{"id":280,"date":"2026-08-22T09:54:06","date_gmt":"2026-08-22T09:54:06","guid":{"rendered":"https:\/\/netguide.io\/tools\/javascript-minifier\/"},"modified":"2026-08-22T09:55:33","modified_gmt":"2026-08-22T09:55:33","slug":"javascript-minifier","status":"publish","type":"post","link":"https:\/\/netguide.io\/tools\/de\/javascript-minifier\/","title":{"rendered":"JavaScript-Minifier"},"content":{"rendered":"<div id=\"netgu-1986126490\" 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-jsm-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-jsm-title { margin:0 0 15px 0; color:#2271b1; font-size:1.4rem; }\n.wp-jsm-grid { display:grid; grid-template-columns:repeat(auto-fit, minmax(140px, 1fr)); gap:12px; margin-bottom:10px; }\n.wp-jsm-input-group label { display:block; font-size:11px; font-weight:bold; margin-bottom:4px; text-transform:uppercase; color:#666; }\n.wp-jsm-input-group input, .wp-jsm-input-group select { width:100%; padding:8px; border:1px solid #ccc; border-radius:4px; box-sizing:border-box; }\n.wp-jsm-checkbox-group { margin:15px 0; font-size:12px; display:flex; align-items:center; gap:8px; color:#666; }\n.wp-jsm-note { font-size:12px; color:#666; margin-top:12px; min-height:1em; }\n.wp-jsm-warn { color:#d63638; font-weight:bold; }\n.wp-jsm-results { margin-top:20px; border-top:2px solid #eee; padding-top:15px; }\n.wp-jsm-res-item { display:flex; justify-content:space-between; margin-bottom:6px; font-size:14px; gap:10px; }\n.wp-jsm-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-jsm-val { color:#2271b1; font-weight:bold; }\n.wp-jsm-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-jsm-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.wpJsmL = {\"loading\":\"Lade Minifier\u2026\",\"chars\":\"Zeichen\",\"err\":\"Fehler\"};<\/script>\n<div class=\"wp-jsm-container\">\n  <h3 class=\"wp-jsm-title\">JavaScript-Minifier<\/h3>\n  <div class=\"wp-jsm-input-group\"><label>JavaScript<\/label><textarea id=\"jsm-in\" style=\"width:100%;box-sizing:border-box;height:150px;padding:10px;border:1px solid #ccc;border-radius:5px;font-family:monospace;font-size:13px;\" oninput=\"minifyJs()\">function add(a, b) {\n  \/\/ sum of two numbers\n  const total = a + b;\n  return total;\n}\nconst result = add(2, 3);<\/textarea><\/div>\n  <div id=\"jsm-stat\" class=\"wp-jsm-note\" style=\"margin:8px 0;\"><\/div>\n  <label style=\"display:block;font-size:11px;font-weight:bold;text-transform:uppercase;color:#666;margin:4px 0;\">Minifiziert<\/label>\n  <textarea id=\"jsm-out\" style=\"width:100%;box-sizing:border-box;height:150px;padding:10px;border:1px solid #ccc;border-radius:5px;font-family:monospace;font-size:13px;\" readonly><\/textarea>\n  <button class=\"wp-jsm-btn\" onclick=\"copyJsm()\">Kopieren<\/button>\n  <div class=\"wp-jsm-note\">Nutzt die Bibliothek Terser \u2013 denselben Minifier, den viele Build-Tools verwenden. Variablen werden umbenannt und Code komprimiert.<\/div>\n<\/div>\n<script src=\"https:\/\/cdn.jsdelivr.net\/npm\/terser@5.31.6\/dist\/bundle.min.js\"><\/script>\n<script>\nasync function minifyJs(){\n  var code=document.getElementById('jsm-in').value; var o=document.getElementById('jsm-out'); var st=document.getElementById('jsm-stat'); var L=window.wpJsmL||{};\n  if(typeof Terser==='undefined'){ st.innerText=L.loading||'...'; setTimeout(minifyJs,400); return; }\n  if(!code.trim()){ o.value=''; st.innerText=''; return; }\n  try{ var res=await Terser.minify(code); if(res.error) throw res.error; o.value=res.code||''; var b=code.length, a=(res.code||'').length; var s=b>0?Math.round((1-a\/b)*100):0; st.innerText=b+' \\u2192 '+a+' '+(L.chars||'chars')+' (\\u2212'+s+'%)'; }\n  catch(e){ o.value=(L.err||'Error')+': '+e.message; st.innerText=''; }\n}\nfunction copyJsm(){ var o=document.getElementById('jsm-out'); if(!o.value)return; o.focus(); o.select(); try{navigator.clipboard.writeText(o.value);}catch(e){} }\nwindow.addEventListener('load', minifyJs);\n<\/script>\n\n\n<div id=\"netgu-3039218350\"><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\">JavaScript zuverl\u00e4ssig minifizieren<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Der Minifier verkleinert JavaScript-Code mit Terser \u2013 dem verbreiteten Werkzeug, das auch in vielen Build-Systemen steckt. Kommentare und Leerzeichen fallen weg, Variablennamen werden gek\u00fcrzt und Ausdr\u00fccke zusammengefasst.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Echter Minifier:<\/strong> Anders als eine simple Textersetzung versteht Terser den Code und kann ihn sicher umschreiben.<\/li>\n\n\n<li><strong>Kompression:<\/strong> Umbenennung lokaler Variablen, Entfernen toten Codes und mehr.<\/li>\n\n\n<li><strong>Lokal:<\/strong> Dein Code verl\u00e4sst den Browser nicht.<\/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\/css-minifier\/\">CSS-Minifier<\/a><\/li>\n\n\n<li><a href=\"\/tools\/de\/json-formatter-validator\/\">JSON Formatter &#038; Validator<\/a><\/li>\n<\/ul>\n\n\n<div id=\"netgu-1009460327\" 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>JavaScript verkleinern und komprimieren \u2013 mit dem echten Terser-Minifier. K\u00fcrzere Dateien, schnelleres Laden. L\u00e4uft 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":[53],"tags":[],"class_list":["post-280","post","type-post","status-publish","format-standard","hentry","category-converter"],"brizy_media":[],"_links":{"self":[{"href":"https:\/\/netguide.io\/tools\/wp-json\/wp\/v2\/posts\/280","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=280"}],"version-history":[{"count":1,"href":"https:\/\/netguide.io\/tools\/wp-json\/wp\/v2\/posts\/280\/revisions"}],"predecessor-version":[{"id":290,"href":"https:\/\/netguide.io\/tools\/wp-json\/wp\/v2\/posts\/280\/revisions\/290"}],"wp:attachment":[{"href":"https:\/\/netguide.io\/tools\/wp-json\/wp\/v2\/media?parent=280"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/netguide.io\/tools\/wp-json\/wp\/v2\/categories?post=280"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/netguide.io\/tools\/wp-json\/wp\/v2\/tags?post=280"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}