Choose a version:
27% The original file has 1844107 bytes (1,800.9k) and is available from the project website.
There you can find the official minified version, too, which brings down the size to 500039 bytes (488.3k, 27%).

After GZIP compression these minified files vary in size:
Boot
  156776 bytes (153.1k)
CDN
gzip -6 (default)
  126882 bytes (123.9k)
local copy
cdnhttps
  126851 bytes (123.9k)
CDN
gzip -9
  126443 bytes (123.5k)
local copy
cdnjs
  126311 bytes (123.4k)
CDN
7zip -mx=9 -tgzip
  122429 bytes (119.6k)
local copy
libdeflate -12
  122241 bytes (119.4k)
local copy
pigz -11 -n
  121965 bytes (119.1k)
local copy
kzip -s0 -rn -b0
  121901 bytes (119.0k)
local copy
Zopfli
  121791 bytes (118.9k)
local copy
Zopfli (defluff)
  121788 bytes (118.9k)
local copy

perma-link to the smallest file on my server:
http://minime.stephan-brumme.com/files/ember/ember-1.13.11.min.js

You will automatically get the smallest Ember 1.13.11 file, ETag caching is available and
if your browser doesn't support GZIP decompression then the uncompressed version will be sent.

Currently best Zopfli settings

Save 4520 bytes by using my Ember 1.13.11 Zopfli version instead of the best available CDN (3.71% smaller than cdnjs, 121791 vs. 126311 bytes):
You can use my super-compressed files for whatever purpose you like as long as you respect the library's original license agreement.
There are no restrictions from my side - but please avoid hot-linking if you run a high-traffic website.

These command-line settings yielded the best compression ratio so far (Linux version of zopfli-krzymod):
zopfli --i100000 --mb8 --mls2 --bsr18 --lazy --ohh

(found January 26, 2016)
Description Value Parameter
iterations 100000  --i100000
maximum blocks 8  --mb8
maximum length score 2  --mls2
block splitting recursion 18  --bsr18
lazy matching in LZ77 yes  --lazy
optimized Huffman headers yes  --ohh
initial random W for iterations 1  --rw1
initial random Z for iterations 2  --rz2

Even Smaller Files Thanks To Defluff

Zopfli's output can be further optimized by the defluff tool.
In this particular case, defluff saves 3 more bytes (121788 bytes).

Verify file integrity

After decompression, my uncompressed files are identical to the original ones:

MD5:
curl --silent --compressed http://builds.emberjs.com/tags/v1.13.11/ember.min.js --location | md5sum
42e87d630895baa9494af1472429d343  -
curl --silent --compressed http://minime.stephan-brumme.com/files/ember/ember-1.13.11.min.zopfli.js.gz | md5sum
42e87d630895baa9494af1472429d343  -

SHA1:
curl --silent --compressed http://builds.emberjs.com/tags/v1.13.11/ember.min.js --location | sha1sum
9642490a51caa8c8e60c29c9e0f81bf8c63a50a3  -
curl --silent --compressed http://minime.stephan-brumme.com/files/ember/ember-1.13.11.min.zopfli.js.gz | sha1sum
9642490a51caa8c8e60c29c9e0f81bf8c63a50a3  -

All listed CDNs deliver identical contents:
CDN Size (compressed) MD5 (uncompressed) Timestamp
Boot 156776 bytes 42e87d630895baa9494af1472429d343 December 1, 2015 @ 19:12
cdnhttps 126851 bytes 42e87d630895baa9494af1472429d343 December 24, 2015 @ 07:33
cdnjs 126311 bytes 42e87d630895baa9494af1472429d343 November 18, 2015 @ 03:35

Note: only the MD5 hashes are shown to keep things simple.

Other Versions

Available Ember versions at minime.stephan-brumme.com:

3.0.0,
2.18.2, 2.18.1, 2.18.0,
2.17.2, 2.17.1, 2.17.0,
2.16.2, 2.16.1, 2.16.0,
2.15.3, 2.15.2, 2.15.1, 2.15.0,
2.14.1, 2.14.0,
2.13.4, 2.13.3, 2.13.2, 2.13.1, 2.13.0,
2.12.2, 2.12.1, 2.12.0,
2.11.3, 2.11.2, 2.11.1, 2.11.0,
2.10.2, 2.10.1, 2.10.0,
2.9.1, 2.9.0,
2.8.3, 2.8.2, 2.8.1, 2.8.0,
2.7.3, 2.7.2, 2.7.1, 2.7.0,
2.6.2, 2.6.1, 2.6.0,
2.5.1, 2.5.0,
2.4.6, 2.4.5, 2.4.4, 2.4.3, 2.4.2, 2.4.1, 2.4.0,
2.3.1, 2.3.0,
2.2.2, 2.2.1, 2.2.0,
2.1.2, 2.1.1, 2.1.0,
2.0.3, 2.0.2, 2.0.1, 2.0.0,
1.13.13, 1.13.12, 1.13.11, 1.13.10, 1.13.9, 1.13.8, 1.13.7, 1.13.6, 1.13.5, 1.13.4, 1.13.3, 1.13.2, 1.13.1, 1.13.0,
1.12.2, 1.12.1, 1.12.0,
1.11.4, 1.11.3, 1.11.2, 1.11.1, 1.11.0,
1.10.1, 1.10.0,
1.9.1, 1.9.0,
1.8.1, 1.8.0,
1.7.1, 1.7.0,
1.6.1, 1.6.0,
1.5.1, 1.5.0,
1.4.0,
1.3.2, 1.3.1, 1.3.0,
1.2.2, 1.2.1, 1.2.0,
1.0.1, 1.0.0

The project site contains an overview how well these versions were compressed.
Other interesting projects are AngularJS, BackboneJS, Bootstrap, D3, Dojo, jQuery, Knockout, lodash, React, Socket.IO, ThreeJS, UnderscoreJS and Vue.

Changelog

Best Zopfli parameters so far:
Size Improvement Parameters Found
121791 bytes -1 byte zopfli --i100000 --mls2 --bsr18 --lazy --ohh January 26, 2016 @ 20:03
121792 bytes -13 bytes zopfli --i100000 --mls2 --bsr12 --lazy --ohh January 26, 2016 @ 17:38
121805 bytes -16 bytes zopfli --i10000 --mls2 --bsr18 --lazy --ohh January 25, 2016 @ 10:19
121821 bytes -4 bytes zopfli --i1000 --mls2 --bsr18 --lazy --ohh January 25, 2016 @ 09:51
121825 bytes -22 bytes zopfli --i1000 --mls16384 --bsr6 --lazy --ohh January 25, 2016 @ 09:47
121847 bytes zopfli --i100 --mls16384 --bsr6 --lazy --ohh January 25, 2016 @ 08:41

If there are multiple parameter sets yielding the same compressed size, only the first one found is shown.

Most recent activity on March 28, 2017 @ 11:59.

Heatmaps

This Zopfli heatmap visualizes how compression changes when modifying the --bsr and --mls parameter.
Cell's contents is the best filesize achieved (in bytes, hover with mouse over cells to see number of iterations).

Good parameters are green, bad are red. The best and worst are bold as well.
The brightness of the blue background color indicates how many iterations were processed:
10,000 or 100,000.
bsr \ mls
2 4 8 16 32 64 128 256 512 1024 2048 4096 8192 16384 32768
bsr \ mls
2 4 8 16 32 64 128 256 512 1024 2048 4096 8192 16384 32768
121962 121968 121969 121901 121894 121886 122012 121964 122001 121968 121974 122013 122010 122014 121963
121849 121845 121838 121853 121837 121876 121819 121832 121828 121835 121823 122013 122010 121821 121957
121833 121831 121866 121863 121863 121819 121842 121814 121816 121811 121833 122013 122010 121809 121865
121833 121862 121862 121851 121947 121846 121828 121817 121811 121850 121967 122013 122010 121813 121943
121831 121827 121864 121853 121807 121815 121949 121946 121947 121957 121968 122013 121949 121944 121950
121810 121810 121810 121810 121810 121813 121947 121958 121948 121944 121943 121942 121948 121946 121949
121810 121818 121818 121811 121945 121942 121944 121948 121949 121945 121944 121941 121947 121943 121949
121857 121862 121863 121855 121813 121797 121951 121947 121949 121943 121943 121941 121949 121943 121948
121792 121817 121812 121811 121810 121813 121946 121950 121949 121943 121944 121942 121948 121943 121948
121844 121870 121857 121856 121946 121941 121947 121947 121949 121943 121944 121941 121948 121943 121949
121823 121818 121831 121825 121947 121816 121947 121948 121949 121943 121951 121942 121952 121943 121944
121855 121864 121862 121817 121810 121827 121947 121950 121948 121943 121944 121941 121951 121948 121950
121858 121814 121857 121818 121950 121941 121942 121942 121951 121944 121945 121941 121949 121943 121951
121856 121858 121861 121856 121945 121806 121946 121947 121948 121943 121944 121942 121948 121943 121951
121791 121868 121813 121855 121821 121833 121947 121958 121954 121943 121943 121941 121946 121943 121948
121792 121831 121816 121813 121943 121831 121947 121947 121949 121945 121943 121941 121942 121948 121953
121833 121868 121854 121870 121946 121813 121947 121947 121949 121943 121944 121941 121949 121943 121944
121867 121868 121863 121855 121812 121813 121947 121950 121944 121943 121943 121942 121949 121943 121953
121852 121859 121867 121853 121810 121941 121946 121947 121944 121944 121943 121941 121943 121943 121950
121852 121861 121861 121854 121814 121823 121947 121947 121949 121942 121944 121942 121949 121943 121952
121862 121870 121862 121854 121947 121831 121947 121950 121939 121943 121944 121941 121948 121943 121950
121869 121873 121862 121864 121810 121830 121948 121947 121949 121943 121942 121941 121943 121943 121950
121854 121860 121868 121857 121947 121832 121946 121948 121949 121944 121944 121942 121948 121943 121951

Due to the Monte Carlo design of my search algorithm, not all parameters have reached the same number of iterations yet:
Iterations Min. Bytes Reduction Coverage
100 121847 bytes 100%
1,000 121821 bytes -26 bytes 100%
10,000 121805 bytes -16 bytes 100%
100,000 121791 bytes -14 bytes 1.74%
1,000,000
10,000,000

KZIP has far less options available for tuning/optimization. I only played around with the number of blocks (parameter -n):
Blocks Min. Bytes Compared To Best Zopfli Compared To Best KZIP
121901 bytes +110 bytes (+0.09%)
122021 bytes +230 bytes (+0.19%) +120 bytes
122029 bytes +238 bytes (+0.20%) +128 bytes
121991 bytes +200 bytes (+0.16%) +90 bytes
121925 bytes +134 bytes (+0.11%) +24 bytes
121918 bytes +127 bytes (+0.10%) +17 bytes
121923 bytes +132 bytes (+0.11%) +22 bytes
122000 bytes +209 bytes (+0.17%) +99 bytes
122004 bytes +213 bytes (+0.17%) +103 bytes

Non-DEFLATE Algorithms

Archivers based on completely different compression algorithms often produce superior results.
Unfortunately, browsers only support gzip compression at the moment.
Algorithm Program Parameters Size Compared To Best Zopfli
ZPAQ (Wikipedia) zpaq zpaq -method 69 82859 bytes -38932 bytes (-31.97%)
RAR (proprietary) RAR rar a -m5 -md64m -mc63:128t -mt1 89053 bytes -32738 bytes (-26.88%)
PPMd (Wikipedia) 7zip 7za a -mx=9 -m0=ppmd 96501 bytes -25290 bytes (-20.77%)
Burrows-Wheeler transform (Wikipedia) bzip2 bzip2 -9 101191 bytes -20600 bytes (-16.91%)
Brotli (Wikipedia) brotli brotli -q 11 105782 bytes -16009 bytes (-13.14%)
LZMA2 (Wikipedia) xz xz -9 108048 bytes -13743 bytes (-11.28%)
ZSTD (Wikipedia) zstd zstd -19 111180 bytes -10611 bytes (-8.71%)

Detailled Analysis

I wrote a DEFLATE decoder in Javascript. Click the button below to start a client-side analysis of the smallest gzipped files (may take a second):


Notes: pigz is a fast open source multi-threaded implementation of gzip written by one of the original authors of gzip.
However, when using compression level 11, pigz actually switches to the slower Zopfli algorithm and isn't multi-threaded anymore.
KrzyMOD's extensions to Zopfli offer the highest level of configuration and is therefore used for my brute-force search.
Ken Silverman wrote the closed-source KZIP compression program and Jonathon Fowler ported it to Linux.
Defluff was created by Joachim Henke; DeflOpt is a tool by Ben Jos Walbeehm.

website made by Stephan Brumme in 2015 and still improving in 2018.
all timestamps are displayed in central european time. see my changelog.
no flash, not even images or external css files - and everything squeezed into a single html file.
which was handsomely compressed before releasing it into the wild internet - obviously.

please visit my homepage and my blog, too.
email: minime (at) stephan-brumme.com