AngularJS 0.9.3 - as small as it gets (near-perfect GZIP compression)

Choose a version:

The original file has 203745 bytes (199.0k) and is available from the project website.
There you can find the official minified version, too, which brings down the size to 58794 bytes (57.4k, 29%).

After GZIP compression these minified files vary in size:

Boot	26617 bytes (26.0k)	CDN
Baidu	24044 bytes (23.5k)	CDN
cdnjs	23980 bytes (23.4k)	CDN
gzip -6 (default)	23902 bytes (23.3k)	local copy
gzip -9	23870 bytes (23.3k)	local copy
libdeflate -12	23264 bytes (22.7k)	local copy
7zip -mx=9 -tgzip	22998 bytes (22.5k)	local copy
zultra	22935 bytes (22.4k)	local copy
pigz -11 -n	22892 bytes (22.4k)	local copy
kzip -s0 -rn -b3	22885 bytes (22.3k)	local copy
Zopfli	22848 bytes (22.3k)	local copy

perma-link to the smallest file on my server:
http://minime.stephan-brumme.com/files/angularjs/angular-0.9.3.min.js (or via HTTPS)

You will automatically get the smallest AngularJS 0.9.3 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 1132 bytes by using my AngularJS 0.9.3 Zopfli version instead of the best available CDN (4.95% smaller than cdnjs, 22848 vs. 23980 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 --mls32768 --bsr23 --lazy --ohh

(found February 4, 2016)

Description	Value	Parameter
iterations	100000	--i100000
maximum blocks	8	--mb8
maximum length score	32768	--mls32768
block splitting recursion	23	--bsr23
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/0.9.3/angular-0.9.3.min.js --location | md5sum
bafc2d898aea59dde90681fc605a1ce4 -
curl --silent --compressed https://minime.stephan-brumme.com/files/angularjs/angular-0.9.3.min.zopfli.js.gz | md5sum
bafc2d898aea59dde90681fc605a1ce4 -

SHA1:
curl --silent --compressed https://code.angularjs.org/0.9.3/angular-0.9.3.min.js --location | sha1sum
3d843e580fe890343071da28bf6f6cc19f70e6ff -
curl --silent --compressed https://minime.stephan-brumme.com/files/angularjs/angular-0.9.3.min.zopfli.js.gz | sha1sum
3d843e580fe890343071da28bf6f6cc19f70e6ff -

These CDNs send you the original file:

CDN	Size (compressed)	MD5 (uncompressed)	Timestamp
Boot	26617 bytes	bafc2d898aea59dde90681fc605a1ce4	March 18, 2015 @ 10:05
cdnjs	23980 bytes	bafc2d898aea59dde90681fc605a1ce4	March 28, 2014 @ 14:15

And some CDNs send you a different file:

CDN	Size (compressed)	MD5 (uncompressed)	Comment / Diff	Timestamp
Baidu	24044 bytes	2dda2dd1e442091a6dfb21c08a683a75	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
22848 bytes	-5 bytes	zopfli --i100000 --mls32768 --bsr23 --lazy --ohh	February 4, 2016 @ 14:16
22853 bytes	-3 bytes	zopfli --i10000 --mls32768 --bsr23 --lazy --ohh	November 26, 2015 @ 10:54
22856 bytes	-4 bytes	zopfli --i1000 --mls32768 --bsr23 --lazy --ohh	September 23, 2015 @ 23:58
22860 bytes	-4 bytes	zopfli --i1000 --mls4096 --bsr16 --lazy --ohh	September 7, 2015 @ 21:51
22864 bytes	-1 byte	zopfli --i1000 --mls4096 --bsr10 --lazy --ohh	September 7, 2015 @ 21:50
22865 bytes	-3 bytes	zopfli --i1000 --mls2048 --bsr9 --lazy --ohh	September 7, 2015 @ 21:49
22868 bytes	–	zopfli --i100 --mls4096 --bsr16 --lazy --ohh	September 7, 2015 @ 17:01

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	22883	22879	22884	22875	22879	22884	22885	22891	22899	22901	22893	22890	22891	22900	22882
4	22871	22893	22870	22897	22893	22883	22880	22882	22880	22875	22873	22867	22866	22876	22878
6	22883	22876	22880	22882	22896	22876	22873	22876	22874	22872	22864	22880	22870	22877	22885
7	22869	22874	22871	22870	22862	22864	22881	22881	22887	22870	22862	22862	22882	22875	22874
8	22876	22864	22870	22871	22867	22866	22882	22880	22877	22872	22877	22878	22863	22881	22852
9	22872	22868	22873	22869	22876	22877	22877	22865	22876	22869	22861	22864	22860	22874	22880
10	22872	22871	22869	22869	22866	22864	22873	22867	22874	22874	22863	22862	22866	22875	22876
11	22880	22869	22868	22870	22873	22864	22874	22880	22873	22870	22865	22864	22871	22874	22878
12	22871	22865	22869	22870	22862	22866	22875	22863	22873	22869	22865	22865	22861	22881	22880
13	22874	22866	22874	22870	22870	22876	22872	22881	22878	22863	22865	22864	22862	22879	22877
14	22869	22865	22868	22869	22880	22865	22872	22882	22878	22869	22864	22864	22860	22877	22878
15	22876	22877	22873	22872	22862	22864	22874	22865	22874	22869	22864	22864	22861	22873	22878
16	22874	22874	22872	22869	22872	22872	22874	22867	22873	22873	22863	22856	22872	22881	22879
17	22873	22869	22868	22869	22872	22872	22872	22880	22876	22863	22865	22864	22861	22875	22880
18	22872	22875	22874	22869	22872	22864	22875	22872	22872	22875	22865	22865	22863	22883	22878
19	22869	22870	22872	22872	22874	22861	22876	22868	22872	22869	22865	22872	22870	22875	22877
20	22873	22876	22869	22879	22882	22871	22872	22862	22874	22878	22863	22864	22863	22875	22877
21	22869	22875	22873	22870	22872	22878	22878	22872	22871	22877	22864	22862	22860	22871	22884
22	22869	22868	22868	22870	22864	22873	22875	22871	22872	22875	22864	22873	22861	22871	22876
23	22870	22868	22869	22870	22861	22862	22875	22873	22872	22863	22862	22865	22871	22874	22848
25	22874	22865	22869	22868	22869	22864	22877	22871	22874	22864	22862	22865	22863	22875	22880
30	22869	22865	22876	22868	22874	22878	22873	22872	22871	22866	22864	22864	22861	22874	22877
40	22874	22871	22871	22873	22874	22876	22875	22872	22874	22862	22865	22866	22873	22876	22878

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	22866 bytes	–	100%
1,000	22856 bytes	-10 bytes	100%
10,000	22853 bytes	-3 bytes	100%
100,000	22848 bytes	-5 bytes	0.87%
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)	22941 bytes	+93 bytes (+0.41%)	+56 bytes
1	23346 bytes	+498 bytes (+2.18%)	+461 bytes
2	22941 bytes	+93 bytes (+0.41%)	+56 bytes
3	22885 bytes	+37 bytes (+0.16%)	–
4	22900 bytes	+52 bytes (+0.23%)	+15 bytes
5	22910 bytes	+62 bytes (+0.27%)	+25 bytes
6	22923 bytes	+75 bytes (+0.33%)	+38 bytes
7	22954 bytes	+106 bytes (+0.46%)	+69 bytes
8	22989 bytes	+141 bytes (+0.62%)	+104 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	20047 bytes	-2801 bytes (-12.26%)
RAR (proprietary)	RAR	rar a -m5 -md64m -mc63:128t -mt1	20584 bytes	-2264 bytes (-9.91%)
Brotli (Wikipedia)	brotli	brotli -q 11	21160 bytes	-1688 bytes (-7.39%)
PPMd (Wikipedia)	7zip	7za a -mx=9 -m0=ppmd	21650 bytes	-1198 bytes (-5.24%)
LZMA2 (Wikipedia)	xz	xz -9	22436 bytes	-412 bytes (-1.80%)
Burrows-Wheeler transform (Wikipedia)	bzip2	bzip2 -9	23047 bytes	+199 bytes (+0.87%)
Zstandard (Wikipedia)	zstd	zstd -19	23111 bytes	+263 bytes (+1.15%)

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.