Choose a version:
28% The original file has 1444850 bytes (1,411.0k) and is available from the project website.
There you can find the official minified version, too, which brings down the size to 409238 bytes (399.6k, 28%).

After GZIP compression these minified files vary in size:
Boot
  131527 bytes (128.4k)
CDN, direct link
gzip -6 (default)
  106644 bytes (104.1k)
local copy
gzip -9
  106325 bytes (103.8k)
local copy
cdnhttps
  106104 bytes (103.6k)
CDN, direct link
cdnjs
  106104 bytes (103.6k)
CDN, direct link
7zip -mx=9 -tgzip
  102776 bytes (100.4k)
local copy
libdeflate -12
  102548 bytes (100.1k)
local copy
pigz -11 -n
  102536 bytes (100.1k)
local copy
kzip -s0 -rn -b1
  102371 bytes (100.0k)
local copy
Zopfli
  102330 bytes (99.9k)
local copy
Zopfli (defluff)
  102329 bytes (99.9k)
local copy

perma-link to the smallest file on my server:
http://minime.stephan-brumme.com/files/ember/ember-1.11.4.min.js

You will automatically get the smallest Ember 1.11.4 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 3774 bytes by using my Ember 1.11.4 Zopfli version instead of the best available CDN (3.69% smaller than cdnjs, 102330 vs. 106104 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 --mls8 --bsr18 --lazy --ohh

(found March 28, 2017)
Description Value Parameter
iterations 100000  --i100000
maximum blocks 8  --mb8
maximum length score 8  --mls8
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 1 more byte (102329 bytes).

Verify file integrity

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

MD5:
curl --silent --compressed http://builds.emberjs.com/tags/v1.11.4/ember.min.js --location | md5sum
dbbed4ba58d609c1dd4ee2ba57db36af  -
curl --silent --compressed http://minime.stephan-brumme.com/files/ember/ember-1.11.4.min.zopfli.js.gz | md5sum
dbbed4ba58d609c1dd4ee2ba57db36af  -

SHA1:
curl --silent --compressed http://builds.emberjs.com/tags/v1.11.4/ember.min.js --location | sha1sum
45cee5bd0e387e7a0daca8496d5d0cd04388ad2f  -
curl --silent --compressed http://minime.stephan-brumme.com/files/ember/ember-1.11.4.min.zopfli.js.gz | sha1sum
45cee5bd0e387e7a0daca8496d5d0cd04388ad2f  -

All listed CDNs deliver identical contents:
CDN Size (compressed) MD5 (uncompressed) Timestamp
Boot 131527 bytes dbbed4ba58d609c1dd4ee2ba57db36af January 16, 2016 @ 14:39
cdnhttps 106104 bytes dbbed4ba58d609c1dd4ee2ba57db36af November 22, 2016 @ 16:33
cdnjs 106104 bytes dbbed4ba58d609c1dd4ee2ba57db36af January 15, 2016 @ 13:32

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

Other Versions

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

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
102330 bytes -1 byte zopfli --i100000 --mls8 --bsr18 --lazy --ohh March 28, 2017 @ 17:02
102331 bytes -1 byte zopfli --i100000 --mls16 --bsr17 --lazy --ohh March 27, 2017 @ 11:07
102332 bytes -1 byte zopfli --i100000 --mls16 --bsr19 --lazy --ohh January 26, 2016 @ 21:51
102333 bytes -1 byte zopfli --i100000 --mls256 --bsr16 --lazy --ohh January 26, 2016 @ 20:23
102334 bytes -1 byte zopfli --i100000 --mls256 --bsr9 --lazy --ohh January 26, 2016 @ 16:51
102335 bytes -3 bytes zopfli --i10000 --mls256 --bsr9 --lazy --ohh January 25, 2016 @ 22:31
102338 bytes -1 byte zopfli --i10000 --mls1024 --bsr20 --lazy --ohh January 25, 2016 @ 18:42
102339 bytes -5 bytes zopfli --i10000 --mls64 --bsr13 --lazy --ohh January 25, 2016 @ 13:45
102344 bytes -12 bytes zopfli --i10000 --mls32768 --bsr16 --lazy --ohh January 25, 2016 @ 10:24
102356 bytes -12 bytes zopfli --i1000 --mls32768 --bsr16 --lazy --ohh January 25, 2016 @ 09:48
102368 bytes zopfli --i100 --mls32768 --bsr16 --lazy --ohh January 25, 2016 @ 09:37

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 @ 20:22.

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
102336 102339 102340 102369 102378 102373 102345 102402 102402 102371 102375 102370 102374 102409 102373
102342 102342 102342 102342 102357 102339 102340 102338 102338 102338 102339 102336 102343 102349 102343
102372 102367 102343 102372 102371 102372 102402 102402 102402 102374 102369 102367 102369 102409 102381
102336 102340 102352 102336 102336 102337 102339 102336 102339 102339 102369 102368 102342 102348 102343
102340 102340 102338 102338 102338 102341 102340 102334 102339 102337 102339 102338 102345 102348 102343
102338 102340 102341 102339 102338 102333 102338 102334 102339 102340 102339 102336 102343 102342 102345
102348 102349 102348 102342 102338 102337 102339 102338 102338 102338 102338 102338 102336 102349 102343
102341 102340 102343 102338 102339 102337 102336 102338 102338 102338 102339 102338 102342 102355 102343
102341 102341 102338 102338 102339 102337 102339 102334 102338 102338 102339 102338 102344 102349 102344
102352 102340 102337 102337 102344 102339 102339 102336 102339 102338 102338 102337 102378 102351 102343
102340 102340 102347 102338 102338 102337 102337 102336 102338 102345 102338 102336 102342 102349 102343
102336 102344 102352 102332 102338 102337 102337 102339 102338 102340 102338 102338 102346 102348 102343
102339 102338 102340 102341 102340 102340 102337 102333 102338 102338 102340 102338 102342 102348 102344
102347 102352 102353 102331 102340 102339 102337 102340 102338 102345 102339 102343 102337 102348 102345
102337 102343 102330 102338 102338 102333 102337 102340 102339 102337 102333 102338 102378 102348 102344
102341 102340 102337 102332 102338 102337 102339 102334 102339 102338 102338 102338 102343 102348 102344
102340 102340 102338 102338 102338 102337 102339 102336 102338 102338 102338 102338 102342 102349 102344
102337 102338 102337 102339 102338 102337 102339 102336 102338 102338 102338 102338 102344 102348 102343
102340 102340 102340 102338 102338 102333 102337 102336 102340 102338 102338 102337 102343 102354 102343
102338 102338 102337 102337 102338 102336 102339 102337 102338 102338 102338 102333 102337 102348 102345
102338 102338 102337 102338 102338 102336 102339 102336 102338 102338 102339 102337 102342 102348 102344
102338 102341 102343 102338 102338 102337 102339 102337 102340 102339 102338 102337 102336 102346 102343
102352 102352 102353 102339 102338 102333 102333 102340 102338 102340 102337 102336 102342 102349 102343

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 102368 bytes 100%
1,000 102348 bytes -20 bytes 100%
10,000 102335 bytes -13 bytes 100%
100,000 102330 bytes -5 bytes 5.51%
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
102385 bytes +55 bytes (+0.05%) +14 bytes
102371 bytes +41 bytes (+0.04%)
102435 bytes +105 bytes (+0.10%) +64 bytes
102458 bytes +128 bytes (+0.13%) +87 bytes
102515 bytes +185 bytes (+0.18%) +144 bytes
102524 bytes +194 bytes (+0.19%) +153 bytes
102533 bytes +203 bytes (+0.20%) +162 bytes
102510 bytes +180 bytes (+0.18%) +139 bytes
102503 bytes +173 bytes (+0.17%) +132 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 70750 bytes -31580 bytes (-30.86%)
RAR (proprietary) RAR rar a -m5 -md64m -mc63:128t -mt1 75345 bytes -26985 bytes (-26.37%)
PPMd (Wikipedia) 7zip 7za a -mx=9 -m0=ppmd 80057 bytes -22273 bytes (-21.77%)
Burrows-Wheeler transform (Wikipedia) bzip2 bzip2 -9 85691 bytes -16639 bytes (-16.26%)
Brotli (Wikipedia) brotli brotli -q 11 89676 bytes -12654 bytes (-12.37%)
LZMA2 (Wikipedia) xz xz -9 91572 bytes -10758 bytes (-10.51%)
ZSTD (Wikipedia) zstd zstd -19 94131 bytes -8199 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 2017.
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