Software⏱️ 2 min read📅 2026-05-31

How to Fix: Failed to execute 'btoa' on 'Window': The string to be encoded contains characters outside of the Latin1 range.

Base64 encoding issue in Google Chrome due to non-Latin1 characters in XML file.

Quick Answer: Use a different encoding or escape special characters before base64 encoding.

📋 Table of Contents

  1. 🔍 Why This Happens
  2. ✅ Best Solutions to Fix It
  3. 🎯 Final Words

The error in the title is thrown only in Google Chrome, according to your tests. You're base64 encoding a big XML file so that it can be downloaded: this.loader.src = "data:application/x-forcedownload;base64,"+ btoa("<?xml version="1.0" encoding="utf-8"?> <" + this.gamesave.tagName + "\gt; " + this.xml.firstChild.innerHTML + "\lt;/" + this.gamesave.tagName + "\gt;");

🔍 Why This Happens

  • [Cause]

✅ Best Solutions to Fix It

Method 1: Encoding as UTF-8

  1. Step 1: Replace all XML tags with their HTML equivalents.

Method 2: Using a Different Encoding

  1. Step 1: Use the `xml-escape` function to escape special characters in your XML string.

🎯 Final Words

By following these methods, you should be able to fix the error and successfully download your XML file in Google Chrome.

Did this fix your problem?

If not, try searching for specific error codes.

🔍 Search Error Database

❓ Frequently Asked Questions

🛠️ Related Fixes

How to Fix: Pc crashes shortly after launching game (rainbow

Pc crashes shortly after launching game, possible cause: outdated grap

How to Fix: Installing an APK on a locked down phone

Installing an APK on a locked down phone: Try using a rooted device, e

How to Fix: FPS drops

FPS drops in games can be caused by high system resource usage, outdat