AngularJS 0.9.7 - as small as it gets (near-perfect GZIP compression)

Choose a version:

The original file has 271204 bytes (264.8k) and is available from the project website.
There you can find the official minified version, too, which brings down the size to 58004 bytes (56.6k, 21%).

After GZIP compression these minified files vary in size:

Boot	26486 bytes (25.9k)	CDN
Baidu	23956 bytes (23.4k)	CDN
cdnjs	23894 bytes (23.3k)	CDN
gzip -6 (default)	23814 bytes (23.3k)	local copy
gzip -9	23779 bytes (23.2k)	local copy
libdeflate -12	23190 bytes (22.6k)	local copy
7zip -mx=9 -tgzip	22886 bytes (22.3k)	local copy
zultra	22837 bytes (22.3k)	local copy
kzip -s0 -rn -b4	22822 bytes (22.3k)	local copy
pigz -11 -n	22790 bytes (22.3k)	local copy
Zopfli	22764 bytes (22.2k)	local copy

perma-link to the smallest file on my server:
http://minime.stephan-brumme.com/files/angularjs/angular-0.9.7.min.js (or via HTTPS)

You will automatically get the smallest AngularJS 0.9.7 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 1130 bytes by using my AngularJS 0.9.7 Zopfli version instead of the best available CDN (4.96% smaller than cdnjs, 22764 vs. 23894 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 --i100000 --mb8 --mls256 --bsr9 --lazy --ohh

(found February 5, 2016)

Description	Value	Parameter
iterations	100000	--i100000
maximum blocks	8	--mb8
maximum length score	256	--mls256
block splitting recursion	9	--bsr9
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/0.9.7/angular-0.9.7.min.js --location | md5sum
692f9780600890da87e99c0688e675e1 -
curl --silent --compressed https://minime.stephan-brumme.com/files/angularjs/angular-0.9.7.min.zopfli.js.gz | md5sum
692f9780600890da87e99c0688e675e1 -

SHA1:
curl --silent --compressed https://code.angularjs.org/0.9.7/angular-0.9.7.min.js --location | sha1sum
4495fb343679366c0a89d806c1a5e72d3c9737da -
curl --silent --compressed https://minime.stephan-brumme.com/files/angularjs/angular-0.9.7.min.zopfli.js.gz | sha1sum
4495fb343679366c0a89d806c1a5e72d3c9737da -

These CDNs send you the original file:

CDN	Size (compressed)	MD5 (uncompressed)	Timestamp
Boot	26486 bytes	692f9780600890da87e99c0688e675e1	March 18, 2015 @ 10:06
cdnjs	23894 bytes	692f9780600890da87e99c0688e675e1	March 28, 2014 @ 14:15

And some CDNs send you a different file:

CDN	Size (compressed)	MD5 (uncompressed)	Comment / Diff	Timestamp
Baidu	23956 bytes	80138b15a6a2ab1cfca3a628c99d8eab	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
22764 bytes	-1 byte	zopfli --i100000 --mls256 --bsr9 --lazy --ohh	February 5, 2016 @ 10:33
22765 bytes	-1 byte	zopfli --i100000 --mls256 --bsr12 --lazy --ohh	February 5, 2016 @ 10:15
22766 bytes	-1 byte	zopfli --i10000 --mls256 --bsr11 --lazy --ohh	November 26, 2015 @ 11:02
22767 bytes	-5 bytes	zopfli --i1000 --mls256 --bsr11 --lazy --ohh	September 17, 2015 @ 04:21
22772 bytes	–	zopfli --i100 --mls256 --bsr10 --lazy --ohh	September 11, 2015 @ 11:04

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 @ 12:48.

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	22808	22797	22795	22789	22794	22799	22797	22812	22792	22811	22801	22797	22802	22808	22808
4	22776	22777	22799	22772	22798	22796	22795	22781	22791	22792	22776	22774	22772	22781	22808
6	22782	22779	22788	22790	22791	22774	22774	22774	22775	22777	22773	22792	22773	22782	22781
7	22784	22791	22785	22782	22777	22776	22779	22776	22784	22774	22775	22772	22792	22807	22783
8	22774	22774	22778	22781	22783	22788	22780	22785	22793	22779	22786	22773	22773	22796	22795
9	22779	22774	22785	22774	22772	22773	22775	22764	22775	22774	22775	22773	22773	22797	22805
10	22771	22774	22777	22780	22773	22773	22775	22764	22773	22774	22772	22779	22772	22794	22782
11	22777	22773	22777	22779	22771	22774	22775	22765	22780	22773	22776	22772	22777	22780	22795
12	22774	22774	22776	22780	22773	22775	22773	22765	22779	22778	22779	22772	22772	22794	22806
13	22772	22774	22771	22780	22773	22780	22776	22782	22779	22776	22777	22773	22774	22795	22802
14	22773	22774	22776	22779	22774	22773	22776	22775	22773	22775	22773	22772	22772	22781	22779
15	22779	22780	22777	22782	22772	22775	22773	22775	22774	22776	22773	22773	22775	22796	22779
16	22772	22774	22777	22774	22775	22776	22775	22764	22774	22773	22775	22772	22772	22794	22782
17	22778	22779	22777	22780	22773	22778	22780	22768	22774	22774	22774	22773	22771	22780	22796
18	22774	22772	22778	22775	22773	22773	22774	22782	22780	22772	22774	22777	22773	22781	22796
19	22778	22775	22777	22780	22774	22775	22773	22777	22776	22772	22774	22774	22771	22781	22795
20	22779	22774	22777	22779	22775	22776	22774	22774	22775	22775	22778	22774	22778	22782	22795
21	22779	22775	22775	22778	22772	22774	22775	22772	22774	22774	22775	22771	22777	22784	22798
22	22778	22775	22777	22781	22773	22775	22774	22774	22773	22775	22774	22772	22778	22779	22782
23	22779	22774	22781	22782	22772	22773	22774	22774	22774	22774	22774	22773	22772	22794	22782
25	22777	22774	22777	22777	22777	22774	22774	22766	22774	22774	22775	22772	22773	22796	22806
30	22777	22772	22776	22779	22773	22773	22775	22775	22774	22775	22774	22772	22772	22780	22784
40	22779	22775	22778	22779	22773	22773	22774	22774	22774	22774	22774	22771	22775	22783	22794

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	22772 bytes	–	100%
1,000	22767 bytes	-5 bytes	100%
10,000	22766 bytes	-1 byte	100%
100,000	22764 bytes	-2 bytes	1.74%
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)	22870 bytes	+106 bytes (+0.47%)	+48 bytes
1	23273 bytes	+509 bytes (+2.24%)	+451 bytes
2	22866 bytes	+102 bytes (+0.45%)	+44 bytes
3	22884 bytes	+120 bytes (+0.53%)	+62 bytes
4	22822 bytes	+58 bytes (+0.25%)	–
5	22851 bytes	+87 bytes (+0.38%)	+29 bytes
6	22885 bytes	+121 bytes (+0.53%)	+63 bytes
7	22915 bytes	+151 bytes (+0.66%)	+93 bytes
8	22927 bytes	+163 bytes (+0.72%)	+105 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 - for example, your browser actually supports it !

Algorithm	Program	Parameters	Size	Compared To Best Zopfli
ZPAQ (Wikipedia)	zpaq	zpaq -method 69	20026 bytes	-2738 bytes (-12.03%)
RAR (proprietary)	RAR	rar a -m5 -md64m -mc63:128t -mt1	20526 bytes	-2238 bytes (-9.83%)
Brotli (Wikipedia)	brotli	brotli -q 11	21106 bytes	-1658 bytes (-7.28%)
PPMd (Wikipedia)	7zip	7za a -mx=9 -m0=ppmd	21481 bytes	-1283 bytes (-5.64%)
LZMA2 (Wikipedia)	xz	xz -9	22356 bytes	-408 bytes (-1.79%)
Burrows-Wheeler transform (Wikipedia)	bzip2	bzip2 -9	22941 bytes	+177 bytes (+0.78%)
Zstandard (Wikipedia)	zstd	zstd -19	23038 bytes	+274 bytes (+1.20%)

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.