Install Kapture from GitHub

Kapture is a free, local-first Chrome extension for screenshots, screen recording, annotation, and an on-device library. Its Chrome Web Store listing is under review. For now, install it from the public GitHub source.

What you need

Desktop Google Chrome.
Node.js 22 and pnpm.
Git, or download and extract the repository’s source ZIP from GitHub.

Build the extension

Open a terminal and run:

git clone https://github.com/Otitodev/kapture.git
cd kapture
pnpm install --frozen-lockfile
pnpm build

If you downloaded the source ZIP, open a terminal in the extracted kapture folder and run the last two commands. The build creates .output/chrome-mv3/.

Load it in Chrome

Open chrome://extensions in Chrome.
Turn on Developer mode.
Select Load unpacked and choose the .output/chrome-mv3/ folder inside kapture.
Pin Kapture from Chrome’s extensions menu, then click its icon or use a capture shortcut.

To update, pull the latest GitHub source, run pnpm install --frozen-lockfile and pnpm build again, then select Reload on Kapture’s card in chrome://extensions.

Your captures stay in your browser profile. Kapture does not upload them; see the privacy details. Chrome restricts captures on internal pages such as chrome:// and the Chrome Web Store.

Install with a coding agent

Copy this prompt into your coding agent or LLM to get help building and loading Kapture from GitHub.

Help me install Kapture, a Chrome screenshot and screen recording extension, from its public source: https://github.com/Otitodev/kapture.

1. Check that this computer has Node.js 22, pnpm, Git, and desktop Google Chrome. Tell me if a prerequisite is missing.
2. Clone the repository, or use my existing checkout. In the kapture folder, run: pnpm install --frozen-lockfile, then pnpm build.
3. Confirm that .output/chrome-mv3/manifest.json exists after the build.
4. Help me open chrome://extensions, enable Developer mode, and choose Load unpacked with the .output/chrome-mv3 folder. If you cannot control Chrome's extension page, give me these exact manual steps.
5. Confirm that Kapture appears in Chrome's extensions list and that its popup opens. Keep installation local; do not publish or upload anything.