Chrome says my extension s manifest file is missing or unreadable

Question

I m a new chrome extension developer  and I was going through the Chrome tutorial on making a  Hello World  extension  here s my code                 name    My First Extension          version    1 0          manifest version   2         description    The first extension that I made           browser action             default icon    icon png                   permissions             http   api flickr com                     When I went to load the unpacked extension it said the manifest file was missing or unreadable  Yes I have the image in a folder with it and it is correctly named manifest json

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If you are downloading samples from developer chrome com its possible that your actual folder is contained in a folder with the same name and this is creating a problem  For example your extracted sample extension named tabCapture will lool like this   C  Users     tabCapture tabCapture

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I also encountered this issue   My problem was that I renamed the folder my extension was in  so all I had to do was delete and reload the extension   Thought this might help some people out there

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Mine also was funny  While copypasting   manifest json  from the tutorial  i also managed to copy a leading space  Couldn t get why it s not finding it

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In my case it was the problem of building the extension  I was pointing at an extension src  with manifest and everything  but without a build  If you run into this scenario run npm i then npm build

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Some permissions issue for default sample   I wanted to see how it works  I am creating the first extension  so I downloaded a simpler one   Downloaded  Typed URL History  sample from     https   developer chrome com extensions examples api history showHistory zip  which can be found at     https   developer chrome com extensions samples  this worked great  hope it helps

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Something that commonly happens is that the manifest file isn t named properly   Double check the name  and extension  and be sure that it doesn t end with  txt  for example    In order to determine this  make sure you aren t hiding file extensions    Open Windows Explorer Go to Folder and Search Options   View tab Uncheck Hide extensions for known file types   Also  note that the naming of the manifest file is  in fact  case sensitive  i e  manifest json    MANIFEST JSON

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Kindly check whether you have installed right version of ChromeDriver or not   In my case    installing correct version helped

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My problem was slightly different   By default Eclipse saved my manifest json as an ANSI encoded text file   Solution     Open in Notepad File -  Save As select UTF-8 from the encoding drop-down in the bottom left  Save

[google-chrome-extension] Chrome says my extension's manifest file is missing or unreadable

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