@naeem For a sensible answer, I need to know more information. Which JSON file is it and what is it for?
JSON file is easy to create, just click "Write to file", for example, with the name "my_file.json". You can find the content (syntax) of JSON here: https://developer.mozilla.org/en-US/docs/Learn/JavaScript/Objects/JSON
Can you give me more information on how this can be best resolved if there is a way?
Only the developer can solve this problem. You can avoid this problem if you don't allow one browser to take up more than 3-4gb of RAM (Removing unnecessary or used elements on the page).