Choose a version:
14% The original file has 1174125 bytes (1,146.6k) and is available from the project website.
There you can find the official minified version, too, which brings down the size to 159127 bytes (155.4k, 14%).

After GZIP compression these minified files vary in size:
Boot
  64513 bytes (63.0k)
CDN, direct link
cdnjs
  56419 bytes (55.1k)
CDN, direct link
gzip -6 (default)
  56036 bytes (54.7k)
local copy
cdnhttps
  56034 bytes (54.7k)
CDN, direct link
unpkg
  56034 bytes (54.7k)
CDN, direct link
Google
  55987 bytes (54.7k)
CDN, direct link
gzip -9
  55952 bytes (54.6k)
local copy
7zip -mx=9 -tgzip
  54179 bytes (52.9k)
local copy
kzip -s0 -rn -b0
  54163 bytes (52.9k)
local copy
libdeflate -12
  54163 bytes (52.9k)
local copy
pigz -11 -n
  54115 bytes (52.8k)
local copy
Zopfli
  54031 bytes (52.8k)
local copy
Zopfli (defluff)
  54029 bytes (52.8k)
local copy

perma-link to the smallest file on my server:
http://minime.stephan-brumme.com/files/angularjs/angular-1.5.7.min.js

You will automatically get the smallest AngularJS 1.5.7 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 1956 bytes by using my AngularJS 1.5.7 Zopfli version instead of the best available CDN (3.62% smaller than Google, 54031 vs. 55987 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 --mls32 --bsr10 --lazy --ohh

(found June 17, 2016)
Description Value Parameter
iterations 1000000  --i1000000
maximum blocks 8  --mb8
maximum length score 32  --mls32
block splitting recursion 10  --bsr10
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 2 more bytes (54029 bytes).

Verify file integrity

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

MD5:
curl --silent --compressed https://code.angularjs.org/1.5.7/angular.min.js --location | md5sum
a66e673119c25eed3f5a3144345988bc  -
curl --silent --compressed http://minime.stephan-brumme.com/files/angularjs/angular-1.5.7.min.zopfli.js.gz | md5sum
a66e673119c25eed3f5a3144345988bc  -

SHA1:
curl --silent --compressed https://code.angularjs.org/1.5.7/angular.min.js --location | sha1sum
022f3ec8815b7e846d0701328f8128543729a616  -
curl --silent --compressed http://minime.stephan-brumme.com/files/angularjs/angular-1.5.7.min.zopfli.js.gz | sha1sum
022f3ec8815b7e846d0701328f8128543729a616  -

All listed CDNs deliver identical contents:
CDN Size (compressed) MD5 (uncompressed) Timestamp
Boot 64513 bytes a66e673119c25eed3f5a3144345988bc June 16, 2016 @ 10:07
cdnjs 56419 bytes a66e673119c25eed3f5a3144345988bc June 16, 2016 @ 07:46
cdnhttps 56034 bytes a66e673119c25eed3f5a3144345988bc November 22, 2016 @ 16:29
unpkg 56034 bytes a66e673119c25eed3f5a3144345988bc July 11, 2016 @ 15:51
Google 55987 bytes a66e673119c25eed3f5a3144345988bc June 17, 2016 @ 20:33

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
54031 bytes -2 bytes zopfli --i1000000 --mls32 --bsr10 --lazy --ohh June 17, 2016 @ 16:29
54033 bytes -7 bytes zopfli --i100000 --mls32 --bsr10 --lazy --ohh June 16, 2016 @ 13:10
54040 bytes -7 bytes zopfli --i10000 --mls32 --bsr10 --lazy --ohh June 16, 2016 @ 11:55
54047 bytes -7 bytes zopfli --i1000 --mls32 --bsr10 --lazy --ohh June 16, 2016 @ 11:45
54054 bytes -1 byte zopfli --i1000 --mls16 --bsr8 --lazy --ohh June 16, 2016 @ 11:42
54055 bytes -8 bytes zopfli --i1000 --mls16 --bsr14 --lazy --ohh June 16, 2016 @ 11:41
54063 bytes zopfli --i100 --mls16 --bsr14 --lazy --ohh June 16, 2016 @ 10:57

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
54098 54098 54099 54097 54099 54097 54098 54097 54097 54097 54097 54086 54182 54078 54096
54079 54078 54090 54085 54082 54080 54083 54085 54081 54074 54074 54075 54075 54080 54086
54087 54088 54087 54086 54082 54079 54082 54080 54080 54081 54081 54078 54080 54073 54080
54081 54077 54088 54065 54055 54087 54088 54084 54080 54080 54079 54072 54088 54070 54085
54070 54069 54055 54049 54081 54080 54084 54084 54082 54077 54081 54078 54086 54078 54081
54081 54074 54087 54086 54081 54081 54084 54080 54080 54084 54073 54072 54080 54070 54079
54094 54087 54083 54048 54031 54082 54082 54080 54080 54080 54073 54071 54082 54072 54078
54095 54082 54094 54061 54080 54085 54081 54080 54081 54080 54079 54074 54080 54071 54080
54091 54100 54095 54094 54082 54077 54081 54083 54081 54083 54072 54072 54080 54073 54078
54080 54082 54087 54070 54086 54080 54084 54083 54080 54084 54079 54072 54080 54074 54080
54078 54072 54088 54041 54083 54085 54083 54081 54081 54080 54080 54075 54080 54069 54078
54078 54071 54064 54072 54090 54080 54083 54082 54080 54080 54080 54072 54080 54078 54079
54073 54063 54062 54049 54049 54079 54080 54079 54080 54077 54080 54072 54080 54073 54080
54072 54065 54055 54052 54040 54080 54084 54080 54080 54080 54080 54071 54080 54075 54080
54078 54080 54088 54085 54084 54084 54082 54083 54081 54076 54071 54071 54080 54072 54078
54078 54068 54087 54076 54082 54085 54085 54080 54080 54076 54080 54082 54080 54070 54080
54073 54074 54050 54060 54051 54084 54084 54080 54081 54076 54080 54072 54080 54071 54080
54081 54073 54085 54070 54051 54074 54081 54080 54080 54083 54071 54072 54080 54073 54079
54071 54071 54086 54071 54090 54083 54081 54080 54080 54076 54080 54071 54080 54070 54079
54078 54073 54087 54086 54083 54080 54084 54082 54080 54080 54081 54074 54080 54074 54079
54078 54072 54086 54087 54090 54073 54080 54082 54080 54067 54080 54082 54081 54071 54080
54076 54079 54089 54082 54081 54083 54082 54082 54083 54076 54080 54074 54080 54070 54080
54083 54079 54082 54084 54075 54076 54076 54075 54075 54076 54072 54072 54080 54072 54080

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 54063 bytes 100%
1,000 54047 bytes -16 bytes 100%
10,000 54040 bytes -7 bytes 100%
100,000 54033 bytes -7 bytes 0.87%
1,000,000 54031 bytes -2 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
54163 bytes +132 bytes (+0.24%)
54180 bytes +149 bytes (+0.28%) +17 bytes
54178 bytes +147 bytes (+0.27%) +15 bytes
54194 bytes +163 bytes (+0.30%) +31 bytes
54194 bytes +163 bytes (+0.30%) +31 bytes
54207 bytes +176 bytes (+0.33%) +44 bytes
54218 bytes +187 bytes (+0.35%) +55 bytes
54232 bytes +201 bytes (+0.37%) +69 bytes
54264 bytes +233 bytes (+0.43%) +101 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 41942 bytes -12089 bytes (-22.37%)
RAR (proprietary) RAR rar a -m5 -md64m -mc63:128t -mt1 44237 bytes -9794 bytes (-18.13%)
PPMd (Wikipedia) 7zip 7za a -mx=9 -m0=ppmd 45721 bytes -8310 bytes (-15.38%)
Brotli (Wikipedia) brotli brotli -q 11 49218 bytes -4813 bytes (-8.91%)
Burrows-Wheeler transform (Wikipedia) bzip2 bzip2 -9 49937 bytes -4094 bytes (-7.58%)
LZMA2 (Wikipedia) xz xz -9 50664 bytes -3367 bytes (-6.23%)
ZSTD (Wikipedia) zstd zstd -19 52140 bytes -1891 bytes (-3.50%)

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