Choose a version:
24% The original file has 1623893 bytes (1,585.8k) and is available from the project website.
There you can find the official minified version, too, which brings down the size to 382966 bytes (374.0k, 24%).

After GZIP compression these minified files vary in size:
Boot
  128982 bytes (126.0k)
CDN
cdnjs
  106876 bytes (104.4k)
CDN
gzip -6 (default)
  105480 bytes (103.0k)
local copy
cdnhttps
  105361 bytes (102.9k)
CDN
gzip -9
  105133 bytes (102.7k)
local copy
7zip -mx=9 -tgzip
  101780 bytes (99.4k)
local copy
libdeflate -12
  101574 bytes (99.2k)
local copy
pigz -11 -n
  101507 bytes (99.1k)
local copy
kzip -s0 -rn -b0
  101337 bytes (99.0k)
local copy
Zopfli
  101254 bytes (98.9k)
local copy
Zopfli (defluff)
  101252 bytes (98.9k)
local copy

perma-link to the smallest file on my server:
http://minime.stephan-brumme.com/files/ember/ember-1.10.1.min.js (or via HTTPS)

You will automatically get the smallest Ember 1.10.1 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 4107 bytes by using my Ember 1.10.1 Zopfli version instead of the best available CDN (4.06% smaller than cdnhttps, 101254 vs. 105361 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 --bsr20 --lazy --ohh

(found July 21, 2016)
Description Value Parameter
iterations 100000  --i100000
maximum blocks 8  --mb8
maximum length score 32  --mls32
block splitting recursion 20  --bsr20
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 2 more bytes (101252 bytes).

Verify file integrity

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

MD5:
curl --silent --compressed https://builds.emberjs.com/tags/v1.10.1/ember.min.js --location | md5sum
40b58502e1c2eb2d4ee4370788f3c5a7  -
curl --silent --compressed https://minime.stephan-brumme.com/files/ember/ember-1.10.1.min.zopfli.js.gz | md5sum
40b58502e1c2eb2d4ee4370788f3c5a7  -

SHA1:
curl --silent --compressed https://builds.emberjs.com/tags/v1.10.1/ember.min.js --location | sha1sum
b899becbe5f298b048b40b5b87bd9a5a8fbb26d0  -
curl --silent --compressed https://minime.stephan-brumme.com/files/ember/ember-1.10.1.min.zopfli.js.gz | sha1sum
b899becbe5f298b048b40b5b87bd9a5a8fbb26d0  -

All listed CDNs deliver identical contents:
CDN Size (compressed) MD5 (uncompressed) Timestamp
Boot 128982 bytes 40b58502e1c2eb2d4ee4370788f3c5a7 April 16, 2015 @ 14:54
cdnjs 106876 bytes 40b58502e1c2eb2d4ee4370788f3c5a7 April 15, 2015 @ 08:15
cdnhttps 105361 bytes 40b58502e1c2eb2d4ee4370788f3c5a7 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
101254 bytes -2 bytes zopfli --i100000 --mls32 --bsr20 --lazy --ohh July 21, 2016 @ 20:56
101256 bytes -5 bytes zopfli --i10000 --mls32 --bsr20 --lazy --ohh November 22, 2015 @ 10:00
101261 bytes -1 byte zopfli --i10000 --mls4096 --bsr25 --lazy --ohh November 22, 2015 @ 09:17
101262 bytes -7 bytes zopfli --i10000 --mls2 --bsr6 --lazy --ohh October 14, 2015 @ 01:08
101269 bytes -2 bytes zopfli --i1000 --mls2 --bsr6 --lazy --ohh September 23, 2015 @ 03:34
101271 bytes -9 bytes zopfli --i1000 --mls4096 --bsr13 --lazy --ohh September 10, 2015 @ 23:08
101280 bytes -23 bytes zopfli --i1000 --mls4096 --bsr12 --lazy --ohh September 10, 2015 @ 23:06
101303 bytes zopfli --i100 --mls4096 --bsr10 --lazy --ohh September 10, 2015 @ 13:53

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 @ 09:10.

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
101310 101310 101310 101315 101313 101312 101323 101329 101305 101355 101353 101347 101353 101347 101324
101322 101321 101322 101323 101338 101322 101322 101321 101322 101330 101321 101395 101314 101329 101328
101262 101314 101320 101283 101321 101322 101285 101321 101321 101328 101321 101270 101308 101283 101323
101320 101321 101278 101257 101322 101322 101281 101321 101321 101321 101322 101269 101270 101270 101344
101321 101321 101351 101279 101323 101322 101322 101320 101322 101322 101322 101282 101283 101261 101333
101321 101321 101321 101279 101254 101322 101282 101322 101322 101320 101322 101262 101266 101270 101327
101320 101320 101351 101322 101322 101322 101283 101321 101322 101321 101322 101264 101276 101280 101328
101321 101322 101281 101278 101281 101278 101321 101321 101322 101339 101320 101280 101266 101271 101326
101322 101321 101322 101263 101322 101322 101286 101321 101322 101322 101320 101265 101270 101269 101331
101321 101321 101281 101322 101278 101339 101280 101321 101322 101321 101322 101254 101271 101269 101323
101323 101323 101280 101284 101279 101322 101295 101323 101339 101321 101321 101326 101268 101268 101326
101339 101339 101277 101279 101321 101322 101281 101322 101322 101322 101322 101327 101272 101334 101332
101321 101321 101280 101278 101281 101279 101281 101321 101321 101322 101321 101265 101269 101268 101330
101321 101321 101320 101279 101262 101319 101280 101321 101322 101321 101322 101262 101268 101270 101323
101322 101321 101278 101279 101322 101322 101283 101321 101322 101322 101320 101268 101278 101331 101328
101321 101321 101278 101261 101281 101322 101297 101320 101322 101322 101323 101261 101296 101334 101333
101320 101320 101280 101279 101254 101322 101277 101321 101321 101321 101330 101268 101269 101269 101343
101322 101320 101277 101278 101279 101276 101281 101320 101322 101321 101322 101262 101269 101271 101328
101320 101320 101279 101281 101322 101320 101281 101320 101321 101322 101322 101269 101268 101270 101326
101321 101321 101278 101284 101322 101322 101283 101320 101322 101321 101322 101269 101271 101322 101328
101320 101320 101351 101278 101322 101322 101295 101321 101322 101321 101322 101261 101261 101322 101324
101321 101321 101269 101262 101261 101339 101285 101321 101322 101321 101321 101274 101275 101270 101341
101320 101321 101278 101279 101323 101322 101282 101339 101322 101322 101320 101261 101268 101288 101345

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 101303 bytes 100%
1,000 101269 bytes -34 bytes 100%
10,000 101256 bytes -13 bytes 100%
100,000 101254 bytes -2 bytes 1.16%
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
101337 bytes +83 bytes (+0.08%)
101350 bytes +96 bytes (+0.09%) +13 bytes
101392 bytes +138 bytes (+0.14%) +55 bytes
101462 bytes +208 bytes (+0.21%) +125 bytes
101494 bytes +240 bytes (+0.24%) +157 bytes
101477 bytes +223 bytes (+0.22%) +140 bytes
101477 bytes +223 bytes (+0.22%) +140 bytes
101418 bytes +164 bytes (+0.16%) +81 bytes
101395 bytes +141 bytes (+0.14%) +58 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 70713 bytes -30541 bytes (-30.16%)
RAR (proprietary) RAR rar a -m5 -md64m -mc63:128t -mt1 75193 bytes -26061 bytes (-25.74%)
PPMd (Wikipedia) 7zip 7za a -mx=9 -m0=ppmd 79534 bytes -21720 bytes (-21.45%)
Burrows-Wheeler transform (Wikipedia) bzip2 bzip2 -9 85541 bytes -15713 bytes (-15.52%)
Brotli (Wikipedia) brotli brotli -q 11 88440 bytes -12814 bytes (-12.66%)
LZMA2 (Wikipedia) xz xz -9 90568 bytes -10686 bytes (-10.55%)
Zstandard (Wikipedia) zstd zstd -19 93316 bytes -7938 bytes (-7.84%)

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