Choose a version:
14% The original file has 716215 bytes (699.4k) and is available from the project website.
There you can find the official minified version, too, which brings down the size to 99720 bytes (97.4k, 14%).

After GZIP compression these minified files vary in size:
Boot
  41851 bytes (40.9k)
CDN, direct link
Baidu
  36943 bytes (36.1k)
CDN, direct link
cdnjs
  36832 bytes (36.0k)
CDN, direct link
gzip -6 (default)
  36611 bytes (35.8k)
local copy
cdnhttps
  36590 bytes (35.7k)
CDN, direct link
gzip -9
  36558 bytes (35.7k)
local copy
Google
  36556 bytes (35.7k)
CDN, direct link
Yandex
  36556 bytes (35.7k)
CDN, direct link
jsdelivr
  36556 bytes (35.7k)
CDN, direct link
libdeflate -12
  35477 bytes (34.6k)
local copy
7zip -mx=9 -tgzip
  35456 bytes (34.6k)
local copy
kzip -s0 -rn -b1
  35436 bytes (34.6k)
local copy
pigz -11 -n
  35406 bytes (34.6k)
local copy
Zopfli
  35364 bytes (34.5k)
local copy

perma-link to the smallest file on my server:
http://minime.stephan-brumme.com/files/angularjs/angular-1.2.3.min.js

You will automatically get the smallest AngularJS 1.2.3 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 1192 bytes by using my AngularJS 1.2.3 Zopfli version instead of the best available CDN (3.37% smaller than jsdelivr, 35364 vs. 36556 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 --mls8192 --bsr19 --lazy --ohh

(found February 17, 2016)
Description Value Parameter
iterations 100000  --i100000
maximum blocks 8  --mb8
maximum length score 8192  --mls8192
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

Verify file integrity

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

MD5:
curl --silent --compressed https://code.angularjs.org/1.2.3/angular.min.js --location | md5sum
768598a5f348620a85ba8400524b2f73  -
curl --silent --compressed http://minime.stephan-brumme.com/files/angularjs/angular-1.2.3.min.zopfli.js.gz | md5sum
768598a5f348620a85ba8400524b2f73  -

SHA1:
curl --silent --compressed https://code.angularjs.org/1.2.3/angular.min.js --location | sha1sum
aef93c5bcdda5cec78810d35fe860cc21cbeb04f  -
curl --silent --compressed http://minime.stephan-brumme.com/files/angularjs/angular-1.2.3.min.zopfli.js.gz | sha1sum
aef93c5bcdda5cec78810d35fe860cc21cbeb04f  -

These CDNs send you the original file:
CDN Size (compressed) MD5 (uncompressed) Timestamp
Boot 41851 bytes 768598a5f348620a85ba8400524b2f73 March 18, 2015 @ 10:36
cdnjs 36832 bytes 768598a5f348620a85ba8400524b2f73 March 28, 2014 @ 15:15
cdnhttps 36590 bytes 768598a5f348620a85ba8400524b2f73 December 24, 2015 @ 07:32
Google 36556 bytes 768598a5f348620a85ba8400524b2f73 (invalid)
Yandex 36556 bytes 768598a5f348620a85ba8400524b2f73 June 11, 2015 @ 14:17
jsdelivr 36556 bytes 768598a5f348620a85ba8400524b2f73 August 7, 2014 @ 18:32

And some CDNs send you a different file:
CDN Size (compressed) MD5 (uncompressed) Comment / Diff Timestamp
Baidu 36943 bytes 7a00c38fef7cb332f8398f5e9d3ed074 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
35364 bytes -4 bytes zopfli --i100000 --mls8192 --bsr19 --lazy --ohh February 17, 2016 @ 13:14
35368 bytes -2 bytes zopfli --i10000 --mls8192 --bsr19 --lazy --ohh November 26, 2015 @ 17:56
35370 bytes -3 bytes zopfli --i10000 --mls2048 --bsr12 --lazy --ohh September 10, 2015 @ 01:25
35373 bytes -4 bytes zopfli --i1000 --mls2048 --bsr8 --lazy --ohh September 7, 2015 @ 19:20
35377 bytes zopfli --i100 --mls2048 --bsr8 --lazy --ohh September 7, 2015 @ 16:07

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 @ 14:40.

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
35379 35379 35396 35393 35391 35394 35393 35393 35394 35386 35391 35382 35384 35397 35378
35398 35393 35397 35394 35391 35392 35395 35387 35388 35389 35389 35388 35397 35398 35379
35393 35393 35395 35396 35394 35394 35395 35388 35393 35392 35373 35380 35372 35379 35379
35389 35390 35396 35389 35396 35396 35394 35387 35388 35388 35371 35381 35378 35374 35379
35397 35392 35384 35393 35391 35394 35393 35393 35387 35394 35371 35374 35372 35374 35374
35382 35395 35394 35391 35390 35390 35395 35387 35389 35393 35390 35388 35385 35387 35378
35387 35387 35396 35398 35398 35395 35396 35387 35388 35385 35390 35391 35386 35374 35377
35393 35392 35398 35398 35397 35399 35396 35395 35389 35387 35389 35387 35387 35374 35380
35381 35390 35391 35394 35395 35394 35394 35388 35387 35388 35370 35381 35373 35374 35378
35390 35392 35394 35394 35395 35394 35396 35387 35389 35379 35389 35383 35373 35387 35400
35393 35393 35395 35394 35396 35395 35397 35387 35388 35390 35389 35388 35375 35375 35380
35390 35391 35396 35393 35396 35395 35397 35391 35387 35389 35371 35381 35386 35374 35380
35390 35389 35394 35395 35396 35395 35396 35394 35388 35385 35371 35377 35379 35375 35379
35390 35389 35397 35395 35397 35395 35396 35392 35387 35388 35389 35389 35372 35374 35379
35390 35389 35397 35398 35397 35391 35396 35390 35387 35385 35390 35389 35386 35374 35379
35381 35394 35398 35397 35398 35398 35394 35389 35389 35384 35389 35388 35364 35398 35378
35394 35390 35397 35398 35398 35402 35396 35388 35390 35388 35389 35385 35372 35374 35380
35381 35391 35397 35398 35398 35397 35397 35387 35388 35385 35389 35387 35373 35374 35380
35392 35394 35385 35387 35378 35389 35396 35389 35387 35385 35388 35388 35373 35375 35380
35395 35397 35392 35398 35398 35398 35397 35388 35387 35385 35388 35373 35385 35375 35379
35380 35390 35397 35398 35397 35397 35396 35388 35388 35388 35372 35386 35379 35374 35379
35393 35392 35386 35398 35399 35398 35396 35388 35387 35376 35390 35387 35372 35374 35379
35396 35396 35397 35397 35398 35398 35396 35389 35387 35388 35390 35379 35372 35374 35379

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 35374 bytes 100%
1,000 35371 bytes -3 bytes 100%
10,000 35368 bytes -3 bytes 100%
100,000 35364 bytes -4 bytes 0.29%
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
35438 bytes +74 bytes (+0.21%) +2 bytes
35436 bytes +72 bytes (+0.20%)
35465 bytes +101 bytes (+0.29%) +29 bytes
35494 bytes +130 bytes (+0.37%) +58 bytes
35535 bytes +171 bytes (+0.48%) +99 bytes
35548 bytes +184 bytes (+0.52%) +112 bytes
35514 bytes +150 bytes (+0.42%) +78 bytes
35540 bytes +176 bytes (+0.50%) +104 bytes
35567 bytes +203 bytes (+0.57%) +131 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 28865 bytes -6499 bytes (-18.38%)
RAR (proprietary) RAR rar a -m5 -md64m -mc63:128t -mt1 29904 bytes -5460 bytes (-15.44%)
PPMd (Wikipedia) 7zip 7za a -mx=9 -m0=ppmd 31090 bytes -4274 bytes (-12.09%)
Brotli (Wikipedia) brotli brotli -q 11 32557 bytes -2807 bytes (-7.94%)
Burrows-Wheeler transform (Wikipedia) bzip2 bzip2 -9 33628 bytes -1736 bytes (-4.91%)
LZMA2 (Wikipedia) xz xz -9 33912 bytes -1452 bytes (-4.11%)
ZSTD (Wikipedia) zstd zstd -19 34758 bytes -606 bytes (-1.71%)

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