AngularJS 0.9.9 - as small as it gets (near-perfect GZIP compression)

Choose a version:

The original file has 279677 bytes (273.1k) and is available from the project website.
There you can find the official minified version, too, which brings down the size to 59197 bytes (57.8k, 21%).

After GZIP compression these minified files vary in size:

Boot	26911 bytes (26.3k)	CDN
Baidu	24334 bytes (23.8k)	CDN
cdnjs	24265 bytes (23.7k)	CDN
gzip -6 (default)	24191 bytes (23.6k)	local copy
gzip -9	24143 bytes (23.6k)	local copy
libdeflate -12	23602 bytes (23.0k)	local copy
7zip -mx=9 -tgzip	23324 bytes (22.8k)	local copy
zultra	23234 bytes (22.7k)	local copy
kzip -s0 -rn -b3	23212 bytes (22.7k)	local copy
pigz -11 -n	23209 bytes (22.7k)	local copy
Zopfli	23178 bytes (22.6k)	local copy

perma-link to the smallest file on my server:
http://minime.stephan-brumme.com/files/angularjs/angular-0.9.9.min.js (or via HTTPS)

You will automatically get the smallest AngularJS 0.9.9 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 1087 bytes by using my AngularJS 0.9.9 Zopfli version instead of the best available CDN (4.69% smaller than cdnjs, 23178 vs. 24265 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/0.9.9/angular-0.9.9.min.js --location | md5sum
9c9d09d37d019f0350edd97ae54dc94b -
curl --silent --compressed https://minime.stephan-brumme.com/files/angularjs/angular-0.9.9.min.zopfli.js.gz | md5sum
9c9d09d37d019f0350edd97ae54dc94b -

SHA1:
curl --silent --compressed https://code.angularjs.org/0.9.9/angular-0.9.9.min.js --location | sha1sum
f754b344d80f3e8782fd78dba59d87b74e89a687 -
curl --silent --compressed https://minime.stephan-brumme.com/files/angularjs/angular-0.9.9.min.zopfli.js.gz | sha1sum
f754b344d80f3e8782fd78dba59d87b74e89a687 -

These CDNs send you the original file:

CDN	Size (compressed)	MD5 (uncompressed)	Timestamp
Boot	26911 bytes	9c9d09d37d019f0350edd97ae54dc94b	March 18, 2015 @ 10:06
cdnjs	24265 bytes	9c9d09d37d019f0350edd97ae54dc94b	March 28, 2014 @ 14:15

And some CDNs send you a different file:

CDN	Size (compressed)	MD5 (uncompressed)	Comment / Diff	Timestamp
Baidu	24334 bytes	a00e31e40a1b9458c9e7c787b681180e	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
23178 bytes	-2 bytes	zopfli --i100000 --mls256 --bsr9 --lazy --ohh	February 5, 2016 @ 10:59
23180 bytes	-3 bytes	zopfli --i10000 --mls256 --bsr9 --lazy --ohh	November 26, 2015 @ 11:04
23183 bytes	-1 byte	zopfli --i1000 --mls256 --bsr9 --lazy --ohh	September 17, 2015 @ 03:58
23184 bytes	-3 bytes	zopfli --i1000 --mls256 --bsr12 --lazy --ohh	September 17, 2015 @ 03:57
23187 bytes	-3 bytes	zopfli --i1000 --mls2048 --bsr10 --lazy --ohh	September 7, 2015 @ 21:30
23190 bytes	-2 bytes	zopfli --i1000 --mls512 --bsr16 --lazy --ohh	September 7, 2015 @ 21:29
23192 bytes	-7 bytes	zopfli --i1000 --mls512 --bsr9 --lazy --ohh	September 7, 2015 @ 21:28
23199 bytes	–	zopfli --i100 --mls2048 --bsr13 --lazy --ohh	September 7, 2015 @ 16:20

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	23217	23214	23214	23217	23217	23211	23209	23216	23206	23195	23199	23198	23223	23224	23206
4	23204	23206	23207	23215	23215	23220	23204	23213	23208	23202	23205	23194	23204	23190	23196
6	23194	23193	23192	23192	23190	23198	23200	23208	23187	23190	23191	23204	23206	23189	23189
7	23191	23191	23191	23197	23202	23196	23192	23190	23188	23200	23208	23193	23201	23220	23191
8	23189	23190	23189	23191	23190	23191	23192	23200	23194	23190	23189	23192	23190	23188	23207
9	23190	23190	23203	23191	23201	23190	23187	23178	23189	23193	23191	23192	23191	23191	23192
10	23189	23192	23191	23193	23187	23194	23191	23179	23189	23190	23185	23193	23186	23186	23190
11	23192	23191	23191	23189	23192	23195	23190	23187	23189	23191	23186	23193	23186	23190	23189
12	23189	23191	23191	23192	23191	23188	23187	23178	23187	23194	23192	23191	23189	23188	23190
13	23192	23192	23191	23192	23192	23188	23190	23190	23190	23191	23187	23190	23189	23193	23190
14	23191	23191	23191	23192	23191	23189	23188	23193	23195	23188	23188	23193	23197	23193	23191
15	23189	23189	23190	23197	23192	23193	23191	23189	23189	23191	23191	23189	23193	23190	23192
16	23191	23193	23192	23194	23191	23189	23190	23189	23188	23190	23187	23194	23190	23192	23190
17	23194	23193	23196	23193	23191	23188	23189	23179	23183	23192	23191	23189	23188	23189	23191
18	23192	23191	23192	23196	23193	23193	23188	23192	23187	23188	23206	23189	23190	23189	23190
19	23187	23192	23193	23192	23194	23195	23188	23183	23187	23191	23190	23189	23188	23191	23192
20	23192	23193	23194	23194	23191	23195	23186	23187	23190	23186	23188	23194	23192	23188	23192
21	23191	23191	23192	23193	23194	23192	23190	23193	23190	23190	23194	23190	23186	23202	23193
22	23190	23188	23193	23192	23193	23188	23190	23191	23188	23191	23189	23192	23192	23194	23191
23	23191	23191	23189	23192	23191	23196	23190	23182	23189	23191	23189	23189	23193	23188	23192
25	23191	23190	23190	23192	23190	23190	23190	23190	23189	23191	23189	23189	23186	23188	23193
30	23189	23192	23191	23192	23191	23188	23189	23193	23188	23189	23187	23189	23186	23189	23189
40	23189	23190	23190	23191	23191	23193	23190	23190	23189	23188	23191	23193	23189	23187	23191

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	23191 bytes	–	100%
1,000	23183 bytes	-8 bytes	100%
10,000	23180 bytes	-3 bytes	100%
100,000	23178 bytes	-2 bytes	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)	23271 bytes	+93 bytes (+0.40%)	+59 bytes
1	23678 bytes	+500 bytes (+2.16%)	+466 bytes
2	23272 bytes	+94 bytes (+0.41%)	+60 bytes
3	23212 bytes	+34 bytes (+0.15%)	–
4	23229 bytes	+51 bytes (+0.22%)	+17 bytes
5	23233 bytes	+55 bytes (+0.24%)	+21 bytes
6	23254 bytes	+76 bytes (+0.33%)	+42 bytes
7	23286 bytes	+108 bytes (+0.47%)	+74 bytes
8	23325 bytes	+147 bytes (+0.63%)	+113 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	20310 bytes	-2868 bytes (-12.37%)
RAR (proprietary)	RAR	rar a -m5 -md64m -mc63:128t -mt1	20881 bytes	-2297 bytes (-9.91%)
Brotli (Wikipedia)	brotli	brotli -q 11	21478 bytes	-1700 bytes (-7.33%)
PPMd (Wikipedia)	7zip	7za a -mx=9 -m0=ppmd	21901 bytes	-1277 bytes (-5.51%)
LZMA2 (Wikipedia)	xz	xz -9	22796 bytes	-382 bytes (-1.65%)
Burrows-Wheeler transform (Wikipedia)	bzip2	bzip2 -9	23348 bytes	+170 bytes (+0.73%)
Zstandard (Wikipedia)	zstd	zstd -19	23455 bytes	+277 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 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.