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How to make simple Google Chrome Extension

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Created by:
DEX7RA
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In this article, we would like to show you how to make a simple Chrome Extension.

Below we present a simple extension that after pressing Alt + C will copy the title and URL of the currently opened tab and put them in the clipboard.

Note:

Check out this article, to see how to load your extension into Chrome:
How to load extension into Google Chrome

Project structure

example_chrome_extension/
   |
   +-- manifest.json
   |
   +-- background.js

manifest.json

{
    "name": "Copy tool",
    "manifest_version": 3,
    "version": "0.1",
    "description": "Copy title and URL of current website",
    "commands": {
        "copy": {
            "suggested_key": {
                "default": "Alt+C"
            },
            "description": "Copy shortcut"
        }
    },
    "permissions": [
        "activeTab",
        "scripting",
        "tabs"
    ],
    "background": {
        "service_worker": "background.js"
    }
}

background.js

const copyTitleAndURL = () => {
    const dataToClipboard = document.title + '\n' + window.location.toString();

    const temporaryElement = document.createElement('textarea');
    temporaryElement.value = dataToClipboard;
    document.body.appendChild(temporaryElement);
    temporaryElement.select();
    document.execCommand('Copy');
    document.body.removeChild(temporaryElement);
};

chrome.commands.onCommand.addListener(async (command) => {
    const [tab] = await chrome.tabs.query({
        active: true,
        currentWindow: true,
    });

    if (command === 'copy') {
        chrome.scripting.executeScript({
            target: { tabId: tab.id },
            function: copyTitleAndURL,
        });
    }
});
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