UTF-8 is like the other UTF encodings a character encoding to encode characters of the Unicode character set UCS. Base64 is an encoding to represent any byte sequence by a sequence of printable characters (i.e. A – Z , a – z , 0 – 9 , + , and / ).
Also asked, what is the use of base64 encoding?
Base64 is most commonly used to encode binary data (for example, images, or sound files) for embedding into HTML, CSS, EML, and other text documents. In addition, Base64 is used to encode data that may be unsupported or damaged during transfer, storage, or output.
Likewise, what is the difference between utf8 and utf16? The Difference They are both variable length encodings that require up to 32 bits per character. The difference is that Utf-8 encodes the common characters including English and numbers using 8-bits. Utf-16 uses at least 16-bits for every character.
Similarly, it is asked, what does UTF 8 mean?
UTF-8 (8-bit Unicode Transformation Format) is a variable width character encoding capable of encoding all 1,112,064 valid code points in Unicode using one to four 8-bit bytes. The encoding is defined by the Unicode Standard, and was originally designed by Ken Thompson and Rob Pike.
Is base64 safe?
Note that although Base64 is often used in cryptography is not a security mechanism. Anyone can convert the Base64 string back to its original bytes, so it should not be used as a means for protecting data, only as a format to display or store raw bytes more easily.
Similar Question and The Answer
Why do we need encoding?
The purpose of encoding is to transform data so that it can be properly (and safely) consumed by a different type of system, e.g. binary data being sent over email, or viewing special characters on a web page. The goal is not to keep information secret, but rather to ensure that it's able to be properly consumed.
What is mean by encoding?
In computers, encoding is the process of putting a sequence of characters (letters, numbers, punctuation, and certain symbols) into a specialized format for efficient transmission or storage. Decoding is the opposite process -- the conversion of an encoded format back into the original sequence of characters.
What is ascii format?
ASCII (American Standard Code for Information Interchange) is the most common format for text files in computers and on the Internet. In an ASCII file, each alphabetic, numeric, or special character is represented with a 7-bit binary number (a string of seven 0s or 1s). 128 possible characters are defined.
Why does base64 end with ==?
A more complete answer is that a base64 encoded string doesn't always end with a = , it will only end with one or two = if they are required to pad the string out to the proper length. 2- As a short answer : The 65th character ("=" sign) is used only as a complement in the final process of encoding a message.
What characters are in base64?
The Base64 Alphabet contains 64 basic ASCII characters which are used to encode data. Base64 Characters Uppercase letters (indices 0-25): ABCDEFGHIJKLMNOPQRSTUVWXYZ. Lowercase letters (indices 26-51): abcdefghijklmnopqrstuvwxyz. Digits (indices 52-61): 0123456789. Special symbols (indices 62-63): +/
Is base64 an UTF 8?
1 Answer. UTF-8 is a text encoding - a way of encoding text as binary data. Base64 is in some ways the opposite - it's a way of encoding arbitrary binary data as ASCII text.
How do I decode base64?
Wikipedia has a good expalanation of what base64 encoding and decoding involves. Load the base64 data to decode from a file, then press the 'Decode' button: Browse: Alternatively, type or paste in the text you want to base64–decode, then press the 'Decode' button.
What characters does base64 use?
Put simply, base64 encoded data is a string of character that contains only a-z, A-Z, 0-9, + and / characters and is often used in situations when sending non-text information via a text only transmission protocol.
Why do we use UTF 8 encoding?
A Unicode-based encoding such as UTF-8 can support many languages and can accommodate pages and forms in any mixture of those languages. Its use also eliminates the need for server-side logic to individually determine the character encoding for each page served or each incoming form submission.
What is the use of UTF 8?
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 size). UTF stands for Unicode Transformation Format. The '8' means it uses 8-bit blocks to represent a character.
How many UTF 8 characters are there?
UTF-8 is a variable length encoding with a minimum of 8 bits per character. Characters with higher code points will take up to 32 bits. Quote from Wikipedia: "UTF-8 encodes each of the 1,112,064 code points in the Unicode character set using one to four 8-bit bytes (termed "octets" in the Unicode Standard)."
Is ascii valid UTF 8?
Any ASCII string is a valid UTF-8 string. An ASCII character is simply a byte value in [0,127] or [0x00, 0x7F] in hexadecimal. That is, the most significant bit is always zero. However, there are many more unicode characters than can be represented using a single byte.
What does UTF 8 mean in HTML?
Content-Type: text/html; charset=utf-8. Bad Header Response. Twisted Twin ∙ charset=UTF-8 stands for Character Set = Unicode Transformation Format-8. It is an octet (8-bit) lossless encoding of Unicode characters.
Why did UTF 8 replace the ascii?
It's almost exactly true that UTF-8 doesn't replace ASCII but incorporates it, because Unicode was designed that way. The difference is that ASCII is a 7-bit code, and does not define what to do with the extra bit if you have 8 bits to play with.