Displays logs and Javascript errors in an overlay on top of your site. Useful for mobile webdevelopment. Enabled in 5 seconds
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.. displays logs and Javascript errors in an overlay on top of your site. Useful for mobile webdevelopment. Installed in 5 seconds [1]. Works on every device and browser [2].

It's useful when you want to see logs and the errors you [3] have created in a mobile browser while you are developing and debugging.

I found debugging is a bit hard on mobile devices since there is no magic button in mobile browser to see the console logs or Javascript errors and related source. There are a lot of remote-tools. Some are not available for all browsers, take time too much time to setup or aren't sync because of remote delays.

How to install (in 5 seconds)?

Add this piece of code somewhere in your html-page. Save document, refresh browser.
In the <head> before other <script> tags is probably the best place.

<script src="https://markknol.github.io/console-log-viewer/console-log-viewer.js"></script>

console log viewer

What does it do?

It captures console.log, console.info, console.warn, console.debug, console.error and window.onerror and displays it in an overlay on top of your site. That's it.


Close / Open console

  • Closes the console with the x button, and bring back with the Ξ button.
  • Tip: Toggle the console with the keyboard ~ tilde key.
  • Start closed using:
<script src="https://markknol.github.io/console-log-viewer/console-log-viewer.js?closed=true"></script>


  • Pause/resume the console logs by pressing the ► button
  • Start minimized using:
<script src="https://markknol.github.io/console-log-viewer/console-log-viewer.js?log_enabled=false"></script>


  • Minimize the console with the - button, and bring back to normal with the + button.
  • Start minimized using:
<script src="https://markknol.github.io/console-log-viewer/console-log-viewer.js?minimized=true"></script>


  • Switch top/bottom alignment by pressing the or button in the console.
  • Start bottom aligned using:
<script src="https://markknol.github.io/console-log-viewer/console-log-viewer.js?align=bottom"></script>

Displaying errors

Clicking on a Javascript-error opens the source in a new tab (demo).


The source can be found here: https://github.com/markknol/console-log-viewer/blob/gh-pages/console-log-viewer.js


[1] .. depends on your copy/paste skills
[2] .. if this isn't true report here
[3] .. protip: blame someone else