{"id":273,"date":"2026-08-21T23:36:43","date_gmt":"2026-08-21T23:36:43","guid":{"rendered":"https:\/\/netguide.io\/tools\/css-minifier-online\/"},"modified":"2026-08-21T23:36:43","modified_gmt":"2026-08-21T23:36:43","slug":"css-minifier-online","status":"publish","type":"post","link":"https:\/\/netguide.io\/tools\/en\/css-minifier-online\/","title":{"rendered":"CSS Minifier"},"content":{"rendered":"<div id=\"netgu-3785071045\" 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-cm-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-cm-title { margin:0 0 15px 0; color:#2271b1; font-size:1.4rem; }\n.wp-cm-grid { display:grid; grid-template-columns:repeat(auto-fit, minmax(140px, 1fr)); gap:12px; margin-bottom:10px; }\n.wp-cm-input-group label { display:block; font-size:11px; font-weight:bold; margin-bottom:4px; text-transform:uppercase; color:#666; }\n.wp-cm-input-group input, .wp-cm-input-group select { width:100%; padding:8px; border:1px solid #ccc; border-radius:4px; box-sizing:border-box; }\n.wp-cm-checkbox-group { margin:15px 0; font-size:12px; display:flex; align-items:center; gap:8px; color:#666; }\n.wp-cm-note { font-size:12px; color:#666; margin-top:12px; min-height:1em; }\n.wp-cm-warn { color:#d63638; font-weight:bold; }\n.wp-cm-results { margin-top:20px; border-top:2px solid #eee; padding-top:15px; }\n.wp-cm-res-item { display:flex; justify-content:space-between; margin-bottom:6px; font-size:14px; gap:10px; }\n.wp-cm-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-cm-val { color:#2271b1; font-weight:bold; }\n.wp-cm-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-cm-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.wpCmL = {\"chars\":\"chars\"};<\/script>\n<div class=\"wp-cm-container\">\n  <h3 class=\"wp-cm-title\">CSS Minifier<\/h3>\n  <div class=\"wp-cm-input-group\"><label>CSS<\/label><textarea id=\"cm-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=\"minifyCss()\">.button {\n  color: #2271b1;   \/* primary *\/\n  padding: 10px 20px;\n  border-radius: 4px;\n}<\/textarea><\/div>\n  <div id=\"cm-stat\" class=\"wp-cm-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;\">Minified<\/label>\n  <textarea id=\"cm-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-cm-btn\" onclick=\"copyCm()\">Copy<\/button>\n  <div class=\"wp-cm-note\">Removes comments and unnecessary whitespace. For complex edge cases (strings with braces), use a full build-tool minifier.<\/div>\n<\/div>\n<script>\nfunction minifyCss(){\n  var css=document.getElementById('cm-in').value; var before=css.length;\n  var m=css.replace(\/\\\/\\*[\\s\\S]*?\\*\\\/\/g,'');\n  m=m.replace(\/\\s+\/g,' ');\n  m=m.replace(\/\\s*([{}:;,>~+])\\s*\/g,'$1');\n  m=m.replace(\/;}\/g,'}');\n  m=m.trim();\n  document.getElementById('cm-out').value=m;\n  var L=window.wpCmL||{};\n  var saved= before>0 ? Math.round((1-m.length\/before)*100) : 0;\n  document.getElementById('cm-stat').innerText=before+' \\u2192 '+m.length+' '+(L.chars||'chars')+' (\\u2212'+saved+'%)';\n}\nfunction copyCm(){ var o=document.getElementById('cm-out'); if(!o.value)return; o.focus(); o.select(); try{navigator.clipboard.writeText(o.value);}catch(e){} }\nminifyCss();\n<\/script>\n\n\n<div id=\"netgu-2194035050\"><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\">Minify CSS<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">The minifier removes comments, line breaks and unnecessary whitespace from CSS code. This reduces the file size and speeds up loading your website. The status line tells you how many characters were saved.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Comments:<\/strong> <code>\/* \u2026 *\/<\/code> is removed.<\/li>\n\n\n<li><strong>Whitespace:<\/strong> Line breaks and multiple spaces are collapsed, unnecessary characters around braces and colons removed.<\/li>\n\n\n<li><strong>Limits:<\/strong> A simple minifier \u2013 for edge cases (e.g. braces in content strings) use the minify tool of your build system.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Related tools<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><a href=\"\/tools\/en\/json-formatter\/\">JSON Formatter &#038; Validator<\/a><\/li>\n\n\n<li><a href=\"\/tools\/en\/html-entity-encode-decode\/\">HTML Entity Encoder \/ Decoder<\/a><\/li>\n<\/ul>\n\n\n<div id=\"netgu-1047684249\" 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>Minify CSS \u2013 remove comments and unnecessary whitespace, reduce file size. Runs entirely in the 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":[162],"tags":[],"class_list":["post-273","post","type-post","status-publish","format-standard","hentry","category-converter-en"],"brizy_media":[],"_links":{"self":[{"href":"https:\/\/netguide.io\/tools\/wp-json\/wp\/v2\/posts\/273","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=273"}],"version-history":[{"count":0,"href":"https:\/\/netguide.io\/tools\/wp-json\/wp\/v2\/posts\/273\/revisions"}],"wp:attachment":[{"href":"https:\/\/netguide.io\/tools\/wp-json\/wp\/v2\/media?parent=273"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/netguide.io\/tools\/wp-json\/wp\/v2\/categories?post=273"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/netguide.io\/tools\/wp-json\/wp\/v2\/tags?post=273"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}