Opened a JPG picture with notepad, pasted all the "text" to a new notepad file, changed to .JPG and it no longer opens. Why?

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Music by Eric Matyas
https://www.soundimage.org
Track title: Puzzling Curiosities

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Chapters
00:00 Question
02:22 Accepted answer (Score 83)
03:47 Answer 2 (Score 40)
06:47 Answer 3 (Score 28)
08:11 Answer 4 (Score 6)
09:16 Thank you

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Full question
https://superuser.com/questions/782692/o...

Question links:
[image]: https://i.stack.imgur.com/6kQZD.jpg

Accepted answer links:
[NUL control character]: http://en.wikipedia.org/wiki/Control_cha...
[a reference to a post that warns about it]: http://webcache.googleusercontent.com/se...?
[BOM]: http://en.wikipedia.org/wiki/Byte_order_...

Answer 2 links:
[wikipedia-null terminated strings]: http://en.wikipedia.org/wiki/Null-termin...
[beyond compare (commercial,trial)]: http://www.scootersoftware.com/moreinfo....
[other binary compare tools]: https://stackoverflow.com/questions/8166...
[linker]: http://en.wikipedia.org/wiki/Linker_%28c...
[Universal Extractor]: http://legroom.net/software/uniextract
[Jason C]: https://superuser.com/users/245945/jason...
[WM_SETTEXT]: http://msdn.microsoft.com/en-us/library/...
[SetWindowText]: http://msdn.microsoft.com/en-us/library/...

Answer 3 links:
[HxD by Maël Hörz]: http://mh-nexus.de/en/hxd/
[A hex viewer / editor plugin for Notepad++]: https://stackoverflow.com/questions/1461...
[file signature magic number]: http://en.wikipedia.org/wiki/List_of_fil...

Answer 4 links:
[Wikipedia's "Windows Write" article]: https://en.wikipedia.org/wiki/Windows_Wr...

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Tags
#windows #jpeg #notepad

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