{"id":236,"date":"2026-08-21T17:51:44","date_gmt":"2026-08-21T17:51:44","guid":{"rendered":"https:\/\/netguide.io\/tools\/base32-encoder-decoder\/"},"modified":"2026-08-21T17:51:44","modified_gmt":"2026-08-21T17:51:44","slug":"base32-encoder-decoder","status":"publish","type":"post","link":"https:\/\/netguide.io\/tools\/de\/base32-encoder-decoder\/","title":{"rendered":"Base32 Encoder \/ Decoder"},"content":{"rendered":"<div id=\"netgu-2626166963\" class=\"netgu-before-content netgu-entity-placement\"><script async src=\"\/\/pagead2.googlesyndication.com\/pagead\/js\/adsbygoogle.js?client=ca-pub-6258556257245998\" crossorigin=\"anonymous\"><\/script><ins class=\"adsbygoogle\" style=\"display:block;\" data-ad-client=\"ca-pub-6258556257245998\" \ndata-ad-slot=\"3494115342\" \ndata-ad-format=\"auto\"><\/ins>\n<script> \n(adsbygoogle = window.adsbygoogle || []).push({}); \n<\/script>\n<\/div>\n<style>\n.wp-b32-container { max-width:100%; background:#fff; padding:20px; border:1px solid #ddd; border-radius:10px; font-family:-apple-system, sans-serif; color:#333; }\n.wp-b32-title { margin:0 0 15px 0; color:#2271b1; font-size:1.4rem; }\n.wp-b32-grid { display:grid; grid-template-columns:repeat(auto-fit, minmax(140px, 1fr)); gap:12px; margin-bottom:10px; }\n.wp-b32-input-group label { display:block; font-size:11px; font-weight:bold; margin-bottom:4px; text-transform:uppercase; color:#666; }\n.wp-b32-input-group input, .wp-b32-input-group select { width:100%; padding:8px; border:1px solid #ccc; border-radius:4px; box-sizing:border-box; }\n.wp-b32-checkbox-group { margin:15px 0; font-size:12px; display:flex; align-items:center; gap:8px; color:#666; }\n.wp-b32-note { font-size:12px; color:#666; margin-top:12px; min-height:1em; }\n.wp-b32-warn { color:#d63638; font-weight:bold; }\n.wp-b32-results { margin-top:20px; border-top:2px solid #eee; padding-top:15px; }\n.wp-b32-res-item { display:flex; justify-content:space-between; margin-bottom:6px; font-size:14px; gap:10px; }\n.wp-b32-total { font-weight:bold; font-size:18px; color:#2271b1; margin:10px 0; padding:5px 0; border-top:1px solid #eee; border-bottom:1px solid #eee; }\n.wp-b32-val { color:#2271b1; font-weight:bold; }\n.wp-b32-out { width:100%; box-sizing:border-box; padding:10px; border:1px solid #ccc; border-radius:4px; font-family:monospace; font-size:13px; word-break:break-all; background:#f7f7f7; margin-top:6px; }\n.wp-b32-btn { background:#2271b1; color:#fff; border:none; padding:9px 14px; border-radius:4px; cursor:pointer; font-size:13px; margin-top:10px; }\n<\/style><script>window.wpB32L = {\"err\":\"Fehler\"};<\/script>\n<div class=\"wp-b32-container\">\n  <h3 class=\"wp-b32-title\">Base32 Encoder \/ Decoder<\/h3>\n  <div class=\"wp-b32-input-group\"><label>Eingabe<\/label><textarea id=\"b32-in\" style=\"width:100%;box-sizing:border-box;height:100px;padding:10px;border:1px solid #ccc;border-radius:5px;font-family:monospace;font-size:13px;\" oninput=\"b32Proc('enc')\">Hallo Welt<\/textarea><\/div>\n  <div style=\"display:flex;gap:8px;flex-wrap:wrap;margin:6px 0;\">\n    <button class=\"wp-b32-btn\" onclick=\"b32Proc('enc')\">Kodieren<\/button>\n    <button class=\"wp-b32-btn\" style=\"background:#f0f0f1;color:#2271b1;\" onclick=\"b32Proc('dec')\">Dekodieren<\/button>\n  <\/div>\n  <label style=\"display:block;font-size:11px;font-weight:bold;text-transform:uppercase;color:#666;margin:8px 0 4px;\">Ergebnis<\/label>\n  <textarea id=\"b32-out\" style=\"width:100%;box-sizing:border-box;height:100px;padding:10px;border:1px solid #ccc;border-radius:5px;font-family:monospace;font-size:13px;\" readonly><\/textarea>\n  <button class=\"wp-b32-btn\" onclick=\"copyB32()\">Kopieren<\/button>\n  <div class=\"wp-b32-note\">Base32 verwendet A\u2013Z und 2\u20137. H\u00e4ufig bei TOTP\/2FA-Secrets und wo Gro\u00df-\/Kleinschreibung keine Rolle spielen darf.<\/div>\n<\/div>\n<script>\nvar WPB32='ABCDEFGHIJKLMNOPQRSTUVWXYZ234567';\nfunction b32enc(bytes){ var o='',buf=0,bits=0; for(var i=0;i<bytes.length;i++){ buf=buf*256+bytes[i]; bits+=8; while(bits>=5){ bits-=5; o+=WPB32[Math.floor(buf\/Math.pow(2,bits))%32]; buf=buf%Math.pow(2,bits); } } if(bits>0){ o+=WPB32[Math.floor(buf*Math.pow(2,5-bits))%32]; } while(o.length%8!==0) o+='='; return o; }\nfunction b32dec(str){ str=String(str).toUpperCase().replace(\/=+$\/,'').replace(\/[^A-Z2-7]\/g,''); var buf=0,bits=0,bytes=[]; for(var i=0;i<str.length;i++){ var v=WPB32.indexOf(str[i]); if(v<0)continue; buf=buf*32+v; bits+=5; if(bits>=8){ bits-=8; bytes.push(Math.floor(buf\/Math.pow(2,bits))%256); buf=buf%Math.pow(2,bits); } } return new TextDecoder().decode(new Uint8Array(bytes)); }\nfunction b32Proc(mode){ var inp=document.getElementById('b32-in').value; var o=document.getElementById('b32-out'); var L=window.wpB32L||{}; try{ if(mode==='enc'){ o.value=b32enc(Array.prototype.slice.call(new TextEncoder().encode(inp))); } else { o.value=b32dec(inp); } }catch(e){ o.value=(L.err||'Error')+': '+e.message; } }\nfunction copyB32(){ var o=document.getElementById('b32-out'); if(!o.value)return; o.focus(); o.select(); try{navigator.clipboard.writeText(o.value);}catch(e){} }\nb32Proc('enc');\n<\/script>\n\n\n<div id=\"netgu-116888869\"><script async src=\"https:\/\/pagead2.googlesyndication.com\/pagead\/js\/adsbygoogle.js?client=ca-pub-6258556257245998\"\r\n     crossorigin=\"anonymous\"><\/script>\r\n<!-- NetGuide.io-After-Widget-Tools -->\r\n<ins class=\"adsbygoogle\"\r\n     style=\"display:block\"\r\n     data-ad-client=\"ca-pub-6258556257245998\"\r\n     data-ad-slot=\"5175852350\"\r\n     data-ad-format=\"auto\"\r\n     data-full-width-responsive=\"true\"><\/ins>\r\n<script>\r\n     (adsbygoogle = window.adsbygoogle || []).push({});\r\n<\/script><\/div>\n\n\n\n<h2 class=\"wp-block-heading\">Base32 kodieren und dekodieren<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Base32 stellt beliebige Daten mit nur 32 Zeichen dar (A\u2013Z und 2\u20137). Das ist n\u00fctzlich, wo Gro\u00df-\/Kleinschreibung verloren geht oder Zeichen wie 0\/O verwechselt werden k\u00f6nnten \u2013 etwa bei 2FA-Secrets.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>RFC 4648:<\/strong> Standard-Base32 mit Auff\u00fcllung durch \u201e=&#8221;.<\/li>\n\n\n<li><strong>TOTP\/2FA:<\/strong> Authenticator-Apps speichern das geheime Schl\u00fcsselmaterial meist als Base32.<\/li>\n\n\n<li><strong>Robust:<\/strong> Keine mehrdeutigen Zeichen, unempfindlich gegen\u00fcber Gro\u00df-\/Kleinschreibung.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Verwandte Tools<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><a href=\"\/tools\/de\/base64-encoder-decoder\/\">Base64 Encoder \/ Decoder<\/a><\/li>\n\n\n<li><a href=\"\/tools\/de\/rot13-caesar-verschluesselung\/\">ROT13 \/ Caesar-Verschl\u00fcsselung<\/a><\/li>\n<\/ul>\n\n\n<div id=\"netgu-4218956558\" class=\"netgu-after-content netgu-entity-placement\"><script async src=\"\/\/pagead2.googlesyndication.com\/pagead\/js\/adsbygoogle.js?client=ca-pub-6258556257245998\" crossorigin=\"anonymous\"><\/script><ins class=\"adsbygoogle\" style=\"display:block;\" data-ad-client=\"ca-pub-6258556257245998\" \ndata-ad-slot=\"4559785002\" \ndata-ad-format=\"auto\"><\/ins>\n<script> \n(adsbygoogle = window.adsbygoogle || []).push({}); \n<\/script>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>Text nach Base32 (RFC 4648) kodieren und dekodieren \u2013 z. B. f\u00fcr TOTP-Secrets und URLs. L\u00e4uft komplett im Browser.<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[23],"tags":[],"class_list":["post-236","post","type-post","status-publish","format-standard","hentry","category-decoder-encoder"],"brizy_media":[],"_links":{"self":[{"href":"https:\/\/netguide.io\/tools\/wp-json\/wp\/v2\/posts\/236","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/netguide.io\/tools\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/netguide.io\/tools\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/netguide.io\/tools\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/netguide.io\/tools\/wp-json\/wp\/v2\/comments?post=236"}],"version-history":[{"count":0,"href":"https:\/\/netguide.io\/tools\/wp-json\/wp\/v2\/posts\/236\/revisions"}],"wp:attachment":[{"href":"https:\/\/netguide.io\/tools\/wp-json\/wp\/v2\/media?parent=236"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/netguide.io\/tools\/wp-json\/wp\/v2\/categories?post=236"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/netguide.io\/tools\/wp-json\/wp\/v2\/tags?post=236"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}