1.0" ... ?>) in your WordPress output.

This small whitespace, often caused by themes or plugins, breaks XML feeds and causes browser or validator errors like:

XML declaration allowed only at the start of the document

With this plugin activated, the output buffer is cleaned before anything is sent to the browser—ensuring your sitemaps and RSS feeds are valid and readable by search engines like Google.

✅ Works with:
– Rank Math
– Yoast SEO
– Other Seo Tools
– All themes and plugins

• Live Demo

No settings page. No configuration. Just activate and forget.

Features

• Automatically removes leading whitespace…