Ophel Atlas is available as a browser extension for Chrome-based browsers and Firefox, and as a userscript through Greasy Fork or ScriptCat. The browser extension is recommended — it offers a fuller feature set, better compatibility, and does not require developer mode after the initial install.
Use the browser extension version whenever possible. The userscript version
has feature limitations compared to the extension and may have lower
compatibility on some platforms.
GitHub Releases and browser store updates are separate steps. A new GitHub
Release means the files are available on GitHub, but Chrome Web Store,
Microsoft Edge Add-ons, Firefox Add-ons, Greasy Fork, and ScriptCat each have
their own submission, review, approval, and rollout process. Store and script
directory versions can temporarily lag behind GitHub Releases or differ from
each other. Check the public listing for each store to confirm the current
published version.
Download
Install from a store or script directory
Install directly from the Chrome Web Store — no developer mode required.Open the Chrome Web Store listing
Click Add to Chrome
Click Add to Chrome and confirm the permissions prompt.
Install directly from the Microsoft Edge Add-ons store.Open the Edge Add-ons listing
Click Get
Click Get and confirm the permissions prompt.
Install from the Firefox Add-ons store for a persistent, auto-updating installation.Open the Firefox Add-ons listing
Click Add to Firefox
Click Add to Firefox and confirm the permissions prompt.
Use this method if you cannot install browser extensions, or if you prefer the Tampermonkey workflow.The userscript version has feature limitations compared to the browser extension. Install the extension version when possible.
Install Tampermonkey
If you do not already have it, install Tampermonkey for your browser. Open the Greasy Fork listing
Click Install this script
Click Install this script. Tampermonkey opens a confirmation dialog — click Install.
Use this method if you prefer ScriptCat as your userscript manager.The userscript version has feature limitations compared to the browser extension. Install the extension version when possible.
Install ScriptCat
If you do not already have it, install ScriptCat for your browser. Open the ScriptCat listing
Install the script
Click the install button on ScriptCat and confirm the installation in ScriptCat.
Manual sideload from GitHub Releases
Use this method if you want to install a specific version, test a pre-release build, or install without a store.
Do not install *-cws-upload.zip or *-edge-addons-upload.zip manually.
Those files are maintainer submission packages for browser stores. They do not
mean the store version has already been approved or rolled out.
Chrome / Edge (manual)
Firefox (manual)
Userscript (manual)
Download the release archive
Unzip the archive
Extract the zip to a permanent folder on your computer. Do not delete the folder after loading — the browser loads the extension from it every time.
Open the extensions page
In Chrome: navigate to chrome://extensions. In Edge: navigate to edge://extensions.
Enable Developer mode
Toggle Developer mode on (top-right corner of the extensions page).
Load the unpacked folder
Click Load unpacked and select the folder you extracted in step 2.
Firefox only allows temporary add-on loading through the debugging interface. The add-on is removed when you restart the browser, so you must reload it after each restart. For a persistent install, use the Firefox Add-ons store tab above. Download the release archive
Open the Firefox debugging page
Navigate to about:debugging#/runtime/this-firefox.
Load the temporary add-on
Click Load Temporary Add-on and select the downloaded zip file. You do not need to extract it.
Install Tampermonkey
If you do not already have it, install Tampermonkey for your browser. Download the userscript file
Install the script
Drag the .user.js file into your browser window, or open the Tampermonkey dashboard and use Import from file. Confirm the install when prompted.
Next steps
Once installed, open any supported AI site and read the Panel Overview to understand the three tabs, floating buttons, ghost mode, and edge snap. 
