Choose a version:
19% The original file has 321482 bytes (313.9k) and is available from the project website.
There you can find the official minified version, too, which brings down the size to 61973 bytes (60.5k, 19%).

After GZIP compression these minified files vary in size:
Boot
  27931 bytes (27.3k)
CDN, direct link
Baidu
  25220 bytes (24.6k)
CDN, direct link
cdnjs
  25149 bytes (24.6k)
CDN, direct link
gzip -6 (default)
  25075 bytes (24.5k)
local copy
cdnhttps
  25053 bytes (24.5k)
CDN, direct link
gzip -9
  25022 bytes (24.4k)
local copy
libdeflate -12
  24606 bytes (24.0k)
local copy
7zip -mx=9 -tgzip
  24377 bytes (23.8k)
local copy
kzip -s0 -rn -b4
  24242 bytes (23.7k)
local copy
pigz -11 -n
  24199 bytes (23.6k)
local copy
Zopfli
  24176 bytes (23.6k)
local copy
Zopfli (defluff)
  24175 bytes (23.6k)
local copy

perma-link to the smallest file on my server:
http://minime.stephan-brumme.com/files/angularjs/angular-0.9.12.min.js

You will automatically get the smallest AngularJS 0.9.12 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 877 bytes by using my AngularJS 0.9.12 Zopfli version instead of the best available CDN (3.63% smaller than cdnhttps, 24176 vs. 25053 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 --mls32768 --bsr19 --lazy --ohh

(found February 5, 2016)
Description Value Parameter
iterations 100000  --i100000
maximum blocks 8  --mb8
maximum length score 32768  --mls32768
block splitting recursion 19  --bsr19
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 (24175 bytes).

Verify file integrity

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

MD5:
curl --silent --compressed https://code.angularjs.org/0.9.12/angular-0.9.12.min.js --location | md5sum
26d2ab0332e9a852acd95948c694ac33  -
curl --silent --compressed http://minime.stephan-brumme.com/files/angularjs/angular-0.9.12.min.zopfli.js.gz | md5sum
26d2ab0332e9a852acd95948c694ac33  -

SHA1:
curl --silent --compressed https://code.angularjs.org/0.9.12/angular-0.9.12.min.js --location | sha1sum
7b376cc27f8f92dca6f9d3824912ffc4aa07e149  -
curl --silent --compressed http://minime.stephan-brumme.com/files/angularjs/angular-0.9.12.min.zopfli.js.gz | sha1sum
7b376cc27f8f92dca6f9d3824912ffc4aa07e149  -

These CDNs send you the original file:
CDN Size (compressed) MD5 (uncompressed) Timestamp
Boot 27931 bytes 26d2ab0332e9a852acd95948c694ac33 March 18, 2015 @ 10:02
cdnjs 25149 bytes 26d2ab0332e9a852acd95948c694ac33 March 28, 2014 @ 14:15
cdnhttps 25053 bytes 26d2ab0332e9a852acd95948c694ac33 December 24, 2015 @ 07:32

And some CDNs send you a different file:
CDN Size (compressed) MD5 (uncompressed) Comment / Diff Timestamp
Baidu 25220 bytes d053bc839364b310d487968cc9155594 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
24176 bytes -1 byte zopfli --i100000 --mls32768 --bsr19 --lazy --ohh February 5, 2016 @ 13:23
24177 bytes -1 byte zopfli --i10000 --mls4096 --bsr10 --lazy --ohh February 3, 2016 @ 11:25
24178 bytes -1 byte zopfli --i10000 --mls32768 --bsr19 --lazy --ohh November 26, 2015 @ 11:14
24179 bytes -1 byte zopfli --i10000 --mls16 --bsr11 --lazy --ohh November 26, 2015 @ 11:12
24180 bytes -1 byte zopfli --i1000 --mls16 --bsr11 --lazy --ohh September 20, 2015 @ 19:19
24181 bytes -2 bytes zopfli --i1000 --mls8192 --bsr4 --lazy --ohh September 7, 2015 @ 22:23
24183 bytes -1 byte zopfli --i1000 --mls4096 --bsr11 --lazy --ohh September 7, 2015 @ 22:21
24184 bytes -2 bytes zopfli --i1000 --mls512 --bsr9 --lazy --ohh September 7, 2015 @ 22:19
24186 bytes zopfli --i100 --mls4096 --bsr10 --lazy --ohh September 7, 2015 @ 16:52

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 @ 14:41.

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
24234 24233 24230 24232 24240 24243 24245 24243 24201 24196 24201 24213 24213 24213 24211
24186 24187 24186 24190 24177 24182 24194 24200 24195 24202 24198 24186 24179 24204 24199
24182 24185 24184 24181 24182 24186 24196 24187 24194 24184 24195 24182 24187 24194 24196
24183 24186 24183 24186 24184 24185 24183 24181 24180 24188 24185 24182 24183 24212 24196
24208 24210 24182 24207 24182 24203 24201 24197 24184 24184 24184 24197 24192 24182 24181
24181 24187 24181 24181 24188 24188 24183 24182 24181 24181 24184 24180 24182 24196 24182
24183 24183 24181 24182 24180 24179 24181 24181 24182 24183 24192 24177 24179 24196 24181
24179 24181 24180 24179 24183 24185 24182 24181 24181 24184 24184 24180 24181 24182 24182
24182 24185 24180 24181 24182 24186 24185 24182 24182 24183 24188 24182 24185 24197 24182
24187 24188 24185 24195 24182 24184 24183 24182 24182 24185 24185 24185 24183 24191 24182
24181 24184 24187 24183 24181 24186 24182 24180 24181 24181 24186 24181 24181 24200 24192
24180 24184 24182 24182 24182 24186 24182 24180 24181 24187 24187 24183 24181 24179 24183
24183 24186 24183 24181 24184 24193 24195 24196 24179 24181 24187 24183 24180 24208 24201
24179 24187 24184 24181 24181 24187 24184 24186 24183 24181 24184 24181 24181 24181 24197
24181 24183 24182 24181 24181 24185 24188 24180 24181 24186 24184 24177 24180 24192 24181
24181 24185 24182 24183 24179 24182 24180 24181 24182 24184 24187 24183 24182 24196 24176
24180 24183 24183 24185 24178 24182 24184 24181 24183 24181 24184 24180 24181 24180 24184
24181 24185 24188 24183 24185 24183 24179 24181 24183 24183 24184 24186 24182 24194 24190
24181 24185 24181 24180 24184 24184 24183 24187 24182 24186 24185 24184 24183 24181 24180
24180 24185 24180 24182 24184 24181 24188 24182 24181 24186 24186 24184 24184 24179 24181
24182 24185 24180 24181 24183 24186 24183 24180 24185 24188 24184 24183 24181 24196 24182
24180 24182 24182 24180 24184 24188 24182 24180 24182 24184 24184 24183 24180 24192 24188
24180 24186 24181 24180 24182 24185 24180 24182 24185 24188 24186 24182 24185 24196 24183

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 24185 bytes 100%
1,000 24180 bytes -5 bytes 100%
10,000 24177 bytes -3 bytes 100%
100,000 24176 bytes -1 byte 1.45%
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
24268 bytes +92 bytes (+0.38%) +26 bytes
24677 bytes +501 bytes (+2.07%) +435 bytes
24268 bytes +92 bytes (+0.38%) +26 bytes
24282 bytes +106 bytes (+0.44%) +40 bytes
24242 bytes +66 bytes (+0.27%)
24270 bytes +94 bytes (+0.39%) +28 bytes
24300 bytes +124 bytes (+0.51%) +58 bytes
24296 bytes +120 bytes (+0.50%) +54 bytes
24301 bytes +125 bytes (+0.52%) +59 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 21086 bytes -3090 bytes (-12.78%)
RAR (proprietary) RAR rar a -m5 -md64m -mc63:128t -mt1 21688 bytes -2488 bytes (-10.29%)
Brotli (Wikipedia) brotli brotli -q 11 22448 bytes -1728 bytes (-7.15%)
PPMd (Wikipedia) 7zip 7za a -mx=9 -m0=ppmd 22821 bytes -1355 bytes (-5.60%)
LZMA2 (Wikipedia) xz xz -9 23700 bytes -476 bytes (-1.97%)
Burrows-Wheeler transform (Wikipedia) bzip2 bzip2 -9 24316 bytes +140 bytes (+0.58%)
ZSTD (Wikipedia) zstd zstd -19 24430 bytes +254 bytes (+1.05%)

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