Choose a version:
14% The original file has 780557 bytes (762.3k) and is available from the project website.
There you can find the official minified version, too, which brings down the size to 107098 bytes (104.6k, 14%).

After GZIP compression these minified files vary in size:
Boot
  45243 bytes (44.2k)
CDN, direct link
cdnjs
  39839 bytes (38.9k)
CDN, direct link
gzip -6 (default)
  39602 bytes (38.7k)
local copy
cdnhttps
  39580 bytes (38.7k)
CDN, direct link
gzip -9
  39545 bytes (38.6k)
local copy
Google
  39535 bytes (38.6k)
CDN, direct link
Yandex
  39534 bytes (38.6k)
CDN, direct link
7zip -mx=9 -tgzip
  38347 bytes (37.4k)
local copy
kzip -s0 -rn -b1
  38333 bytes (37.4k)
local copy
pigz -11 -n
  38314 bytes (37.4k)
local copy
libdeflate -12
  38309 bytes (37.4k)
local copy
Zopfli
  38257 bytes (37.4k)
local copy

perma-link to the smallest file on my server:
http://minime.stephan-brumme.com/files/angularjs/angular-1.2.23.min.js

You will automatically get the smallest AngularJS 1.2.23 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 1277 bytes by using my AngularJS 1.2.23 Zopfli version instead of the best available CDN (3.34% smaller than Yandex, 38257 vs. 39534 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 --bsr18 --lazy --ohh

(found February 16, 2016)
Description Value Parameter
iterations 100000  --i100000
maximum blocks 8  --mb8
maximum length score 8192  --mls8192
block splitting recursion 18  --bsr18
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/1.2.23/angular.min.js --location | md5sum
b2fa50a94417bbcc2d60df8b8285d881  -
curl --silent --compressed http://minime.stephan-brumme.com/files/angularjs/angular-1.2.23.min.zopfli.js.gz | md5sum
b2fa50a94417bbcc2d60df8b8285d881  -

SHA1:
curl --silent --compressed https://code.angularjs.org/1.2.23/angular.min.js --location | sha1sum
2755345c3cb379385b928e1382f0f38994f2f92d  -
curl --silent --compressed http://minime.stephan-brumme.com/files/angularjs/angular-1.2.23.min.zopfli.js.gz | sha1sum
2755345c3cb379385b928e1382f0f38994f2f92d  -

All listed CDNs deliver identical contents:
CDN Size (compressed) MD5 (uncompressed) Timestamp
Boot 45243 bytes b2fa50a94417bbcc2d60df8b8285d881 March 18, 2015 @ 10:32
cdnjs 39839 bytes b2fa50a94417bbcc2d60df8b8285d881 December 18, 2014 @ 18:00
cdnhttps 39580 bytes b2fa50a94417bbcc2d60df8b8285d881 December 24, 2015 @ 07:32
Google 39535 bytes b2fa50a94417bbcc2d60df8b8285d881 August 23, 2014 @ 06:36
Yandex 39534 bytes b2fa50a94417bbcc2d60df8b8285d881 June 11, 2015 @ 14:17

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

Other Versions

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

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
38257 bytes -1 byte zopfli --i100000 --mls8192 --bsr18 --lazy --ohh February 16, 2016 @ 12:13
38258 bytes -1 byte zopfli --i100000 --mls16 --bsr19 --lazy --ohh February 16, 2016 @ 11:34
38259 bytes -2 bytes zopfli --i100000 --mls128 --bsr6 --lazy --ohh November 27, 2015 @ 23:06
38261 bytes -1 byte zopfli --i10000 --mls128 --bsr6 --lazy --ohh October 14, 2015 @ 07:51
38262 bytes -1 byte zopfli --i10000 --mls1024 --bsr8 --lazy --ohh September 9, 2015 @ 13:24
38263 bytes -1 byte zopfli --i1000 --mls512 --bsr10 --lazy --ohh September 7, 2015 @ 19:41
38264 bytes -3 bytes zopfli --i1000 --mls512 --bsr8 --lazy --ohh September 7, 2015 @ 19:41
38267 bytes zopfli --i100 --mls8192 --bsr11 --lazy --ohh September 7, 2015 @ 16:18

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 @ 14:37.

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
38263 38264 38264 38264 38267 38267 38267 38268 38268 38268 38269 38267 38267 38265 38265
38265 38265 38264 38263 38262 38263 38265 38266 38268 38265 38265 38266 38265 38263 38269
38267 38266 38267 38262 38262 38262 38259 38263 38264 38265 38272 38264 38263 38264 38268
38270 38270 38263 38262 38263 38263 38263 38263 38263 38268 38263 38264 38263 38263 38264
38269 38263 38262 38258 38263 38263 38263 38264 38263 38262 38263 38265 38262 38263 38268
38262 38263 38280 38273 38275 38274 38279 38268 38263 38281 38277 38272 38262 38263 38264
38267 38269 38263 38259 38280 38282 38275 38264 38263 38269 38263 38273 38263 38263 38264
38262 38262 38262 38259 38262 38268 38263 38263 38263 38268 38275 38279 38262 38263 38268
38263 38262 38263 38262 38263 38268 38262 38270 38267 38268 38262 38274 38263 38263 38268
38262 38262 38262 38262 38262 38263 38262 38262 38263 38267 38271 38273 38264 38264 38268
38262 38263 38262 38259 38263 38263 38262 38262 38264 38268 38265 38273 38263 38263 38264
38267 38267 38265 38262 38263 38263 38262 38264 38263 38268 38262 38273 38262 38264 38264
38271 38277 38279 38281 38278 38283 38272 38280 38281 38267 38265 38273 38263 38263 38269
38262 38263 38264 38259 38268 38267 38263 38263 38267 38281 38277 38278 38262 38263 38268
38267 38266 38263 38263 38263 38263 38262 38263 38263 38268 38264 38273 38257 38264 38268
38267 38266 38264 38258 38263 38263 38263 38264 38268 38269 38262 38273 38263 38263 38266
38263 38267 38262 38262 38263 38263 38262 38263 38265 38262 38262 38273 38262 38263 38269
38266 38267 38262 38262 38262 38269 38262 38263 38262 38268 38263 38273 38257 38263 38266
38263 38263 38262 38262 38263 38267 38263 38264 38263 38268 38264 38273 38263 38263 38270
38267 38268 38262 38263 38262 38263 38262 38263 38263 38268 38265 38273 38262 38263 38264
38262 38262 38263 38262 38262 38263 38262 38263 38263 38268 38263 38273 38263 38263 38269
38262 38262 38262 38259 38263 38263 38262 38264 38263 38269 38262 38273 38262 38264 38268
38263 38262 38262 38257 38263 38263 38263 38263 38262 38269 38260 38274 38262 38263 38268

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 38266 bytes 100%
1,000 38262 bytes -4 bytes 100%
10,000 38261 bytes -1 byte 100%
100,000 38257 bytes -4 bytes 3.48%
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
38333 bytes +76 bytes (+0.20%)
38333 bytes +76 bytes (+0.20%)
38353 bytes +96 bytes (+0.25%) +20 bytes
38383 bytes +126 bytes (+0.33%) +50 bytes
38420 bytes +163 bytes (+0.43%) +87 bytes
38445 bytes +188 bytes (+0.49%) +112 bytes
38411 bytes +154 bytes (+0.40%) +78 bytes
38394 bytes +137 bytes (+0.36%) +61 bytes
38410 bytes +153 bytes (+0.40%) +77 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 31042 bytes -7215 bytes (-18.86%)
RAR (proprietary) RAR rar a -m5 -md64m -mc63:128t -mt1 32206 bytes -6051 bytes (-15.82%)
PPMd (Wikipedia) 7zip 7za a -mx=9 -m0=ppmd 33733 bytes -4524 bytes (-11.83%)
Brotli (Wikipedia) brotli brotli -q 11 35100 bytes -3157 bytes (-8.25%)
Burrows-Wheeler transform (Wikipedia) bzip2 bzip2 -9 36122 bytes -2135 bytes (-5.58%)
LZMA2 (Wikipedia) xz xz -9 36528 bytes -1729 bytes (-4.52%)
ZSTD (Wikipedia) zstd zstd -19 37472 bytes -785 bytes (-2.05%)

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