Choose a version:
13% The original file has 948508 bytes (926.3k) and is available from the project website.
There you can find the official minified version, too, which brings down the size to 125282 bytes (122.3k, 13%).

After GZIP compression these minified files vary in size:
Boot
  52720 bytes (51.5k)
CDN, direct link
Baidu
  46381 bytes (45.3k)
CDN, direct link
cdnjs
  46248 bytes (45.2k)
CDN, direct link
unpkg
  45954 bytes (44.9k)
CDN, direct link
gzip -6 (default)
  45940 bytes (44.9k)
local copy
cdnhttps
  45919 bytes (44.8k)
CDN, direct link
Google
  45879 bytes (44.8k)
CDN, direct link
gzip -9
  45847 bytes (44.8k)
local copy
Yandex
  45845 bytes (44.8k)
CDN, direct link
7zip -mx=9 -tgzip
  44474 bytes (43.4k)
local copy
kzip -s0 -rn -b1
  44431 bytes (43.4k)
local copy
libdeflate -12
  44409 bytes (43.4k)
local copy
pigz -11 -n
  44380 bytes (43.3k)
local copy
Zopfli
  44337 bytes (43.3k)
local copy
Zopfli (defluff)
  44336 bytes (43.3k)
local copy

perma-link to the smallest file on my server:
http://minime.stephan-brumme.com/files/angularjs/angular-1.3.7.min.js

You will automatically get the smallest AngularJS 1.3.7 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 1508 bytes by using my AngularJS 1.3.7 Zopfli version instead of the best available CDN (3.40% smaller than Yandex, 44337 vs. 45845 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 --mls8192 --bsr17 --lazy --ohh

(found November 30, 2015)
Description Value Parameter
iterations 100000  --i100000
maximum blocks 8  --mb8
maximum length score 8192  --mls8192
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 (44336 bytes).

Verify file integrity

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

MD5:
curl --silent --compressed https://code.angularjs.org/1.3.7/angular.min.js --location | md5sum
6a7688284ec564db3d40fdde9690d2c8  -
curl --silent --compressed http://minime.stephan-brumme.com/files/angularjs/angular-1.3.7.min.zopfli.js.gz | md5sum
6a7688284ec564db3d40fdde9690d2c8  -

SHA1:
curl --silent --compressed https://code.angularjs.org/1.3.7/angular.min.js --location | sha1sum
def7bf4d78b20f5f02e0855fe756d5e4606703d0  -
curl --silent --compressed http://minime.stephan-brumme.com/files/angularjs/angular-1.3.7.min.zopfli.js.gz | sha1sum
def7bf4d78b20f5f02e0855fe756d5e4606703d0  -

These CDNs send you the original file:
CDN Size (compressed) MD5 (uncompressed) Timestamp
Boot 52720 bytes 6a7688284ec564db3d40fdde9690d2c8 March 18, 2015 @ 11:06
cdnjs 46248 bytes 6a7688284ec564db3d40fdde9690d2c8 December 17, 2014 @ 23:30
unpkg 45954 bytes 6a7688284ec564db3d40fdde9690d2c8 July 11, 2016 @ 15:53
cdnhttps 45919 bytes 6a7688284ec564db3d40fdde9690d2c8 December 24, 2015 @ 07:32
Google 45879 bytes 6a7688284ec564db3d40fdde9690d2c8 December 16, 2014 @ 00:03
Yandex 45845 bytes 6a7688284ec564db3d40fdde9690d2c8 June 11, 2015 @ 14:17

And some CDNs send you a different file:
CDN Size (compressed) MD5 (uncompressed) Comment / Diff Timestamp
Baidu 46381 bytes 4de222469ed38a899382f4f8fb27a220 only whitespaces differ April 3, 2015 @ 04:57

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
44337 bytes -2 bytes zopfli --i100000 --mls8192 --bsr17 --lazy --ohh November 30, 2015 @ 11:25
44339 bytes -2 bytes zopfli --i10000 --mls8192 --bsr10 --lazy --ohh September 8, 2015 @ 07:22
44341 bytes -2 bytes zopfli --i1000 --mls8192 --bsr10 --lazy --ohh September 7, 2015 @ 17:50
44343 bytes -1 byte zopfli --i1000 --mls2048 --bsr9 --lazy --ohh September 7, 2015 @ 17:49
44344 bytes -1 byte zopfli --i1000 --mls2048 --bsr13 --lazy --ohh September 7, 2015 @ 17:48
44345 bytes -1 byte zopfli --i1000 --mls2048 --bsr12 --lazy --ohh September 7, 2015 @ 17:48
44346 bytes -4 bytes zopfli --i1000 --mls2048 --bsr14 --lazy --ohh September 7, 2015 @ 17:48
44350 bytes -1 byte zopfli --i1000 --mls512 --bsr13 --lazy --ohh September 7, 2015 @ 17:47
44351 bytes -4 bytes zopfli --i1000 --mls512 --bsr12 --lazy --ohh September 7, 2015 @ 17:46
44355 bytes -8 bytes zopfli --i1000 --mls512 --bsr6 --lazy --ohh September 7, 2015 @ 17:45
44363 bytes zopfli --i100 --mls2048 --bsr9 --lazy --ohh September 7, 2015 @ 16:21

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 @ 15:53.

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
44366 44366 44366 44367 44371 44371 44362 44371 44359 44361 44364 44362 44358 44358 44350
44370 44366 44365 44366 44365 44367 44367 44360 44349 44361 44346 44349 44365 44347 44377
44353 44350 44353 44355 44349 44355 44353 44349 44353 44350 44343 44349 44348 44350 44357
44350 44355 44348 44352 44353 44350 44354 44349 44356 44349 44364 44349 44348 44348 44353
44358 44361 44357 44361 44348 44350 44354 44341 44350 44350 44343 44350 44364 44344 44363
44371 44355 44354 44362 44364 44365 44367 44340 44352 44348 44341 44349 44362 44342 44374
44360 44352 44354 44356 44349 44364 44353 44340 44350 44350 44344 44350 44337 44347 44356
44378 44361 44373 44364 44350 44359 44354 44356 44347 44350 44344 44349 44348 44344 44374
44356 44355 44357 44354 44349 44365 44354 44344 44347 44349 44344 44348 44345 44349 44371
44364 44361 44353 44352 44355 44365 44353 44343 44346 44350 44343 44348 44348 44347 44372
44356 44355 44366 44351 44363 44363 44364 44342 44350 44349 44342 44349 44348 44341 44382
44355 44352 44354 44351 44356 44350 44353 44342 44350 44350 44341 44349 44346 44343 44353
44355 44353 44352 44350 44349 44363 44353 44344 44345 44351 44348 44350 44345 44343 44380
44351 44350 44365 44353 44351 44352 44358 44344 44347 44348 44345 44352 44337 44347 44359
44361 44353 44355 44353 44353 44364 44364 44355 44345 44350 44344 44349 44353 44337 44380
44358 44361 44363 44352 44352 44363 44354 44358 44349 44349 44343 44348 44340 44345 44382
44359 44354 44356 44355 44352 44364 44363 44345 44343 44349 44352 44351 44349 44343 44353
44355 44356 44356 44349 44350 44350 44353 44345 44349 44352 44345 44349 44363 44344 44355
44372 44366 44348 44349 44349 44351 44353 44352 44347 44348 44343 44349 44349 44347 44354
44351 44353 44347 44352 44349 44364 44353 44345 44344 44349 44343 44352 44337 44345 44379
44355 44353 44357 44364 44354 44354 44364 44340 44344 44350 44344 44351 44341 44348 44387
44354 44353 44355 44349 44349 44351 44353 44341 44354 44349 44341 44351 44343 44346 44356
44358 44361 44354 44355 44349 44351 44353 44340 44350 44350 44344 44349 44341 44345 44373

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 44362 bytes 100%
1,000 44340 bytes -22 bytes 100%
10,000 44339 bytes -1 byte 100%
100,000 44337 bytes -2 bytes 1.16%
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
44433 bytes +96 bytes (+0.22%) +2 bytes
44431 bytes +94 bytes (+0.21%)
44457 bytes +120 bytes (+0.27%) +26 bytes
44489 bytes +152 bytes (+0.34%) +58 bytes
44500 bytes +163 bytes (+0.37%) +69 bytes
44521 bytes +184 bytes (+0.42%) +90 bytes
44506 bytes +169 bytes (+0.38%) +75 bytes
44517 bytes +180 bytes (+0.41%) +86 bytes
44535 bytes +198 bytes (+0.45%) +104 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 35446 bytes -8891 bytes (-20.05%)
RAR (proprietary) RAR rar a -m5 -md64m -mc63:128t -mt1 37001 bytes -7336 bytes (-16.55%)
PPMd (Wikipedia) 7zip 7za a -mx=9 -m0=ppmd 38848 bytes -5489 bytes (-12.38%)
Brotli (Wikipedia) brotli brotli -q 11 40803 bytes -3534 bytes (-7.97%)
Burrows-Wheeler transform (Wikipedia) bzip2 bzip2 -9 41552 bytes -2785 bytes (-6.28%)
LZMA2 (Wikipedia) xz xz -9 42212 bytes -2125 bytes (-4.79%)
ZSTD (Wikipedia) zstd zstd -19 43313 bytes -1024 bytes (-2.31%)

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