Choose a version:
14% The original file has 1147843 bytes (1,120.9k) and is available from the project website.
There you can find the official minified version, too, which brings down the size to 157852 bytes (154.2k, 14%).

After GZIP compression these minified files vary in size:
Boot
  64090 bytes (62.6k)
CDN, direct link
cdnjs
  56004 bytes (54.7k)
CDN, direct link
gzip -6 (default)
  55632 bytes (54.3k)
local copy
cdnhttps
  55617 bytes (54.3k)
CDN, direct link
Google
  55572 bytes (54.3k)
CDN, direct link
gzip -9
  55538 bytes (54.2k)
local copy
libdeflate -12
  53818 bytes (52.6k)
local copy
7zip -mx=9 -tgzip
  53800 bytes (52.5k)
local copy
kzip -s0 -rn -b8
  53734 bytes (52.5k)
local copy
pigz -11 -n
  53721 bytes (52.5k)
local copy
Zopfli
  53644 bytes (52.4k)
local copy
Zopfli (defluff)
  53643 bytes (52.4k)
local copy

perma-link to the smallest file on my server:
http://minime.stephan-brumme.com/files/angularjs/angular-1.5.4.min.js

You will automatically get the smallest AngularJS 1.5.4 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 1928 bytes by using my AngularJS 1.5.4 Zopfli version instead of the best available CDN (3.59% smaller than Google, 53644 vs. 55572 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 --mls4 --bsr15 --lazy --ohh

(found April 15, 2016)
Description Value Parameter
iterations 1000000  --i1000000
maximum blocks 8  --mb8
maximum length score 4  --mls4
block splitting recursion 15  --bsr15
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 (53643 bytes).

Verify file integrity

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

MD5:
curl --silent --compressed https://code.angularjs.org/1.5.4/angular.min.js --location | md5sum
c9c9208f93bf772de18eab3108537beb  -
curl --silent --compressed http://minime.stephan-brumme.com/files/angularjs/angular-1.5.4.min.zopfli.js.gz | md5sum
c9c9208f93bf772de18eab3108537beb  -

SHA1:
curl --silent --compressed https://code.angularjs.org/1.5.4/angular.min.js --location | sha1sum
c7adb3432d16bd06f115b4cca3a6abf0915c6203  -
curl --silent --compressed http://minime.stephan-brumme.com/files/angularjs/angular-1.5.4.min.zopfli.js.gz | sha1sum
c7adb3432d16bd06f115b4cca3a6abf0915c6203  -

All listed CDNs deliver identical contents:
CDN Size (compressed) MD5 (uncompressed) Timestamp
Boot 64090 bytes c9c9208f93bf772de18eab3108537beb May 3, 2016 @ 10:37
cdnjs 56004 bytes c9c9208f93bf772de18eab3108537beb April 14, 2016 @ 11:31
cdnhttps 55617 bytes c9c9208f93bf772de18eab3108537beb November 22, 2016 @ 16:29
Google 55572 bytes c9c9208f93bf772de18eab3108537beb June 2, 2016 @ 00:19

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
53644 bytes -3 bytes zopfli --i1000000 --mls4 --bsr15 --lazy --ohh April 15, 2016 @ 20:13
53647 bytes -4 bytes zopfli --i100000 --mls4 --bsr15 --lazy --ohh April 14, 2016 @ 17:21
53651 bytes -1 byte zopfli --i10000 --mls4 --bsr15 --lazy --ohh April 14, 2016 @ 16:04
53652 bytes -2 bytes zopfli --i100000 --mls16 --bsr11 --lazy --ohh April 14, 2016 @ 13:03
53654 bytes -5 bytes zopfli --i10000 --mls16 --bsr11 --lazy --ohh April 14, 2016 @ 12:00
53659 bytes -18 bytes zopfli --i1000 --mls16 --bsr11 --lazy --ohh April 14, 2016 @ 11:53
53677 bytes zopfli --i100 --mls16 --bsr11 --lazy --ohh April 14, 2016 @ 11:33

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
53711 53711 53712 53712 53713 53712 53698 53712 53705 53712 53713 53704 53709 53665 53712
53720 53692 53702 53694 53695 53693 53691 53695 53696 53694 53698 53699 53698 53658 53691
53681 53680 53683 53695 53680 53694 53686 53698 53687 53690 53682 53698 53698 53653 53690
53678 53715 53688 53678 53700 53695 53693 53689 53670 53674 53708 53699 53689 53662 53690
53681 53666 53680 53682 53687 53696 53699 53687 53697 53682 53678 53700 53704 53653 53690
53682 53661 53690 53689 53692 53689 53686 53688 53665 53671 53670 53688 53699 53664 53691
53696 53677 53677 53690 53691 53693 53694 53697 53687 53679 53670 53698 53688 53659 53691
53687 53671 53682 53652 53697 53693 53686 53697 53688 53680 53692 53701 53690 53682 53689
53679 53663 53677 53692 53682 53689 53692 53688 53687 53671 53673 53687 53697 53659 53685
53681 53667 53679 53689 53682 53693 53686 53688 53687 53682 53672 53698 53688 53653 53688
53680 53680 53679 53682 53681 53689 53689 53689 53687 53674 53689 53688 53691 53665 53691
53677 53644 53684 53681 53681 53693 53686 53687 53696 53672 53671 53699 53690 53666 53691
53677 53644 53681 53680 53682 53689 53690 53691 53665 53692 53670 53698 53689 53652 53690
53673 53681 53680 53684 53680 53675 53686 53688 53665 53671 53679 53701 53690 53653 53689
53683 53664 53681 53682 53681 53689 53693 53690 53687 53680 53669 53699 53690 53655 53689
53679 53674 53680 53681 53681 53680 53686 53690 53665 53679 53671 53687 53690 53654 53689
53680 53681 53679 53680 53681 53689 53686 53689 53665 53680 53673 53687 53690 53658 53689
53674 53673 53679 53682 53681 53688 53693 53670 53697 53680 53669 53698 53689 53659 53689
53681 53680 53680 53683 53682 53689 53686 53690 53666 53681 53673 53698 53690 53683 53690
53674 53682 53680 53691 53683 53695 53688 53688 53665 53693 53670 53688 53690 53661 53691
53673 53674 53681 53683 53679 53690 53686 53689 53665 53691 53671 53698 53693 53656 53688
53675 53678 53677 53679 53678 53691 53687 53688 53666 53669 53692 53689 53690 53660 53683
53675 53673 53690 53685 53677 53679 53675 53665 53667 53668 53671 53688 53690 53683 53689

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 53677 bytes 100%
1,000 53655 bytes -22 bytes 100%
10,000 53651 bytes -4 bytes 100%
100,000 53647 bytes -4 bytes 0.87%
1,000,000 53644 bytes -3 bytes 0.58%
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
53791 bytes +147 bytes (+0.27%) +57 bytes
53791 bytes +147 bytes (+0.27%) +57 bytes
53802 bytes +158 bytes (+0.29%) +68 bytes
53800 bytes +156 bytes (+0.29%) +66 bytes
53806 bytes +162 bytes (+0.30%) +72 bytes
53826 bytes +182 bytes (+0.34%) +92 bytes
53826 bytes +182 bytes (+0.34%) +92 bytes
53763 bytes +119 bytes (+0.22%) +29 bytes
53734 bytes +90 bytes (+0.17%)

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 41568 bytes -12076 bytes (-22.51%)
RAR (proprietary) RAR rar a -m5 -md64m -mc63:128t -mt1 43932 bytes -9712 bytes (-18.10%)
PPMd (Wikipedia) 7zip 7za a -mx=9 -m0=ppmd 45384 bytes -8260 bytes (-15.40%)
Brotli (Wikipedia) brotli brotli -q 11 48827 bytes -4817 bytes (-8.98%)
Burrows-Wheeler transform (Wikipedia) bzip2 bzip2 -9 49571 bytes -4073 bytes (-7.59%)
LZMA2 (Wikipedia) xz xz -9 50264 bytes -3380 bytes (-6.30%)
ZSTD (Wikipedia) zstd zstd -19 51743 bytes -1901 bytes (-3.54%)

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