AngularJS 0.9.6 - as small as it gets (near-perfect GZIP compression)

Choose a version:

The original file has 272237 bytes (265.9k) and is available from the project website.
There you can find the official minified version, too, which brings down the size to 58567 bytes (57.2k, 22%).

After GZIP compression these minified files vary in size:

Boot	26555 bytes (25.9k)	CDN
Baidu	24050 bytes (23.5k)	CDN
cdnjs	23976 bytes (23.4k)	CDN
gzip -6 (default)	23906 bytes (23.3k)	local copy
gzip -9	23868 bytes (23.3k)	local copy
libdeflate -12	23279 bytes (22.7k)	local copy
7zip -mx=9 -tgzip	23018 bytes (22.5k)	local copy
zultra	22947 bytes (22.4k)	local copy
kzip -s0 -rn -b3	22905 bytes (22.4k)	local copy
pigz -11 -n	22895 bytes (22.4k)	local copy
Zopfli	22869 bytes (22.3k)	local copy
Zopfli (defluff)	22868 bytes (22.3k)	local copy

perma-link to the smallest file on my server:
http://minime.stephan-brumme.com/files/angularjs/angular-0.9.6.min.js (or via HTTPS)

You will automatically get the smallest AngularJS 0.9.6 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 1107 bytes by using my AngularJS 0.9.6 Zopfli version instead of the best available CDN (4.84% smaller than cdnjs, 22869 vs. 23976 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 --bsr16 --lazy --ohh

(found February 5, 2016)

Description	Value	Parameter
iterations	100000	--i100000
maximum blocks	8	--mb8
maximum length score	256	--mls256
block splitting recursion	16	--bsr16
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 1 more byte (22868 bytes).

Download

Verify file integrity

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

MD5:
curl --silent --compressed https://code.angularjs.org/0.9.6/angular-0.9.6.min.js --location | md5sum
17ab5bd556a882736ef3d1524ffe6aea -
curl --silent --compressed https://minime.stephan-brumme.com/files/angularjs/angular-0.9.6.min.zopfli.js.gz | md5sum
17ab5bd556a882736ef3d1524ffe6aea -

SHA1:
curl --silent --compressed https://code.angularjs.org/0.9.6/angular-0.9.6.min.js --location | sha1sum
c21e0dfefc50726aae297f24694cab3fc65ead1e -
curl --silent --compressed https://minime.stephan-brumme.com/files/angularjs/angular-0.9.6.min.zopfli.js.gz | sha1sum
c21e0dfefc50726aae297f24694cab3fc65ead1e -

These CDNs send you the original file:

CDN	Size (compressed)	MD5 (uncompressed)	Timestamp
Boot	26555 bytes	17ab5bd556a882736ef3d1524ffe6aea	March 18, 2015 @ 10:06
cdnjs	23976 bytes	17ab5bd556a882736ef3d1524ffe6aea	March 28, 2014 @ 14:15

And some CDNs send you a different file:

CDN	Size (compressed)	MD5 (uncompressed)	Comment / Diff	Timestamp
Baidu	24050 bytes	cc287f320d7d77e471bcbfa0a03dea4e	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
22869 bytes	-1 byte	zopfli --i100000 --mls256 --bsr16 --lazy --ohh	February 5, 2016 @ 07:53
22870 bytes	-1 byte	zopfli --i10000 --mls256 --bsr10 --lazy --ohh	November 26, 2015 @ 10:56
22871 bytes	-6 bytes	zopfli --i1000 --mls256 --bsr11 --lazy --ohh	September 17, 2015 @ 04:38
22877 bytes	-2 bytes	zopfli --i1000 --mls4096 --bsr11 --lazy --ohh	September 7, 2015 @ 21:39
22879 bytes	-1 byte	zopfli --i1000 --mls1024 --bsr14 --lazy --ohh	September 7, 2015 @ 21:37
22880 bytes	-10 bytes	zopfli --i1000 --mls512 --bsr6 --lazy --ohh	September 7, 2015 @ 21:36
22890 bytes	–	zopfli --i100 --mls4096 --bsr11 --lazy --ohh	September 7, 2015 @ 16:27

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 @ 12:56.

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	22901	22907	22903	22895	22897	22901	22901	22924	22895	22910	22911	22907	22908	22916	22913
4	22878	22881	22904	22881	22904	22901	22901	22897	22897	22897	22883	22877	22882	22898	22899
6	22882	22886	22884	22887	22892	22877	22880	22881	22879	22881	22879	22880	22887	22881	22888
7	22885	22879	22887	22879	22877	22879	22883	22882	22894	22895	22879	22878	22882	22897	22890
8	22883	22883	22877	22881	22886	22877	22881	22892	22880	22883	22892	22878	22882	22897	22896
9	22878	22883	22876	22880	22877	22877	22880	22876	22885	22879	22881	22878	22882	22887	22883
10	22885	22884	22877	22880	22877	22877	22880	22869	22882	22878	22878	22881	22881	22883	22885
11	22879	22882	22876	22879	22881	22878	22880	22869	22880	22879	22880	22876	22882	22892	22882
12	22881	22878	22882	22879	22877	22881	22881	22880	22888	22885	22879	22878	22881	22881	22897
13	22879	22879	22878	22879	22878	22880	22880	22880	22883	22880	22883	22877	22882	22910	22887
14	22880	22882	22878	22878	22881	22880	22881	22883	22882	22878	22879	22878	22893	22885	22884
15	22879	22887	22886	22883	22881	22880	22879	22881	22880	22884	22879	22878	22884	22903	22883
16	22879	22883	22879	22880	22880	22881	22879	22869	22879	22879	22881	22878	22882	22902	22884
17	22880	22883	22877	22879	22877	22877	22880	22881	22881	22881	22881	22879	22881	22883	22885
18	22882	22903	22878	22878	22878	22877	22880	22883	22879	22878	22879	22877	22881	22906	22885
19	22879	22881	22879	22881	22877	22880	22880	22883	22882	22879	22879	22880	22882	22904	22885
20	22880	22878	22877	22879	22877	22881	22880	22882	22881	22880	22880	22877	22883	22887	22887
21	22883	22888	22877	22880	22879	22879	22881	22880	22881	22880	22880	22877	22884	22905	22883
22	22879	22880	22880	22878	22877	22878	22881	22878	22879	22881	22880	22878	22881	22882	22885
23	22879	22879	22881	22879	22881	22880	22879	22880	22882	22882	22879	22877	22883	22881	22886
25	22882	22882	22879	22879	22877	22878	22880	22870	22880	22880	22881	22878	22881	22882	22883
30	22882	22879	22878	22879	22878	22878	22880	22882	22880	22881	22881	22878	22882	22883	22885
40	22880	22882	22878	22878	22878	22877	22880	22883	22880	22879	22879	22877	22881	22898	22884

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	22881 bytes	–	100%
1,000	22871 bytes	-10 bytes	100%
10,000	22870 bytes	-1 byte	100%
100,000	22869 bytes	-1 byte	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
(any)	22961 bytes	+92 bytes (+0.40%)	+56 bytes
1	23360 bytes	+491 bytes (+2.15%)	+455 bytes
2	22961 bytes	+92 bytes (+0.40%)	+56 bytes
3	22905 bytes	+36 bytes (+0.16%)	–
4	22918 bytes	+49 bytes (+0.21%)	+13 bytes
5	22948 bytes	+79 bytes (+0.35%)	+43 bytes
6	22983 bytes	+114 bytes (+0.50%)	+78 bytes
7	22987 bytes	+118 bytes (+0.52%)	+82 bytes
8	23014 bytes	+145 bytes (+0.63%)	+109 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	20107 bytes	-2762 bytes (-12.08%)
RAR (proprietary)	RAR	rar a -m5 -md64m -mc63:128t -mt1	20624 bytes	-2245 bytes (-9.82%)
Brotli (Wikipedia)	brotli	brotli -q 11	21217 bytes	-1652 bytes (-7.22%)
PPMd (Wikipedia)	7zip	7za a -mx=9 -m0=ppmd	21623 bytes	-1246 bytes (-5.45%)
LZMA2 (Wikipedia)	xz	xz -9	22472 bytes	-397 bytes (-1.74%)
Burrows-Wheeler transform (Wikipedia)	bzip2	bzip2 -9	23112 bytes	+243 bytes (+1.06%)
Zstandard (Wikipedia)	zstd	zstd -19	23135 bytes	+266 bytes (+1.16%)

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 2026.
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.