Choose a version:
14% The original file has 1092132 bytes (1,066.5k) and is available from the project website.
There you can find the official minified version, too, which brings down the size to 150014 bytes (146.5k, 14%).

After GZIP compression these minified files vary in size:
Boot
  61228 bytes (59.8k)
CDN, direct link
cdnhttps
  53215 bytes (52.0k)
CDN, direct link
cdnjs
  53215 bytes (52.0k)
CDN, direct link
unpkg
  53215 bytes (52.0k)
CDN, direct link
gzip -6 (default)
  53212 bytes (52.0k)
local copy
Google
  53146 bytes (51.9k)
CDN, direct link
gzip -9
  53124 bytes (51.9k)
local copy
7zip -mx=9 -tgzip
  51458 bytes (50.3k)
local copy
kzip -s0 -rn -b1
  51452 bytes (50.2k)
local copy
libdeflate -12
  51448 bytes (50.2k)
local copy
pigz -11 -n
  51409 bytes (50.2k)
local copy
Zopfli
  51315 bytes (50.1k)
local copy
Zopfli (defluff)
  51314 bytes (50.1k)
local copy

perma-link to the smallest file on my server:
http://minime.stephan-brumme.com/files/angularjs/angular-1.4.9.min.js

You will automatically get the smallest AngularJS 1.4.9 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 1831 bytes by using my AngularJS 1.4.9 Zopfli version instead of the best available CDN (3.57% smaller than Google, 51315 vs. 53146 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 --i1000000 --mb8 --mls16384 --bsr11 --lazy --ohh

(found January 22, 2016)
Description Value Parameter
iterations 1000000  --i1000000
maximum blocks 8  --mb8
maximum length score 16384  --mls16384
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 (51314 bytes).

Verify file integrity

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

MD5:
curl --silent --compressed https://code.angularjs.org/1.4.9/angular.min.js --location | md5sum
9324788c75670e5a821cd5d2355f0754  -
curl --silent --compressed http://minime.stephan-brumme.com/files/angularjs/angular-1.4.9.min.zopfli.js.gz | md5sum
9324788c75670e5a821cd5d2355f0754  -

SHA1:
curl --silent --compressed https://code.angularjs.org/1.4.9/angular.min.js --location | sha1sum
d8bd332ad93eca846b34bb8abfc8a5d7dbebeba2  -
curl --silent --compressed http://minime.stephan-brumme.com/files/angularjs/angular-1.4.9.min.zopfli.js.gz | sha1sum
d8bd332ad93eca846b34bb8abfc8a5d7dbebeba2  -

All listed CDNs deliver identical contents:
CDN Size (compressed) MD5 (uncompressed) Timestamp
Boot 61228 bytes 9324788c75670e5a821cd5d2355f0754 January 23, 2016 @ 18:37
cdnhttps 53215 bytes 9324788c75670e5a821cd5d2355f0754 November 22, 2016 @ 16:29
cdnjs 53215 bytes 9324788c75670e5a821cd5d2355f0754 January 22, 2016 @ 08:02
unpkg 53215 bytes 9324788c75670e5a821cd5d2355f0754 July 11, 2016 @ 15:52
Google 53146 bytes 9324788c75670e5a821cd5d2355f0754 January 21, 2016 @ 15:25

Note: only the MD5 hashes are shown to keep things simple.

Other Versions

Available AngularJS versions at minime.stephan-brumme.com:

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
51315 bytes -4 bytes zopfli --i1000000 --mls16384 --bsr11 --lazy --ohh January 22, 2016 @ 22:39
51319 bytes -2 bytes zopfli --i100000 --mls2 --bsr19 --lazy --ohh January 22, 2016 @ 11:56
51321 bytes -6 bytes zopfli --i10000 --mls2 --bsr19 --lazy --ohh January 22, 2016 @ 09:48
51327 bytes -3 bytes zopfli --i10000 --mls8 --bsr22 --lazy --ohh January 22, 2016 @ 09:36
51330 bytes -1 byte zopfli --i1000 --mls8 --bsr22 --lazy --ohh January 22, 2016 @ 09:30
51331 bytes -6 bytes zopfli --i1000 --mls2 --bsr19 --lazy --ohh January 22, 2016 @ 09:29
51337 bytes -4 bytes zopfli --i1000 --mls16 --bsr25 --lazy --ohh January 22, 2016 @ 09:25
51341 bytes -6 bytes zopfli --i1000 --mls32 --bsr15 --lazy --ohh January 22, 2016 @ 09:24
51347 bytes zopfli --i100 --mls32 --bsr15 --lazy --ohh January 22, 2016 @ 09:21

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

Most recent activity on November 22, 2016 @ 16:29.

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, 100,000 or 1,000,000.
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
51375 51376 51377 51375 51375 51375 51377 51378 51380 51379 51363 51364 51365 51374 51374
51362 51335 51336 51359 51365 51357 51351 51356 51363 51363 51351 51361 51362 51332 51369
51360 51340 51335 51327 51365 51346 51352 51357 51360 51362 51364 51363 51362 51333 51368
51330 51338 51334 51347 51343 51365 51353 51367 51345 51351 51361 51349 51352 51328 51367
51356 51338 51341 51343 51361 51347 51355 51358 51348 51360 51358 51366 51364 51330 51363
51356 51349 51365 51339 51357 51350 51352 51360 51362 51345 51349 51351 51354 51331 51367
51363 51340 51335 51333 51338 51345 51352 51359 51360 51345 51361 51351 51352 51355 51366
51356 51342 51332 51336 51339 51346 51347 51357 51357 51360 51362 51353 51364 51315 51366
51339 51336 51337 51336 51331 51346 51356 51356 51362 51351 51361 51348 51352 51356 51367
51358 51339 51336 51342 51333 51350 51349 51355 51345 51345 51361 51349 51353 51331 51366
51360 51345 51324 51335 51365 51349 51358 51357 51357 51363 51362 51349 51354 51328 51367
51334 51345 51337 51335 51331 51349 51353 51357 51346 51344 51362 51349 51352 51327 51366
51354 51322 51337 51334 51343 51346 51355 51355 51354 51346 51344 51359 51349 51332 51366
51335 51341 51340 51334 51331 51346 51357 51357 51358 51360 51361 51349 51350 51327 51368
51360 51334 51345 51334 51339 51349 51352 51356 51357 51351 51348 51344 51352 51330 51366
51316 51339 51330 51333 51334 51349 51356 51356 51344 51351 51362 51350 51352 51327 51366
51339 51340 51340 51338 51344 51345 51352 51356 51357 51345 51349 51347 51352 51331 51363
51338 51331 51321 51334 51335 51349 51353 51356 51357 51345 51361 51349 51352 51327 51366
51326 51340 51323 51335 51334 51350 51352 51356 51359 51345 51362 51344 51352 51334 51363
51357 51343 51342 51335 51331 51361 51353 51357 51357 51360 51349 51352 51353 51336 51369
51336 51340 51338 51332 51331 51352 51351 51356 51349 51363 51350 51346 51361 51333 51361
51355 51347 51349 51346 51366 51339 51345 51356 51344 51360 51349 51346 51361 51321 51366
51355 51360 51362 51359 51348 51336 51344 51345 51338 51344 51361 51344 51349 51330 51360

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 51338 bytes 100%
1,000 51328 bytes -10 bytes 100%
10,000 51321 bytes -7 bytes 100%
100,000 51319 bytes -2 bytes 4.35%
1,000,000 51315 bytes -4 bytes 0.58%
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
51453 bytes +138 bytes (+0.27%) +1 byte
51452 bytes +137 bytes (+0.27%)
51456 bytes +141 bytes (+0.27%) +4 bytes
51463 bytes +148 bytes (+0.29%) +11 bytes
51482 bytes +167 bytes (+0.33%) +30 bytes
51495 bytes +180 bytes (+0.35%) +43 bytes
51487 bytes +172 bytes (+0.34%) +35 bytes
51525 bytes +210 bytes (+0.41%) +73 bytes
51508 bytes +193 bytes (+0.38%) +56 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 40037 bytes -11278 bytes (-21.98%)
RAR (proprietary) RAR rar a -m5 -md64m -mc63:128t -mt1 42191 bytes -9124 bytes (-17.78%)
PPMd (Wikipedia) 7zip 7za a -mx=9 -m0=ppmd 43493 bytes -7822 bytes (-15.24%)
Brotli (Wikipedia) brotli brotli -q 11 46708 bytes -4607 bytes (-8.98%)
Burrows-Wheeler transform (Wikipedia) bzip2 bzip2 -9 47567 bytes -3748 bytes (-7.30%)
LZMA2 (Wikipedia) xz xz -9 48160 bytes -3155 bytes (-6.15%)
ZSTD (Wikipedia) zstd zstd -19 49583 bytes -1732 bytes (-3.38%)

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