{"id":134,"date":"2026-08-20T18:44:29","date_gmt":"2026-08-20T18:44:29","guid":{"rendered":"https:\/\/netguide.io\/tools\/json-formatter-validator\/"},"modified":"2026-08-20T18:46:27","modified_gmt":"2026-08-20T18:46:27","slug":"json-formatter-validator","status":"publish","type":"post","link":"https:\/\/netguide.io\/tools\/de\/json-formatter-validator\/","title":{"rendered":"JSON Formatter &#038; Validator"},"content":{"rendered":"<div id=\"netgu-3863090899\" 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-js-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-js-title { margin:0 0 15px 0; color:#2271b1; font-size:1.4rem; }\n.wp-js-grid { display:grid; grid-template-columns:repeat(auto-fit, minmax(140px, 1fr)); gap:12px; margin-bottom:10px; }\n.wp-js-input-group label { display:block; font-size:11px; font-weight:bold; margin-bottom:4px; text-transform:uppercase; color:#666; }\n.wp-js-input-group input, .wp-js-input-group select { width:100%; padding:8px; border:1px solid #ccc; border-radius:4px; box-sizing:border-box; }\n.wp-js-checkbox-group { margin:15px 0; font-size:12px; display:flex; align-items:center; gap:8px; color:#666; }\n.wp-js-note { font-size:12px; color:#666; margin-top:12px; min-height:1em; }\n.wp-js-warn { color:#d63638; font-weight:bold; }\n.wp-js-results { margin-top:20px; border-top:2px solid #eee; padding-top:15px; }\n.wp-js-res-item { display:flex; justify-content:space-between; margin-bottom:6px; font-size:14px; gap:10px; }\n.wp-js-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-js-val { color:#2271b1; font-weight:bold; }\n.wp-js-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-js-btn { background:#2271b1; color:#fff; border:none; padding:9px 14px; border-radius:4px; cursor:pointer; font-size:13px; margin-top:10px; }\n<\/style><style>\n.wp-js-area { width:100%; height:230px; padding:12px; border:1px solid #ccc; border-radius:5px; font-family:'Courier New', monospace; font-size:13px; resize:vertical; box-sizing:border-box; }\n.wp-js-status-box { padding:10px; border-radius:5px; font-size:14px; font-weight:bold; text-align:center; margin:12px 0; background:#f9f9f9; border:1px solid #eee; }\n.wp-js-status-box.status-valid { background:#e7f7ed; color:#2e7d32; border-color:#a5d6a7; }\n.wp-js-status-box.status-invalid { background:#fdf2f2; color:#d32f2f; border-color:#ef9a9a; }\n.wp-js-actions { display:flex; gap:8px; flex-wrap:wrap; margin-bottom:12px; }\n.wp-js-actions button { padding:9px 14px; border:none; border-radius:4px; cursor:pointer; font-weight:bold; font-size:13px; }\n.wp-js-actions .btn-primary { background:#2271b1; color:#fff; }\n.wp-js-actions .btn-sec { background:#f0f0f1; color:#2271b1; }\n.wp-js-actions .btn-danger { background:#f0f0f1; color:#d63638; }\n.wp-js-err { background:#fff5f5; border-left:4px solid #d32f2f; padding:10px; margin-top:10px; font-size:12px; }\n.wp-js-err pre { margin:5px 0 0 0; white-space:pre-wrap; word-break:break-all; color:#b71c1c; font-family:monospace; }\n<\/style><script>window.wpJsL = {\"waiting\":\"Warte auf Eingabe\u2026\",\"valid\":\"\u2713 G\u00fcltiges JSON\",\"invalid\":\"\u2717 Ung\u00fcltiges JSON\"};<\/script>\n<div class=\"wp-js-container\">\n  <h3 class=\"wp-js-title\">JSON Formatter &#038; Validator<\/h3>\n  <textarea id=\"js-in\" class=\"wp-js-area\" placeholder=\"JSON hier einf\u00fcgen\u2026\" oninput=\"jsRun('check')\"><\/textarea>\n  <div id=\"js-status\" class=\"wp-js-status-box\">Warte auf Eingabe\u2026<\/div>\n  <div class=\"wp-js-actions\">\n    <button class=\"btn-primary\" onclick=\"jsRun('format')\">Formatieren<\/button>\n    <button class=\"btn-sec\" onclick=\"jsRun('min')\">Minifizieren<\/button>\n    <button class=\"btn-danger\" onclick=\"jsClear()\">Leeren<\/button>\n  <\/div>\n  <div id=\"js-err\" class=\"wp-js-err\" style=\"display:none;\"><strong>Fehlerdetails:<\/strong><pre id=\"js-errtext\"><\/pre><\/div>\n<\/div>\n<script>\nfunction jsRun(mode){\n  var ta=document.getElementById('js-in'); var st=document.getElementById('js-status');\n  var errBox=document.getElementById('js-err'); var errTxt=document.getElementById('js-errtext');\n  var L=window.wpJsL||{}; var v=ta.value;\n  if(!v.trim()){ st.className='wp-js-status-box'; st.innerText=L.waiting; errBox.style.display='none'; return; }\n  try{ var obj=JSON.parse(v);\n    if(mode==='format') ta.value=JSON.stringify(obj,null,2);\n    else if(mode==='min') ta.value=JSON.stringify(obj);\n    st.className='wp-js-status-box status-valid'; st.innerText=L.valid; errBox.style.display='none';\n  }catch(e){ st.className='wp-js-status-box status-invalid'; st.innerText=L.invalid; errBox.style.display='block'; errTxt.innerText=e.message; }\n}\nfunction jsClear(){ document.getElementById('js-in').value=''; jsRun('check'); }\njsRun('check');\n<\/script>\n\n\n<div id=\"netgu-694093388\"><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\">JSON validieren und formatieren<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">F\u00fcge JSON ein \u2013 etwa aus einer API-Antwort oder Konfigurationsdatei. Das Tool pr\u00fcft die Syntax in Echtzeit, formatiert auf Knopfdruck \u00fcbersichtlich mit Einr\u00fcckung oder minifiziert f\u00fcr den kompakten Einsatz. Alles l\u00e4uft im Browser \u00fcber den nativen JSON-Parser; nichts wird gesendet.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Formatieren:<\/strong> Richtet das JSON mit 2 Leerzeichen Einr\u00fcckung sauber aus (Pretty-Print).<\/li>\n\n\n<li><strong>Minifizieren:<\/strong> Entfernt alle Leerzeichen und Zeilenumbr\u00fcche \u2013 ideal f\u00fcr die \u00dcbertragung.<\/li>\n\n\n<li><strong>H\u00e4ufige Fehler:<\/strong> Nachgestellte Kommas und einfache Anf\u00fchrungszeichen sind in JSON nicht erlaubt \u2013 nur doppelte.<\/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\/yaml-validator-formatter\/\">YAML Validator &#038; Formatter<\/a><\/li>\n\n\n<li><a href=\"\/tools\/de\/base64-encoder-decoder\/\">Base64 Encoder \/ Decoder<\/a><\/li>\n<\/ul>\n\n\n<div id=\"netgu-1460965295\" 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>JSON online validieren, formatieren und minifizieren \u2013 mit Fehleranzeige. 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