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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.

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Download

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Install from a store or script directory

Install directly from the Chrome Web Store — no developer mode required.
1

Open the Chrome Web Store listing

Go to the Ophel Atlas listing on the Chrome Web Store.
2

Click Add to Chrome

Click Add to Chrome and confirm the permissions prompt.
3

Open a supported AI site

Navigate to any supported platform — for example, chatgpt.com or claude.ai. The Ophel panel appears automatically on the right side of the page.

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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.
1

Download the release archive

Go to GitHub Releases and download the latest ophel-vX.X.X-chrome.zip.
2

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.
3

Open the extensions page

In Chrome: navigate to chrome://extensions. In Edge: navigate to edge://extensions.
4

Enable Developer mode

Toggle Developer mode on (top-right corner of the extensions page).
5

Load the unpacked folder

Click Load unpacked and select the folder you extracted in step 2.

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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.
Last modified on July 4, 2026