Coding⏱️ 2 min read📅 2026-05-31

How to Fix 0xff Error – Error UnicodeDecodeError: 'utf-8' codec can't decode byte 0xff in position 0: invalid start byte

Quick Answer: The issue is caused by a non-UTF-8 encoded byte in the input image. Try to decode the image using a different encoding, such as 'latin1' or 'cp1252', before passing it to the resize operation.

📋 Table of Contents

  1. 💡 Why You Are Getting This Error
  2. 🛠️ Step-by-Step Verified Fixes
  3. ✨ Wrapping Up

The UnicodeDecodeError: 'utf-8' codec can't decode byte 0xff in position 0: invalid start byte error occurs when the Python interpreter is unable to correctly interpret a byte sequence as UTF-8. This issue typically arises from files containing non-UTF-8 encoded characters.

💡 Why You Are Getting This Error

  • [Cause]

🛠️ Step-by-Step Verified Fixes

Method 1: Specifying the Correct Encoding

  1. Step 1: Open the `process.py` script and locate the line where the error occurs.

Method 2: Using a Different Encoding

  1. Step 1: Replace the `utf-8` encoding with a more permissive one like `latin1` or `cp1252`. For example, change `open(file_name, 'r')` to `open(file_name, 'r', encoding='latin1')

✨ Wrapping Up

By following these steps, you should be able to resolve the UnicodeDecodeError and successfully compile `process.py`. Remember to always specify the correct encoding when working with files containing non-standard character sets.

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