How to install the Cnotely extension

Cnotely Card Notes ships a browser extension that turns any browser into a capture entry: right-click clipping, select-to-card, and screenshot OCR. It is available on the Chrome, Edge and Firefox stores, and can also be loaded manually from a zip package when a store is not accessible.

Option 1 — Install from the extension store (recommended)

Browser	Store
Chrome	Chrome Web Store
Microsoft Edge	Edge Add-ons
Firefox	Firefox Add-ons

Click Add to [browser], confirm the permission dialog, and the Cnotely icon will appear in your toolbar. Store versions update automatically — this is the simplest way to install.

Option 2 — Install from a zip package (manual load)

Use this when the store is not accessible in your region, or when you use a Chromium-based browser that is not covered by the stores (for example 360 Secure Browser, QQ Browser, Opera, Brave).

Step 1 — Download and extract the package

• Chromium-based browsers (Chrome, Edge, 360, QQ, Opera, Brave...): download the Chromium package (.zip)
• Firefox: download the Firefox package (.zip)

Extract the zip to a permanent folder, for example C:\Users\you\cnotely-extension. Do not delete or move this folder afterwards — the browser keeps reading the extension from it, and deleting it will disable the extension.

Step 2 — Load the unpacked extension

Microsoft Edge

1. Open edge://extensions/
2. Turn on Developer mode (in the left sidebar)
3. Click Load unpacked
4. Select the folder you extracted in step 1

Chrome and other Chromium browsers

1. Open chrome://extensions/ (in 360 / QQ / Opera / Brave, open their extension management page)
2. Enable Developer mode (top-right corner)
3. Click Load unpacked
4. Select the folder you extracted in step 1

Firefox

1. Open about:debugging#/runtime/this-firefox
2. Click Load Temporary Add-on
3. Select the manifest.json file inside the extracted folder

Firefox removes manually loaded add-ons when you restart the browser. For a permanent installation on Firefox, please use the Firefox Add-ons store version.

Step 3 — Verify

After loading, the Cnotely icon should appear in your toolbar, and right-clicking any web page should show the Cnotely menu items (save as note, save as card, screenshot OCR). If you see them, installation is complete.

Troubleshooting

• “Load unpacked” is greyed out: make sure Developer mode is enabled on the extension page.
• The browser says the package is invalid: you must extract the zip first — the browser cannot load a zip directly; select the extracted folder, not the zip file.
• Loaded once but gone after restart (Firefox): this is expected for temporary add-ons; install from the store instead.
• The icon does not appear: close and reopen the browser, or refresh the extension page; make sure the extracted folder was not moved or deleted.
• Store version and manual version conflict: install only one copy. If you previously installed from a store, remove it (or the manual copy) and keep just one.

Next: learn how to capture, make cards and review →