AngularJS 0.9.16 - as small as it gets (near-perfect GZIP compression)

Choose a version:

The original file has 336738 bytes (328.8k) and is available from the project website.
There you can find the official minified version, too, which brings down the size to 61313 bytes (59.9k, 18%).

After GZIP compression these minified files vary in size:

Boot	27694 bytes (27.0k)	CDN
Baidu	24961 bytes (24.4k)	CDN
cdnjs	24899 bytes (24.3k)	CDN
gzip -6 (default)	24783 bytes (24.2k)	local copy
gzip -9	24734 bytes (24.2k)	local copy
libdeflate -12	24161 bytes (23.6k)	local copy
7zip -mx=9 -tgzip	23932 bytes (23.4k)	local copy
zultra	23795 bytes (23.2k)	local copy
kzip -s0 -rn -b4	23785 bytes (23.2k)	local copy
pigz -11 -n	23746 bytes (23.2k)	local copy
Zopfli	23720 bytes (23.2k)	local copy

perma-link to the smallest file on my server:
http://minime.stephan-brumme.com/files/angularjs/angular-0.9.16.min.js (or via HTTPS)

You will automatically get the smallest AngularJS 0.9.16 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 1179 bytes by using my AngularJS 0.9.16 Zopfli version instead of the best available CDN (4.97% smaller than cdnjs, 23720 vs. 24899 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 --i10000 --mb8 --mls256 --bsr7 --lazy --ohh

(found October 21, 2015)

Description	Value	Parameter
iterations	10000	--i10000
maximum blocks	8	--mb8
maximum length score	256	--mls256
block splitting recursion	7	--bsr7
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

Verify file integrity

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

MD5:
curl --silent --compressed https://code.angularjs.org/0.9.16/angular-0.9.16.min.js --location | md5sum
34481c8a61fcea85565b46f77223d550 -
curl --silent --compressed https://minime.stephan-brumme.com/files/angularjs/angular-0.9.16.min.zopfli.js.gz | md5sum
34481c8a61fcea85565b46f77223d550 -

SHA1:
curl --silent --compressed https://code.angularjs.org/0.9.16/angular-0.9.16.min.js --location | sha1sum
e8ce2d504fcaf5bf7ef2197b43e348ee94a294d1 -
curl --silent --compressed https://minime.stephan-brumme.com/files/angularjs/angular-0.9.16.min.zopfli.js.gz | sha1sum
e8ce2d504fcaf5bf7ef2197b43e348ee94a294d1 -

These CDNs send you the original file:

CDN	Size (compressed)	MD5 (uncompressed)	Timestamp
Boot	27694 bytes	34481c8a61fcea85565b46f77223d550	March 18, 2015 @ 10:03
cdnjs	24899 bytes	34481c8a61fcea85565b46f77223d550	March 28, 2014 @ 14:15

And some CDNs send you a different file:

CDN	Size (compressed)	MD5 (uncompressed)	Comment / Diff	Timestamp
Baidu	24961 bytes	b5e36a56f9999159c9e0cefa911d49fd	only whitespaces differ	June 5, 2014 @ 10:05

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

Other Versions

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

1.8.2, 1.8.1, 1.8.0,
1.7.9, 1.7.8, 1.7.7, 1.7.6, 1.7.5, 1.7.4, 1.7.3, 1.7.2, 1.7.1, 1.7.0,
1.6.10, 1.6.9, 1.6.8, 1.6.7, 1.6.6, 1.6.5, 1.6.4, 1.6.3, 1.6.2, 1.6.1, 1.6.0,
1.5.11, 1.5.10, 1.5.9, 1.5.8, 1.5.7, 1.5.6, 1.5.5, 1.5.4, 1.5.3, 1.5.2, 1.5.1, 1.5.0,
1.4.14, 1.4.13, 1.4.12, 1.4.11, 1.4.10, 1.4.9, 1.4.8, 1.4.7, 1.4.6, 1.4.5, 1.4.4, 1.4.3, 1.4.2, 1.4.1, 1.4.0,
1.3.20, 1.3.19, 1.3.18, 1.3.17, 1.3.16, 1.3.15, 1.3.14, 1.3.13, 1.3.12, 1.3.11, 1.3.10, 1.3.9, 1.3.8, 1.3.7, 1.3.6, 1.3.5, 1.3.4, 1.3.3, 1.3.2, 1.3.1, 1.3.0,
1.2.32, 1.2.31, 1.2.30, 1.2.29, 1.2.28, 1.2.27, 1.2.26, 1.2.25, 1.2.24, 1.2.23, 1.2.22, 1.2.21, 1.2.20, 1.2.19, 1.2.18, 1.2.17, 1.2.16, 1.2.15, 1.2.14, 1.2.13, 1.2.12, 1.2.11, 1.2.10, 1.2.9, 1.2.8, 1.2.7, 1.2.6, 1.2.5, 1.2.4, 1.2.3, 1.2.2, 1.2.1, 1.2.0,
1.1.5, 1.1.4, 1.1.3, 1.1.2, 1.1.1, 1.1.0,
1.0.8, 1.0.7, 1.0.6, 1.0.5, 1.0.4, 1.0.3, 1.0.2, 1.0.1, 1.0.0,
0.10.6, 0.10.5, 0.10.4, 0.10.3, 0.10.2, 0.10.1, 0.10.0,
0.9.19, 0.9.18, 0.9.17, 0.9.16, 0.9.15, 0.9.14, 0.9.13, 0.9.12, 0.9.11, 0.9.10, 0.9.9, 0.9.8, 0.9.7, 0.9.6, 0.9.5, 0.9.4, 0.9.3, 0.9.2, 0.9.1, 0.9.0

The project site contains an overview how well these versions were compressed.
Other interesting projects are BackboneJS, Bootstrap, D3, Dojo, Ember, jQuery, Knockout, lodash, React, Socket.IO, ThreeJS, UnderscoreJS and Vue.

Changelog

Best Zopfli parameters so far:

Size	Improvement	Parameters	Found
23720 bytes	-5 bytes	zopfli --i10000 --mls256 --bsr7 --lazy --ohh	October 21, 2015 @ 12:57
23725 bytes	-2 bytes	zopfli --i1000 --mls256 --bsr7 --lazy --ohh	September 17, 2015 @ 02:22
23727 bytes	-2 bytes	zopfli --i10000 --mls512 --bsr11 --lazy --ohh	September 11, 2015 @ 09:29
23729 bytes	-1 byte	zopfli --i10000 --mls2048 --bsr9 --lazy --ohh	September 11, 2015 @ 09:27
23730 bytes	-1 byte	zopfli --i1000 --mls2048 --bsr10 --lazy --ohh	September 7, 2015 @ 22:06
23731 bytes	-1 byte	zopfli --i1000 --mls512 --bsr11 --lazy --ohh	September 7, 2015 @ 22:05
23732 bytes	-3 bytes	zopfli --i1000 --mls512 --bsr14 --lazy --ohh	September 7, 2015 @ 22:04
23735 bytes	–	zopfli --i100 --mls512 --bsr10 --lazy --ohh	September 7, 2015 @ 16:17

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 @ 12:49.

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
2	23754	23753	23754	23751	23751	23741	23743	23739	23744	23765	23769	23759	23764	23765	23766
4	23730	23730	23727	23730	23728	23756	23756	23751	23754	23749	23742	23744	23750	23738	23755
6	23735	23737	23736	23734	23728	23731	23735	23740	23757	23743	23729	23729	23747	23740	23773
7	23734	23736	23727	23736	23738	23735	23728	23720	23733	23731	23730	23729	23736	23734	23737
8	23730	23728	23729	23728	23733	23727	23730	23733	23739	23744	23734	23732	23735	23737	23752
9	23728	23728	23727	23727	23727	23728	23729	23728	23731	23731	23729	23731	23743	23734	23762
10	23728	23729	23727	23727	23726	23728	23729	23729	23730	23732	23728	23732	23737	23734	23751
11	23739	23729	23728	23729	23740	23728	23740	23740	23727	23731	23733	23734	23734	23734	23752
12	23728	23729	23727	23726	23729	23729	23730	23729	23733	23732	23730	23736	23740	23736	23754
13	23728	23731	23729	23730	23727	23728	23730	23729	23733	23732	23735	23732	23730	23735	23752
14	23739	23749	23738	23727	23726	23733	23740	23729	23731	23732	23731	23732	23739	23735	23752
15	23729	23729	23726	23726	23737	23737	23734	23728	23728	23732	23730	23730	23751	23734	23737
16	23727	23731	23728	23730	23739	23728	23740	23738	23732	23731	23732	23727	23735	23735	23743
17	23730	23730	23727	23729	23726	23728	23730	23727	23728	23731	23735	23729	23750	23734	23752
18	23728	23729	23726	23727	23728	23728	23731	23729	23733	23733	23730	23729	23757	23736	23747
19	23729	23730	23728	23729	23729	23727	23730	23729	23734	23732	23734	23730	23739	23733	23758
20	23730	23729	23728	23727	23727	23728	23730	23730	23732	23734	23730	23732	23740	23736	23757
21	23729	23727	23727	23727	23727	23729	23731	23731	23732	23734	23733	23731	23739	23735	23750
22	23729	23727	23729	23728	23727	23730	23730	23734	23733	23733	23727	23729	23743	23735	23753
23	23729	23730	23729	23727	23727	23729	23730	23732	23732	23733	23730	23734	23739	23734	23739
25	23727	23731	23728	23728	23726	23728	23730	23734	23732	23732	23730	23729	23739	23735	23753
30	23729	23729	23727	23727	23728	23728	23728	23728	23733	23732	23730	23729	23730	23734	23752
40	23727	23731	23729	23729	23729	23728	23731	23729	23733	23731	23729	23730	23740	23735	23748

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	23728 bytes	–	100%
1,000	23725 bytes	-3 bytes	100%
10,000	23720 bytes	-5 bytes	100%
100,000	23720 bytes	–	0.29%
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
(any)	23804 bytes	+84 bytes (+0.35%)	+19 bytes
1	24246 bytes	+526 bytes (+2.22%)	+461 bytes
2	23805 bytes	+85 bytes (+0.36%)	+20 bytes
3	23819 bytes	+99 bytes (+0.42%)	+34 bytes
4	23785 bytes	+65 bytes (+0.27%)	–
5	23811 bytes	+91 bytes (+0.38%)	+26 bytes
6	23845 bytes	+125 bytes (+0.53%)	+60 bytes
7	23866 bytes	+146 bytes (+0.62%)	+81 bytes
8	23873 bytes	+153 bytes (+0.65%)	+88 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	20796 bytes	-2924 bytes (-12.33%)
RAR (proprietary)	RAR	rar a -m5 -md64m -mc63:128t -mt1	21153 bytes	-2567 bytes (-10.82%)
Brotli (Wikipedia)	brotli	brotli -q 11	22007 bytes	-1713 bytes (-7.22%)
PPMd (Wikipedia)	7zip	7za a -mx=9 -m0=ppmd	22293 bytes	-1427 bytes (-6.02%)
LZMA2 (Wikipedia)	xz	xz -9	23328 bytes	-392 bytes (-1.65%)
Burrows-Wheeler transform (Wikipedia)	bzip2	bzip2 -9	23658 bytes	-62 bytes (-0.26%)
Zstandard (Wikipedia)	zstd	zstd -19	24010 bytes	+290 bytes (+1.22%)

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.