Choose a version:
28% The original file has 1444654 bytes (1,410.8k) and is available from the project website.
There you can find the official minified version, too, which brings down the size to 409065 bytes (399.5k, 28%).

After GZIP compression these minified files vary in size:
Boot
  131499 bytes (128.4k)
CDN
cdnjs
  108054 bytes (105.5k)
CDN
gzip -6 (default)
  106648 bytes (104.1k)
local copy
cdnhttps
  106508 bytes (104.0k)
CDN
gzip -9
  106332 bytes (103.8k)
local copy
7zip -mx=9 -tgzip
  102764 bytes (100.4k)
local copy
libdeflate -12
  102586 bytes (100.2k)
local copy
pigz -11 -n
  102524 bytes (100.1k)
local copy
kzip -s0 -rn -b1
  102358 bytes (100.0k)
local copy
Zopfli
  102321 bytes (99.9k)
local copy
Zopfli (defluff)
  102320 bytes (99.9k)
local copy

perma-link to the smallest file on my server:
http://minime.stephan-brumme.com/files/ember/ember-1.11.2.min.js (or via HTTPS)

You will automatically get the smallest Ember 1.11.2 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 4187 bytes by using my Ember 1.11.2 Zopfli version instead of the best available CDN (4.09% smaller than cdnhttps, 102321 vs. 106508 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 --mls32 --bsr11 --lazy --ohh

(found March 23, 2017)
Description Value Parameter
iterations 100000  --i100000
maximum blocks 8  --mb8
maximum length score 32  --mls32
block splitting recursion 11  --bsr11
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 1 more byte (102320 bytes).

Verify file integrity

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

MD5:
curl --silent --compressed https://builds.emberjs.com/tags/v1.11.2/ember.min.js --location | md5sum
7d31e04378b80bcc59d328c07578c168  -
curl --silent --compressed https://minime.stephan-brumme.com/files/ember/ember-1.11.2.min.zopfli.js.gz | md5sum
7d31e04378b80bcc59d328c07578c168  -

SHA1:
curl --silent --compressed https://builds.emberjs.com/tags/v1.11.2/ember.min.js --location | sha1sum
a518b8d5bb574490383cb741b6047d2009fb04cc  -
curl --silent --compressed https://minime.stephan-brumme.com/files/ember/ember-1.11.2.min.zopfli.js.gz | sha1sum
a518b8d5bb574490383cb741b6047d2009fb04cc  -

All listed CDNs deliver identical contents:
CDN Size (compressed) MD5 (uncompressed) Timestamp
Boot 131499 bytes 7d31e04378b80bcc59d328c07578c168 April 16, 2015 @ 15:04
cdnjs 108054 bytes 7d31e04378b80bcc59d328c07578c168 April 15, 2015 @ 08:15
cdnhttps 106508 bytes 7d31e04378b80bcc59d328c07578c168 December 24, 2015 @ 07:33

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
102321 bytes -1 byte zopfli --i100000 --mls32 --bsr11 --lazy --ohh March 23, 2017 @ 18:51
102322 bytes -4 bytes zopfli --i100000 --mls2048 --bsr7 --lazy --ohh July 21, 2016 @ 19:33
102326 bytes -16 bytes zopfli --i10000 --mls32768 --bsr16 --lazy --ohh September 30, 2015 @ 15:17
102342 bytes -10 bytes zopfli --i1000 --mls32768 --bsr16 --lazy --ohh September 30, 2015 @ 14:26
102352 bytes zopfli --i100 --mls32768 --bsr7 --lazy --ohh September 30, 2015 @ 11:03

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

Most recent activity on March 27, 2017 @ 06:42.

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
102365 102327 102327 102366 102376 102392 102392 102392 102392 102367 102370 102369 102370 102394 102366
102330 102329 102331 102328 102356 102329 102329 102327 102328 102328 102327 102329 102335 102341 102332
102366 102329 102328 102358 102360 102361 102362 102362 102358 102359 102363 102364 102363 102369 102370
102336 102332 102328 102327 102328 102329 102329 102329 102328 102328 102322 102329 102329 102335 102326
102328 102329 102325 102327 102326 102331 102330 102329 102328 102328 102327 102329 102334 102335 102332
102330 102330 102331 102328 102330 102329 102327 102329 102328 102328 102328 102329 102334 102343 102332
102332 102333 102331 102328 102326 102329 102328 102329 102328 102329 102329 102328 102329 102343 102331
102325 102325 102327 102328 102321 102329 102328 102328 102328 102328 102329 102325 102329 102336 102332
102325 102330 102327 102327 102328 102329 102326 102329 102328 102328 102324 102329 102333 102336 102332
102325 102325 102327 102329 102328 102329 102328 102329 102327 102328 102329 102329 102326 102342 102332
102329 102329 102331 102327 102328 102329 102329 102329 102328 102329 102324 102329 102335 102342 102332
102336 102332 102328 102327 102326 102329 102329 102329 102328 102327 102325 102329 102333 102342 102332
102331 102325 102326 102326 102328 102327 102328 102329 102328 102328 102327 102328 102336 102335 102322
102328 102328 102328 102327 102327 102413 102329 102327 102330 102329 102322 102326 102327 102337 102333
102322 102328 102327 102327 102328 102329 102327 102328 102328 102327 102322 102329 102328 102342 102332
102330 102330 102331 102326 102328 102329 102328 102329 102328 102328 102329 102329 102329 102336 102332
102329 102329 102327 102328 102328 102329 102328 102328 102328 102327 102325 102328 102328 102340 102332
102325 102325 102327 102327 102328 102329 102327 102329 102328 102327 102324 102329 102329 102341 102332
102329 102329 102328 102328 102328 102329 102328 102327 102328 102328 102329 102328 102334 102336 102332
102329 102329 102327 102327 102327 102329 102328 102329 102327 102328 102325 102328 102329 102337 102336
102327 102329 102327 102327 102328 102329 102328 102329 102327 102328 102325 102328 102335 102340 102332
102329 102329 102327 102327 102328 102324 102327 102328 102330 102328 102324 102328 102327 102336 102332
102328 102325 102328 102327 102326 102329 102329 102328 102328 102329 102329 102329 102335 102342 102332

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 102352 bytes 100%
1,000 102330 bytes -22 bytes 100%
10,000 102322 bytes -8 bytes 100%
100,000 102321 bytes -1 byte 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
102372 bytes +51 bytes (+0.05%) +14 bytes
102358 bytes +37 bytes (+0.04%)
102406 bytes +85 bytes (+0.08%) +48 bytes
102437 bytes +116 bytes (+0.11%) +79 bytes
102477 bytes +156 bytes (+0.15%) +119 bytes
102475 bytes +154 bytes (+0.15%) +117 bytes
102524 bytes +203 bytes (+0.20%) +166 bytes
102500 bytes +179 bytes (+0.17%) +142 bytes
102487 bytes +166 bytes (+0.16%) +129 bytes

Non-DEFLATE Algorithms

Archivers based on completely different compression algorithms often produce superior results.
Unfortunately, browsers only support gzip compression at the moment.
However, support for Brotli is constantly growing - but your browser doesn't support it.
Algorithm Program Parameters Size Compared To Best Zopfli
ZPAQ (Wikipedia) zpaq zpaq -method 69 70770 bytes -31551 bytes (-30.84%)
RAR (proprietary) RAR rar a -m5 -md64m -mc63:128t -mt1 75353 bytes -26968 bytes (-26.36%)
PPMd (Wikipedia) 7zip 7za a -mx=9 -m0=ppmd 79929 bytes -22392 bytes (-21.88%)
Burrows-Wheeler transform (Wikipedia) bzip2 bzip2 -9 85684 bytes -16637 bytes (-16.26%)
Brotli (Wikipedia) brotli brotli -q 11 89755 bytes -12566 bytes (-12.28%)
LZMA2 (Wikipedia) xz xz -9 91548 bytes -10773 bytes (-10.53%)
Zstandard (Wikipedia) zstd zstd -19 94128 bytes -8193 bytes (-8.01%)

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