🤔 This script has been abandoned
It works, but it is no longer maintained
Short description
The script adds to every website a performance counter that can show a frames per second (FPS) value, frame time or used memory.
More screenshots below!

Usage
- Click on it with a left mouse button to change the mode
- Hold and drag to change its position
- Click with a right mouse button to hide
- Left click on the last visible position to show it again
How to install
Step 1. Browser that supports extensions and a scripts manager
To use scripts, first you need to install a scripts manager. My advice is Tampermonkey, since I use it too
Tampermonkey installation links for a different browsers, choose yours:
Chrome / Vivaldi Opera / Yandex Browser Firefox Safari Microsoft Edge
Step 2. Come back here
Refresh this page and click the green Install button at the top of this page. A new tab belonging to your scripts manager will open. Confirm the script installation
Step 3. Check if it works
Refresh the page where the script should work
Important
If you are going to use the script frequently, you will definitely be annoyed by it hanging on all websites you use.
You can make a list of a websites where the script should work:
- Open the control panel of your scripts manager and select the script.
- Replace the №9 string from
// @include *
to // @include https://yoursite.com
. Example: // @include https://reddit.com
- Every website needs its own "include" string. If you need to add a lot of websites, the script head part would look like this:
- Apply changes to the script using Ctrl+S or a toolbar
- Optional: make a backup in order to prevent deleting of your changes in case the script would get updated. However, if you're using Tampermonkey, it disables the script updates itself if you did any changes to the script
Screenshots