Choose a version:
13% The original file has 1284319 bytes (1,254.2k) and is available from the project website.
There you can find the official minified version, too, which brings down the size to 169902 bytes (165.9k, 13%).

After GZIP compression these minified files vary in size:
Boot
  68588 bytes (67.0k)
CDN
cdnjs
  59709 bytes (58.3k)
CDN
unpkg
  59276 bytes (57.9k)
CDN
gzip -6 (default)
  59247 bytes (57.9k)
local copy
gzip -9
  59110 bytes (57.7k)
local copy
7zip -mx=9 -tgzip
  57292 bytes (55.9k)
local copy
kzip -s0 -rn -b0
  57285 bytes (55.9k)
local copy
libdeflate -12
  57284 bytes (55.9k)
local copy
pigz -11 -n
  57205 bytes (55.9k)
local copy
Zopfli
  57162 bytes (55.8k)
local copy
Zopfli (defluff)
  57161 bytes (55.8k)
local copy

perma-link to the smallest file on my server:
http://minime.stephan-brumme.com/files/angularjs/angular-1.6.8.min.js

You will automatically get the smallest AngularJS 1.6.8 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 2114 bytes by using my AngularJS 1.6.8 Zopfli version instead of the best available CDN (3.70% smaller than unpkg, 57162 vs. 59276 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 --mls512 --bsr16 --lazy --ohh

(found December 29, 2017)
Description Value Parameter
iterations 1000000  --i1000000
maximum blocks 8  --mb8
maximum length score 512  --mls512
block splitting recursion 16  --bsr16
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 (57161 bytes).

Verify file integrity

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

MD5:
curl --silent --compressed https://code.angularjs.org/1.6.8/angular.min.js --location | md5sum
e37e61b4b4aa1fbc6f3ba7feda0d1281  -
curl --silent --compressed http://minime.stephan-brumme.com/files/angularjs/angular-1.6.8.min.zopfli.js.gz | md5sum
e37e61b4b4aa1fbc6f3ba7feda0d1281  -

SHA1:
curl --silent --compressed https://code.angularjs.org/1.6.8/angular.min.js --location | sha1sum
0cb072a61265467ab11e315f43ad47967d470737  -
curl --silent --compressed http://minime.stephan-brumme.com/files/angularjs/angular-1.6.8.min.zopfli.js.gz | sha1sum
0cb072a61265467ab11e315f43ad47967d470737  -

All listed CDNs deliver identical contents:
CDN Size (compressed) MD5 (uncompressed) Timestamp
Boot 68588 bytes e37e61b4b4aa1fbc6f3ba7feda0d1281 December 24, 2017 @ 18:34
cdnjs 59709 bytes e37e61b4b4aa1fbc6f3ba7feda0d1281 December 21, 2017 @ 23:48
unpkg 59276 bytes e37e61b4b4aa1fbc6f3ba7feda0d1281 (invalid)

Note: only the MD5 hashes are shown to keep things simple.

Other Versions

Available AngularJS versions at minime.stephan-brumme.com:

1.6.8, 1.6.7, 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
57162 bytes -3 bytes zopfli --i1000000 --mls512 --bsr16 --lazy --ohh December 29, 2017 @ 16:21
57165 bytes -4 bytes zopfli --i100000 --mls512 --bsr16 --lazy --ohh December 28, 2017 @ 12:36
57169 bytes -4 bytes zopfli --i10000 --mls512 --bsr16 --lazy --ohh December 28, 2017 @ 11:48
57173 bytes -3 bytes zopfli --i1000 --mls512 --bsr16 --lazy --ohh December 28, 2017 @ 11:20
57176 bytes -22 bytes zopfli --i1000 --mls512 --bsr10 --lazy --ohh December 28, 2017 @ 11:19
57198 bytes zopfli --i100 --mls512 --bsr15 --lazy --ohh December 28, 2017 @ 10:50

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

Most recent activity on December 29, 2017 @ 21:59.

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
57222 57218 57217 57218 57224 57225 57221 57224 57223 57217 57290 57203 57290 57208 57218
57204 57205 57204 57204 57213 57199 57208 57193 57193 57203 57196 57200 57191 57188 57199
57207 57208 57200 57209 57210 57206 57208 57200 57192 57195 57193 57191 57193 57182 57200
57209 57201 57201 57203 57201 57202 57189 57198 57183 57192 57193 57191 57195 57193 57208
57201 57200 57197 57200 57197 57182 57200 57197 57183 57192 57187 57198 57195 57188 57215
57217 57205 57203 57209 57205 57183 57204 57182 57190 57200 57195 57191 57190 57182 57195
57207 57186 57188 57185 57188 57172 57184 57184 57172 57173 57181 57179 57190 57190 57198
57189 57187 57189 57185 57187 57185 57184 57184 57179 57181 57180 57177 57194 57190 57193
57212 57212 57205 57200 57186 57187 57183 57187 57171 57181 57180 57193 57181 57183 57210
57190 57191 57187 57201 57188 57172 57183 57185 57166 57194 57180 57190 57180 57189 57193
57221 57190 57186 57189 57189 57187 57184 57184 57171 57180 57183 57177 57177 57189 57199
57211 57186 57204 57187 57188 57188 57178 57184 57172 57181 57180 57192 57181 57182 57221
57191 57193 57181 57187 57188 57167 57186 57184 57162 57180 57180 57180 57181 57184 57195
57190 57189 57185 57188 57187 57173 57184 57184 57171 57181 57179 57191 57179 57182 57219
57206 57185 57184 57183 57184 57183 57186 57182 57171 57183 57182 57179 57181 57185 57208
57188 57189 57185 57198 57187 57172 57187 57188 57172 57180 57181 57193 57193 57183 57219
57190 57189 57186 57198 57187 57184 57184 57183 57166 57180 57177 57181 57193 57183 57210
57199 57192 57185 57187 57186 57171 57186 57164 57178 57181 57178 57192 57190 57184 57210
57190 57190 57194 57188 57185 57186 57187 57187 57179 57179 57180 57180 57193 57185 57216
57187 57187 57184 57197 57188 57187 57188 57185 57171 57180 57181 57176 57193 57190 57200
57191 57194 57187 57186 57193 57185 57185 57163 57173 57179 57180 57191 57182 57184 57199
57186 57187 57184 57187 57187 57186 57184 57180 57179 57180 57180 57177 57178 57183 57210
57203 57200 57198 57200 57190 57172 57192 57188 57171 57181 57179 57178 57191 57183 57198

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 57198 bytes 100%
1,000 57173 bytes -25 bytes 100%
10,000 57169 bytes -4 bytes 100%
100,000 57165 bytes -4 bytes 1.74%
1,000,000 57162 bytes -3 bytes 0.87%
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
57285 bytes +123 bytes (+0.22%)
57290 bytes +128 bytes (+0.22%) +5 bytes
57304 bytes +142 bytes (+0.25%) +19 bytes
57307 bytes +145 bytes (+0.25%) +22 bytes
57324 bytes +162 bytes (+0.28%) +39 bytes
57319 bytes +157 bytes (+0.27%) +34 bytes
57311 bytes +149 bytes (+0.26%) +26 bytes
57346 bytes +184 bytes (+0.32%) +61 bytes
57359 bytes +197 bytes (+0.34%) +74 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 44139 bytes -13023 bytes (-22.78%)
RAR (proprietary) RAR rar a -m5 -md64m -mc63:128t -mt1 46654 bytes -10508 bytes (-18.38%)
PPMd (Wikipedia) 7zip 7za a -mx=9 -m0=ppmd 48382 bytes -8780 bytes (-15.36%)
Brotli (Wikipedia) brotli brotli -q 11 51922 bytes -5240 bytes (-9.17%)
Burrows-Wheeler transform (Wikipedia) bzip2 bzip2 -9 52704 bytes -4458 bytes (-7.80%)
LZMA2 (Wikipedia) xz xz -9 53432 bytes -3730 bytes (-6.53%)
ZSTD (Wikipedia) zstd zstd -19 55004 bytes -2158 bytes (-3.78%)

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 2018.
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