Choose a version:
14% The original file has 709226 bytes (692.6k) and is available from the project website.
There you can find the official minified version, too, which brings down the size to 99130 bytes (96.8k, 14%).

After GZIP compression these minified files vary in size:
Boot
  41706 bytes (40.7k)
CDN, direct link
cdnjs
  37658 bytes (36.8k)
CDN, direct link
Baidu
  36818 bytes (36.0k)
CDN, direct link
gzip -6 (default)
  36468 bytes (35.6k)
local copy
cdnhttps
  36447 bytes (35.6k)
CDN, direct link
Google
  36412 bytes (35.6k)
CDN, direct link
gzip -9
  36412 bytes (35.6k)
local copy
Yandex
  36410 bytes (35.6k)
CDN, direct link
jsdelivr
  36410 bytes (35.6k)
CDN, direct link
7zip -mx=9 -tgzip
  35328 bytes (34.5k)
local copy
libdeflate -12
  35313 bytes (34.5k)
local copy
kzip -s0 -rn -b1
  35304 bytes (34.5k)
local copy
pigz -11 -n
  35261 bytes (34.4k)
local copy
Zopfli
  35229 bytes (34.4k)
local copy

perma-link to the smallest file on my server:
http://minime.stephan-brumme.com/files/angularjs/angular-1.2.1.min.js

You will automatically get the smallest AngularJS 1.2.1 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 1181 bytes by using my AngularJS 1.2.1 Zopfli version instead of the best available CDN (3.35% smaller than jsdelivr, 35229 vs. 36410 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 --bsr12 --lazy --ohh

(found November 26, 2015)
Description Value Parameter
iterations 100000  --i100000
maximum blocks 8  --mb8
maximum length score 8192  --mls8192
block splitting recursion 12  --bsr12
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/1.2.1/angular.min.js --location | md5sum
3a696f8977bb067c5efbfa65aa8ab814  -
curl --silent --compressed http://minime.stephan-brumme.com/files/angularjs/angular-1.2.1.min.zopfli.js.gz | md5sum
3a696f8977bb067c5efbfa65aa8ab814  -

SHA1:
curl --silent --compressed https://code.angularjs.org/1.2.1/angular.min.js --location | sha1sum
e32779ff20fbd069c313ce25e80d61ae55863277  -
curl --silent --compressed http://minime.stephan-brumme.com/files/angularjs/angular-1.2.1.min.zopfli.js.gz | sha1sum
e32779ff20fbd069c313ce25e80d61ae55863277  -

These CDNs send you the original file:
CDN Size (compressed) MD5 (uncompressed) Timestamp
Boot 41706 bytes 3a696f8977bb067c5efbfa65aa8ab814 March 18, 2015 @ 10:21
cdnjs 37658 bytes 3a696f8977bb067c5efbfa65aa8ab814 (invalid)
cdnhttps 36447 bytes 3a696f8977bb067c5efbfa65aa8ab814 December 24, 2015 @ 07:32
Google 36412 bytes 3a696f8977bb067c5efbfa65aa8ab814 (invalid)
Yandex 36410 bytes 3a696f8977bb067c5efbfa65aa8ab814 June 11, 2015 @ 14:17
jsdelivr 36410 bytes 3a696f8977bb067c5efbfa65aa8ab814 August 7, 2014 @ 18:31

And some CDNs send you a different file:
CDN Size (compressed) MD5 (uncompressed) Comment / Diff Timestamp
Baidu 36818 bytes 64ec700bc31f9f91fd90a78a27b0a4c5 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:

1.6.6, 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
35229 bytes -1 byte zopfli --i100000 --mls8192 --bsr12 --lazy --ohh November 26, 2015 @ 19:37
35230 bytes -3 bytes zopfli --i100000 --mls8192 --bsr8 --lazy --ohh November 26, 2015 @ 18:14
35233 bytes -1 byte zopfli --i10000 --mls8192 --bsr12 --lazy --ohh September 10, 2015 @ 02:36
35234 bytes -1 byte zopfli --i10000 --mls2048 --bsr10 --lazy --ohh September 10, 2015 @ 02:18
35235 bytes -1 byte zopfli --i1000 --mls8192 --bsr8 --lazy --ohh September 7, 2015 @ 20:39
35236 bytes -1 byte zopfli --i1000 --mls8192 --bsr12 --lazy --ohh September 7, 2015 @ 20:38
35237 bytes -2 bytes zopfli --i1000 --mls2048 --bsr10 --lazy --ohh September 7, 2015 @ 20:37
35239 bytes zopfli --i100 --mls8192 --bsr8 --lazy --ohh September 7, 2015 @ 17:05

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
35248 35243 35258 35267 35249 35259 35256 35255 35254 35241 35260 35244 35239 35263 35243
35253 35251 35242 35254 35260 35259 35246 35253 35251 35245 35253 35254 35265 35255 35242
35243 35243 35245 35246 35255 35247 35246 35250 35245 35247 35248 35250 35251 35242 35244
35257 35265 35265 35251 35257 35252 35260 35248 35250 35244 35256 35255 35246 35254 35244
35245 35240 35244 35250 35251 35244 35256 35255 35254 35246 35238 35238 35230 35245 35244
35255 35244 35241 35260 35252 35258 35257 35250 35249 35245 35244 35249 35245 35243 35244
35261 35254 35247 35261 35254 35250 35249 35253 35251 35245 35230 35261 35243 35243 35270
35240 35246 35246 35254 35258 35249 35243 35250 35254 35245 35242 35258 35246 35254 35244
35245 35244 35245 35261 35252 35249 35248 35250 35251 35240 35242 35249 35229 35243 35242
35229 35247 35254 35251 35249 35255 35242 35253 35249 35244 35240 35249 35248 35255 35269
35257 35254 35257 35254 35255 35254 35250 35249 35251 35256 35251 35253 35245 35254 35262
35255 35243 35255 35254 35248 35253 35244 35249 35248 35242 35241 35250 35243 35253 35244
35247 35249 35244 35250 35248 35252 35245 35253 35250 35247 35240 35246 35243 35254 35244
35258 35254 35254 35253 35256 35250 35248 35250 35252 35242 35255 35241 35239 35245 35263
35254 35245 35254 35254 35247 35248 35259 35255 35249 35242 35241 35247 35231 35256 35244
35257 35244 35249 35255 35257 35249 35259 35249 35256 35244 35242 35259 35266 35243 35243
35255 35251 35255 35254 35249 35253 35255 35250 35254 35245 35242 35245 35243 35254 35242
35245 35245 35247 35248 35245 35253 35239 35249 35250 35242 35256 35247 35229 35243 35245
35239 35253 35249 35252 35240 35242 35244 35257 35253 35242 35256 35247 35245 35242 35244
35255 35255 35254 35251 35258 35252 35242 35249 35251 35247 35243 35245 35241 35254 35245
35240 35247 35243 35244 35250 35248 35245 35257 35249 35240 35244 35247 35246 35243 35245
35242 35244 35243 35248 35248 35242 35239 35243 35249 35244 35236 35250 35245 35243 35244
35243 35245 35247 35245 35240 35252 35242 35244 35250 35242 35255 35247 35246 35243 35243

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 35239 bytes 100%
1,000 35235 bytes -4 bytes 100%
10,000 35233 bytes -2 bytes 100%
100,000 35229 bytes -4 bytes 1.74%
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
35305 bytes +76 bytes (+0.22%) +1 byte
35304 bytes +75 bytes (+0.21%)
35331 bytes +102 bytes (+0.29%) +27 bytes
35357 bytes +128 bytes (+0.36%) +53 bytes
35397 bytes +168 bytes (+0.48%) +93 bytes
35369 bytes +140 bytes (+0.40%) +65 bytes
35380 bytes +151 bytes (+0.43%) +76 bytes
35416 bytes +187 bytes (+0.53%) +112 bytes
35439 bytes +210 bytes (+0.60%) +135 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 28736 bytes -6493 bytes (-18.43%)
RAR (proprietary) RAR rar a -m5 -md64m -mc63:128t -mt1 29787 bytes -5442 bytes (-15.45%)
PPMd (Wikipedia) 7zip 7za a -mx=9 -m0=ppmd 31042 bytes -4187 bytes (-11.89%)
Brotli (Wikipedia) brotli brotli -q 11 32469 bytes -2760 bytes (-7.83%)
Burrows-Wheeler transform (Wikipedia) bzip2 bzip2 -9 33468 bytes -1761 bytes (-5.00%)
LZMA2 (Wikipedia) xz xz -9 33812 bytes -1417 bytes (-4.02%)
ZSTD (Wikipedia) zstd zstd -19 34652 bytes -577 bytes (-1.64%)

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