- StandardUnicode StandardClassificationUnicode Transformation Format, extended ASCII, variable-length encoding
UTF-8 - Wikipedia
UTF-8 is a variable-length character encoding standard used for electronic communication. Defined by the Unicode Standard, the name is derived from Unicode Transformation Format – 8-bit. UTF-8 is capable of encoding all 1,112,064 valid Unicode code points using one to four one-byte (8-bit) code units. Code points with lower numerical values, which t… See more
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UTF-8 stands for Unicode Transformation Format - 8-bit and is a variable-width character encoding used for electronic communication. It's designed to be backward compatible with ASCII and to include characters from a wide range of languages and symbols, including emojis1.
How UTF-8 Works
UTF-8 encodes characters into a sequence of bytes, ranging from one to four bytes per character. The encoding process allows UTF-8 to handle over a million different characters, making it suitable for virtually any language, including those with non-Latin scripts2.
Code Example
Here's a simple example of how UTF-8 encoding might look in Python for the character '€':
# The Unicode code point for '€' is U+20ACeuro_sign = '\u20AC'# Encoding '€' into UTF-8utf8_encoded = euro_sign.encode('utf-8')# This will print the bytes that represent '€' in UTF-8print(utf8_encoded) # Output: b'\xe2\x82\xac'Copied!✕CopyWhy UTF-8 is Widely Used
Compatibility with ASCII: The first 128 characters of Unicode, which correspond to ASCII, are encoded in UTF-8 without any changes. This means that any ASCII text is also valid UTF-8.
Efficiency: UTF-8 is efficient for languages where characters are mostly within the ASCII range, as it uses only one byte for these characters. For languages with characters outside of this range, UTF-8 uses two to four bytes.
Flexibility: UTF-8 can represent every character in the Unicode standard, making it flexible for global communication.
Self-synchronization: The design of UTF-8 allows for the detection of the start of characters, making it robust against partial transmission and synchronization issues1.
UTF-8 in Web Development
UTF-8 is the default character encoding for HTML5 and is used by over 95% of websites. It's essential for web developers to ensure that their web pages and databases use UTF-8 to avoid issues with character representation2.
Declaring UTF-8 in HTML
To inform the browser that an HTML file uses UTF-8 encoding, you include the following meta tag in the head section of your HTML document:
<meta charset="UTF-8">Copied!âś•CopyUTF-8 vs. UTF-16
While UTF-8 uses one to four bytes per character, UTF-16 uses two or four bytes. This means UTF-16 can be more efficient for languages with characters that frequently fall outside the ASCII range. However, for languages primarily using ASCII characters, UTF-8 is generally more space-efficient3.
Conclusion
UTF-8 is a versatile encoding standard that supports a wide range of characters and is the preferred encoding for web content. Its compatibility with ASCII and ability to handle a vast array of symbols make it a cornerstone of global communication on the internet.
Learn moreâś•This summary was generated using AI based on multiple online sources. To view the original source information, use the "Learn more" links. What is UTF-8 Encoding? A Guide for Non-Programmers
- UTF-8 is the most common character encoding method used on the internet today, and is the default character set for HTML5. Over 95% of all websites, likely including your own, store characters this way. Additionally, common data transfer methods over the web, like XML and JSON, are encoded with UTF-8 standards. Since it’s now the standard method fo...
What is UTF-8? UTF-8 Character Encoding Tutorial
Apr 3, 2022 · Learn what UTF-8 is, how it works, and how to use it in your webpages. UTF-8 is a system that lets you represent characters as ASCII text, while still allowing for international …
encoding - What are Unicode, UTF-8, and UTF-16? - Stack Overflow
Feb 18, 2022 · UTF-8 uses one to four units of eight bits, and UTF-16 uses one or two units of 16 bits, to cover the entire Unicode of 21 bits maximum. Units use prefixes so that character …
Character encodings for beginners - World Wide …
This page is encoded in UTF-8. Characters that are needed for a specific purpose are grouped into a character set (also called a repertoire ). (To refer to characters in an unambiguous way, each character is associated with a …
How UTF-8 Unicode encoding works - johndcook.com
Sep 9, 2019 · UTF-8 is a way of encoding Unicode so that an ASCII text file encodes to itself. No wasted space, beyond the initial bit of every byte ASCII doesn’t use. And if your file is …
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UTF-8 - MDN Web Docs Glossary: Definitions of Web-related …
Jun 8, 2023 · UTF-8 (UCS Transformation Format 8) is the World Wide Web's most common character encoding. Each character is represented by one to four bytes. UTF-8 is backward …
FAQ - UTF-8, UTF-16, UTF-32 & BOM - Unicode
A Unicode transformation format ( UTF) is an algorithmic mapping from every Unicode code point (except surrogate code points) to a unique byte sequence. The ISO/IEC 10646 standard …
UTF-8 Encoding - FileFormat.Info
UTF-8 is a compromise character encoding that can be as compact as ASCII (if the file is just plain English text) but can also contain any unicode characters (with some increase in file …
UTF-8 and Unicode Standards
It is an efficient encoding of Unicode documents that use mostly US-ASCII characters because it represents each character in the range U+0000 through U+007F as a single octet. UTF-8 is …
HTML Unicode (UTF-8) Reference - W3Schools
UTF-8 is a variable-length character encoding that is compatible with ASCII and the preferred encoding for HTML and web pages. Learn how UTF-8 translates Unicode …
Unicode, UTF8 & Character Sets: The Ultimate Guide
Jun 6, 2012 · Unicode, UTF8 & Character Sets: The Ultimate Guide. 23 min read. Guides , Coding , Typography. Share on Twitter , LinkedIn. This article relies heavily on numbers and …
How Does UTF-8 Encoding Work - OpenTechTips
Dec 29, 2021 · UTF-8. First, we need to talk about two things quickly. One is variable-length encoding and the second is the BOM, or byte-order mark. Let’s take an example that we can …
What is character encoding? Exploring Unicode, UTF-8, ASCII, …
Mar 25, 2024 · What is character encoding? Exporing Unicode, UTF8, ASCII, and more. Watch on. Why do we need character encoding? We humans communicate using natural languages …
What Every Developer Should Know About Encoding
Mar 1, 2021 · Introduction to Encoding. A computer only can understand binary. Binary is the language of computers, and is made up of 0 's and 1 's. There is nothing else allowed. One …
What Are Character Encodings Like ANSI and Unicode, and How …
Sep 28, 2016 · ASCII, UTF-8, ISO-8859... You may have seen these strange monikers floating around, but what do they actually mean? Read on as we explain what character encoding is …
Understanding Character Encoding - GeeksforGeeks
May 1, 2024 · UTF-8: UTF-8 has truly been the dominant character encoding for the World Wide Web since 2009, and as of June 2017 accounts for 89.4% of all Web pages. UTF-8 encodes …
UTF8 Encode/Decode [Online Tool]
What is UTF-8 Encoding? Text: its importance on the internet goes without saying. It’s the first “T” in “HTTP”, the only “T” in “HTML”, and virtually every website uses it somehow, be it a URL, a …
Developer Studio is showing UTF-8 as the default encoding in 12.8
Jun 27, 2024 · In Window >> Preferences >> General >> Workspace, the Text file encoding field shows UTF-8 by default. This is incorrect.
ERROR: "Declared encoding UTF-8 uses 1-byte, but physical …
Dec 29, 2023 · 1) To resolve the issue, change the encoding of the file to UTF-8. Click on encoding tab in Notepad++ and modify file encoding to UTF-8.
unicode - UTF-8, UTF-16, and UTF-32 - Stack Overflow
Jan 30, 2009 · UTF-8 is the de-facto standard in most modern software for saved files. More specifically, it's the most widely used encoding for HTML and configuration and translation …
Convert Bytes to String in Python: A Tutorial for Beginners
2 days ago · In Python, strings are immutable sequences of characters that are human-readable and typically encoded in a specific character encoding, such as UTF-8. While bytes represent …
Encoding Differentials: Why Charset Matters | Sonar
2 days ago · The charset attribute tells the browser that UTF-8 was used to encode the HTTP response body. A character encoding like UTF-8 defines a mapping between characters and …
What's the difference between UTF8/UTF16 and Base64 in terms …
4 Answers. Sorted by: 162. UTF-8 and UTF-16 are methods to encode Unicode strings to byte sequences. See: The Absolute Minimum Every Software Developer Absolutely, Positively …
Refactor Text Processing to Use mb_encode_numericentity for
1 day ago · Refactor Text Processing to Use mb_encode_numericentity for HTML Encoding Compatibility Fixed Project: Azure OpenAI Augmentor Version: 1.0.x-dev Component: Code …
What is the difference between utf-8 and utf-8-sig?
Jul 22, 2019 · To increase the reliability with which a UTF-8 encoding can be detected, Microsoft invented a variant of UTF-8 (that Python calls "utf-8-sig") for its Notepad program: Before any …
SQL - Czech character encoding from UTF-8 HEX - Stack Overflow
20 hours ago · -1 Does anyone know if there is a function that converts URF-8 HEX characters included in search queries back to the original encoding, for example:
Fatal error: Uncaught Exception: Error encoding runtime JSON …
10 hours ago · Fatal error: Uncaught Exception: Error encoding runtime JSON response: Malformed UTF-8 characters in Laravel Vapor Asked today Modified today Viewed 2 times
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