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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Base32 Decoder — DevDunia Comics</title>
<meta name="description" content="Decode Base32 encoded data back to original text. Free online Base32 decoder for developers.">
<meta property="og:type" content="website">
<meta property="og:url" content="https://devdunia.com/base32-decoder.html">
<meta property="og:title" content="Base32 Decoder — DevDunia Comics">
<meta property="og:description" content="Decode Base32 encoded data back to original text. Free online Base32 decoder.">
<meta property="og:image" content="https://devdunia.com/images/logo.png">
<link rel="preconnect" href="https://fonts.googleapis.com">
<link href="https://fonts.googleapis.com/css2?family=Bangers&family=Comic+Neue:wght@400;700&family=Space+Mono:wght@400;700&display=swap" rel="stylesheet">
<style>
:root{--ink:#1a1410;--paper:#fdf3e3;--paper2:#fbe9cc;--red:#e63946;--blue:#1d6fb8;--yellow:#ffd23f;--green:#3fa34d;--pink:#ff6b9d;--purple:#8a4fff;--orange:#ff8c42;}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0;}
body{font-family:'Comic Neue',cursive;font-weight:400;color:var(--ink);background-color:var(--paper);background-image:radial-gradient(var(--ink) 0.5px,transparent 0.6px);background-size:14px 14px;background-attachment:fixed;min-height:100vh;}
.paper-overlay{position:fixed;inset:0;background:rgba(253,243,227,.78);pointer-events:none;z-index:0;}
.page-wrap{position:relative;z-index:1;max-width: 1240px;margin:0 auto;padding: 20px 32px 60px;}
.panel{background:var(--paper);border:4px solid var(--ink);border-radius:6px;box-shadow:7px 7px 0 var(--ink);overflow:hidden;margin-bottom:22px;}
.panel-header{background:var(--ink);color:var(--yellow);font-family:'Bangers',cursive;font-size:1.2rem;letter-spacing:2px;padding:8px 16px;display:flex;align-items:center;justify-content:space-between;gap:10px;}
.panel-header .panel-tag{font-family:'Space Mono',monospace;font-size:.65rem;font-weight:700;background:var(--yellow);color:var(--ink);padding:2px 7px;border-radius:3px;}
.panel-body{padding:18px 20px;}
.comic-textarea{width:100%;background:#fff;border:3px solid var(--ink);border-radius:6px;padding:12px 14px;font-family:'Space Mono',monospace;font-size:.82rem;color:var(--ink);line-height:1.6;resize:vertical;min-height:130px;box-shadow:inset 3px 3px 0 rgba(0,0,0,.06);outline:none;transition:border-color .15s;}
.comic-textarea:focus{border-color:var(--blue);}
.comic-textarea::placeholder{color:#aaa;font-style:italic;}
.comic-textarea[readonly]{background:var(--paper2);cursor:default;}
.btn-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:14px;}
.btn{font-family:'Bangers',cursive;font-size:1.1rem;letter-spacing:1px;border:3px solid var(--ink);border-radius:6px;padding:8px 20px;cursor:pointer;box-shadow:4px 4px 0 var(--ink);transition:transform .1s,box-shadow .1s;text-transform:uppercase;}
.btn:active{transform:translate(2px,2px);box-shadow:2px 2px 0 var(--ink);}
.btn-primary{background:var(--orange);color:#fff;}.btn-danger{background:var(--red);color:#fff;}
.error-bubble{display:none;position:relative;background:#fff0f0;border:3px solid var(--red);border-radius:14px;padding:10px 14px;margin-top:12px;font-size:.9rem;font-weight:700;color:var(--red);}
.error-bubble::before{content:'';position:absolute;top:-16px;left:22px;border-width:0 10px 16px;border-style:solid;border-color:transparent transparent var(--red);}
.error-bubble::after{content:'';position:absolute;top:-11px;left:24px;border-width:0 8px 12px;border-style:solid;border-color:transparent transparent #fff0f0;}
.error-bubble.show{display:block;}
.output-wrap{position:relative;}
.copy-btn{position:absolute;top:8px;right:8px;font-family:'Bangers',cursive;font-size:.95rem;letter-spacing:1px;background:var(--ink);color:var(--yellow);border:2px solid var(--ink);border-radius:4px;padding:3px 10px;cursor:pointer;box-shadow:2px 2px 0 rgba(0,0,0,.4);transition:transform .1s,box-shadow .1s;}
.copy-btn:active{transform:translate(1px,1px);box-shadow:1px 1px 0 rgba(0,0,0,.4);}
.stats-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:14px;}
.stat-chip{font-family:'Space Mono',monospace;font-size:.72rem;font-weight:700;padding:4px 10px;border:2px solid var(--ink);border-radius:4px;box-shadow:2px 2px 0 var(--ink);display:flex;align-items:center;gap:5px;}
.stat-chip .stat-label{opacity:.65;font-weight:400;}
.chip-blue{background:var(--blue);color:#fff;}.chip-green{background:var(--green);color:#fff;}.chip-purple{background:var(--purple);color:#fff;}.chip-yellow{background:var(--yellow);color:var(--ink);}
.examples-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px;}
.example-card{background:var(--paper2);border:3px solid var(--ink);border-radius:6px;box-shadow:4px 4px 0 var(--ink);padding:10px 12px;cursor:pointer;transition:transform .1s,box-shadow .1s;}
.example-card:hover{transform:translate(-2px,-2px);box-shadow:6px 6px 0 var(--ink);}
.example-card:active{transform:translate(1px,1px);box-shadow:2px 2px 0 var(--ink);}
.example-title{font-family:'Bangers',cursive;font-size:1rem;letter-spacing:1px;margin-bottom:4px;}
.example-val{font-family:'Space Mono',monospace;font-size:.68rem;color:var(--blue);word-break:break-all;margin-bottom:2px;}
.example-arrow{font-size:.75rem;color:var(--ink);opacity:.55;}
@media(max-width:600px){
.examples-grid{grid-template-columns:1fr;}
}
</style>
</head>
<body>
<div class="paper-overlay"></div>
<div data-masthead></div>
<div class="page-wrap">
<div data-tool-hero
data-title="Base32 Decoder"
data-chapter="03"
data-category="Encoders & Decoders"
data-icon="🔓"
data-desc="Decode Base32-encoded strings back to plain text instantly. No server, pure client-side decoding."
data-color="blue"
data-badges="CLIENT-SIDE,NO SERVER,FREE,INSTANT"
data-badge-colors="white,ink,yellow,red">
</div>
<div class="panel">
<div class="panel-header">
📥 PASTE BASE32 DATA HERE
<span class="panel-tag">INPUT</span>
</div>
<div class="panel-body">
<textarea id="base32-input" class="comic-textarea" rows="6" placeholder="Paste Base32 encoded data here... e.g. JBSWY3DPEBLW64TMMQQQ===="></textarea>
<div class="btn-row">
<button id="decode-btn" class="btn btn-primary">⚡ Decode Base32!</button>
<button id="clear-btn" class="btn btn-danger">🗑 Clear</button>
</div>
<div id="error-bubble" class="error-bubble">
💥 <span id="error-msg">Invalid Base32 data!</span>
</div>
</div>
</div>
<div class="panel" id="output-panel" style="display:none;">
<div class="panel-header">
📤 DECODED OUTPUT
<span class="panel-tag">OUTPUT</span>
</div>
<div class="panel-body">
<div class="output-wrap">
<textarea id="base32-output" class="comic-textarea" rows="7" readonly></textarea>
<button id="copy-btn" class="copy-btn">📋 COPY</button>
</div>
<div class="stats-row">
<div class="stat-chip chip-blue"><span class="stat-label">B32 SIZE</span><span id="stat-b32">—</span></div>
<div class="stat-chip chip-green"><span class="stat-label">DECODED</span><span id="stat-decoded">—</span></div>
<div class="stat-chip chip-purple"><span class="stat-label">COMPRESSION</span><span id="stat-compression">—</span></div>
<div class="stat-chip chip-yellow"><span class="stat-label">PADDING</span><span id="stat-padding">—</span></div>
</div>
</div>
</div>
<div class="panel">
<div class="panel-header">
📚 TRY AN EXAMPLE — CLICK TO LOAD!
<span class="panel-tag">EXAMPLES</span>
</div>
<div class="panel-body">
<div class="examples-grid">
<div class="example-card" data-encoded="JBSWY3DPEBLW64TMMQQQ====">
<div class="example-title" style="color:var(--blue);">Simple Text</div>
<div class="example-val">JBSWY3DPEBLW64TMMQQQ====</div>
<div class="example-arrow">↓ "Hello World"</div>
</div>
<div class="example-card" data-encoded="ORSXG5A=">
<div class="example-title" style="color:var(--green);">Short String</div>
<div class="example-val">ORSXG5A=</div>
<div class="example-arrow">↓ "test"</div>
</div>
<div class="example-card" data-encoded="JBSWY3DPEBTHE33NEBCWG2DPMJQXG2BB=">
<div class="example-title" style="color:var(--purple);">Longer Text</div>
<div class="example-val">JBSWY3DPEBTHE33NEBCWG2DPMJQXG2BB=</div>
<div class="example-arrow">↓ "Hello from DevDunia"</div>
</div>
<div class="example-card" data-encoded="NB2HI4DTHIXS65DFON2GK3TFN5XHIYLUMU======">
<div class="example-title" style="color:var(--red);">URL</div>
<div class="example-val">NB2HI4DTHIXS65DFON2GK3TFN5XHIYLUMU======</div>
<div class="example-arrow">↓ "https://devdunia.com"</div>
</div>
</div>
</div>
</div>
</div>
<script>
(function(){
var inputEl = document.getElementById('base32-input');
var outputEl = document.getElementById('base32-output');
var decBtn = document.getElementById('decode-btn');
var clearBtn = document.getElementById('clear-btn');
var copyBtn = document.getElementById('copy-btn');
var outPanel = document.getElementById('output-panel');
var errBubble= document.getElementById('error-bubble');
var errMsg = document.getElementById('error-msg');
var statB32 = document.getElementById('stat-b32');
var statDec = document.getElementById('stat-decoded');
var statComp = document.getElementById('stat-compression');
var statPad = document.getElementById('stat-padding');
var ALPHA = 'ABCDEFGHIJKLMNOPQRSTUVWXYZ234567';
function showErr(msg){errMsg.textContent=msg;errBubble.classList.add('show');}
function hideErr(){errBubble.classList.remove('show');}
function formatBytes(n){if(n===0)return'0 B';if(n<1024)return n+' B';return(n/1024).toFixed(1)+' KB';}
function isValidBase32(str){
return /^[A-Z2-7]+=*$/.test(str) && [0,1,3,4,6].indexOf((str.match(/=+$/)||[''])[0].length)!==-1;
}
function decodeFromBase32(input) {
var clean = input.replace(/=+$/,'');
var binary = '';
for (var i=0;i<clean.length;i++){
var idx = ALPHA.indexOf(clean[i]);
if(idx===-1) throw new Error('Invalid character: '+clean[i]);
binary += idx.toString(2).padStart(5,'0');
}
binary = binary.substring(0, Math.floor(binary.length/8)*8);
var bytes = [];
for (var j=0;j<binary.length;j+=8) bytes.push(parseInt(binary.substr(j,8),2));
return new TextDecoder().decode(new Uint8Array(bytes));
}
function decode() {
var raw = inputEl.value.trim();
if (!raw) {showErr('Please paste some Base32 data first!');return;}
var clean = raw.replace(/\s/g,'').toUpperCase();
if (!isValidBase32(clean)){
showErr('Invalid Base32! Only A-Z, 2-7 and = padding are allowed.');
outPanel.style.display='none'; return;
}
try {
var decoded = decodeFromBase32(clean);
outputEl.value = decoded;
outPanel.style.display = 'block';
hideErr();
var b32b = new Blob([clean]).size;
var decb = new Blob([decoded]).size;
var comp = b32b>0 ? (((b32b-decb)/b32b)*100).toFixed(1) : '0';
var padMatch = clean.match(/=+$/);
statB32.textContent = formatBytes(b32b);
statDec.textContent = formatBytes(decb);
statComp.textContent = comp + '%';
statPad.textContent = (padMatch?padMatch[0].length:0) + ' chars';
} catch(e) {showErr('Decode failed: '+e.message);outPanel.style.display='none';}
}
decBtn.addEventListener('click', decode);
clearBtn.addEventListener('click',function(){
inputEl.value=''; outputEl.value='';
outPanel.style.display='none'; hideErr();
});
copyBtn.addEventListener('click',function(){
outputEl.select();
try{document.execCommand('copy');}catch(e){}
if(navigator.clipboard) navigator.clipboard.writeText(outputEl.value).catch(function(){});
var orig=copyBtn.textContent;
copyBtn.textContent='✔ COPIED!'; copyBtn.style.background='var(--green)';
setTimeout(function(){copyBtn.textContent=orig;copyBtn.style.background='var(--ink)';},1800);
});
inputEl.addEventListener('keydown',function(e){if((e.ctrlKey||e.metaKey)&&e.key==='Enter')decode();});
var cards = document.querySelectorAll('.example-card');
for (var i=0;i<cards.length;i++){
cards[i].addEventListener('click',function(){
inputEl.value=this.dataset.encoded;
decode();
});
}
inputEl.value = 'JBSWY3DPEBLW64TMMQQQ====';
})();
</script>
<script src="masthead.js"></script>
<script src="hero-banner.js"></script>
<script src="author-card.js"></script>
</body>
</html>