AngularJS 1.6.0 - as small as it gets (near-perfect GZIP compression)

Choose a version:

The original file has 1229966 bytes (1,201.1k) and is available from the project website.
There you can find the official minified version, too, which brings down the size to 165382 bytes (161.5k, 13%).

After GZIP compression these minified files vary in size:

Boot	66784 bytes (65.2k)	CDN
cdnjs	58290 bytes (56.9k)	CDN
gzip -6 (default)	57808 bytes (56.5k)	local copy
unpkg	57800 bytes (56.4k)	CDN
Google	57770 bytes (56.4k)	CDN
gzip -9	57689 bytes (56.3k)	local copy
jsdelivr	57688 bytes (56.3k)	CDN
7zip -mx=9 -tgzip	55924 bytes (54.6k)	local copy
kzip -s0 -rn -b0	55906 bytes (54.6k)	local copy
libdeflate -12	55884 bytes (54.6k)	local copy
zultra	55865 bytes (54.6k)	local copy
pigz -11 -n	55831 bytes (54.5k)	local copy
Zopfli	55772 bytes (54.5k)	local copy
Zopfli (defluff)	55771 bytes (54.5k)	local copy

perma-link to the smallest file on my server:
http://minime.stephan-brumme.com/files/angularjs/angular-1.6.0.min.js (or via HTTPS)

You will automatically get the smallest AngularJS 1.6.0 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 1916 bytes by using my AngularJS 1.6.0 Zopfli version instead of the best available CDN (3.44% smaller than jsdelivr, 55772 vs. 57688 bytes):

Download

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 --mls2048 --bsr19 --lazy --ohh

(found December 16, 2016)

Description	Value	Parameter
iterations	1000000	--i1000000
maximum blocks	8	--mb8
maximum length score	2048	--mls2048
block splitting recursion	19	--bsr19
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 (55771 bytes).

Download

Verify file integrity

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

MD5:
curl --silent --compressed https://code.angularjs.org/1.6.0/angular.min.js --location | md5sum
f4914c1fed1c60b90816b57b009c6162 -
curl --silent --compressed https://minime.stephan-brumme.com/files/angularjs/angular-1.6.0.min.zopfli.js.gz | md5sum
f4914c1fed1c60b90816b57b009c6162 -

SHA1:
curl --silent --compressed https://code.angularjs.org/1.6.0/angular.min.js --location | sha1sum
d68edfde7c833fd270ec89f6d7125c7f0ce49e5f -
curl --silent --compressed https://minime.stephan-brumme.com/files/angularjs/angular-1.6.0.min.zopfli.js.gz | sha1sum
d68edfde7c833fd270ec89f6d7125c7f0ce49e5f -

All listed CDNs deliver identical contents:

CDN	Size (compressed)	MD5 (uncompressed)	Timestamp
Boot	66784 bytes	f4914c1fed1c60b90816b57b009c6162	December 8, 2016 @ 14:00
cdnjs	58290 bytes	f4914c1fed1c60b90816b57b009c6162	December 8, 2016 @ 13:47
unpkg	57800 bytes	f4914c1fed1c60b90816b57b009c6162	December 15, 2016 @ 10:45
Google	57770 bytes	f4914c1fed1c60b90816b57b009c6162	December 8, 2016 @ 22:28
jsdelivr	57688 bytes	f4914c1fed1c60b90816b57b009c6162	December 10, 2016 @ 04:38

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

Other Versions

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

1.8.2, 1.8.1, 1.8.0,
1.7.9, 1.7.8, 1.7.7, 1.7.6, 1.7.5, 1.7.4, 1.7.3, 1.7.2, 1.7.1, 1.7.0,
1.6.10, 1.6.9, 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
55772 bytes	-4 bytes	zopfli --i1000000 --mls2048 --bsr19 --lazy --ohh	December 16, 2016 @ 18:29
55776 bytes	-1 byte	zopfli --i100000 --mls2048 --bsr14 --lazy --ohh	December 15, 2016 @ 21:23
55777 bytes	-1 byte	zopfli --i100000 --mls256 --bsr11 --lazy --ohh	December 15, 2016 @ 13:52
55778 bytes	-2 bytes	zopfli --i100000 --mls256 --bsr21 --lazy --ohh	December 15, 2016 @ 12:50
55780 bytes	-4 bytes	zopfli --i10000 --mls256 --bsr21 --lazy --ohh	December 15, 2016 @ 11:37
55784 bytes	-3 bytes	zopfli --i1000 --mls256 --bsr21 --lazy --ohh	December 15, 2016 @ 11:25
55787 bytes	-17 bytes	zopfli --i1000 --mls512 --bsr14 --lazy --ohh	December 15, 2016 @ 11:24
55804 bytes	–	zopfli --i100 --mls2048 --bsr13 --lazy --ohh	December 15, 2016 @ 10:58

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

Most recent activity on July 20, 2020 @ 12:50.

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
2	55824	55823	55827	55829	55830	55830	55832	55832	55831	55830	55833	55815	55815	55815	55825
4	55819	55821	55816	55811	55811	55809	55810	55802	55808	55798	55806	55798	55809	55810	55800
6	55811	55821	55812	55812	55813	55815	55809	55787	55798	55799	55808	55811	55808	55802	55797
7	55814	55816	55813	55826	55806	55816	55807	55802	55786	55789	55792	55810	55798	55809	55809
8	55813	55815	55821	55817	55808	55806	55807	55791	55812	55809	55791	55805	55819	55809	55793
9	55807	55824	55811	55813	55808	55808	55810	55796	55799	55810	55798	55798	55806	55809	55794
10	55824	55806	55807	55804	55803	55809	55809	55793	55791	55791	55790	55810	55802	55799	55806
11	55813	55808	55813	55811	55802	55808	55803	55777	55790	55789	55797	55811	55807	55809	55796
12	55817	55816	55811	55812	55808	55811	55808	55791	55783	55778	55777	55801	55812	55798	55796
13	55807	55811	55800	55805	55800	55809	55807	55796	55784	55781	55772	55800	55808	55800	55795
14	55820	55813	55807	55811	55799	55809	55809	55782	55778	55793	55774	55810	55808	55799	55797
15	55814	55808	55812	55803	55803	55808	55807	55781	55789	55791	55786	55798	55799	55799	55814
16	55812	55821	55812	55810	55805	55808	55805	55789	55778	55788	55785	55798	55799	55806	55792
17	55806	55811	55813	55804	55802	55808	55807	55781	55793	55801	55778	55804	55798	55810	55797
18	55802	55813	55804	55805	55811	55812	55806	55781	55783	55799	55790	55798	55799	55799	55799
19	55819	55813	55811	55811	55808	55814	55809	55795	55782	55791	55772	55798	55798	55809	55794
20	55810	55809	55806	55807	55804	55812	55809	55788	55789	55799	55786	55798	55798	55799	55791
21	55821	55812	55802	55804	55796	55808	55807	55778	55777	55777	55781	55799	55798	55809	55796
22	55816	55810	55814	55801	55808	55806	55806	55797	55784	55790	55791	55799	55804	55798	55799
23	55806	55810	55807	55803	55801	55809	55806	55781	55783	55789	55777	55800	55805	55799	55795
25	55802	55807	55803	55813	55808	55808	55808	55791	55789	55800	55790	55807	55798	55800	55792
30	55802	55812	55807	55802	55803	55809	55798	55792	55789	55790	55778	55810	55799	55810	55792
40	55805	55811	55802	55803	55798	55799	55804	55784	55788	55799	55792	55810	55799	55798	55796

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	55804 bytes	–	100%
1,000	55784 bytes	-20 bytes	100%
10,000	55780 bytes	-4 bytes	100%
100,000	55776 bytes	-4 bytes	4.06%
1,000,000	55772 bytes	-4 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
(any)	55906 bytes	+134 bytes (+0.24%)	–
1	55909 bytes	+137 bytes (+0.25%)	+3 bytes
2	55915 bytes	+143 bytes (+0.26%)	+9 bytes
3	55930 bytes	+158 bytes (+0.28%)	+24 bytes
4	55928 bytes	+156 bytes (+0.28%)	+22 bytes
5	55941 bytes	+169 bytes (+0.30%)	+35 bytes
6	55945 bytes	+173 bytes (+0.31%)	+39 bytes
7	55968 bytes	+196 bytes (+0.35%)	+62 bytes
8	55980 bytes	+208 bytes (+0.37%)	+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.
However, support for Brotli is constantly growing - for example, your browser actually supports it !

Algorithm	Program	Parameters	Size	Compared To Best Zopfli
ZPAQ (Wikipedia)	zpaq	zpaq -method 69	43124 bytes	-12648 bytes (-22.68%)
RAR (proprietary)	RAR	rar a -m5 -md64m -mc63:128t -mt1	45569 bytes	-10203 bytes (-18.29%)
PPMd (Wikipedia)	7zip	7za a -mx=9 -m0=ppmd	47196 bytes	-8576 bytes (-15.38%)
Brotli (Wikipedia)	brotli	brotli -q 11	50689 bytes	-5083 bytes (-9.11%)
Burrows-Wheeler transform (Wikipedia)	bzip2	bzip2 -9	51435 bytes	-4337 bytes (-7.78%)
LZMA2 (Wikipedia)	xz	xz -9	52180 bytes	-3592 bytes (-6.44%)
Zstandard (Wikipedia)	zstd	zstd -19	53655 bytes	-2117 bytes (-3.80%)

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):

Load and Parse Data

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 2026.
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

All trademarks are property of their respective owners. You know, the boring legal stuff.