Choose a version:
14% The original file has 1127642 bytes (1,101.2k) and is available from the project website.
There you can find the official minified version, too, which brings down the size to 154333 bytes (150.7k, 14%).

After GZIP compression these minified files vary in size:
Boot
  62779 bytes (61.3k)
CDN
cdnjs
  54976 bytes (53.7k)
CDN
gzip -6 (default)
  54571 bytes (53.3k)
local copy
cdnhttps
  54565 bytes (53.3k)
CDN
unpkg
  54565 bytes (53.3k)
CDN
Google
  54519 bytes (53.2k)
CDN
gzip -9
  54471 bytes (53.2k)
local copy
jsdelivr
  54451 bytes (53.2k)
CDN
7zip -mx=9 -tgzip
  52778 bytes (51.5k)
local copy
libdeflate -12
  52766 bytes (51.5k)
local copy
kzip -s0 -rn -b1
  52760 bytes (51.5k)
local copy
pigz -11 -n
  52684 bytes (51.4k)
local copy
Zopfli
  52616 bytes (51.4k)
local copy
Zopfli (defluff)
  52615 bytes (51.4k)
local copy

perma-link to the smallest file on my server:
http://minime.stephan-brumme.com/files/angularjs/angular-1.5.0.min.js

You will automatically get the smallest AngularJS 1.5.0 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 1835 bytes by using my AngularJS 1.5.0 Zopfli version instead of the best available CDN (3.49% smaller than jsdelivr, 52616 vs. 54451 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 --mls2 --bsr17 --lazy --ohh

(found February 9, 2016)
Description Value Parameter
iterations 1000000  --i1000000
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 (52615 bytes).

Verify file integrity

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

MD5:
curl --silent --compressed https://code.angularjs.org/1.5.0/angular.min.js --location | md5sum
8c9ac3aa67fee6aa599b4624398feba7  -
curl --silent --compressed http://minime.stephan-brumme.com/files/angularjs/angular-1.5.0.min.zopfli.js.gz | md5sum
8c9ac3aa67fee6aa599b4624398feba7  -

SHA1:
curl --silent --compressed https://code.angularjs.org/1.5.0/angular.min.js --location | sha1sum
0ff025e7c37c0d56654bcf2cc4de18ea50ead3b3  -
curl --silent --compressed http://minime.stephan-brumme.com/files/angularjs/angular-1.5.0.min.zopfli.js.gz | sha1sum
0ff025e7c37c0d56654bcf2cc4de18ea50ead3b3  -

All listed CDNs deliver identical contents:
CDN Size (compressed) MD5 (uncompressed) Timestamp
Boot 62779 bytes 8c9ac3aa67fee6aa599b4624398feba7 February 9, 2016 @ 19:45
cdnjs 54976 bytes 8c9ac3aa67fee6aa599b4624398feba7 February 6, 2016 @ 09:17
cdnhttps 54565 bytes 8c9ac3aa67fee6aa599b4624398feba7 November 22, 2016 @ 16:29
unpkg 54565 bytes 8c9ac3aa67fee6aa599b4624398feba7 July 11, 2016 @ 15:52
Google 54519 bytes 8c9ac3aa67fee6aa599b4624398feba7 February 5, 2016 @ 17:54
jsdelivr 54451 bytes 8c9ac3aa67fee6aa599b4624398feba7 February 10, 2016 @ 18:24

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
52616 bytes -4 bytes zopfli --i1000000 --mls2 --bsr17 --lazy --ohh February 9, 2016 @ 05:39
52620 bytes -4 bytes zopfli --i100000 --mls2 --bsr17 --lazy --ohh February 8, 2016 @ 15:41
52624 bytes -2 bytes zopfli --i10000 --mls2 --bsr17 --lazy --ohh February 8, 2016 @ 13:35
52626 bytes -24 bytes zopfli --i1000 --mls2 --bsr17 --lazy --ohh February 8, 2016 @ 13:18
52650 bytes zopfli --i100 --mls2 --bsr17 --lazy --ohh February 8, 2016 @ 11:52

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
52684 52684 52685 52685 52686 52687 52691 52687 52688 52689 52689 52679 52687 52686 52685
52686 52686 52672 52667 52668 52670 52675 52672 52666 52672 52675 52672 52672 52659 52681
52677 52674 52674 52682 52672 52673 52664 52669 52662 52673 52668 52671 52662 52623 52676
52637 52641 52682 52636 52669 52675 52676 52672 52662 52672 52672 52662 52676 52647 52679
52640 52641 52642 52637 52645 52636 52664 52673 52663 52677 52665 52666 52676 52656 52675
52684 52681 52682 52683 52673 52667 52665 52669 52659 52672 52673 52662 52669 52629 52680
52638 52635 52642 52659 52657 52671 52661 52667 52662 52673 52673 52658 52659 52625 52680
52648 52654 52646 52648 52651 52651 52661 52672 52660 52672 52672 52661 52662 52623 52681
52682 52679 52681 52674 52636 52671 52664 52672 52662 52660 52672 52673 52663 52624 52680
52637 52657 52672 52685 52661 52673 52666 52668 52661 52672 52673 52659 52668 52662 52680
52643 52656 52656 52643 52651 52657 52663 52673 52662 52672 52673 52661 52670 52637 52670
52691 52679 52683 52684 52639 52673 52661 52669 52661 52672 52673 52661 52658 52625 52670
52633 52666 52658 52685 52640 52643 52660 52670 52665 52667 52673 52658 52658 52632 52672
52616 52637 52641 52644 52642 52642 52661 52671 52667 52672 52672 52672 52660 52624 52672
52680 52662 52689 52685 52641 52672 52665 52670 52662 52672 52672 52658 52663 52625 52670
52638 52636 52639 52684 52638 52671 52660 52671 52661 52656 52673 52662 52663 52624 52670
52638 52637 52637 52641 52640 52640 52660 52669 52661 52672 52673 52659 52663 52630 52671
52638 52635 52640 52639 52645 52673 52660 52669 52661 52672 52673 52663 52663 52624 52669
52635 52635 52637 52638 52642 52667 52660 52671 52662 52672 52673 52661 52662 52629 52680
52642 52655 52652 52638 52659 52658 52667 52671 52661 52672 52673 52673 52661 52625 52671
52636 52655 52642 52659 52660 52655 52661 52671 52662 52672 52673 52666 52658 52629 52670
52637 52635 52639 52658 52645 52673 52659 52667 52662 52672 52670 52659 52662 52654 52677
52671 52638 52658 52659 52657 52663 52649 52657 52651 52661 52673 52659 52662 52623 52673

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 52650 bytes 100%
1,000 52626 bytes -24 bytes 100%
10,000 52624 bytes -2 bytes 100%
100,000 52620 bytes -4 bytes 3.48%
1,000,000 52616 bytes -4 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
52764 bytes +148 bytes (+0.28%) +4 bytes
52760 bytes +144 bytes (+0.27%)
52776 bytes +160 bytes (+0.30%) +16 bytes
52768 bytes +152 bytes (+0.29%) +8 bytes
52782 bytes +166 bytes (+0.32%) +22 bytes
52804 bytes +188 bytes (+0.36%) +44 bytes
52797 bytes +181 bytes (+0.34%) +37 bytes
52826 bytes +210 bytes (+0.40%) +66 bytes
52767 bytes +151 bytes (+0.29%) +7 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 41048 bytes -11568 bytes (-21.99%)
RAR (proprietary) RAR rar a -m5 -md64m -mc63:128t -mt1 43217 bytes -9399 bytes (-17.86%)
PPMd (Wikipedia) 7zip 7za a -mx=9 -m0=ppmd 44569 bytes -8047 bytes (-15.29%)
Brotli (Wikipedia) brotli brotli -q 11 47937 bytes -4679 bytes (-8.89%)
Burrows-Wheeler transform (Wikipedia) bzip2 bzip2 -9 48748 bytes -3868 bytes (-7.35%)
LZMA2 (Wikipedia) xz xz -9 49372 bytes -3244 bytes (-6.17%)
ZSTD (Wikipedia) zstd zstd -19 50810 bytes -1806 bytes (-3.43%)

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