You'll know you don't wanna publish your app's JSON response, which may include important information, to some third-party website that could easily or accidentally log this info. I think, decrypted passwords might be in your response, API keys, and the name of your app. Lots of stuff can't nobody but you should see. So here, make your own JSON PRETTY PRINTER using PHP and RUN IT LOCALLY on your computer.
Save the file. Name it something such as JSON-pretty-printer.php and then run it on the command line by typing 'php' and then the path to your script. Hit the enter button.
<?php $str = <<<'EOT' {"name_first":"John"} EOT; echo json_encode(json_decode($str), JSON_PRETTY_PRINT | JSON_UNESCAPED_SLASHES); ?>
Save the file. Name it something such as JSON-pretty-printer.php and then run it on the command line by typing 'php' and then the path to your script. Hit the enter button.