Fetch, display, and improve HTML, CSS, JavaScript, or API data of a webpage with a clean white theme. Now supports various API response types.
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// ==UserScript==
// @name Webpage Source Viewer and API Data Fetcher
// @namespace https://greasyfork.org/en/users/1391731-ramen-sukuna
// @version 2.0
// @description Fetch, display, and improve HTML, CSS, JavaScript, or API data of a webpage with a clean white theme. Now supports various API response types.
// @author Ramen Sukuna🍜
// @match *://*/*
// @grant GM_xmlhttpRequest
// @grant GM_addStyle
// @icon https://attic.sh/nvbu08kd47uzl3mf9cpisiazptio
// ==/UserScript==
(function () {
'use strict';
const guiHTML = `
<div id="sourceViewer" style="position:fixed; top:50%; left:50%; transform:translate(-50%, -50%); width:80%; height:80%; background:white; color:black; border:2px solid black; z-index:9999; overflow:auto; padding:10px; display:none; font-family: Arial, sans-serif; border-radius:15px;">
<button id="closeSourceViewer" style="position:absolute; top:5px; right:5px; background:white; color:black; border:1px solid black; border-radius:10px;">Close</button>
<h3>Webpage Source Viewer</h3>
<label>Enter URL:</label>
<input type="text" id="sourceUrl" style="width:50%; color:black; background:white; border:1px solid black; border-radius:5px;" placeholder="e.g., https://example.com">
<br><br>
<label>API URL (Optional):</label>
<input type="text" id="apiUrl" style="width:50%; color:black; background:white; border:1px solid black; border-radius:5px;" placeholder="e.g., https://api.example.com/data">
<br><br>
<label>Find:</label>
<input type="text" id="findText" style="width:30%; color:black; background:white; border:1px solid black; border-radius:5px;" placeholder="Text to find">
<span style="margin:0 10px;">to</span>
<label>Replace:</label>
<input type="text" id="replaceText" style="width:30%; color:black; background:white; border:1px solid black; border-radius:5px;" placeholder="Text to replace with">
<br><br>
<button id="fetchSource" style="background:white; color:black; border:1px solid black; border-radius:5px;">Fetch Source</button>
<button id="fetchApiData" style="background:white; color:black; border:1px solid black; border-radius:5px;">Fetch API Data</button>
<button id="replaceSourceText" style="background:white; color:black; border:1px solid black; border-radius:5px;">Replace Text</button>
<button id="improveSource" style="background:white; color:black; border:1px solid black; border-radius:5px;">Improve💪</button>
<hr>
<div id="sourceResults">
<h4>HTML</h4>
<textarea id="htmlSource" style="width:100%; height:150px; background:white; color:black; border:1px solid black; border-radius:5px;" readonly></textarea>
<button class="copyButton" data-target="htmlSource" style="background:white; color:black; border:1px solid black; border-radius:5px;">Copy HTML</button>
<h4>CSS</h4>
<textarea id="cssSource" style="width:100%; height:150px; background:white; color:black; border:1px solid black; border-radius:5px;" readonly></textarea>
<button class="copyButton" data-target="cssSource" style="background:white; color:black; border:1px solid black; border-radius:5px;">Copy CSS</button>
<h4>JavaScript</h4>
<textarea id="jsSource" style="width:100%; height:150px; background:white; color:black; border:1px solid black; border-radius:5px;" readonly></textarea>
<button class="copyButton" data-target="jsSource" style="background:white; color:black; border:1px solid black; border-radius:5px;">Copy JavaScript</button>
<h4>API Data</h4>
<textarea id="apiData" style="width:100%; height:150px; background:white; color:black; border:1px solid black; border-radius:5px;" readonly></textarea>
<button class="copyButton" data-target="apiData" style="background:white; color:black; border:1px solid black; border-radius:5px;">Copy API Data</button>
</div>
</div>
<button id="openSourceViewer" style="position:fixed; bottom:10px; right:10px; background:white; color:black; border:1px solid black; z-index:9999; border-radius:5px;">View Source</button>
`;
document.body.insertAdjacentHTML('beforeend', guiHTML);
GM_addStyle(`
#sourceViewer textarea {
font-family: monospace;
}
#sourceViewer button {
margin: 5px;
}
#openSourceViewer {
border-radius: 5px;
}
#sourceViewer {
cursor: move;
}
`);
const sourceViewer = document.getElementById('sourceViewer');
const openButton = document.getElementById('openSourceViewer');
const closeButton = document.getElementById('closeSourceViewer');
const fetchButton = document.getElementById('fetchSource');
const fetchApiButton = document.getElementById('fetchApiData');
const replaceButton = document.getElementById('replaceSourceText');
const improveButton = document.getElementById('improveSource');
let isDragging = false;
let offsetX = 0;
let offsetY = 0;
openButton.addEventListener('click', () => {
sourceViewer.style.display = 'block';
});
closeButton.addEventListener('click', () => {
sourceViewer.style.display = 'none';
});
fetchButton.addEventListener('click', () => {
const url = document.getElementById('sourceUrl').value;
if (!url) {
alert('Please enter a URL!');
return;
}
GM_xmlhttpRequest({
method: 'GET',
url: url,
onload: function (response) {
const parser = new DOMParser();
const doc = parser.parseFromString(response.responseText, 'text/html');
document.getElementById('htmlSource').value = response.responseText;
const stylesheets = Array.from(doc.querySelectorAll('link[rel="stylesheet"], style'));
const css = stylesheets.map(sheet => sheet.outerHTML).join('\n');
document.getElementById('cssSource').value = css;
const scripts = Array.from(doc.querySelectorAll('script')).map(script => script.outerHTML).join('\n');
document.getElementById('jsSource').value = scripts;
},
onerror: function () {
alert('Failed to fetch the webpage. Please check the URL and try again.');
}
});
});
fetchApiButton.addEventListener('click', () => {
const apiUrl = document.getElementById('apiUrl').value;
if (!apiUrl) {
alert('Please enter an API URL!');
return;
}
GM_xmlhttpRequest({
method: 'GET',
url: apiUrl,
onload: function (response) {
const contentType = response.responseHeaders.match(/Content-Type:\s*([^;]*)/i);
const contentTypeValue = contentType ? contentType[1].toLowerCase() : '';
let displayContent = response.responseText;
if (contentTypeValue.includes('json')) {
try {
displayContent = JSON.stringify(JSON.parse(response.responseText), null, 2);
} catch (error) {
displayContent = 'Invalid JSON response.';
}
} else if (contentTypeValue.includes('html')) {
displayContent = response.responseText;
} else if (contentTypeValue.includes('xml')) {
const parser = new DOMParser();
const xmlDoc = parser.parseFromString(response.responseText, 'application/xml');
displayContent = new XMLSerializer().serializeToString(xmlDoc);
}
document.getElementById('apiData').value = displayContent;
},
onerror: function () {
alert('Failed to fetch the API data. Please check the API URL and try again.');
}
});
});
replaceButton.addEventListener('click', () => {
const findText = document.getElementById('findText').value;
const replaceText = document.getElementById('replaceText').value;
if (!findText) {
alert('Please enter text to find!');
return;
}
['htmlSource', 'cssSource', 'jsSource', 'apiData'].forEach((id) => {
const textarea = document.getElementById(id);
textarea.value = textarea.value.split(findText).join(replaceText);
});
alert(`Replaced all occurrences of "${findText}" with "${replaceText}".`);
});
improveButton.addEventListener('click', () => {
alert('Improvement feature not implemented yet.');
});
document.querySelectorAll('.copyButton').forEach(button => {
button.addEventListener('click', () => {
const targetId = button.getAttribute('data-target');
const textarea = document.getElementById(targetId);
textarea.select();
document.execCommand('copy');
alert(`${targetId} copied!`);
});
});
sourceViewer.addEventListener('mousedown', (event) => {
isDragging = true;
offsetX = event.clientX - sourceViewer.getBoundingClientRect().left;
offsetY = event.clientY - sourceViewer.getBoundingClientRect().top;
});
document.addEventListener('mousemove', (event) => {
if (isDragging) {
sourceViewer.style.left = `${event.clientX - offsetX}px`;
sourceViewer.style.top = `${event.clientY - offsetY}px`;
}
});
document.addEventListener('mouseup', () => {
isDragging = false;
});
})();