Choose a version:
14% The original file has 1100452 bytes (1,074.7k) and is available from the project website.
There you can find the official minified version, too, which brings down the size to 151093 bytes (147.6k, 14%).

After GZIP compression these minified files vary in size:
Boot
  61684 bytes (60.2k)
CDN, direct link
cdnjs
  53957 bytes (52.7k)
CDN, direct link
cdnhttps
  53600 bytes (52.3k)
CDN, direct link
unpkg
  53600 bytes (52.3k)
CDN, direct link
gzip -6 (default)
  53595 bytes (52.3k)
local copy
Google
  53531 bytes (52.3k)
CDN, direct link
gzip -9
  53513 bytes (52.3k)
local copy
kzip -s0 -rn -b0
  51826 bytes (50.6k)
local copy
libdeflate -12
  51825 bytes (50.6k)
local copy
7zip -mx=9 -tgzip
  51816 bytes (50.6k)
local copy
pigz -11 -n
  51779 bytes (50.6k)
local copy
Zopfli
  51687 bytes (50.5k)
local copy
Zopfli (defluff)
  51686 bytes (50.5k)
local copy

perma-link to the smallest file on my server:
http://minime.stephan-brumme.com/files/angularjs/angular-1.4.12.min.js

You will automatically get the smallest AngularJS 1.4.12 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 1844 bytes by using my AngularJS 1.4.12 Zopfli version instead of the best available CDN (3.57% smaller than Google, 51687 vs. 53531 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 --mls16 --bsr7 --lazy --ohh

(found June 17, 2016)
Description Value Parameter
iterations 1000000  --i1000000
maximum blocks 8  --mb8
maximum length score 16  --mls16
block splitting recursion 7  --bsr7
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 (51686 bytes).

Verify file integrity

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

MD5:
curl --silent --compressed https://code.angularjs.org/1.4.12/angular.min.js --location | md5sum
75897600afa772c6b984fac7c518ab90  -
curl --silent --compressed http://minime.stephan-brumme.com/files/angularjs/angular-1.4.12.min.zopfli.js.gz | md5sum
75897600afa772c6b984fac7c518ab90  -

SHA1:
curl --silent --compressed https://code.angularjs.org/1.4.12/angular.min.js --location | sha1sum
ef1ef949205e8d6eb00167afdb850f8dbf199d2d  -
curl --silent --compressed http://minime.stephan-brumme.com/files/angularjs/angular-1.4.12.min.zopfli.js.gz | sha1sum
ef1ef949205e8d6eb00167afdb850f8dbf199d2d  -

All listed CDNs deliver identical contents:
CDN Size (compressed) MD5 (uncompressed) Timestamp
Boot 61684 bytes 75897600afa772c6b984fac7c518ab90 June 16, 2016 @ 10:06
cdnjs 53957 bytes 75897600afa772c6b984fac7c518ab90 June 15, 2016 @ 21:16
cdnhttps 53600 bytes 75897600afa772c6b984fac7c518ab90 November 22, 2016 @ 16:29
unpkg 53600 bytes 75897600afa772c6b984fac7c518ab90 July 11, 2016 @ 15:52
Google 53531 bytes 75897600afa772c6b984fac7c518ab90 June 21, 2016 @ 20:27

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
51687 bytes -3 bytes zopfli --i1000000 --mls16 --bsr7 --lazy --ohh June 17, 2016 @ 16:12
51690 bytes -1 byte zopfli --i100000 --mls16 --bsr7 --lazy --ohh June 16, 2016 @ 16:35
51691 bytes -3 bytes zopfli --i100000 --mls8 --bsr21 --lazy --ohh June 16, 2016 @ 13:11
51694 bytes -5 bytes zopfli --i10000 --mls8 --bsr21 --lazy --ohh June 16, 2016 @ 11:55
51699 bytes -16 bytes zopfli --i1000 --mls8 --bsr21 --lazy --ohh June 16, 2016 @ 11:40
51715 bytes zopfli --i100 --mls8 --bsr21 --lazy --ohh June 16, 2016 @ 11:38

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
51756 51756 51756 51755 51755 51756 51757 51757 51758 51758 51747 51748 51759 51744 51752
51738 51711 51710 51712 51737 51736 51728 51716 51737 51723 51737 51740 51739 51730 51730
51723 51692 51698 51699 51719 51723 51721 51737 51736 51722 51721 51741 51739 51732 51700
51728 51705 51709 51687 51693 51737 51726 51736 51719 51734 51738 51725 51743 51734 51725
51723 51710 51705 51696 51736 51737 51738 51736 51738 51725 51716 51719 51739 51727 51725
51718 51736 51719 51703 51716 51718 51721 51720 51738 51726 51737 51731 51740 51705 51699
51722 51720 51730 51721 51738 51728 51721 51719 51715 51731 51724 51723 51740 51729 51724
51738 51721 51696 51716 51737 51718 51721 51713 51737 51738 51740 51724 51740 51727 51698
51722 51729 51718 51723 51725 51719 51723 51715 51714 51724 51715 51731 51740 51730 51699
51724 51722 51716 51717 51728 51737 51737 51736 51736 51732 51717 51731 51738 51730 51725
51721 51736 51697 51704 51724 51719 51721 51714 51738 51737 51721 51722 51739 51729 51700
51726 51711 51713 51704 51704 51719 51722 51714 51737 51724 51725 51731 51740 51728 51700
51722 51700 51699 51703 51716 51719 51726 51736 51733 51724 51724 51739 51741 51729 51699
51726 51723 51702 51697 51725 51718 51722 51715 51736 51724 51724 51731 51740 51729 51696
51722 51708 51706 51705 51727 51722 51722 51717 51715 51725 51724 51731 51739 51731 51697
51717 51707 51704 51705 51722 51717 51721 51736 51714 51724 51722 51724 51740 51731 51696
51723 51708 51705 51706 51723 51719 51722 51736 51714 51724 51724 51724 51740 51730 51724
51722 51702 51691 51702 51701 51719 51722 51715 51738 51732 51722 51731 51740 51727 51701
51718 51711 51698 51697 51717 51719 51724 51714 51739 51725 51725 51731 51740 51730 51696
51724 51712 51698 51705 51726 51719 51721 51715 51735 51725 51726 51724 51740 51729 51699
51722 51720 51706 51714 51725 51709 51714 51715 51737 51727 51725 51738 51739 51731 51697
51715 51715 51709 51710 51722 51711 51711 51711 51737 51716 51711 51716 51740 51729 51697
51714 51716 51723 51722 51713 51713 51711 51711 51728 51715 51717 51724 51739 51728 51701

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 51715 bytes 100%
1,000 51698 bytes -17 bytes 100%
10,000 51693 bytes -5 bytes 100%
100,000 51690 bytes -3 bytes 1.16%
1,000,000 51687 bytes -3 bytes 0.29%
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
51826 bytes +139 bytes (+0.27%)
51830 bytes +143 bytes (+0.28%) +4 bytes
51841 bytes +154 bytes (+0.30%) +15 bytes
51844 bytes +157 bytes (+0.30%) +18 bytes
51852 bytes +165 bytes (+0.32%) +26 bytes
51868 bytes +181 bytes (+0.35%) +42 bytes
51866 bytes +179 bytes (+0.35%) +40 bytes
51891 bytes +204 bytes (+0.39%) +65 bytes
51872 bytes +185 bytes (+0.36%) +46 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 40243 bytes -11444 bytes (-22.14%)
RAR (proprietary) RAR rar a -m5 -md64m -mc63:128t -mt1 42460 bytes -9227 bytes (-17.85%)
PPMd (Wikipedia) 7zip 7za a -mx=9 -m0=ppmd 43839 bytes -7848 bytes (-15.18%)
Brotli (Wikipedia) brotli brotli -q 11 46991 bytes -4696 bytes (-9.09%)
Burrows-Wheeler transform (Wikipedia) bzip2 bzip2 -9 47897 bytes -3790 bytes (-7.33%)
LZMA2 (Wikipedia) xz xz -9 48488 bytes -3199 bytes (-6.19%)
ZSTD (Wikipedia) zstd zstd -19 49945 bytes -1742 bytes (-3.37%)

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