{"id":65719,"date":"2026-10-14T10:20:00","date_gmt":"2026-10-14T04:50:00","guid":{"rendered":"https:\/\/www.quickonlinetips.com\/archives\/?page_id=65719"},"modified":"2026-10-14T14:31:52","modified_gmt":"2026-10-14T09:01:52","slug":"uuid-generator","status":"publish","type":"page","link":"https:\/\/www.quickonlinetips.com\/archives\/tools\/uuid-generator\/","title":{"rendered":"UUID Generator: Random v4 and v7 UUIDs \/ GUIDs"},"content":{"rendered":"<p>This <strong>UUID generator<\/strong> creates random, standards-compliant UUIDs (also called GUIDs) instantly. Generate one or up to 1,000 at a time, choose version 4 (random) or version 7 (sorted by time), and format them in upper case, without hyphens or with braces. You can also paste a UUID to check its version.<\/p>\n<style>.qt-tool{--qt-accent:var(--global-palette1,#2B6CB0);--qt-accent2:var(--global-palette2,#215387);--qt-ink:var(--global-palette3,#1A202C);--qt-muted:var(--global-palette5,#4A5568);--qt-line:var(--global-palette7,#EDF2F7);--qt-soft:var(--global-palette8,#F7FAFC);--qt-bg:var(--global-palette9,#ffffff);background:#DCE7F3;border:1px solid #AEC3DB;border-radius:12px;padding:20px;margin:0 0 1.75em;color:var(--qt-ink);box-shadow:0 1px 2px rgba(26,32,44,.06)} .qt-tool *{box-sizing:border-box} .qt-tool .qt-label{display:block;font-weight:600;margin:0 0 6px} .qt-tool textarea,.qt-tool input[type=number],.qt-tool input[type=text],.qt-tool input[type=date],.qt-tool input[type=time],.qt-tool input[type=datetime-local],.qt-tool select{width:100%;font:inherit;font-size:16px;line-height:1.5;color:var(--qt-ink);background:var(--qt-bg);border:1px solid #CBD5E0;border-radius:8px;padding:10px 12px;margin:0} .qt-tool textarea{min-height:200px;resize:vertical;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:15px} .qt-tool textarea.qt-prose{font-family:inherit;font-size:16px} .qt-tool textarea:focus,.qt-tool input:focus,.qt-tool select:focus{outline:2px solid var(--qt-accent);outline-offset:1px;border-color:var(--qt-accent)} .qt-tool .qt-row{display:flex;flex-wrap:wrap;gap:8px;align-items:center;margin:12px 0 0} .qt-tool .qt-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(130px,1fr));gap:10px;margin:12px 0 0} .qt-tool .qt-field label{display:block;font-size:14px;font-weight:600;margin:0 0 4px;color:var(--qt-muted)} .qt-tool .qt-btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;font:inherit;font-size:15px;font-weight:600;line-height:1.2;padding:10px 16px;border-radius:8px;border:1px solid var(--qt-accent);background:var(--qt-accent);color:#fff;cursor:pointer;text-decoration:none;min-height:42px} .qt-tool .qt-btn:hover{background:var(--qt-accent2);border-color:var(--qt-accent2);color:#fff} .qt-tool .qt-btn-ghost{background:var(--qt-bg);color:var(--qt-accent)} .qt-tool .qt-btn-ghost:hover{background:var(--qt-line);color:var(--qt-accent2)} .qt-tool .qt-btn-sm{font-size:14px;padding:6px 10px;min-height:34px} .qt-tool .qt-btn-big{font-size:17px;padding:12px 22px} .qt-tool .qt-check{display:flex;align-items:center;gap:8px;font-size:15px;margin:0;cursor:pointer} .qt-tool .qt-check input{width:18px;height:18px;margin:0;accent-color:var(--qt-accent)} .qt-tool .qt-stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(118px,1fr));gap:8px;margin:12px 0 0} .qt-tool .qt-stat{background:var(--qt-bg);border:1px solid var(--qt-line);border-radius:8px;padding:10px;text-align:center} .qt-tool .qt-num{display:block;font-size:24px;font-weight:700;line-height:1.2;color:var(--qt-accent2);font-variant-numeric:tabular-nums} .qt-tool .qt-lab{display:block;font-size:13px;color:var(--qt-muted);margin-top:2px} .qt-tool .qt-sub{font-weight:700;margin:16px 0 6px} .qt-tool .qt-note{font-size:13px;color:var(--qt-muted);margin:14px 0 0} .qt-tool .qt-status{min-height:1.4em;font-size:14px;color:var(--qt-accent2);margin:8px 0 0} .qt-tool .qt-error{color:#C53030} .qt-tool .qt-kw{margin:0;padding:0 0 0 1.4em;columns:2;column-gap:24px;font-size:15px} .qt-tool .qt-kw li{margin:0 0 4px;break-inside:avoid} .qt-tool .qt-kw span{color:var(--qt-muted)} .qt-tool .qt-result{background:var(--qt-bg);border:1px solid var(--qt-line);border-radius:10px;padding:18px;margin:12px 0 0;text-align:center;font-size:44px;font-weight:700;line-height:1.25;color:var(--qt-accent2);word-break:break-word;font-variant-numeric:tabular-nums;min-height:94px} .qt-tool .qt-result.qt-many{font-size:22px;text-align:left;line-height:1.6;white-space:pre-wrap} .qt-tool .qt-history{margin:0;padding:0;list-style:none;font-size:14px;color:var(--qt-muted)} .qt-tool .qt-history li{padding:4px 0;border-bottom:1px dashed var(--qt-line);word-break:break-word} .qt-tool .qt-presets{display:flex;flex-wrap:wrap;gap:6px;margin:12px 0 0} .qt-tool .qt-dice{display:flex;flex-wrap:wrap;justify-content:center;gap:10px;margin:14px 0 0;min-height:76px} .qt-tool .qt-die{width:68px;height:68px;border-radius:14px;background:var(--qt-bg);border:2px solid var(--qt-accent);display:flex;align-items:center;justify-content:center;font-size:28px;font-weight:700;color:var(--qt-ink);box-shadow:0 2px 0 var(--qt-accent2)} .qt-tool .qt-die.qt-pip{font-size:56px;font-weight:400;line-height:1} .qt-tool .qt-die-label{display:block;font-size:11px;font-weight:600;color:var(--qt-muted)} .qt-tool .qt-total{text-align:center;font-size:20px;margin:12px 0 0} .qt-tool .qt-total strong{font-size:32px;color:var(--qt-accent2)} .qt-tool .qt-roll{animation:qtroll .45s ease-out} @keyframes qtroll{0%{transform:rotate(-25deg) scale(.8)}60%{transform:rotate(12deg) scale(1.08)}100%{transform:rotate(0) scale(1)}} .qt-tool .qt-out{background:var(--qt-bg)} .qt-tool p:empty{display:none} .qt-tool p:not(.qt-note){margin:0} .qt-tool .qt-grid:has(.qt-check){grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:8px 16px} .qt-tool .qt-swatches{display:grid;grid-template-columns:repeat(6,1fr);gap:6px;margin:8px 0 18px} .qt-tool .qt-sw{font:inherit;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:13px;font-weight:600;border:1px solid rgba(0,0,0,.12);border-radius:8px;min-height:64px;padding:6px 4px;cursor:pointer;display:flex;align-items:flex-end;justify-content:center;text-transform:uppercase;transition:transform .1s} .qt-tool .qt-sw:hover,.qt-tool .qt-sw:focus{transform:scale(1.06);outline:2px solid var(--qt-accent);outline-offset:1px} .qt-tool .qt-group{font-size:15px;font-weight:700;margin:14px 0 2px} .qt-tool .qt-seg{display:inline-flex;border:1px solid var(--qt-accent);border-radius:8px;overflow:hidden} .qt-tool .qt-seg button{font:inherit;font-size:14px;font-weight:600;padding:8px 14px;border:0;background:var(--qt-bg);color:var(--qt-accent);cursor:pointer} .qt-tool .qt-seg button[aria-pressed=true]{background:var(--qt-accent);color:#fff} .qt-cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:14px;margin:0 0 1.75em} .qt-card{display:block;background:var(--global-palette8,#F7FAFC);border:1px solid #D5E0EC;border-radius:12px;padding:16px 18px;text-decoration:none;color:var(--global-palette3,#1A202C);transition:transform .12s,box-shadow .12s} .qt-card:hover{transform:translateY(-2px);box-shadow:0 4px 14px rgba(26,32,44,.10);color:var(--global-palette3,#1A202C)} .qt-card strong{display:block;font-size:18px;color:var(--global-palette1,#2B6CB0);margin:0 0 4px} .qt-card span{display:block;font-size:15px;color:var(--global-palette5,#4A5568);line-height:1.5} @media (max-width:600px){.qt-tool{padding:14px}.qt-tool .qt-swatches{grid-template-columns:repeat(3,1fr)}.qt-tool .qt-kw{columns:1}.qt-tool .qt-result{font-size:36px}.qt-tool .qt-die{width:58px;height:58px;font-size:24px}.qt-tool .qt-die.qt-pip{font-size:48px}} .qt-tool .qt-two{display:grid;grid-template-columns:1fr 1fr;gap:12px} .qt-tool .qt-two textarea{min-height:180px} .qt-tool .qt-diff{background:var(--qt-bg);border:1px solid var(--qt-line);border-radius:8px;margin:12px 0 0;max-height:560px;overflow:auto;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:13.5px;line-height:1.55} .qt-tool .qt-dl{display:grid;grid-template-columns:3.2em 3.2em 1.4em 1fr;min-width:0} .qt-tool .qt-ln{color:#A0AEC0;text-align:right;padding:0 6px;user-select:none;border-right:1px solid var(--qt-line)} .qt-tool .qt-sign{text-align:center;color:var(--qt-muted);user-select:none} .qt-tool .qt-code{white-space:pre-wrap;word-break:break-word;padding:0 8px 0 2px} .qt-tool .qt-add{background:#F0FFF4} .qt-tool .qt-add .qt-sign{color:#2F855A;font-weight:700} .qt-tool .qt-del{background:#FFF5F5} .qt-tool .qt-del .qt-sign{color:#C53030;font-weight:700} .qt-tool .qt-wadd{background:#9AE6B4;color:inherit;border-radius:2px;padding:0} .qt-tool .qt-wdel{background:#FEB2B2;color:inherit;border-radius:2px;padding:0;text-decoration:line-through} .qt-tool .qt-mono{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:14px;word-break:break-all;background:var(--qt-bg);border:1px solid var(--qt-line);border-radius:8px;padding:8px 10px;margin:4px 0 0;min-height:2.4em;color:var(--qt-ink)} .qt-tool .qt-big{font-size:18px;letter-spacing:.04em} .qt-tool .qt-explain{font-size:14px;color:var(--qt-muted);text-align:center;margin:6px 0 0;min-height:1.2em} .qt-tool .qt-result.qt-roman{font-size:32px} .qt-tool .qt-dateout{font-size:24px;font-weight:700;color:var(--qt-accent2);letter-spacing:.03em} .qt-ref{width:100%;border-collapse:collapse;font-size:15px;margin:0 0 1.5em} .qt-ref th,.qt-ref td{border:1px solid #E2E8F0;padding:6px 10px;text-align:left} .qt-ref th{background:#F7FAFC} @media (max-width:600px){.qt-tool .qt-two{grid-template-columns:1fr}.qt-tool .qt-dl{grid-template-columns:2.6em 2.6em 1.2em 1fr}} .qt-tool .qt-coinwrap{display:flex;justify-content:center;margin:8px 0 0;perspective:900px} .qt-tool .qt-coin{position:relative;width:150px;height:150px;cursor:pointer;transform-style:preserve-3d;border-radius:50%} .qt-tool .qt-coin:focus{outline:3px solid var(--qt-accent);outline-offset:4px} .qt-tool .qt-face{position:absolute;inset:0;border-radius:50%;display:flex;flex-direction:column;align-items:center;justify-content:center;backface-visibility:hidden;-webkit-backface-visibility:hidden;background:radial-gradient(circle at 35% 30%,#FFF3B0,#F6C343 45%,#C9931E 100%);border:6px solid #B7791F;box-shadow:inset 0 0 0 4px rgba(255,255,255,.35),0 6px 14px rgba(0,0,0,.18);color:#744210;font-weight:800} .qt-tool .qt-face b{font-size:56px;line-height:1} .qt-tool .qt-face small{font-size:13px;letter-spacing:.12em;margin-top:2px} .qt-tool .qt-face-t{transform:rotateY(180deg);background:radial-gradient(circle at 35% 30%,#F7FAFC,#CBD5E0 45%,#8A99AD 100%);border-color:#718096;color:#2D3748} .qt-tool .qt-coin.qt-show-t{transform:rotateY(180deg)} .qt-tool .qt-coin.qt-flip-h{animation:qtfliph 1s cubic-bezier(.2,.7,.3,1) forwards} .qt-tool .qt-coin.qt-flip-t{animation:qtflipt 1s cubic-bezier(.2,.7,.3,1) forwards} @keyframes qtfliph{0%{transform:translateY(0) rotateY(0)}45%{transform:translateY(-40px) rotateY(900deg)}100%{transform:translateY(0) rotateY(1800deg)}} @keyframes qtflipt{0%{transform:translateY(0) rotateY(0)}45%{transform:translateY(-40px) rotateY(990deg)}100%{transform:translateY(0) rotateY(1980deg)}} .qt-tool .qt-small{font-size:15px;font-weight:400;color:var(--qt-muted);text-align:center;margin:6px 0 0;word-break:break-word} .qt-tool .qt-wheelbox{display:grid;grid-template-columns:minmax(0,1.25fr) minmax(0,1fr);gap:16px;align-items:start} .qt-tool .qt-wheel{position:relative;width:100%;max-width:440px;margin:0 auto} .qt-tool .qt-wheel canvas{display:block;width:100%;height:auto;aspect-ratio:1\/1;cursor:pointer;border-radius:50%} .qt-tool .qt-wheel canvas:focus{outline:3px solid var(--qt-accent);outline-offset:3px} .qt-tool .qt-pointer{position:absolute;top:-6px;left:50%;transform:translateX(-50%);width:0;height:0;border-left:16px solid transparent;border-right:16px solid transparent;border-top:30px solid #1A202C;filter:drop-shadow(0 2px 1px rgba(0,0,0,.3));z-index:2} .qt-tool .qt-wheelbox textarea{min-height:240px} .qt-tool .qt-result.qt-pop{animation:qtpop .4s ease-out} @keyframes qtpop{0%{transform:scale(.8)}60%{transform:scale(1.06)}100%{transform:scale(1)}} .qt-tool .qt-btn[disabled]{opacity:.6;cursor:wait} .qt-tool .qt-lamp{width:46px;height:46px;border-radius:50%;background:#CBD5E0;border:3px solid #A0AEC0;flex:0 0 auto} .qt-tool .qt-lamp.qt-on{background:#F6E05E;border-color:#D69E2E;box-shadow:0 0 18px 6px rgba(246,224,94,.8)} .qt-tool .qt-result.qt-letters{font-size:72px} .qt-tool .qt-clock{font-size:56px;font-weight:700;text-align:center;font-variant-numeric:tabular-nums;color:var(--qt-ink);background:var(--qt-bg);border:1px solid var(--qt-line);border-radius:10px;padding:14px;margin:12px 0 0;letter-spacing:.02em} .qt-tool .qt-clock.qt-done{color:#C53030;animation:qtpop .4s ease-out} .qt-tool .qt-tabs{display:flex;flex-wrap:wrap;gap:6px;margin:0 0 12px} .qt-tool .qt-tabs button{font:inherit;font-size:15px;font-weight:600;padding:8px 14px;border-radius:8px;border:1px solid var(--qt-accent);background:var(--qt-bg);color:var(--qt-accent);cursor:pointer} .qt-tool .qt-tabs button[aria-selected=true]{background:var(--qt-accent);color:#fff} .qt-tool .qt-sent{font-size:17px;line-height:2.4} .qt-tool .qt-sent input{display:inline-block;width:7em;padding:6px 8px;margin:0 4px} .qt-tool .qt-ans{font-weight:700;color:var(--qt-accent2);font-size:20px;margin-left:6px} .qt-tool .qt-table{width:100%;border-collapse:collapse;font-size:14px;margin:12px 0 0;background:var(--qt-bg)} .qt-tool .qt-table th,.qt-tool .qt-table td{border:1px solid #D5E0EC;padding:6px 8px;text-align:left;word-break:break-all;vertical-align:top} .qt-tool .qt-table th{background:#F1F5FA;font-weight:700;word-break:normal} .qt-tool .qt-ok{color:#2F855A;font-weight:700} .qt-tool .qt-ip{font-size:38px;font-weight:700;text-align:center;color:var(--qt-accent2);word-break:break-all;background:var(--qt-bg);border:1px solid var(--qt-line);border-radius:10px;padding:16px;margin:0} @media (prefers-reduced-motion:reduce){.qt-tool .qt-coin.qt-flip-h,.qt-tool .qt-coin.qt-flip-t{animation:none}.qt-tool .qt-coin.qt-flip-t{transform:rotateY(180deg)}} @media (max-width:700px){.qt-tool .qt-wheelbox{grid-template-columns:1fr}} @media (max-width:600px){.qt-tool .qt-clock{font-size:40px}.qt-tool .qt-ip{font-size:26px}} .qt-tool .qt-srow{display:flex;gap:10px;align-items:center;background:var(--qt-bg);border:1px solid var(--qt-line);border-radius:8px;padding:8px 10px;margin:8px 0 0} .qt-tool .qt-sname{font-size:12px;color:var(--qt-muted);flex:0 0 120px} .qt-tool .qt-sval{flex:1 1 auto;font-size:20px;line-height:1.4;word-break:break-word;min-width:0} @media (max-width:600px){.qt-tool .qt-srow{flex-wrap:wrap}.qt-tool .qt-sname{flex-basis:100%}} .qt-tool .qt-meter{height:22px;background:#CBD5E0;border-radius:11px;overflow:hidden;margin:12px 0 0} .qt-tool .qt-meter span{display:block;height:100%;width:0;background:linear-gradient(90deg,#38A169 0,#38A169 60%,#D69E2E 80%,#C53030 100%);transition:width .06s linear} .qt-tool video,.qt-tool canvas.qt-snap{display:block;width:100%;max-height:420px;background:#1A202C;border-radius:10px;margin:12px 0 0;object-fit:contain} .qt-tool video.qt-mirror{transform:scaleX(-1)} .qt-tool .qt-kb{display:flex;flex-direction:column;gap:4px;margin:12px 0 0;padding:10px;background:#2D3748;border-radius:10px;outline:none;overflow-x:auto} .qt-tool .qt-kb:focus{box-shadow:0 0 0 3px var(--qt-accent)} .qt-tool .qt-krow{display:flex;gap:4px;min-width:640px} .qt-tool .qt-key{flex:1 1 0;height:36px;border-radius:5px;background:#4A5568;color:#E2E8F0;font-size:11px;font-weight:600;display:flex;align-items:center;justify-content:center;user-select:none;white-space:nowrap;overflow:hidden} .qt-tool .qt-key.qt-kok{background:#2F855A;color:#fff} .qt-tool .qt-key.qt-kon{background:#F6E05E;color:#1A202C} .qt-tool .qt-click{display:flex;align-items:center;justify-content:center;min-height:240px;margin:12px 0 0;border-radius:12px;background:var(--qt-accent);color:#fff;font-size:26px;font-weight:700;text-align:center;cursor:pointer;user-select:none;-webkit-user-select:none;touch-action:manipulation;padding:16px} .qt-tool .qt-click.qt-wait{background:#C53030} .qt-tool .qt-click.qt-go{background:#2F855A} .qt-tool .qt-click.qt-off{background:#718096;cursor:default} .qt-full{position:fixed;inset:0;z-index:999999;cursor:none} .qt-full-tip{position:fixed;left:50%;bottom:24px;transform:translateX(-50%);z-index:1000000;background:rgba(0,0,0,.7);color:#fff;font:14px\/1.4 sans-serif;padding:8px 14px;border-radius:8px} .qt-tool .qt-gparow{grid-template-columns:minmax(0,2fr) minmax(0,1fr) minmax(0,1fr) minmax(0,1.2fr) auto;align-items:end} @media (max-width:600px){.qt-tool .qt-gparow{grid-template-columns:1fr 1fr;padding-bottom:10px;border-bottom:1px dashed var(--qt-line)}} .qt-tool .qt-hrrow{grid-template-columns:repeat(4,minmax(0,1fr));margin-top:6px} @media (max-width:600px){.qt-tool .qt-hrrow{grid-template-columns:repeat(2,minmax(0,1fr))}} .qt-tool .qt-tally{background:var(--qt-bg);border:1px solid var(--qt-line);border-radius:10px;padding:12px;text-align:center} .qt-tool .qt-tally input{text-align:center;font-weight:600;border-color:transparent;background:transparent} .qt-tool .qt-tally .qt-tnum{font-size:56px;font-weight:700;line-height:1.1;color:var(--qt-accent2);font-variant-numeric:tabular-nums;cursor:pointer;user-select:none} .qt-tool .qt-tallies{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:10px;margin:12px 0 0} .qt-tool .qt-teams{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:10px;margin:12px 0 0} .qt-tool .qt-team{background:var(--qt-bg);border:1px solid var(--qt-line);border-top:4px solid var(--qt-accent);border-radius:10px;padding:10px 12px} .qt-tool .qt-team h3{font-size:16px;margin:0 0 6px} .qt-tool .qt-team ol{margin:0;padding-left:1.3em;font-size:15px} .qt-tool .qt-words{font-size:22px;line-height:1.75;height:5.6em;overflow:hidden;background:var(--qt-bg);border:1px solid var(--qt-line);border-radius:10px;padding:8px 14px;margin:12px 0 0;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace} .qt-tool .qt-words span{padding:1px 3px;border-radius:4px} .qt-tool .qt-words .qt-cur{background:#FEFCBF} .qt-tool .qt-words .qt-wok{color:#2F855A} .qt-tool .qt-words .qt-wbad{color:#C53030;text-decoration:underline} .qt-tool .qt-words .qt-cur.qt-wtyping{background:#FED7D7} .qt-tool .qt-wlist{display:flex;flex-wrap:wrap;gap:6px;margin:6px 0 12px} .qt-tool .qt-wlist span{background:var(--qt-bg);border:1px solid var(--qt-line);border-radius:6px;padding:3px 8px;font-size:15px;font-weight:600} .qt-tool .qt-wlist sub{font-size:10px;color:var(--qt-muted);margin-left:2px} .qt-tool h3.qt-wh{font-size:17px;margin:14px 0 2px} .qt-tool input[type=range]{width:100%;accent-color:var(--qt-accent)} .qt-tool .qt-pw{display:flex;gap:8px;align-items:center;background:var(--qt-bg);border:1px solid var(--qt-line);border-radius:8px;padding:8px 10px;margin:8px 0 0} .qt-tool .qt-pw code{flex:1 1 auto;font-size:17px;word-break:break-all;background:none;padding:0;min-width:0} .qt-tool .qt-strength{height:10px;border-radius:5px;background:#CBD5E0;overflow:hidden;margin:10px 0 0} .qt-tool .qt-strength span{display:block;height:100%;width:0;transition:width .2s} .qt-tool input[type=color]{width:100%;height:48px;padding:2px;border:1px solid #CBD5E0;border-radius:8px;background:var(--qt-bg);cursor:pointer} .qt-tool .qt-swatch{height:110px;border-radius:10px;border:1px solid rgba(0,0,0,.15);margin:12px 0 0;display:flex;align-items:center;justify-content:center;gap:24px;font-size:20px;font-weight:700} .qt-tool .qt-over{color:#C53030;font-weight:700} .qt-tool .qt-drop{border:2px dashed var(--qt-accent);border-radius:10px;padding:28px 12px;text-align:center;cursor:pointer;background:var(--qt-bg);margin:0 0 12px} .qt-tool .qt-drop.qt-hover{background:#E3EEFF} .qt-tool .qt-prev{display:block;max-width:100%;max-height:380px;margin:12px auto 0;border:1px solid var(--qt-line);border-radius:8px;background:repeating-conic-gradient(#E2E8F0 0 25%,#fff 0 50%) 0 0\/16px 16px} .qt-tool .qt-lb{display:inline-flex;width:44px;height:44px;border-radius:50%;align-items:center;justify-content:center;font-weight:700;font-size:17px;background:#fff;color:#1A202C;border:2px solid var(--qt-accent);margin:3px} .qt-tool .qt-lb.qt-bonus{background:#E53E3E;color:#fff;border-color:#E53E3E} .qt-tool .qt-8{width:230px;height:230px;border-radius:50%;margin:16px auto;background:radial-gradient(circle at 35% 30%,#666,#000 62%);display:flex;align-items:center;justify-content:center;cursor:pointer;box-shadow:0 10px 24px rgba(0,0,0,.35)} .qt-tool .qt-8 span{width:116px;height:116px;border-radius:50%;background:radial-gradient(circle,#2747a8,#0b1a4a);color:#fff;display:flex;align-items:center;justify-content:center;text-align:center;font-size:13px;font-weight:700;padding:16px;box-sizing:border-box;line-height:1.25;transition:opacity .3s} .qt-tool .qt-shake{animation:qt-shake .7s} @keyframes qt-shake{0%,100%{transform:translate(0)}20%{transform:translate(-12px,4px) rotate(-6deg)}40%{transform:translate(10px,-6px) rotate(5deg)}60%{transform:translate(-8px,6px) rotate(-4deg)}80%{transform:translate(6px,-3px) rotate(3deg)}} .qt-tool .qt-grid>.qt-field{display:flex;flex-direction:column;justify-content:flex-end} .qt-tool .qt-field input[type=range]{height:46px;padding:0 10px} .qt-tool .qt-field input[type=color]{height:46px} .qt-tool .qt-drop .qt-sub{font-weight:400;font-size:14px;margin:4px 0 0} .qt-tool .qt-board{display:grid;gap:5px;margin:14px auto 0;max-width:100%;user-select:none;-webkit-user-select:none;touch-action:manipulation} .qt-tool .qt-cell{display:flex;align-items:center;justify-content:center;background:#fff;border:1px solid #AEC3DB;border-radius:6px;font-weight:700;cursor:pointer;aspect-ratio:1;font-size:clamp(14px,4vw,26px);color:#1A202C;padding:0;min-width:0;font-family:inherit;line-height:1} .qt-tool .qt-cell:disabled{cursor:default} .qt-tool .qt-win{background:#C6F6D5;border-color:#38A169} .qt-tool .qt-sel{background:#BEE3F8;border-color:#3182CE} .qt-tool .qt-bad{background:#FED7D7;border-color:#E53E3E} .qt-tool select{-webkit-appearance:none;-moz-appearance:none;appearance:none;padding-right:40px;cursor:pointer;border:2px solid #90B4DA;font-weight:600;background-color:#fff;background-image:url(\"data:image\/svg+xml,%3Csvg xmlns='http:\/\/www.w3.org\/2000\/svg' viewBox='0 0 14 9'%3E%3Cpath d='M1.5 1.5l5.5 5.5 5.5-5.5' fill='none' stroke='%232B6CB0' stroke-width='2.4' stroke-linecap='round' stroke-linejoin='round'\/%3E%3C\/svg%3E\");background-repeat:no-repeat;background-position:right 14px center;background-size:14px 9px} .qt-tool select:hover{border-color:var(--qt-accent);background-color:#F4F8FD} .qt-tool select::-ms-expand{display:none} .qt-next{margin:0 0 1.75em} .qt-next .qt-next-h{font-size:14px;font-weight:700;letter-spacing:.05em;text-transform:uppercase;color:#4A5568;margin:0 0 8px} .qt-next-g{display:grid;grid-template-columns:repeat(3,1fr);gap:8px} .qt-next-g a{display:flex;align-items:center;min-height:46px;padding:9px 12px;border:1px solid #AEC3DB;border-radius:8px;background:#F4F8FD;color:#215387;font-weight:600;font-size:15px;line-height:1.3;text-decoration:none} .qt-next-g a:hover,.qt-next-g a:focus{background:#E3EEFF;border-color:#2B6CB0;text-decoration:none} @media (max-width:600px){.qt-next-g{grid-template-columns:repeat(2,1fr)}}<\/style>\n<div class=\"qt-tool\" id=\"qt-uu\">\n<div class=\"qt-grid\">\n<div class=\"qt-field\"><label for=\"qt-uu-n\">How many<\/label><input type=\"number\" id=\"qt-uu-n\" min=\"1\" max=\"1000\" value=\"5\"><\/div>\n<div class=\"qt-field\"><label for=\"qt-uu-v\">Version<\/label><select id=\"qt-uu-v\"><option value=\"4\" selected>v4 (random)<\/option><option value=\"7\">v7 (time-ordered)<\/option><\/select><\/div>\n<div class=\"qt-field\"><label for=\"qt-uu-case\">Case<\/label><select id=\"qt-uu-case\"><option value=\"lower\" selected>lowercase<\/option><option value=\"upper\">UPPERCASE<\/option><\/select><\/div>\n<div class=\"qt-field\"><label for=\"qt-uu-fmt\">Format<\/label><select id=\"qt-uu-fmt\"><option value=\"std\" selected>Standard (with hyphens)<\/option><option value=\"nohyph\">No hyphens<\/option><option value=\"braces\">{With braces}<\/option><option value=\"urn\">urn:uuid: prefix<\/option><\/select><\/div>\n<\/div>\n<div class=\"qt-row\"><button type=\"button\" class=\"qt-btn qt-btn-big\" id=\"qt-uu-go\">Generate<\/button><button type=\"button\" class=\"qt-btn qt-btn-ghost\" id=\"qt-uu-copy\">Copy all<\/button><\/div>\n<p><textarea id=\"qt-uu-out\" class=\"qt-out\" rows=\"7\" readonly spellcheck=\"false\" style=\"margin-top:12px\" aria-label=\"Generated UUIDs\"><\/textarea><\/p>\n<p class=\"qt-sub\">Check a UUID<\/p>\n<p><input type=\"text\" id=\"qt-uu-check\" placeholder=\"Paste a UUID, e.g. 550e8400-e29b-41d4-a716-446655440000\" spellcheck=\"false\"><\/p>\n<div class=\"qt-explain\" id=\"qt-uu-info\" style=\"text-align:left\"><\/div>\n<div class=\"qt-status\" id=\"qt-uu-status\" aria-live=\"polite\"><\/div>\n<p class=\"qt-note\">Everything runs in your browser. Nothing you enter is sent to or stored on our server.<\/p>\n<\/div>\n<p><script>(function () { function qtReady(fn) { if (document.readyState === 'loading') { document.addEventListener('DOMContentLoaded', fn); } else { fn(); } } function qtCopy(text, statusEl, okMsg) { function done(ok) { if (statusEl) { statusEl.textContent = ok ? (okMsg || 'Copied to clipboard.') : 'Press Ctrl+C (or Cmd+C) to copy.'; } } function fallback() { var ta = document.createElement('textarea'); ta.value = text; ta.setAttribute('readonly', ''); ta.style.position = 'fixed'; ta.style.top = '-1000px'; document.body.appendChild(ta); ta.select(); var ok = false; try { ok = document.execCommand('copy'); } catch (e) { ok = false; } document.body.removeChild(ta); done(ok); } if (navigator.clipboard) { if (window.isSecureContext) { navigator.clipboard.writeText(text).then(function () { done(true); }, fallback); return; } } fallback(); } function qtRand32() { var c = window.crypto || window.msCrypto; if (c) { if (c.getRandomValues) { var a = new Uint32Array(1); c.getRandomValues(a); return a[0]; } } return Math.floor(Math.random() * 4294967296); } function qtRandInt(range) { if (range === 4294967296) { return qtRand32(); } var limit = Math.floor(4294967296 \/ range) * range; var x = qtRand32(); while (x >= limit) { x = qtRand32(); } return x % range; } qtReady(function () { var go = document.getElementById('qt-uu-go'); if (!go) { return; } function $(id) { return document.getElementById(id); } function bytes() { var b = new Uint8Array(16); var c = window.crypto || window.msCrypto; if (c) { c.getRandomValues(b); } else { for (var i = 0; 16 > i; i++) { b[i] = Math.floor(Math.random() * 256); } } return b; } function hex(b) { var s = ''; for (var i = 0; 16 > i; i++) { s += (b[i] + 256).toString(16).slice(1); } return s.slice(0, 8) + '-' + s.slice(8, 12) + '-' + s.slice(12, 16) + '-' + s.slice(16, 20) + '-' + s.slice(20); } var lastMs = 0, seq = 0; function make(v) { var b = bytes(); if (v === '7') { var ms = Date.now(); if (ms === lastMs) { seq++; } else { lastMs = ms; seq = 0; } for (var i = 5; i >= 0; i--) { b[i] = ms % 256; ms = Math.floor(ms \/ 256); } b[6] = 0x70 | ((seq >> 8) % 16); b[7] = seq % 256; } else { b[6] = 0x40 | (b[6] % 16); } b[8] = 0x80 | (b[8] % 64); return hex(b); } function fmt(u) { if ($('qt-uu-case').value === 'upper') { u = u.toUpperCase(); } var f = $('qt-uu-fmt').value; if (f === 'nohyph') { u = u.replace(\/-\/g, ''); } if (f === 'braces') { u = '{' + u + '}'; } if (f === 'urn') { u = 'urn:uuid:' + u; } return u; } function gen() { var n = parseInt($('qt-uu-n').value, 10); if (isNaN(n) || 1 > n) { n = 1; } if (n > 1000) { n = 1000; } $('qt-uu-n').value = n; var v = $('qt-uu-v').value, out = []; for (var i = 0; n > i; i++) { out.push(fmt(make(v))); } $('qt-uu-out').value = out.join('\\n'); $('qt-uu-status').textContent = n + ' UUID' + (n === 1 ? '' : 's') + ' generated.'; } function check() { var s = $('qt-uu-check').value.trim().toLowerCase().replace(\/^urn:uuid:\/, '').replace(\/[{}]\/g, ''); var info = $('qt-uu-info'); if (!s) { info.textContent = ''; return; } var h = s.replace(\/-\/g, ''); if (!\/^[0-9a-f]{32}$\/.test(h)) { info.textContent = 'Not a valid UUID: it needs 32 hexadecimal digits (0-9, a-f).'; info.className = 'qt-explain qt-error'; return; } info.className = 'qt-explain'; if (\/^0+$\/.test(h)) { info.textContent = 'This is the nil UUID (all zeros).'; return; } var ver = parseInt(h.charAt(12), 16), vari = parseInt(h.charAt(16), 16); var vname = vari >= 8 ? (vari >= 12 ? (vari >= 14 ? 'reserved' : 'Microsoft') : 'RFC 9562 (standard)') : 'NCS (old)'; var msg = 'Valid UUID. Version ' + ver + ', variant ' + vname + '.'; if (ver === 7) { var ms = parseInt(h.slice(0, 12), 16); msg += ' Created ' + new Date(ms).toISOString().replace('T', ' ').slice(0, 19) + ' UTC.'; } if (ver === 1) { msg += ' Version 1 contains a timestamp and often the MAC address of the machine that made it.'; } info.textContent = msg; } go.addEventListener('click', gen); ['qt-uu-v', 'qt-uu-case', 'qt-uu-fmt'].forEach(function (id) { $(id).addEventListener('change', gen); }); $('qt-uu-copy').addEventListener('click', function () { qtCopy($('qt-uu-out').value, $('qt-uu-status'), 'UUIDs copied.'); }); $('qt-uu-check').addEventListener('input', check); gen(); }); })();<\/script><\/p>\n<div class=\"qt-next\">\n<p class=\"qt-next-h\">Try another free tool<\/p>\n<div class=\"qt-next-g\"><a href=\"https:\/\/www.quickonlinetips.com\/archives\/tools\/base64-encode-decode\/\">Base64 Encode and Decode<\/a><a href=\"https:\/\/www.quickonlinetips.com\/archives\/tools\/unix-timestamp-converter\/\">Unix Timestamp Converter<\/a><a href=\"https:\/\/www.quickonlinetips.com\/archives\/tools\/json-formatter\/\">JSON Formatter<\/a><a href=\"https:\/\/www.quickonlinetips.com\/archives\/tools\/url-encode-decode\/\">URL Encode and Decode<\/a><a href=\"https:\/\/www.quickonlinetips.com\/archives\/tools\/password-generator\/\">Password Generator<\/a><a href=\"https:\/\/www.quickonlinetips.com\/archives\/tools\/html-entities\/\">HTML Encode and Decode<\/a><\/div>\n<\/div>\n<p><strong>Quick answer:<\/strong> Five fresh version 4 UUIDs appear as soon as the page loads. Click <strong>Generate<\/strong> for new ones, change <strong>How many<\/strong> for bulk output, and click <strong>Copy all<\/strong>.<\/p>\n<h2>What is a UUID?<\/h2>\n<p>A UUID (universally unique identifier) is a 128-bit number written as 32 hexadecimal digits in five groups, like <code>f47ac10b-58cc-4372-a567-0e02b2c3d479<\/code>. Microsoft calls the same thing a GUID (globally unique identifier). Developers use UUIDs as database keys, file names, order numbers and request IDs, because they can be created anywhere, without a central server, with practically no chance of two being the same. The current standard is RFC 9562 (2024), which replaced RFC 4122.<\/p>\n<h2>UUID v4 vs v7: which should I use?<\/h2>\n<ul>\n<li><strong>Version 4<\/strong> is 122 random bits. It is the most common choice and reveals nothing about when or where it was made.<\/li>\n<li><strong>Version 7<\/strong> starts with the current time in milliseconds, followed by random bits. New v7 UUIDs sort in creation order, which keeps database indexes compact and fast. Many teams now prefer v7 for primary keys.<\/li>\n<li><strong>Version 1<\/strong> (older) uses a timestamp and the computer&#8217;s network address. Avoid it for anything public.<\/li>\n<\/ul>\n<h2>How unique are UUIDs from this UUID generator?<\/h2>\n<p>A v4 UUID has 2<sup>122<\/sup> possible values, about 5.3 \u00d7 10<sup>36<\/sup>. You would need to generate around 2.7 quintillion of them before the chance of a single duplicate reached 50%. This generator uses your browser&#8217;s cryptographic random generator, the same quality used for encryption keys.<\/p>\n<h2>How to read a UUID<\/h2>\n<p>The first digit of the third group is the version (4 in <code>\u2026-4372-\u2026<\/code>). The first digit of the fourth group shows the variant; for standard UUIDs it is 8, 9, a or b. Paste any UUID into <strong>Check a UUID<\/strong> to see this, and for v7 UUIDs, the time it was created.<\/p>\n<h2>Generate a UUID in code<\/h2>\n<ul>\n<li><strong>JavaScript:<\/strong> <code>crypto.randomUUID()<\/code><\/li>\n<li><strong>Python:<\/strong> <code>import uuid; uuid.uuid4()<\/code> (and <code>uuid.uuid7()<\/code> in Python 3.14)<\/li>\n<li><strong>PostgreSQL:<\/strong> <code>gen_random_uuid()<\/code><\/li>\n<li><strong>Windows PowerShell:<\/strong> <code>New-Guid<\/code>; <strong>macOS and Linux:<\/strong> <code>uuidgen<\/code><\/li>\n<\/ul>\n<p>Need other developer tools? Try the <a href=\"https:\/\/www.quickonlinetips.com\/archives\/tools\/base64-encode-decode\/\">Base64 encoder<\/a>, or generate secure passwords with our <a href=\"https:\/\/www.quickonlinetips.com\/archives\/tools\/password-generator\/\">password generator<\/a>.<\/p>\n<h2>FAQ<\/h2>\n<h3>Is a UUID the same as a GUID?<\/h3>\n<p>Yes. GUID is Microsoft&#8217;s name for a UUID. Some Microsoft tools show them in upper case with braces, which you can pick in the Format option.<\/p>\n<h3>Can I use these UUIDs in production?<\/h3>\n<p>Yes. They follow the standard and use cryptographic randomness. They are generated in your browser and never stored.<\/p>\n<h3>Are UUIDs secret?<\/h3>\n<p>No. A UUID is an identifier, not a password. Don&#8217;t rely on it alone to protect private links.<\/p>\n<h2>More free tools<\/h2>\n<div class=\"qt-cards\"><a class=\"qt-card\" href=\"https:\/\/www.quickonlinetips.com\/archives\/tools\/base64-encode-decode\/\"><strong>Base64 Encode and Decode<\/strong><span>Encode text to Base64 and decode it back, UTF-8 safe.<\/span><\/a><a class=\"qt-card\" href=\"https:\/\/www.quickonlinetips.com\/archives\/tools\/unix-timestamp-converter\/\"><strong>Unix Timestamp Converter<\/strong><span>Convert epoch time to a date and a date to epoch.<\/span><\/a><a class=\"qt-card\" href=\"https:\/\/www.quickonlinetips.com\/archives\/tools\/json-formatter\/\"><strong>JSON Formatter<\/strong><span>Beautify, minify and validate JSON with error lines.<\/span><\/a><a class=\"qt-card\" href=\"https:\/\/www.quickonlinetips.com\/archives\/tools\/url-encode-decode\/\"><strong>URL Encode and Decode<\/strong><span>Percent-encode or decode URLs and see query parameters.<\/span><\/a><a class=\"qt-card\" href=\"https:\/\/www.quickonlinetips.com\/archives\/tools\/password-generator\/\"><strong>Password Generator<\/strong><span>Strong random passwords and passphrases with a strength meter.<\/span><\/a><a class=\"qt-card\" href=\"https:\/\/www.quickonlinetips.com\/archives\/tools\/html-entities\/\"><strong>HTML Encode and Decode<\/strong><span>Convert special characters to HTML entities and back.<\/span><\/a><a class=\"qt-card\" href=\"https:\/\/www.quickonlinetips.com\/archives\/tools\/hash-generator\/\"><strong>Hash Generator<\/strong><span>MD5, SHA-1 and SHA-256 hashes of any text.<\/span><\/a><a class=\"qt-card\" href=\"https:\/\/www.quickonlinetips.com\/archives\/tools\/regex-tester\/\"><strong>Regex Tester<\/strong><span>Test regular expressions with live highlighting.<\/span><\/a><a class=\"qt-card\" href=\"https:\/\/www.quickonlinetips.com\/archives\/tools\/css-minifier\/\"><strong>CSS Minifier<\/strong><span>Minify or beautify CSS and see the savings.<\/span><\/a><\/div>\n<p>See all of them on the <a href=\"https:\/\/www.quickonlinetips.com\/archives\/tools\/\">QuickOnlineTips free online tools<\/a> page and play our <a href=\"https:\/\/www.quickonlinetips.com\/archives\/games\/\">free online games<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>This UUID generator creates random, standards-compliant UUIDs (also called GUIDs) instantly. Generate one or up to 1,000 at a time, choose version 4 (random) or version 7 (sorted by time), and format them in upper case, without hyphens or with braces. You can also paste a UUID to check its version. How many Versionv4 (random)v7&#8230;<\/p>\n","protected":false},"author":4,"featured_media":0,"parent":65595,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_kad_post_transparent":"","_kad_post_title":"","_kad_post_layout":"","_kad_post_sidebar_id":"","_kad_post_content_style":"","_kad_post_vertical_padding":"","_kad_post_feature":"","_kad_post_feature_position":"","_kad_post_header":false,"_kad_post_footer":false,"_kad_post_classname":"","footnotes":""},"class_list":["post-65719","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.quickonlinetips.com\/archives\/wp-json\/wp\/v2\/pages\/65719","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.quickonlinetips.com\/archives\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.quickonlinetips.com\/archives\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.quickonlinetips.com\/archives\/wp-json\/wp\/v2\/users\/4"}],"replies":[{"embeddable":true,"href":"https:\/\/www.quickonlinetips.com\/archives\/wp-json\/wp\/v2\/comments?post=65719"}],"version-history":[{"count":3,"href":"https:\/\/www.quickonlinetips.com\/archives\/wp-json\/wp\/v2\/pages\/65719\/revisions"}],"predecessor-version":[{"id":66487,"href":"https:\/\/www.quickonlinetips.com\/archives\/wp-json\/wp\/v2\/pages\/65719\/revisions\/66487"}],"up":[{"embeddable":true,"href":"https:\/\/www.quickonlinetips.com\/archives\/wp-json\/wp\/v2\/pages\/65595"}],"wp:attachment":[{"href":"https:\/\/www.quickonlinetips.com\/archives\/wp-json\/wp\/v2\/media?parent=65719"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}