クロームのブックマークレットを使ってSlackに共有するやつ

url_share.js

javascript: (
    function () {
        const ENDPOINT = 'https://slack.com/api/chat.postMessage';
        const TOKEN = 'トークン';
        const CHANNEL = '#チャンネル';
        const BY = "@SlackのID";
        const url = location.href;
        fetch(`${ENDPOINT}?token=${TOKEN}`, { method: 'POST', body: EncodeHTMLForm({ channel: CHANNEL, text: `${url} by ${BY}`, link_names: true, unfurl_links: true }), headers: { "Content-Type": "application/x-www-form-urlencoded; charset=utf-8", } });
        function EncodeHTMLForm(data) {
            const params = [];
            for (let name in data) {
                let value = data[name];
                let param = encodeURIComponent(name) + '=' + encodeURIComponent(value);
                params.push(param);
            }
            return params.join('&').replace(/%20/g, '+');
        }
    }()
);

url_share_2.js

javascript: (
    function () {
        const ENDPOINT = 'https://slack.com/api/chat.postMessage';
        const TOKEN = 'トークン';
        const CHANNEL = '#チャンネル';
        const BY = "@SlackのID";
        const url = location.href;
        fetch(`${ENDPOINT}?token=${TOKEN}`,
              { method: 'POST', 
               body: EncodeHTMLForm({ 
                   channel: CHANNEL, 
                   text: `${BY} is watching ${url} 👁 👁`, 
                   link_names: true, unfurl_links: true }), 
               headers: { "Content-Type": "application/x-www-form-urlencoded; charset=utf-8", } 
              });
        function EncodeHTMLForm(data) {
            const params = [];
            for (let name in data) {
                let value = data[name];
                let param = encodeURIComponent(name) + '=' + encodeURIComponent(value);
                params.push(param);
            }
            return params.join('&').replace(/%20/g, '+');
        }
    }()
);