Save the console.log in Chrome to a file

Good news

Chrome dev tools now allows you to save the console output to a file natively

1. Open the console
2. Right-click
3. Select "save as.."

Chrome Developer instructions here.

I have found a great and easy way for this.

1. In the console - right click on the console logged object

2. Click on 'Store as global variable'

3. See the name of the new variable - e.g. it is variableName1

4. Type in the console: JSON.stringify(variableName1)

5. Copy the variable string content: e.g. {"a":1,"b":2,"c":3}

6. Go to some JSON online editor: e.g. https://jsoneditoronline.org/

There is an open-source javascript plugin that does just that, but for any browser - debugout.js

Debugout.js records and save console.logs so your application can access them. Full disclosure, I wrote it. It formats different types appropriately, can handle nested objects and arrays, and can optionally put a timestamp next to each log. You can also toggle live-logging in one place, and without having to remove all your logging statements.

I needed to do the same thing and this is the solution I found:

1. Enable logging from the command line using the flags:

   --enable-logging --v=1

This logs everything Chrome does internally, but it also logs all the console.log() messages as well. The log file is called chrome_debug.log and is located in the User Data Directory which can be overridden by supplying --user-data-dir=PATH (more info here).

2. Filter the log file you get for lines with CONSOLE(\d+).

Note that console logs do not appear with --incognito.