Choose a version:
31% The original file has 1554221 bytes (1,517.8k) and is available from the project website.
There you can find the official minified version, too, which brings down the size to 474120 bytes (463.0k, 31%).

After GZIP compression these minified files vary in size:
gzip -6 (default)
  118559 bytes (115.8k)
local copy
gzip -9
  118081 bytes (115.3k)
local copy
7zip -mx=9 -tgzip
  113985 bytes (111.3k)
local copy
libdeflate -12
  113922 bytes (111.3k)
local copy
pigz -11 -n
  113805 bytes (111.1k)
local copy
kzip -s0 -rn -b3
  113716 bytes (111.1k)
local copy
Zopfli
  113680 bytes (111.0k)
local copy
Zopfli (defluff)
  113676 bytes (111.0k)
local copy

perma-link to the smallest file on my server:
http://minime.stephan-brumme.com/files/ember/ember-3.0.0.min.js (or via HTTPS)

You will automatically get the smallest Ember 3.0.0 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

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 --i1000000 --mb8 --mls8192 --bsr6 --lazy --ohh

(found February 16, 2018)
Description Value Parameter
iterations 1000000  --i1000000
maximum blocks 8  --mb8
maximum length score 8192  --mls8192
block splitting recursion 6  --bsr6
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 4 more bytes (113676 bytes).

Verify file integrity

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

MD5:
curl --silent --compressed https://builds.emberjs.com/tags/v3.0.0/ember.min.js --location | md5sum
27f8a49e5222f8cba6801e279dff16fc  -
curl --silent --compressed https://minime.stephan-brumme.com/files/ember/ember-3.0.0.min.zopfli.js.gz | md5sum
27f8a49e5222f8cba6801e279dff16fc  -

SHA1:
curl --silent --compressed https://builds.emberjs.com/tags/v3.0.0/ember.min.js --location | sha1sum
ad3d0ccc32a005576a0c1c1b29a85eb959df7d11  -
curl --silent --compressed https://minime.stephan-brumme.com/files/ember/ember-3.0.0.min.zopfli.js.gz | sha1sum
ad3d0ccc32a005576a0c1c1b29a85eb959df7d11  -

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
113680 bytes -1 byte zopfli --i1000000 --mls8192 --bsr6 --lazy --ohh February 16, 2018 @ 19:10
113681 bytes -5 bytes zopfli --i100000 --mls8192 --bsr6 --lazy --ohh February 14, 2018 @ 20:48
113686 bytes -6 bytes zopfli --i10000 --mls8192 --bsr6 --lazy --ohh February 14, 2018 @ 17:07
113692 bytes -1 byte zopfli --i100000 --mls4096 --bsr23 --lazy --ohh February 14, 2018 @ 13:25
113693 bytes -4 bytes zopfli --i10000 --mls4096 --bsr23 --lazy --ohh February 14, 2018 @ 10:51
113697 bytes -1 byte zopfli --i1000 --mls4096 --bsr23 --lazy --ohh February 14, 2018 @ 10:05
113698 bytes -12 bytes zopfli --i1000 --mls4096 --bsr25 --lazy --ohh February 14, 2018 @ 09:47
113710 bytes -2 bytes zopfli --i1000 --mls2 --bsr21 --lazy --ohh February 14, 2018 @ 09:46
113712 bytes zopfli --i100 --mls64 --bsr16 --lazy --ohh February 14, 2018 @ 09:04

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

Most recent activity on February 16, 2018 @ 19:50.

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, 100,000 or 1,000,000.
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
113708 113708 113709 113709 113705 113726 113712 113708 113712 113714 113708 113709 113708 113736 113706
113711 113710 113710 113711 113712 113711 113715 113712 113702 113702 113695 113692 113696 113705 113746
113695 113693 113695 113693 113693 113692 113712 113707 113704 113704 113694 113693 113680 113703 113715
113697 113697 113695 113700 113707 113697 113714 113715 113707 113707 113697 113696 113715 113722 113714
113695 113696 113695 113694 113695 113697 113712 113705 113707 113708 113692 113692 113696 113708 113745
113696 113696 113711 113694 113694 113696 113693 113704 113703 113701 113692 113692 113695 113708 113713
113712 113704 113692 113701 113694 113701 113701 113700 113698 113699 113693 113695 113714 113713 113758
113694 113700 113691 113702 113700 113702 113704 113704 113702 113700 113702 113692 113696 113692 113714
113692 113693 113694 113695 113696 113698 113703 113703 113695 113693 113694 113691 113695 113696 113747
113701 113699 113700 113697 113706 113705 113698 113708 113702 113698 113692 113692 113693 113713 113723
113695 113695 113693 113703 113702 113701 113704 113699 113697 113696 113698 113700 113694 113718 113743
113694 113696 113694 113699 113694 113695 113704 113702 113698 113693 113694 113688 113697 113713 113748
113694 113693 113696 113693 113699 113696 113702 113701 113697 113699 113692 113695 113696 113713 113752
113692 113695 113696 113700 113701 113698 113697 113703 113701 113698 113699 113695 113713 113721 113718
113693 113694 113691 113697 113703 113701 113704 113704 113696 113693 113692 113693 113711 113704 113718
113694 113695 113694 113698 113704 113701 113703 113704 113698 113703 113693 113695 113695 113703 113746
113694 113693 113698 113692 113694 113699 113705 113700 113697 113703 113692 113691 113693 113703 113720
113692 113695 113703 113692 113706 113697 113699 113703 113696 113697 113692 113693 113693 113703 113748
113694 113694 113698 113697 113702 113698 113702 113698 113701 113700 113691 113694 113705 113703 113719
113695 113700 113697 113701 113702 113701 113703 113700 113704 113700 113701 113692 113711 113704 113710
113694 113694 113691 113694 113692 113697 113696 113700 113697 113696 113691 113694 113690 113694 113747
113695 113695 113692 113697 113696 113696 113699 113702 113697 113695 113692 113692 113695 113703 113747
113695 113697 113697 113702 113698 113702 113705 113700 113701 113700 113702 113693 113699 113708 113747

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 113712 bytes 100%
1,000 113697 bytes -15 bytes 100%
10,000 113686 bytes -11 bytes 100%
100,000 113681 bytes -5 bytes 0.87%
1,000,000 113680 bytes -1 byte 0.29%
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
113754 bytes +74 bytes (+0.07%) +38 bytes
113798 bytes +118 bytes (+0.10%) +82 bytes
113763 bytes +83 bytes (+0.07%) +47 bytes
113716 bytes +36 bytes (+0.03%)
113751 bytes +71 bytes (+0.06%) +35 bytes
113772 bytes +92 bytes (+0.08%) +56 bytes
113775 bytes +95 bytes (+0.08%) +59 bytes
113747 bytes +67 bytes (+0.06%) +31 bytes
113772 bytes +92 bytes (+0.08%) +56 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 78475 bytes -35205 bytes (-30.97%)
RAR (proprietary) RAR rar a -m5 -md64m -mc63:128t -mt1 85073 bytes -28607 bytes (-25.16%)
PPMd (Wikipedia) 7zip 7za a -mx=9 -m0=ppmd 90972 bytes -22708 bytes (-19.98%)
Burrows-Wheeler transform (Wikipedia) bzip2 bzip2 -9 97495 bytes -16185 bytes (-14.24%)
Brotli (Wikipedia) brotli brotli -q 11 99325 bytes -14355 bytes (-12.63%)
LZMA2 (Wikipedia) xz xz -9 100840 bytes -12840 bytes (-11.29%)
Zstandard (Wikipedia) zstd zstd -19 103696 bytes -9984 bytes (-8.78%)

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