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I have a string I'm trying to decode, I originally thought it was base64 but when I put it through an online decoder the output is mostly gibberish. I'm not sure where to go from here as it doesn't blatantly look like anything I know. (and it's been a while since I've studied this stuff)

Here it is:

H4sIAKoT6GQCAwFNAbL+iVBORw0KGgoAAAANSUhEUgAAADwAAAA8AQMAAAAAMksxAAAABlBMVEXl5eUfHx+1Uy19AAABAklEQVQoz2XRsWrDMBAG4DsM8VIw2dqlfgWbLg6U+lXyCAUvHkyqUKiXPIA75VVUDJ0EeQW3hXh10KIsvkqKwHLyD8c33cF/cJucDshy4gZbiww5vusBCRiAh1SJeLdSMxw+h2ucaYYE2o/XDDxkaIDmqDgWOXkACJpKT4N7i7wTUHwpPgHKJ5SLNRhsLZbqhJJ+AdJmwIFqD8ie493ijU94KeWenZWHqE9URfUMsmcRwQWhxUlj1JtreAS1nqDT7iU13CB2uHsg7Dzk1B6DlBxWDuGSbC0qwt4h+DPV8TEgZrFxEHpzP8emoB4MRosERDhA6SFDEXZQ2S//sO+YT7jJP3rj4WhDFg9MAAAAAElFTkSuQmCCa36uV00BAAA

Thanks!

Fergus Shaw
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  • Welcome to Stack Overflow. Please include some of your source code and show what you've tried and what you want to achieve. See [how to ask a good question](https://stackoverflow.com/help/how-to-ask) – righteousness_wealth Sep 01 '23 at 00:48
  • *I originally thought it was base64 but...* - 1. [the conclusion that something is not base64 because you can't decode it directly to clear text is wrong](https://stackoverflow.com/a/67455896/7329832) 2. Your string starts with `H4s`, which is typical for base64 encoded GZIP files. Try [this](https://stackoverflow.com/questions/12902540/read-from-a-gzip-file-in-python) – jps Sep 01 '23 at 07:45
  • I also just noticed that a part of the string (after the first +) starts with `iVBOR..., which is typcal for png files. If you just take that part (from iVBOR to the end) to https://base64.guru/converter/decode/image, you get a QR-Code image. – jps Sep 01 '23 at 08:01

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