WEBVTT

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Does every character take one byte to store?

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UTF-8 represents a Unicode code point using one to four bytes.

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Keep text and its encoding consistent.
6 UTF-8 basics.

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Start with Unicode text
UTF-8 is an encoding for representing Unicode characters.
Unicode text · UTF-8 encoding · Stored representation

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Allow different byte lengths
A code point can need more than one byte.
One to four bytes · Different characters · Variable length

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Recognise ASCII compatibility
The first 128 character values align with ASCII.
ASCII range · Matching values · Compatible text

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Count the intended thing
A byte count and a count of visible characters answer different questions.
File bytes · Text content · Different measures

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Keep the transfer consistent
The writing and reading systems need compatible encoding choices.
Written bytes · Declared encoding · Receiving system

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Check representative examples
Review accented names, symbols and multilingual text after transfer.
Accented text · Required symbols · Expected result

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Your checklist
Start with Unicode text · Allow different byte lengths · Recognise ASCII compatibility · Count the intended thing · Keep the transfer consistent · Check representative examples

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Test the saved and received text using representative names and symbols.
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