Image Info on Hover

Hiển thị kích thước, dung lượng và định dạng ảnh khi hover

K instalaci tototo skriptu si budete muset nainstalovat rozšíření jako Tampermonkey, Greasemonkey nebo Violentmonkey.

You will need to install an extension such as Tampermonkey to install this script.

K instalaci tohoto skriptu si budete muset nainstalovat rozšíření jako Tampermonkey nebo Violentmonkey.

K instalaci tohoto skriptu si budete muset nainstalovat rozšíření jako Tampermonkey nebo Userscripts.

You will need to install an extension such as Tampermonkey to install this script.

K instalaci tohoto skriptu si budete muset nainstalovat manažer uživatelských skriptů.

(Už mám manažer uživatelských skriptů, nechte mě ho nainstalovat!)

You will need to install an extension such as Stylus to install this style.

You will need to install an extension such as Stylus to install this style.

You will need to install an extension such as Stylus to install this style.

You will need to install a user style manager extension to install this style.

You will need to install a user style manager extension to install this style.

You will need to install a user style manager extension to install this style.

(Už mám manažer uživatelských stylů, nechte mě ho nainstalovat!)

// ==UserScript==
// @name         Image Info on Hover
// @namespace    http://tampermonkey.net/
// @version      1.0
// @description  Hiển thị kích thước, dung lượng và định dạng ảnh khi hover
// @author       You
// @match        *://*/*
// @grant        GM_xmlhttpRequest
// @connect      *
// ==/UserScript==

(function () {
    'use strict';

    let tooltip = document.createElement("div");
    tooltip.style.position = "fixed";
    tooltip.style.zIndex = 999999;
    tooltip.style.background = "rgba(0,0,0,0.8)";
    tooltip.style.color = "#fff";
    tooltip.style.padding = "6px 10px";
    tooltip.style.fontSize = "12px";
    tooltip.style.borderRadius = "6px";
    tooltip.style.pointerEvents = "none";
    tooltip.style.display = "none";
    document.body.appendChild(tooltip);

    function formatSize(bytes) {
        if (!bytes) return "Unknown";
        if (bytes < 1024) return bytes + " B";
        if (bytes < 1024 * 1024) return (bytes / 1024).toFixed(1) + " KB";
        return (bytes / (1024 * 1024)).toFixed(2) + " MB";
    }

    function getImageInfo(img, callback) {
        let url = img.src;

        GM_xmlhttpRequest({
            method: "HEAD",
            url: url,
            onload: function (res) {
                let size = res.responseHeaders.match(/content-length:\s*(\d+)/i);
                let type = res.responseHeaders.match(/content-type:\s*([^\s;]+)/i);

                callback({
                    width: img.naturalWidth,
                    height: img.naturalHeight,
                    size: size ? formatSize(parseInt(size[1])) : "Unknown",
                    type: type ? type[1] : "Unknown"
                });
            },
            onerror: function () {
                callback({
                    width: img.naturalWidth,
                    height: img.naturalHeight,
                    size: "Unknown",
                    type: "Unknown"
                });
            }
        });
    }

    document.addEventListener("mouseover", function (e) {
        let img = e.target.closest("img");
        if (!img) return;

        tooltip.style.display = "block";
        tooltip.innerText = "Loading...";

        getImageInfo(img, function (info) {
            tooltip.innerText =
                `${info.width} × ${info.height}\n` +
                `${info.size}\n` +
                `${info.type}`;
        });

        document.addEventListener("mousemove", moveTooltip);
    });

    document.addEventListener("mouseout", function (e) {
        if (e.target.closest("img")) {
            tooltip.style.display = "none";
            document.removeEventListener("mousemove", moveTooltip);
        }
    });

    function moveTooltip(e) {
        tooltip.style.top = (e.clientY + 15) + "px";
        tooltip.style.left = (e.clientX + 15) + "px";
    }
})();