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Run results for:
uuid lib v4 vs math random vs crypto getRandomValues vs crypto randomUUID
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Embed Benchmark Result
<iframe src="https://measurethat.net/Embed?id=509867" width="100%" height="500px"></iframe>
Run details:
User agent:
Mozilla/5.0 (iPhone; CPU iPhone OS 17_3_1 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/17.3.1 Mobile/15E148 Safari/604.1
Browser:
Mobile Safari 17
Operating system:
iOS 17.3.1
Device Platform:
Mobile
Date tested:
2 years ago
math random
7.0M/s
crypto uuid
2.0M/s
crypto random values
1.2M/s
uuid lib v4
534K/s
View exact numbers
Test name
Executions per second
✓
math random
7,004,849 Ops/sec
crypto uuid
2,026,843 Ops/sec
crypto random values
1,193,897 Ops/sec
uuid lib v4
533,770 Ops/sec
Script Preparation code:
!function(r,e){"object"==typeof exports&&"undefined"!=typeof module?e(exports):"function"==typeof define&&define.amd?define(["exports"],e):e((r="undefined"!=typeof globalThis?globalThis:r||self).uuid={})}(this,(function(r){"use strict";var e="undefined"!=typeof crypto&&crypto.getRandomValues&&crypto.getRandomValues.bind(crypto)||"undefined"!=typeof msCrypto&&"function"==typeof msCrypto.getRandomValues&&msCrypto.getRandomValues.bind(msCrypto),n=new Uint8Array(16);function t(){if(!e)throw new Error("crypto.getRandomValues() not supported. See https://github.com/uuidjs/uuid#getrandomvalues-not-supported");return e(n)}var o=/^(?:[0-9a-f]{8}-[0-9a-f]{4}-[1-5][0-9a-f]{3}-[89ab][0-9a-f]{3}-[0-9a-f]{12}|00000000-0000-0000-0000-000000000000)$/i;function a(r){return"string"==typeof r&&o.test(r)}for(var i,u,f=[],s=0;s<256;++s)f.push((s+256).toString(16).substr(1));function c(r){var e=arguments.length>1&&void 0!==arguments[1]?arguments[1]:0,n=(f[r[e+0]]+f[r[e+1]]+f[r[e+2]]+f[r[e+3]]+"-"+f[r[e+4]]+f[r[e+5]]+"-"+f[r[e+6]]+f[r[e+7]]+"-"+f[r[e+8]]+f[r[e+9]]+"-"+f[r[e+10]]+f[r[e+11]]+f[r[e+12]]+f[r[e+13]]+f[r[e+14]]+f[r[e+15]]).toLowerCase();if(!a(n))throw TypeError("Stringified UUID is invalid");return n}var l=0,d=0;function v(r){if(!a(r))throw TypeError("Invalid UUID");var e,n=new Uint8Array(16);return n[0]=(e=parseInt(r.slice(0,8),16))>>>24,n[1]=e>>>16&255,n[2]=e>>>8&255,n[3]=255&e,n[4]=(e=parseInt(r.slice(9,13),16))>>>8,n[5]=255&e,n[6]=(e=parseInt(r.slice(14,18),16))>>>8,n[7]=255&e,n[8]=(e=parseInt(r.slice(19,23),16))>>>8,n[9]=255&e,n[10]=(e=parseInt(r.slice(24,36),16))/1099511627776&255,n[11]=e/4294967296&255,n[12]=e>>>24&255,n[13]=e>>>16&255,n[14]=e>>>8&255,n[15]=255&e,n}function p(r,e,n){function t(r,t,o,a){if("string"==typeof r&&(r=function(r){r=unescape(encodeURIComponent(r));for(var e=[],n=0;n<r.length;++n)e.push(r.charCodeAt(n));return e}(r)),"string"==typeof t&&(t=v(t)),16!==t.length)throw TypeError("Namespace must be array-like (16 iterable integer values, 0-255)");var i=new Uint8Array(16+r.length);if(i.set(t),i.set(r,t.length),(i=n(i))[6]=15&i[6]|e,i[8]=63&i[8]|128,o){a=a||0;for(var u=0;u<16;++u)o[a+u]=i[u];return o}return c(i)}try{t.name=r}catch(r){}return t.DNS="6ba7b810-9dad-11d1-80b4-00c04fd430c8",t.URL="6ba7b811-9dad-11d1-80b4-00c04fd430c8",t}function h(r){return 14+(r+64>>>9<<4)+1}function y(r,e){var n=(65535&r)+(65535&e);return(r>>16)+(e>>16)+(n>>16)<<16|65535&n}function g(r,e,n,t,o,a){return y((i=y(y(e,r),y(t,a)))<<(u=o)|i>>>32-u,n);var i,u}function m(r,e,n,t,o,a,i){return g(e&n|~e&t,r,e,o,a,i)}function w(r,e,n,t,o,a,i){return g(e&t|n&~t,r,e,o,a,i)}function b(r,e,n,t,o,a,i){return g(e^n^t,r,e,o,a,i)}function A(r,e,n,t,o,a,i){return g(n^(e|~t),r,e,o,a,i)}var U=p("v3",48,(function(r){if("string"==typeof r){var e=unescape(encodeURIComponent(r));r=new Uint8Array(e.length);for(var n=0;n<e.length;++n)r[n]=e.charCodeAt(n)}return function(r){for(var e=[],n=32*r.length,t="0123456789abcdef",o=0;o<n;o+=8){var a=r[o>>5]>>>o%32&255,i=parseInt(t.charAt(a>>>4&15)+t.charAt(15&a),16);e.push(i)}return e}(function(r,e){r[e>>5]|=128<<e%32,r[h(e)-1]=e;for(var n=1732584193,t=-271733879,o=-1732584194,a=271733878,i=0;i<r.length;i+=16){var u=n,f=t,s=o,c=a;n=m(n,t,o,a,r[i],7,-680876936),a=m(a,n,t,o,r[i+1],12,-389564586),o=m(o,a,n,t,r[i+2],17,606105819),t=m(t,o,a,n,r[i+3],22,-1044525330),n=m(n,t,o,a,r[i+4],7,-176418897),a=m(a,n,t,o,r[i+5],12,1200080426),o=m(o,a,n,t,r[i+6],17,-1473231341),t=m(t,o,a,n,r[i+7],22,-45705983),n=m(n,t,o,a,r[i+8],7,1770035416),a=m(a,n,t,o,r[i+9],12,-1958414417),o=m(o,a,n,t,r[i+10],17,-42063),t=m(t,o,a,n,r[i+11],22,-1990404162),n=m(n,t,o,a,r[i+12],7,1804603682),a=m(a,n,t,o,r[i+13],12,-40341101),o=m(o,a,n,t,r[i+14],17,-1502002290),n=w(n,t=m(t,o,a,n,r[i+15],22,1236535329),o,a,r[i+1],5,-165796510),a=w(a,n,t,o,r[i+6],9,-1069501632),o=w(o,a,n,t,r[i+11],14,643717713),t=w(t,o,a,n,r[i],20,-373897302),n=w(n,t,o,a,r[i+5],5,-701558691),a=w(a,n,t,o,r[i+10],9,38016083),o=w(o,a,n,t,r[i+15],14,-660478335),t=w(t,o,a,n,r[i+4],20,-405537848),n=w(n,t,o,a,r[i+9],5,568446438),a=w(a,n,t,o,r[i+14],9,-1019803690),o=w(o,a,n,t,r[i+3],14,-187363961),t=w(t,o,a,n,r[i+8],20,1163531501),n=w(n,t,o,a,r[i+13],5,-1444681467),a=w(a,n,t,o,r[i+2],9,-51403784),o=w(o,a,n,t,r[i+7],14,1735328473),n=b(n,t=w(t,o,a,n,r[i+12],20,-1926607734),o,a,r[i+5],4,-378558),a=b(a,n,t,o,r[i+8],11,-2022574463),o=b(o,a,n,t,r[i+11],16,1839030562),t=b(t,o,a,n,r[i+14],23,-35309556),n=b(n,t,o,a,r[i+1],4,-1530992060),a=b(a,n,t,o,r[i+4],11,1272893353),o=b(o,a,n,t,r[i+7],16,-155497632),t=b(t,o,a,n,r[i+10],23,-1094730640),n=b(n,t,o,a,r[i+13],4,681279174),a=b(a,n,t,o,r[i],11,-358537222),o=b(o,a,n,t,r[i+3],16,-722521979),t=b(t,o,a,n,r[i+6],23,76029189),n=b(n,t,o,a,r[i+9],4,-640364487),a=b(a,n,t,o,r[i+12],11,-421815835),o=b(o,a,n,t,r[i+15],16,530742520),n=A(n,t=b(t,o,a,n,r[i+2],23,-995338651),o,a,r[i],6,-198630844),a=A(a,n,t,o,r[i+7],10,1126891415),o=A(o,a,n,t,r[i+14],15,-1416354905),t=A(t,o,a,n,r[i+5],21,-57434055),n=A(n,t,o,a,r[i+12],6,1700485571),a=A(a,n,t,o,r[i+3],10,-1894986606),o=A(o,a,n,t,r[i+10],15,-1051523),t=A(t,o,a,n,r[i+1],21,-2054922799),n=A(n,t,o,a,r[i+8],6,1873313359),a=A(a,n,t,o,r[i+15],10,-30611744),o=A(o,a,n,t,r[i+6],15,-1560198380),t=A(t,o,a,n,r[i+13],21,1309151649),n=A(n,t,o,a,r[i+4],6,-145523070),a=A(a,n,t,o,r[i+11],10,-1120210379),o=A(o,a,n,t,r[i+2],15,718787259),t=A(t,o,a,n,r[i+9],21,-343485551),n=y(n,u),t=y(t,f),o=y(o,s),a=y(a,c)}return[n,t,o,a]}(function(r){if(0===r.length)return[];for(var e=8*r.length,n=new Uint32Array(h(e)),t=0;t<e;t+=8)n[t>>5]|=(255&r[t/8])<<t%32;return n}(r),8*r.length))}));function I(r,e,n,t){switch(r){case 0:return e&n^~e&t;case 1:return e^n^t;case 2:return e&n^e&t^n&t;case 3:return e^n^t}}function C(r,e){return r<<e|r>>>32-e}var R=p("v5",80,(function(r){var e=[1518500249,1859775393,2400959708,3395469782],n=[1732584193,4023233417,2562383102,271733878,3285377520];if("string"==typeof r){var t=unescape(encodeURIComponent(r));r=[];for(var o=0;o<t.length;++o)r.push(t.charCodeAt(o))}else Array.isArray(r)||(r=Array.prototype.slice.call(r));r.push(128);for(var a=r.length/4+2,i=Math.ceil(a/16),u=new Array(i),f=0;f<i;++f){for(var s=new Uint32Array(16),c=0;c<16;++c)s[c]=r[64*f+4*c]<<24|r[64*f+4*c+1]<<16|r[64*f+4*c+2]<<8|r[64*f+4*c+3];u[f]=s}u[i-1][14]=8*(r.length-1)/Math.pow(2,32),u[i-1][14]=Math.floor(u[i-1][14]),u[i-1][15]=8*(r.length-1)&4294967295;for(var l=0;l<i;++l){for(var d=new Uint32Array(80),v=0;v<16;++v)d[v]=u[l][v];for(var p=16;p<80;++p)d[p]=C(d[p-3]^d[p-8]^d[p-14]^d[p-16],1);for(var h=n[0],y=n[1],g=n[2],m=n[3],w=n[4],b=0;b<80;++b){var A=Math.floor(b/20),U=C(h,5)+I(A,y,g,m)+w+e[A]+d[b]>>>0;w=m,m=g,g=C(y,30)>>>0,y=h,h=U}n[0]=n[0]+h>>>0,n[1]=n[1]+y>>>0,n[2]=n[2]+g>>>0,n[3]=n[3]+m>>>0,n[4]=n[4]+w>>>0}return[n[0]>>24&255,n[0]>>16&255,n[0]>>8&255,255&n[0],n[1]>>24&255,n[1]>>16&255,n[1]>>8&255,255&n[1],n[2]>>24&255,n[2]>>16&255,n[2]>>8&255,255&n[2],n[3]>>24&255,n[3]>>16&255,n[3]>>8&255,255&n[3],n[4]>>24&255,n[4]>>16&255,n[4]>>8&255,255&n[4]]}));r.NIL="00000000-0000-0000-0000-000000000000",r.parse=v,r.stringify=c,r.v1=function(r,e,n){var o=e&&n||0,a=e||new Array(16),f=(r=r||{}).node||i,s=void 0!==r.clockseq?r.clockseq:u;if(null==f||null==s){var v=r.random||(r.rng||t)();null==f&&(f=i=[1|v[0],v[1],v[2],v[3],v[4],v[5]]),null==s&&(s=u=16383&(v[6]<<8|v[7]))}var p=void 0!==r.msecs?r.msecs:Date.now(),h=void 0!==r.nsecs?r.nsecs:d+1,y=p-l+(h-d)/1e4;if(y<0&&void 0===r.clockseq&&(s=s+1&16383),(y<0||p>l)&&void 0===r.nsecs&&(h=0),h>=1e4)throw new Error("uuid.v1(): Can't create more than 10M uuids/sec");l=p,d=h,u=s;var g=(1e4*(268435455&(p+=122192928e5))+h)%4294967296;a[o++]=g>>>24&255,a[o++]=g>>>16&255,a[o++]=g>>>8&255,a[o++]=255&g;var m=p/4294967296*1e4&268435455;a[o++]=m>>>8&255,a[o++]=255&m,a[o++]=m>>>24&15|16,a[o++]=m>>>16&255,a[o++]=s>>>8|128,a[o++]=255&s;for(var w=0;w<6;++w)a[o+w]=f[w];return e||c(a)},r.v3=U,r.v4=function(r,e,n){var o=(r=r||{}).random||(r.rng||t)();if(o[6]=15&o[6]|64,o[8]=63&o[8]|128,e){n=n||0;for(var a=0;a<16;++a)e[n+a]=o[a];return e}return c(o)},r.v5=R,r.validate=a,r.version=function(r){if(!a(r))throw TypeError("Invalid UUID");return parseInt(r.substr(14,1),16)},Object.defineProperty(r,"__esModule",{value:!0})}));
Tests:
uuid lib v4
uuid.v4()
math random
Math.random()
crypto random values
crypto.getRandomValues(new Uint8Array(1))
crypto uuid
crypto.randomUUID()