Choose a version:
42% The original file has 129586 bytes (126.5k) and is available from the project website.
There you can find the official minified version, too, which brings down the size to 54371 bytes (53.1k, 42%).

After GZIP compression these minified files vary in size:
Boot
  24523 bytes (23.9k)
CDN, direct link
Baidu
  22103 bytes (21.6k)
CDN, direct link
cdnjs
  22044 bytes (21.5k)
CDN, direct link
gzip -6 (default)
  21936 bytes (21.4k)
local copy
cdnhttps
  21915 bytes (21.4k)
CDN, direct link
gzip -9
  21897 bytes (21.4k)
local copy
libdeflate -12
  21294 bytes (20.8k)
local copy
7zip -mx=9 -tgzip
  21040 bytes (20.5k)
local copy
kzip -s0 -rn -b4
  20926 bytes (20.4k)
local copy
pigz -11 -n
  20912 bytes (20.4k)
local copy
Zopfli
  20896 bytes (20.4k)
local copy
Zopfli (defluff)
  20895 bytes (20.4k)
local copy

perma-link to the smallest file on my server:
http://minime.stephan-brumme.com/files/angularjs/angular-0.9.0.min.js

You will automatically get the smallest AngularJS 0.9.0 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 1019 bytes by using my AngularJS 0.9.0 Zopfli version instead of the best available CDN (4.88% smaller than cdnhttps, 20896 vs. 21915 bytes):
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 --bsr11 --lazy --ohh

(found November 26, 2015)
Description Value Parameter
iterations 100000  --i100000
maximum blocks 8  --mb8
maximum length score 256  --mls256
block splitting recursion 11  --bsr11
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 (20895 bytes).

Verify file integrity

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

MD5:
curl --silent --compressed https://code.angularjs.org/0.9.0/angular-0.9.0.min.js --location | md5sum
f320e526b50a0ef14dc54b1cb93ed038  -
curl --silent --compressed http://minime.stephan-brumme.com/files/angularjs/angular-0.9.0.min.zopfli.js.gz | md5sum
f320e526b50a0ef14dc54b1cb93ed038  -

SHA1:
curl --silent --compressed https://code.angularjs.org/0.9.0/angular-0.9.0.min.js --location | sha1sum
4ea86274f66e5bc39b85d2373046b91869c2ce61  -
curl --silent --compressed http://minime.stephan-brumme.com/files/angularjs/angular-0.9.0.min.zopfli.js.gz | sha1sum
4ea86274f66e5bc39b85d2373046b91869c2ce61  -

These CDNs send you the original file:
CDN Size (compressed) MD5 (uncompressed) Timestamp
Boot 24523 bytes f320e526b50a0ef14dc54b1cb93ed038 March 18, 2015 @ 10:01
cdnjs 22044 bytes f320e526b50a0ef14dc54b1cb93ed038 March 28, 2014 @ 14:15
cdnhttps 21915 bytes f320e526b50a0ef14dc54b1cb93ed038 December 24, 2015 @ 07:32

And some CDNs send you a different file:
CDN Size (compressed) MD5 (uncompressed) Comment / Diff Timestamp
Baidu 22103 bytes b773b6a291577d200afed61f6ca37f3e 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:

1.6.5, 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
20896 bytes -1 byte zopfli --i100000 --mls256 --bsr11 --lazy --ohh November 26, 2015 @ 10:58
20897 bytes -2 bytes zopfli --i10000 --mls256 --bsr11 --lazy --ohh September 24, 2015 @ 10:25
20899 bytes -1 byte zopfli --i1000 --mls256 --bsr11 --lazy --ohh September 17, 2015 @ 05:51
20900 bytes -2 bytes zopfli --i1000 --mls8192 --bsr8 --lazy --ohh September 7, 2015 @ 22:38
20902 bytes -1 byte zopfli --i1000 --mls512 --bsr10 --lazy --ohh September 7, 2015 @ 22:35
20903 bytes zopfli --i100 --mls512 --bsr14 --lazy --ohh September 7, 2015 @ 16:16

If there are multiple parameter sets yielding the same compressed size, only the first one found is shown.

Most recent activity on June 16, 2016 @ 14:35.

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
20932 20933 20933 20932 20928 20929 20932 20929 20930 20930 20922 20930 20914 20933 20958
20906 20905 20904 20906 20906 20905 20904 20906 20900 20912 20915 20906 20915 20927 20924
20908 20905 20907 20903 20900 20898 20930 20898 20899 20901 20899 20909 20922 20942 20932
20922 20902 20919 20921 20902 20899 20900 20898 20899 20920 20902 20904 20900 20937 20928
20898 20898 20900 20899 20898 20899 20900 20898 20906 20903 20899 20901 20899 20924 20920
20896 20903 20899 20905 20901 20899 20900 20900 20902 20901 20904 20901 20917 20923 20916
20896 20898 20898 20899 20900 20898 20900 20900 20898 20901 20901 20926 20899 20924 20913
20898 20899 20898 20900 20899 20898 20899 20896 20899 20902 20900 20903 20901 20926 20916
20898 20898 20898 20899 20899 20898 20901 20901 20904 20901 20900 20902 20899 20927 20913
20900 20899 20901 20900 20899 20900 20904 20901 20904 20904 20903 20901 20900 20924 20913
20906 20907 20908 20899 20898 20898 20901 20900 20898 20902 20901 20901 20899 20917 20930
20898 20896 20901 20899 20898 20899 20900 20898 20896 20899 20901 20901 20900 20917 20919
20898 20899 20898 20900 20899 20904 20907 20903 20903 20901 20902 20925 20901 20923 20915
20896 20896 20901 20899 20898 20902 20901 20901 20899 20900 20902 20901 20900 20925 20915
20896 20898 20900 20898 20900 20899 20901 20902 20900 20903 20914 20900 20899 20931 20917
20898 20899 20898 20899 20898 20902 20904 20902 20898 20901 20901 20900 20900 20924 20935
20898 20896 20899 20900 20900 20899 20901 20902 20900 20899 20903 20899 20925 20916 20915
20903 20903 20904 20900 20901 20899 20902 20902 20900 20902 20899 20900 20924 20926 20915
20909 20899 20899 20913 20902 20899 20902 20903 20898 20902 20902 20902 20900 20925 20913
20898 20899 20898 20902 20900 20898 20900 20899 20899 20900 20901 20900 20916 20924 20916
20898 20898 20899 20916 20898 20899 20902 20901 20899 20901 20900 20900 20908 20924 20916
20898 20896 20901 20900 20899 20900 20901 20897 20898 20901 20902 20901 20900 20924 20915
20899 20901 20900 20899 20898 20899 20902 20902 20899 20900 20902 20901 20900 20924 20915

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 20903 bytes 100%
1,000 20899 bytes -4 bytes 100%
10,000 20897 bytes -2 bytes 100%
100,000 20896 bytes -1 byte 3.19%
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
20977 bytes +81 bytes (+0.39%) +51 bytes
21376 bytes +480 bytes (+2.30%) +450 bytes
20977 bytes +81 bytes (+0.39%) +51 bytes
20992 bytes +96 bytes (+0.46%) +66 bytes
20926 bytes +30 bytes (+0.14%)
20947 bytes +51 bytes (+0.24%) +21 bytes
20988 bytes +92 bytes (+0.44%) +62 bytes
21019 bytes +123 bytes (+0.59%) +93 bytes
21048 bytes +152 bytes (+0.73%) +122 bytes

Non-DEFLATE Algorithms

Archivers based on completely different compression algorithms often produce superior results.
Unfortunately, browsers only support gzip compression at the moment.
Algorithm Program Parameters Size Compared To Best Zopfli
ZPAQ (Wikipedia) zpaq zpaq -method 69 18498 bytes -2398 bytes (-11.48%)
RAR (proprietary) RAR rar a -m5 -md64m -mc63:128t -mt1 18872 bytes -2024 bytes (-9.69%)
Brotli (Wikipedia) brotli brotli -q 11 19383 bytes -1513 bytes (-7.24%)
PPMd (Wikipedia) 7zip 7za a -mx=9 -m0=ppmd 19717 bytes -1179 bytes (-5.64%)
LZMA2 (Wikipedia) xz xz -9 20572 bytes -324 bytes (-1.55%)
ZSTD (Wikipedia) zstd zstd -19 21148 bytes +252 bytes (+1.21%)
Burrows-Wheeler transform (Wikipedia) bzip2 bzip2 -9 21167 bytes +271 bytes (+1.30%)

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):


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 2017.
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