Character Avatar Image Replacer (JAI-CAIR)

By: Unimportant_person
If you're in the majority of JanitorAI users, stay off my account for your own good

It should go without saying, but this is DESKTOP/LAPTOP/PC ONLY!

If you want to contact me about JAI-CAIR, do so here

Ever been using an absolutely beautiful bot, but the image sucks?

Until JAI actually starts to natively allow image changing, I've created my own solution.

It lowkey sucks ass, and if you can improve upon it I highly recommend you do. Hell, I don't even really care if you share it as long as you credit me for the OG :)

How to use (for chrome, you can probably adapt it for other browsers)

1. Install the Tampermonkey browser extension

If you already have tampermonkey, and know how it works, skip this entire section to find the downloads for my script.

You need to enable a certain setting for this extension to work: https://www.tampermonkey.net/faq.php#Q209

You will not need to really learn how to use this extension as I'll walk you through that.

Tampermonkey is a super useful extension that basically allows you to write scripts to modify/change webpages.

It will be used here to store the JAI-CAIR script.

I'd highly recommend pinning it.

2. Go to the dashboard

Click on the extension, and a menu will pop up. Locate the gear icon with "Dashboard" as it's title. Click on that.

3. Go to the "utilities" section

At the top of the dashboard should be a small menu, and you should see a utilities section, along with things like "settings".

Click on this section.

4. Download my script

Downloads will be located at the end of this guide

5. Import my script!

Choose the "import from file" option in the utilities section. Choose my script, and wait for it to load.

Once loaded, click install userscript to install it, and boom! You're done!

Downloads

I host JAI-CAIR's script on catbox, so when you visit the download link it won't actually download the file and will instead display it.

To follow my guide above, just copy the raw text and save it to a file with the ".js" extension.

If you have no idea what a file extension is, look up a tutorial on how to enable them.

JAI-CAIR 1.1

JAI-CAIR 1.0 (don't use this one)

How to use

To view the menu, click ctrl + shift + alt + I. You won't be able to add image replacements unless you're on a https://janitorai.com/characters page.

Adding a replacement is fairly simple. You can either upload via file or URL, and it works instantly.

When disabled, the replacements will still be visible on the menu but won't take effect.

If you delete a replacement, you'll need to reload the page for it to take effect.

Known issues:

There's some pages I've tried to make it work on, but having made the majority of this script at like 2:00 in the morning, I couldn't figure it out. So just deal with it, the important part is it works for chats and on character pages.

Edit

Pub: 09 Nov 2025 06:36 UTC

Edit: 09 Nov 2025 07:13 UTC

Views: 72