JSFiddle - React, Tailwind, and code Playground

by brownie2026

HTML

<!DOCTYPE html>
<html lang="ja">
<head>
    <meta charset="UTF-8">
    <title>MHTML自動ダウンロード</title>
</head>
<body>
    <h1>MHTMLファイルのダウンロード</h1>
    <p>自動的にダウンロードが開始されない場合は、以下のボタンをクリックしてください。</p>
    <button id="downloadBtn">MHTMLをダウンロード</button>

    <script>
        // 1. ここにダウンロードしたいMHTMLのソースコードを記述します
        const mhtmlContent = `MIME-Version: 1.0
Content-Type: multipart/related; boundary="----MultipartBoundary----"

------MultipartBoundary----
Content-Type: text/html; charset="utf-8"
Content-Location: http://example.com

From: <Saved by Blink>
Snapshot-Content-Location: https://www.google.com/search?rlz=1CAZWGK_enJP1230&sourceid=chrome&ie=UTF-8&amc=1&cud=0&safe=active&ssui=on&sxsrf=APpeQnu_KuoOpjVmQqtw9gsRrE2WsfvD6w%3A1789532446866&q=.&mstk=AUtExfAtwIpiINevfQE3YI7tn9jy9FDZuy3SN1bDWvrRqR0uoi9NIsymiptCiZm-_tb4Eh_LrIVR2PCdydgJbLqn-js2CHg0Md97FdoIKuEGeEdPfKvG5V6nUwyWjAVwyJMqVnEuUMuk65Fb6MjXzPKfCkr7wdyMiXUIafguWg8Vx7IAYgu1p87f3A3vf8nyZW3ieBAbxcXV1zzizvVeAXfXzfumRweFY1d3ZwyiRwZNxShMM5fxFobFZwVjGQ&csuir=1&udm=50
Subject: . - Google Search
Date: Wed, 16 Sep 2026 13:24:38 +0900
MIME-Version: 1.0
Content-Type: multipart/related;
	type="text/html";
	boundary="----MultipartBoundary--bfxrPKZALz5B5EKhM92ToneDknDcBDUY4gb7VpPDVq----"


------MultipartBoundary--bfxrPKZALz5B5EKhM92ToneDknDcBDUY4gb7VpPDVq----
Content-Type: text/html
Content-ID: <[email protected]>
Content-Transfer-Encoding: quoted-printable
Content-Location: https://www.google.com/search?rlz=1CAZWGK_enJP1230&sourceid=chrome&ie=UTF-8&amc=1&cud=0&safe=active&ssui=on&sxsrf=APpeQnu_KuoOpjVmQqtw9gsRrE2WsfvD6w%3A1789532446866&q=.&mstk=AUtExfAtwIpiINevfQE3YI7tn9jy9FDZuy3SN1bDWvrRqR0uoi9NIsymiptCiZm-_tb4Eh_LrIVR2PCdydgJbLqn-js2CHg0Md97FdoIKuEGeEdPfKvG5V6nUwyWjAVwyJMqVnEuUMuk65Fb6MjXzPKfCkr7wdyMiXUIafguWg8Vx7IAYgu1p87f3A3vf8nyZW3ieBAbxcXV1zzizvVeAXfXzfumRweFY1d3ZwyiRwZNxShMM5fxFobFZwVjGQ&csuir=1&udm=50

<!DOCTYPE html><html itemscope=3D""...