Choose a version:
14% The original file has 788450 bytes (770.0k) and is available from the project website.
There you can find the official minified version, too, which brings down the size to 108025 bytes (105.5k, 14%).

After GZIP compression these minified files vary in size:
Boot
  45689 bytes (44.6k)
CDN, direct link
cdnjs
  40280 bytes (39.3k)
CDN, direct link
gzip -6 (default)
  40053 bytes (39.1k)
local copy
unpkg
  40038 bytes (39.1k)
CDN, direct link
cdnhttps
  40031 bytes (39.1k)
CDN, direct link
Google
  39984 bytes (39.0k)
CDN, direct link
gzip -9
  39984 bytes (39.0k)
local copy
7zip -mx=9 -tgzip
  38737 bytes (37.8k)
local copy
kzip -s0 -rn -b1
  38731 bytes (37.8k)
local copy
pigz -11 -n
  38714 bytes (37.8k)
local copy
libdeflate -12
  38710 bytes (37.8k)
local copy
Zopfli
  38661 bytes (37.8k)
local copy
Zopfli (defluff)
  38660 bytes (37.8k)
local copy

perma-link to the smallest file on my server:
http://minime.stephan-brumme.com/files/angularjs/angular-1.2.27.min.js

You will automatically get the smallest AngularJS 1.2.27 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 1323 bytes by using my AngularJS 1.2.27 Zopfli version instead of the best available CDN (3.42% smaller than Google, 38661 vs. 39984 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 --mls64 --bsr7 --lazy --ohh

(found November 28, 2015)
Description Value Parameter
iterations 100000  --i100000
maximum blocks 8  --mb8
maximum length score 64  --mls64
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 (38660 bytes).

Verify file integrity

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

MD5:
curl --silent --compressed https://code.angularjs.org/1.2.27/angular.min.js --location | md5sum
e8c606c78e44c131f7d98de9567d9e7d  -
curl --silent --compressed http://minime.stephan-brumme.com/files/angularjs/angular-1.2.27.min.zopfli.js.gz | md5sum
e8c606c78e44c131f7d98de9567d9e7d  -

SHA1:
curl --silent --compressed https://code.angularjs.org/1.2.27/angular.min.js --location | sha1sum
3c25c93f52b69d7b7bcf6f1055353cda1ff081a0  -
curl --silent --compressed http://minime.stephan-brumme.com/files/angularjs/angular-1.2.27.min.zopfli.js.gz | sha1sum
3c25c93f52b69d7b7bcf6f1055353cda1ff081a0  -

All listed CDNs deliver identical contents:
CDN Size (compressed) MD5 (uncompressed) Timestamp
Boot 45689 bytes e8c606c78e44c131f7d98de9567d9e7d March 18, 2015 @ 10:35
cdnjs 40280 bytes e8c606c78e44c131f7d98de9567d9e7d December 18, 2014 @ 18:00
unpkg 40038 bytes e8c606c78e44c131f7d98de9567d9e7d July 11, 2016 @ 15:54
cdnhttps 40031 bytes e8c606c78e44c131f7d98de9567d9e7d December 24, 2015 @ 07:32
Google 39984 bytes e8c606c78e44c131f7d98de9567d9e7d November 21, 2014 @ 00:16

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
38661 bytes -2 bytes zopfli --i100000 --mls64 --bsr7 --lazy --ohh November 28, 2015 @ 09:45
38663 bytes -3 bytes zopfli --i10000 --mls64 --bsr7 --lazy --ohh October 13, 2015 @ 22:56
38666 bytes -1 byte zopfli --i10000 --mls4096 --bsr8 --lazy --ohh September 9, 2015 @ 10:42
38667 bytes -1 byte zopfli --i10000 --mls4096 --bsr9 --lazy --ohh September 9, 2015 @ 10:06
38668 bytes -1 byte zopfli --i10000 --mls512 --bsr12 --lazy --ohh September 9, 2015 @ 09:37
38669 bytes -1 byte zopfli --i1000 --mls4096 --bsr8 --lazy --ohh September 7, 2015 @ 19:28
38670 bytes -3 bytes zopfli --i1000 --mls512 --bsr16 --lazy --ohh September 7, 2015 @ 19:27
38673 bytes zopfli --i100 --mls4096 --bsr14 --lazy --ohh September 7, 2015 @ 16:18

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 @ 15:54.

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
38672 38670 38671 38672 38672 38674 38673 38674 38674 38677 38684 38677 38679 38677 38670
38679 38679 38681 38678 38680 38680 38683 38681 38675 38679 38683 38667 38667 38676 38677
38666 38667 38664 38677 38678 38668 38668 38669 38669 38671 38670 38670 38679 38676 38679
38667 38669 38671 38669 38669 38661 38667 38682 38669 38674 38684 38674 38668 38673 38668
38668 38674 38673 38671 38669 38667 38667 38668 38677 38673 38668 38666 38678 38675 38666
38680 38679 38697 38678 38675 38688 38666 38687 38681 38687 38684 38667 38669 38675 38677
38672 38679 38669 38688 38684 38684 38681 38689 38684 38686 38684 38667 38668 38675 38675
38669 38669 38671 38669 38687 38687 38667 38681 38679 38686 38685 38686 38674 38675 38681
38668 38668 38667 38670 38667 38668 38667 38680 38668 38676 38685 38667 38668 38675 38676
38667 38668 38667 38668 38666 38669 38666 38667 38678 38674 38668 38668 38668 38675 38669
38666 38667 38669 38671 38670 38668 38667 38675 38680 38674 38680 38667 38670 38675 38667
38667 38670 38674 38688 38669 38668 38667 38681 38669 38673 38676 38667 38667 38675 38668
38675 38667 38700 38686 38688 38686 38670 38688 38668 38674 38684 38678 38667 38675 38680
38670 38670 38701 38688 38700 38701 38670 38682 38678 38688 38689 38685 38667 38675 38667
38669 38668 38669 38671 38669 38671 38667 38668 38668 38673 38668 38667 38667 38675 38667
38666 38668 38671 38669 38669 38667 38666 38681 38667 38674 38678 38674 38668 38675 38668
38672 38671 38669 38671 38669 38667 38668 38668 38668 38673 38675 38674 38667 38675 38676
38668 38671 38672 38669 38667 38666 38676 38680 38680 38676 38678 38667 38668 38675 38678
38681 38668 38670 38668 38666 38667 38667 38669 38679 38674 38684 38674 38669 38675 38667
38668 38668 38672 38680 38667 38667 38667 38688 38668 38674 38667 38668 38667 38676 38678
38668 38667 38673 38671 38666 38667 38666 38681 38676 38675 38685 38675 38667 38675 38676
38669 38668 38670 38667 38667 38668 38666 38679 38676 38674 38667 38666 38678 38675 38667
38666 38668 38669 38669 38669 38667 38666 38676 38679 38673 38669 38674 38667 38675 38677

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 38670 bytes 100%
1,000 38666 bytes -4 bytes 100%
10,000 38663 bytes -3 bytes 100%
100,000 38661 bytes -2 bytes 0.58%
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
38733 bytes +72 bytes (+0.19%) +2 bytes
38731 bytes +70 bytes (+0.18%)
38760 bytes +99 bytes (+0.26%) +29 bytes
38788 bytes +127 bytes (+0.33%) +57 bytes
38825 bytes +164 bytes (+0.42%) +94 bytes
38849 bytes +188 bytes (+0.49%) +118 bytes
38813 bytes +152 bytes (+0.39%) +82 bytes
38795 bytes +134 bytes (+0.35%) +64 bytes
38811 bytes +150 bytes (+0.39%) +80 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 31266 bytes -7395 bytes (-19.13%)
RAR (proprietary) RAR rar a -m5 -md64m -mc63:128t -mt1 32553 bytes -6108 bytes (-15.80%)
PPMd (Wikipedia) 7zip 7za a -mx=9 -m0=ppmd 34084 bytes -4577 bytes (-11.84%)
Brotli (Wikipedia) brotli brotli -q 11 35517 bytes -3144 bytes (-8.13%)
Burrows-Wheeler transform (Wikipedia) bzip2 bzip2 -9 36469 bytes -2192 bytes (-5.67%)
LZMA2 (Wikipedia) xz xz -9 36884 bytes -1777 bytes (-4.60%)
ZSTD (Wikipedia) zstd zstd -19 37859 bytes -802 bytes (-2.07%)

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