Ember 2.11.3 - as small as it gets (near-perfect GZIP compression)

Choose a version:

The original file has 1852517 bytes (1,809.1k) and is available from the project website.
There you can find the official minified version, too, which brings down the size to 528047 bytes (515.7k, 29%).

After GZIP compression these minified files vary in size:

Boot	162823 bytes (159.0k)	CDN
cdnjs	132960 bytes (129.8k)	CDN
gzip -6 (default)	131144 bytes (128.1k)	local copy
gzip -9	130664 bytes (127.6k)	local copy
7zip -mx=9 -tgzip	126102 bytes (123.1k)	local copy
zultra	126011 bytes (123.1k)	local copy
libdeflate -12	125962 bytes (123.0k)	local copy
pigz -11 -n	125882 bytes (122.9k)	local copy
kzip -s0 -rn -b5	125649 bytes (122.7k)	local copy
Zopfli	125601 bytes (122.7k)	local copy
Zopfli (defluff)	125597 bytes (122.7k)	local copy

perma-link to the smallest file on my server:
http://minime.stephan-brumme.com/files/ember/ember-2.11.3.min.js (or via HTTPS)

You will automatically get the smallest Ember 2.11.3 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 7359 bytes by using my Ember 2.11.3 Zopfli version instead of the best available CDN (5.86% smaller than cdnjs, 125601 vs. 132960 bytes):

Download

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 --mls16384 --bsr15 --lazy --ohh

(found March 25, 2017)

Description	Value	Parameter
iterations	1000000	--i1000000
maximum blocks	8	--mb8
maximum length score	16384	--mls16384
block splitting recursion	15	--bsr15
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 (125597 bytes).

Download

Verify file integrity

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

MD5:
curl --silent --compressed https://builds.emberjs.com/tags/v2.11.3/ember.min.js --location | md5sum
77061b5dba4532f08d2913ce4634115b -
curl --silent --compressed https://minime.stephan-brumme.com/files/ember/ember-2.11.3.min.zopfli.js.gz | md5sum
77061b5dba4532f08d2913ce4634115b -

SHA1:
curl --silent --compressed https://builds.emberjs.com/tags/v2.11.3/ember.min.js --location | sha1sum
6d8516cd191bf8333b32dcc2f41272e08e269ecc -
curl --silent --compressed https://minime.stephan-brumme.com/files/ember/ember-2.11.3.min.zopfli.js.gz | sha1sum
6d8516cd191bf8333b32dcc2f41272e08e269ecc -

All listed CDNs deliver identical contents:

CDN	Size (compressed)	MD5 (uncompressed)	Timestamp
Boot	162823 bytes	77061b5dba4532f08d2913ce4634115b	March 12, 2017 @ 22:40
cdnjs	132960 bytes	77061b5dba4532f08d2913ce4634115b	March 9, 2017 @ 05:33

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
125601 bytes	-2 bytes	zopfli --i1000000 --mls16384 --bsr15 --lazy --ohh	March 25, 2017 @ 14:55
125603 bytes	-3 bytes	zopfli --i100000 --mls16384 --bsr15 --lazy --ohh	March 23, 2017 @ 14:03
125606 bytes	-3 bytes	zopfli --i100000 --mls16384 --bsr23 --lazy --ohh	March 23, 2017 @ 10:55
125609 bytes	-9 bytes	zopfli --i10000 --mls16384 --bsr23 --lazy --ohh	March 12, 2017 @ 01:37
125618 bytes	-27 bytes	zopfli --i1000 --mls16384 --bsr8 --lazy --ohh	March 11, 2017 @ 14:06
125645 bytes	–	zopfli --i100 --mls16384 --bsr23 --lazy --ohh	March 11, 2017 @ 04:41

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

Most recent activity on July 20, 2020 @ 12:54.

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
2	125757	125756	125756	125756	125757	125756	125756	125666	125667	125671	125748	125756	125757	125701	125757
4	125679	125681	125632	125756	125757	125685	125680	125681	125683	125633	125637	125756	125757	125611	125757
6	125692	125692	125694	125689	125690	125689	125690	125690	125688	125650	125699	125642	125676	125616	125681
7	125639	125637	125688	125695	125690	125687	125666	125688	125668	125641	125655	125756	125757	125618	125694
8	125692	125692	125691	125690	125688	125691	125689	125688	125665	125659	125659	125756	125757	125611	125681
9	125693	125693	125688	125697	125690	125688	125688	125688	125688	125637	125650	125628	125682	125691	125682
10	125690	125691	125690	125690	125690	125688	125688	125692	125688	125646	125628	125627	125675	125633	125686
11	125688	125688	125688	125688	125689	125688	125689	125689	125688	125653	125661	125631	125674	125615	125681
12	125689	125689	125688	125689	125690	125690	125688	125689	125690	125655	125640	125633	125687	125627	125684
13	125689	125689	125688	125695	125689	125688	125688	125688	125688	125675	125705	125669	125682	125638	125682
14	125667	125687	125689	125689	125687	125689	125684	125692	125688	125673	125650	125675	125674	125625	125682
15	125666	125687	125688	125695	125690	125687	125688	125692	125688	125647	125673	125627	125687	125601	125694
16	125688	125688	125688	125693	125690	125689	125688	125688	125688	125645	125641	125673	125687	125619	125682
17	125689	125689	125688	125695	125691	125688	125688	125688	125688	125653	125655	125629	125687	125627	125694
18	125689	125689	125688	125688	125691	125688	125692	125688	125688	125637	125636	125697	125675	125624	125682
19	125689	125689	125690	125688	125691	125681	125679	125692	125688	125631	125659	125669	125687	125626	125686
20	125689	125689	125688	125692	125689	125691	125688	125727	125691	125638	125658	125635	125672	125633	125690
21	125689	125689	125688	125688	125692	125688	125688	125692	125688	125635	125639	125627	125674	125621	125682
22	125689	125689	125688	125695	125691	125690	125689	125688	125688	125639	125638	125632	125673	125687	125686
23	125689	125689	125688	125695	125690	125690	125688	125692	125690	125650	125665	125634	125689	125606	125686
25	125689	125689	125688	125695	125690	125681	125688	125688	125688	125651	125638	125629	125682	125634	125686
30	125689	125689	125688	125688	125690	125688	125688	125688	125688	125660	125657	125669	125682	125634	125681
40	125692	125698	125688	125688	125689	125688	125688	125688	125688	125651	125639	125627	125687	125633	125682

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	125645 bytes	–	100%
1,000	125618 bytes	-27 bytes	100%
10,000	125609 bytes	-9 bytes	100%
100,000	125603 bytes	-6 bytes	0.58%
1,000,000	125601 bytes	-2 bytes	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
(any)	125715 bytes	+114 bytes (+0.09%)	+66 bytes
1	125724 bytes	+123 bytes (+0.10%)	+75 bytes
2	125769 bytes	+168 bytes (+0.13%)	+120 bytes
3	125766 bytes	+165 bytes (+0.13%)	+117 bytes
4	125711 bytes	+110 bytes (+0.09%)	+62 bytes
5	125649 bytes	+48 bytes (+0.04%)	–
6	125705 bytes	+104 bytes (+0.08%)	+56 bytes
7	125723 bytes	+122 bytes (+0.10%)	+74 bytes
8	125774 bytes	+173 bytes (+0.14%)	+125 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	85124 bytes	-40477 bytes (-32.23%)
RAR (proprietary)	RAR	rar a -m5 -md64m -mc63:128t -mt1	92062 bytes	-33539 bytes (-26.70%)
PPMd (Wikipedia)	7zip	7za a -mx=9 -m0=ppmd	95734 bytes	-29867 bytes (-23.78%)
Burrows-Wheeler transform (Wikipedia)	bzip2	bzip2 -9	105563 bytes	-20038 bytes (-15.95%)
Brotli (Wikipedia)	brotli	brotli -q 11	109293 bytes	-16308 bytes (-12.98%)
LZMA2 (Wikipedia)	xz	xz -9	111256 bytes	-14345 bytes (-11.42%)
Zstandard (Wikipedia)	zstd	zstd -19	114641 bytes	-10960 bytes (-8.73%)

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):

Load and Parse Data

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 2024.
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

All trademarks are property of their respective owners. You know, the boring legal stuff.