What is the format or encoding of a file with data like this?

5. EF BF BD is the REPLACEMENT CHARACTER encoded in UTF-8. It likely means that this data was in some format other than UTF-8 (say ISO-8859-1), but was parsed at some point by a UTF-8 system that replaced the illegal bytes with REPLACEMENT CHARACTER. Without more background on how you came to have this file, it's hard to …

UTF-8 Tool

Hex and octal UTF-8 byte input should have the bytes separated by spaces. "UTF-8 bytes as Latin-1 characters" is what you typically see when you display a UTF-8 file with a terminal or editor that only knows about 8-bit characters. Spaces are ignored in the input of bytes as Latin-1 characters, to make it easier to cut-and-paste from dump output.

"EF BB BF" at the beginning of JSON files created in Visual Studio

Add a comment. 2. Change the encoding of the file - when saving there is a little down arrow that lets you go to advanced saving options, including the encoding. What you are seeing is the BOM (Byte Order Mark) - it indicates this is a Unicode file (UTF-8 in this case, I believe). You can also just strip it, which should let it parse without issue.

EF BF BD EF BF BD EF BF BD › seeseekey.net

Wenn nun bei dieser Kodierung ein Zeichen gefunden wird, welches nicht im Unicode abgebildet werden kann, so erhält dieses Zeichen den Wert EF BF BD – besagter Replacement Character. Damit ist dann auch erklärt warum die binären Dateien hauptsächlich nur noch aus diesen Zeichen bestanden. Die echten Daten wurden beim Kopiervorgang ...

browser - Weird characters in URL - Stack Overflow

There's always a "g", "s", and "z" parameter, and sometimes a "o" parameter that has values of 2 or 3. We've noticed that with our pages, a certain version of this script is correlated with seeing corrupted characters in the DOM: if "o" is omitted or set to 2, we'll see a Unicode FFFD injected near the end of the page or sometimes a Ux000E ...

Is "EF BF BF" an allowed character in XML (UTF-8)? - Stack …

If "EF BF BF" is a typo, and you meant "EF BB BF": . Yes, if it is the first bytes. They are the "BOM", Byte Order Mark, used to identify the endianness of the file. For UTF-16 and UTF-32-encoded files this is mandatory. For UTF-8, this is optional. Some systems might be confused by it if it is present, and it might give unexpected behavior if an UTF-8-file with BOM is used in …

=%EF%BF%BD <--?_

Unicode U+FFFD, UTF-8 0xEF 0xBF 0xBD, replacement character,: The replacement character (often a black diamond with a white question mark or an empty square box) is a symbol found in the Unicode standard at code point U+FFFD in the ...

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C# StreamWriter.WriteLine replacing A0 with EF BF BD - .NET …

At some point within 2007 something changed on my Windows XP system whereby this application started to replace any hex A0 with hex EF BF BD. The application is written using .net 2.0 and was created using C# VS2005 Express. I have since recompiled it with .NET 3.5 and C# VS 2008 Express installed with no resolution to the problem.

.NET 2.0: A0 being converted to EF BF BD

It appears that there has been some Microsoft auto-update that has occurred within this month (November 2007) that has caused a .NET 2.0 application that I wrote (using C#) to convert A0 to EF BF BD when running the following code: Previous to Nov 3, 2007 this application did not convert A0 and all was well. A0 happens to be a   in ISO 8859-1.

EF BB BF prepended - .NET Framework

this is done by means of System.IO.StreamWriter.Write (ControlChars.Quote) and normally works correctly. however if a large file (approx 14Mb) is generated the hex values as seen. with the Binary Editor EF BB BF appear immediately before the Quote character. (hex 22)

Whats going on with this byte array? - Stack Overflow

34. The original byte array is not encoded as UTF-8. The StreamReader therefore replaces each invalid byte with the replacement character U+FFFD. When that character gets encoded back to UTF-8, this results in the byte sequence EF BF BD. You cannot construct the original byte value from the string because the information is completely lost.