Choose a version:
13% The original file has 965742 bytes (943.1k) and is available from the project website.
There you can find the official minified version, too, which brings down the size to 126425 bytes (123.5k, 13%).

After GZIP compression these minified files vary in size:
Boot
  53262 bytes (52.0k)
CDN, direct link
cdnjs
  46793 bytes (45.7k)
CDN, direct link
unpkg
  46527 bytes (45.4k)
CDN, direct link
gzip -6 (default)
  46487 bytes (45.4k)
local copy
cdnhttps
  46465 bytes (45.4k)
CDN, direct link
Google
  46433 bytes (45.3k)
CDN, direct link
gzip -9
  46391 bytes (45.3k)
local copy
7zip -mx=9 -tgzip
  45036 bytes (44.0k)
local copy
kzip -s0 -rn -b0
  44990 bytes (43.9k)
local copy
libdeflate -12
  44990 bytes (43.9k)
local copy
pigz -11 -n
  44926 bytes (43.9k)
local copy
Zopfli
  44889 bytes (43.8k)
local copy
Zopfli (defluff)
  44888 bytes (43.8k)
local copy

perma-link to the smallest file on my server:
http://minime.stephan-brumme.com/files/angularjs/angular-1.3.18.min.js

You will automatically get the smallest AngularJS 1.3.18 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 1544 bytes by using my AngularJS 1.3.18 Zopfli version instead of the best available CDN (3.44% smaller than Google, 44889 vs. 46433 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 --mls256 --bsr17 --lazy --ohh

(found November 30, 2015)
Description Value Parameter
iterations 100000  --i100000
maximum blocks 8  --mb8
maximum length score 256  --mls256
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 (44888 bytes).

Verify file integrity

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

MD5:
curl --silent --compressed https://code.angularjs.org/1.3.18/angular.min.js --location | md5sum
f2fe1b29b6f82a1c4272b09b6903766f  -
curl --silent --compressed http://minime.stephan-brumme.com/files/angularjs/angular-1.3.18.min.zopfli.js.gz | md5sum
f2fe1b29b6f82a1c4272b09b6903766f  -

SHA1:
curl --silent --compressed https://code.angularjs.org/1.3.18/angular.min.js --location | sha1sum
c2b409b0e6066373ca9d1baabb49831e3fc6bfa6  -
curl --silent --compressed http://minime.stephan-brumme.com/files/angularjs/angular-1.3.18.min.zopfli.js.gz | sha1sum
c2b409b0e6066373ca9d1baabb49831e3fc6bfa6  -

All listed CDNs deliver identical contents:
CDN Size (compressed) MD5 (uncompressed) Timestamp
Boot 53262 bytes f2fe1b29b6f82a1c4272b09b6903766f August 22, 2015 @ 05:20
cdnjs 46793 bytes f2fe1b29b6f82a1c4272b09b6903766f August 19, 2015 @ 09:49
unpkg 46527 bytes f2fe1b29b6f82a1c4272b09b6903766f July 11, 2016 @ 15:53
cdnhttps 46465 bytes f2fe1b29b6f82a1c4272b09b6903766f December 24, 2015 @ 07:32
Google 46433 bytes f2fe1b29b6f82a1c4272b09b6903766f August 19, 2015 @ 20:26

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
44889 bytes -1 byte zopfli --i100000 --mls256 --bsr17 --lazy --ohh November 30, 2015 @ 15:18
44890 bytes -1 byte zopfli --i10000 --mls256 --bsr12 --lazy --ohh September 18, 2015 @ 09:38
44891 bytes -4 bytes zopfli --i10000 --mls128 --bsr9 --lazy --ohh September 18, 2015 @ 08:14
44895 bytes -1 byte zopfli --i10000 --mls2048 --bsr14 --lazy --ohh September 8, 2015 @ 17:29
44896 bytes -4 bytes zopfli --i10000 --mls512 --bsr16 --lazy --ohh September 8, 2015 @ 16:32
44900 bytes -2 bytes zopfli --i10000 --mls512 --bsr6 --lazy --ohh September 8, 2015 @ 16:28
44902 bytes -4 bytes zopfli --i1000 --mls2048 --bsr13 --lazy --ohh September 7, 2015 @ 18:13
44906 bytes -1 byte zopfli --i1000 --mls2048 --bsr9 --lazy --ohh September 7, 2015 @ 18:13
44907 bytes -1 byte zopfli --i1000 --mls1024 --bsr16 --lazy --ohh September 7, 2015 @ 18:12
44908 bytes zopfli --i100 --mls4096 --bsr8 --lazy --ohh September 7, 2015 @ 16:56

If there are multiple parameter sets yielding the same compressed size, only the first one found is shown.

Most recent activity on July 11, 2016 @ 15:53.

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
44911 44918 44917 44919 44918 44918 44929 44910 44911 44914 44913 44913 44911 44913 44928
44922 44919 44918 44922 44927 44930 44911 44909 44915 44912 44913 44911 44904 44902 44928
44908 44915 44924 44925 44911 44913 44900 44898 44900 44901 44911 44902 44902 44901 44913
44914 44921 44917 44898 44909 44900 44901 44903 44908 44902 44910 44908 44900 44906 44912
44897 44918 44911 44910 44909 44917 44901 44900 44909 44908 44901 44897 44906 44902 44911
44910 44918 44917 44919 44910 44902 44891 44893 44909 44911 44901 44908 44904 44904 44910
44909 44918 44917 44911 44904 44900 44901 44893 44910 44909 44899 44909 44902 44902 44909
44920 44918 44918 44910 44908 44904 44901 44901 44904 44912 44899 44902 44900 44902 44931
44913 44907 44912 44907 44905 44904 44901 44890 44909 44899 44900 44898 44897 44901 44927
44900 44902 44917 44925 44910 44922 44893 44890 44909 44908 44897 44898 44899 44902 44928
44911 44918 44921 44920 44910 44902 44900 44889 44913 44916 44895 44910 44900 44902 44904
44916 44903 44917 44909 44909 44900 44902 44895 44909 44903 44911 44909 44899 44902 44912
44903 44918 44918 44911 44908 44900 44889 44900 44896 44900 44897 44905 44901 44902 44899
44901 44918 44917 44907 44909 44903 44908 44889 44894 44907 44894 44908 44904 44901 44910
44899 44918 44917 44908 44917 44911 44902 44892 44910 44897 44897 44900 44899 44902 44911
44911 44916 44917 44919 44909 44917 44901 44891 44904 44908 44899 44894 44899 44902 44927
44911 44918 44918 44910 44919 44919 44901 44891 44912 44907 44901 44908 44903 44902 44910
44903 44890 44908 44909 44910 44901 44890 44889 44909 44908 44899 44909 44904 44902 44909
44905 44918 44910 44910 44900 44901 44900 44902 44909 44909 44913 44909 44899 44902 44913
44904 44918 44908 44910 44908 44902 44901 44901 44905 44910 44901 44895 44899 44902 44908
44911 44918 44917 44908 44917 44918 44900 44891 44909 44908 44896 44895 44899 44901 44901
44904 44918 44917 44909 44910 44900 44901 44895 44912 44911 44898 44908 44900 44901 44927
44910 44918 44918 44907 44909 44903 44896 44889 44909 44909 44894 44908 44900 44902 44924

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 44906 bytes 100%
1,000 44897 bytes -9 bytes 100%
10,000 44890 bytes -7 bytes 100%
100,000 44889 bytes -1 byte 2.61%
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
44990 bytes +101 bytes (+0.22%)
44993 bytes +104 bytes (+0.23%) +3 bytes
45004 bytes +115 bytes (+0.26%) +14 bytes
45042 bytes +153 bytes (+0.34%) +52 bytes
45058 bytes +169 bytes (+0.38%) +68 bytes
45101 bytes +212 bytes (+0.47%) +111 bytes
45124 bytes +235 bytes (+0.52%) +134 bytes
45106 bytes +217 bytes (+0.48%) +116 bytes
45106 bytes +217 bytes (+0.48%) +116 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 35821 bytes -9068 bytes (-20.20%)
RAR (proprietary) RAR rar a -m5 -md64m -mc63:128t -mt1 37390 bytes -7499 bytes (-16.71%)
PPMd (Wikipedia) 7zip 7za a -mx=9 -m0=ppmd 39223 bytes -5666 bytes (-12.62%)
Brotli (Wikipedia) brotli brotli -q 11 41258 bytes -3631 bytes (-8.09%)
Burrows-Wheeler transform (Wikipedia) bzip2 bzip2 -9 41974 bytes -2915 bytes (-6.49%)
LZMA2 (Wikipedia) xz xz -9 42652 bytes -2237 bytes (-4.98%)
ZSTD (Wikipedia) zstd zstd -19 43819 bytes -1070 bytes (-2.38%)

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