Choose a version:
14% The original file has 745991 bytes (728.5k) and is available from the project website.
There you can find the official minified version, too, which brings down the size to 103155 bytes (100.7k, 14%).

After GZIP compression these minified files vary in size:
Boot
  43528 bytes (42.5k)
CDN, direct link
Baidu
  38418 bytes (37.5k)
CDN, direct link
cdnjs
  38295 bytes (37.4k)
CDN, direct link
gzip -6 (default)
  38073 bytes (37.2k)
local copy
cdnhttps
  38051 bytes (37.2k)
CDN, direct link
Google
  38018 bytes (37.1k)
CDN, direct link
Yandex
  38002 bytes (37.1k)
CDN, direct link
jsdelivr
  38002 bytes (37.1k)
CDN, direct link
gzip -9
  37998 bytes (37.1k)
local copy
7zip -mx=9 -tgzip
  36872 bytes (36.0k)
local copy
kzip -s0 -rn -b1
  36864 bytes (36.0k)
local copy
libdeflate -12
  36854 bytes (36.0k)
local copy
pigz -11 -n
  36791 bytes (35.9k)
local copy
Zopfli
  36772 bytes (35.9k)
local copy
Zopfli (defluff)
  36771 bytes (35.9k)
local copy

perma-link to the smallest file on my server:
http://minime.stephan-brumme.com/files/angularjs/angular-1.2.15.min.js

You will automatically get the smallest AngularJS 1.2.15 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 1230 bytes by using my AngularJS 1.2.15 Zopfli version instead of the best available CDN (3.34% smaller than jsdelivr, 36772 vs. 38002 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 --mls2 --bsr17 --lazy --ohh

(found November 27, 2015)
Description Value Parameter
iterations 100000  --i100000
maximum blocks 8  --mb8
maximum length score 2  --mls2
block splitting recursion 17  --bsr17
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 (36771 bytes).

Verify file integrity

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

MD5:
curl --silent --compressed https://code.angularjs.org/1.2.15/angular.min.js --location | md5sum
db988a693aa250e1ac448cd6887451b3  -
curl --silent --compressed http://minime.stephan-brumme.com/files/angularjs/angular-1.2.15.min.zopfli.js.gz | md5sum
db988a693aa250e1ac448cd6887451b3  -

SHA1:
curl --silent --compressed https://code.angularjs.org/1.2.15/angular.min.js --location | sha1sum
02d06241dee35bf8075c27d1f0178b8b54148339  -
curl --silent --compressed http://minime.stephan-brumme.com/files/angularjs/angular-1.2.15.min.zopfli.js.gz | sha1sum
02d06241dee35bf8075c27d1f0178b8b54148339  -

These CDNs send you the original file:
CDN Size (compressed) MD5 (uncompressed) Timestamp
Boot 43528 bytes db988a693aa250e1ac448cd6887451b3 March 18, 2015 @ 10:25
cdnjs 38295 bytes db988a693aa250e1ac448cd6887451b3 March 28, 2014 @ 15:15
cdnhttps 38051 bytes db988a693aa250e1ac448cd6887451b3 December 24, 2015 @ 07:32
Google 38018 bytes db988a693aa250e1ac448cd6887451b3 March 21, 2014 @ 23:35
Yandex 38002 bytes db988a693aa250e1ac448cd6887451b3 June 11, 2015 @ 14:17
jsdelivr 38002 bytes db988a693aa250e1ac448cd6887451b3 August 7, 2014 @ 18:31

And some CDNs send you a different file:
CDN Size (compressed) MD5 (uncompressed) Comment / Diff Timestamp
Baidu 38418 bytes 0087a0b65517d3026ab613ac84e50c79 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
36772 bytes -2 bytes zopfli --i100000 --mls2 --bsr17 --lazy --ohh November 27, 2015 @ 17:38
36774 bytes -1 byte zopfli --i10000 --mls2 --bsr17 --lazy --ohh November 27, 2015 @ 17:00
36775 bytes -1 byte zopfli --i10000 --mls1024 --bsr14 --lazy --ohh September 9, 2015 @ 18:25
36776 bytes -1 byte zopfli --i10000 --mls512 --bsr10 --lazy --ohh September 9, 2015 @ 18:20
36777 bytes -3 bytes zopfli --i1000 --mls1024 --bsr14 --lazy --ohh September 7, 2015 @ 20:14
36780 bytes -1 byte zopfli --i1000 --mls512 --bsr8 --lazy --ohh September 7, 2015 @ 20:14
36781 bytes -4 bytes zopfli --i1000 --mls512 --bsr11 --lazy --ohh September 7, 2015 @ 20:13
36785 bytes zopfli --i100 --mls512 --bsr13 --lazy --ohh September 7, 2015 @ 16:10

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
36778 36778 36778 36778 36782 36780 36783 36781 36785 36786 36791 36792 36787 36792 36777
36776 36775 36801 36778 36778 36780 36781 36779 36780 36780 36810 36779 36780 36780 36779
36776 36777 36779 36777 36776 36776 36784 36779 36778 36780 36784 36780 36780 36779 36780
36777 36776 36806 36805 36807 36798 36780 36779 36780 36778 36776 36776 36780 36779 36781
36778 36780 36780 36778 36778 36777 36779 36777 36777 36775 36779 36781 36778 36782 36784
36801 36806 36809 36803 36808 36809 36808 36806 36777 36777 36776 36811 36779 36783 36779
36793 36793 36810 36777 36792 36779 36779 36809 36776 36778 36782 36779 36775 36790 36776
36777 36776 36778 36776 36775 36780 36780 36778 36778 36777 36777 36777 36777 36779 36781
36777 36776 36778 36775 36773 36776 36780 36776 36777 36777 36776 36776 36779 36781 36779
36776 36776 36776 36776 36777 36775 36780 36776 36778 36778 36780 36777 36776 36780 36779
36782 36776 36775 36776 36775 36783 36780 36776 36775 36775 36780 36776 36780 36783 36779
36775 36776 36780 36781 36790 36781 36780 36777 36778 36776 36778 36777 36778 36781 36780
36790 36790 36798 36782 36810 36783 36783 36809 36804 36806 36780 36776 36780 36783 36808
36772 36772 36776 36776 36807 36806 36811 36806 36808 36810 36809 36804 36782 36783 36778
36777 36776 36790 36779 36775 36778 36781 36778 36777 36775 36809 36777 36778 36779 36780
36777 36776 36778 36777 36777 36777 36780 36778 36777 36778 36810 36776 36779 36783 36780
36776 36776 36777 36776 36775 36777 36780 36776 36779 36777 36781 36776 36778 36779 36780
36777 36775 36778 36775 36778 36776 36781 36776 36777 36777 36781 36775 36780 36780 36780
36776 36775 36806 36777 36777 36776 36780 36776 36778 36777 36781 36777 36779 36782 36777
36775 36776 36777 36776 36775 36783 36780 36776 36776 36776 36781 36777 36777 36782 36779
36775 36775 36776 36776 36776 36775 36780 36778 36777 36777 36780 36777 36779 36781 36782
36775 36776 36776 36776 36775 36777 36784 36777 36776 36775 36779 36776 36778 36781 36780
36777 36776 36776 36779 36777 36776 36780 36779 36777 36774 36780 36776 36779 36783 36777

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 36785 bytes 100%
1,000 36776 bytes -9 bytes 100%
10,000 36774 bytes -2 bytes 100%
100,000 36772 bytes -2 bytes 1.16%
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
36864 bytes +92 bytes (+0.25%)
36864 bytes +92 bytes (+0.25%)
36887 bytes +115 bytes (+0.31%) +23 bytes
36920 bytes +148 bytes (+0.40%) +56 bytes
36954 bytes +182 bytes (+0.49%) +90 bytes
36978 bytes +206 bytes (+0.56%) +114 bytes
36938 bytes +166 bytes (+0.45%) +74 bytes
36923 bytes +151 bytes (+0.41%) +59 bytes
36947 bytes +175 bytes (+0.48%) +83 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 29865 bytes -6907 bytes (-18.78%)
RAR (proprietary) RAR rar a -m5 -md64m -mc63:128t -mt1 31027 bytes -5745 bytes (-15.62%)
PPMd (Wikipedia) 7zip 7za a -mx=9 -m0=ppmd 32372 bytes -4400 bytes (-11.97%)
Brotli (Wikipedia) brotli brotli -q 11 33786 bytes -2986 bytes (-8.12%)
Burrows-Wheeler transform (Wikipedia) bzip2 bzip2 -9 34784 bytes -1988 bytes (-5.41%)
LZMA2 (Wikipedia) xz xz -9 35224 bytes -1548 bytes (-4.21%)
ZSTD (Wikipedia) zstd zstd -19 36098 bytes -674 bytes (-1.83%)

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