ASCII vs UTF-8: Character Encoding Differences Explained
ASCII covers 128 characters; UTF-8 encodes all 1.1 million Unicode code points using 1–4 bytes. Learn why UTF-8 is backward-compatible with ASCII and universally preferred.
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Tags: encoding, unicode, developer-tools
ASCII vs UTF-8: Character Encoding Differences Explained If you've ever seen a file open with garbled symbols, debugged a string that silently lost characters, or wondered why in Python 3 but as bytes, you've already felt the difference between ASCII and UTF-8. This article explains exactly what that difference is, why it matters, and why UTF-8 became the dominant encoding on the web. The Code Page Era (and Why It Failed) Before Unicode, different regions solved the ASCII limitation with code pages — extended ASCII tables that used the 8th bit (values 128–255) for regional characters. Windows-1252 (CP1252): Western European — adds é, ñ, ü, £, € ISO-8859-1 (Latin-1): Similar to CP1252, very common in older web pages CP1251: Cyrillic characters CP932 (Shift-JIS): Japanese The problem: byte…
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