AngularJS 1.6.5 - as small as it gets (near-perfect GZIP compression)

Choose a version:

The original file has 1268263 bytes (1,238.5k) and is available from the project website.
There you can find the official minified version, too, which brings down the size to 168517 bytes (164.6k, 13%).

After GZIP compression these minified files vary in size:

Boot	68076 bytes (66.5k)	CDN
cdnjs	59335 bytes (57.9k)	CDN
Google	59198 bytes (57.8k)	CDN
unpkg	58907 bytes (57.5k)	CDN
gzip -6 (default)	58886 bytes (57.5k)	local copy
gzip -9	58761 bytes (57.4k)	local copy
7zip -mx=9 -tgzip	56966 bytes (55.6k)	local copy
kzip -s0 -rn -b8	56948 bytes (55.6k)	local copy
libdeflate -12	56940 bytes (55.6k)	local copy
zultra	56940 bytes (55.6k)	local copy
pigz -11 -n	56878 bytes (55.5k)	local copy
Zopfli	56836 bytes (55.5k)	local copy

perma-link to the smallest file on my server:
http://minime.stephan-brumme.com/files/angularjs/angular-1.6.5.min.js (or via HTTPS)

You will automatically get the smallest AngularJS 1.6.5 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 2071 bytes by using my AngularJS 1.6.5 Zopfli version instead of the best available CDN (3.64% smaller than unpkg, 56836 vs. 58907 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 --mls512 --bsr20 --lazy --ohh

(found July 10, 2017)

Description	Value	Parameter
iterations	1000000	--i1000000
maximum blocks	8	--mb8
maximum length score	512	--mls512
block splitting recursion	20	--bsr20
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

Verify file integrity

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

MD5:
curl --silent --compressed https://code.angularjs.org/1.6.5/angular.min.js --location | md5sum
07a72b597f2fc10d6f88c8277d903d94 -
curl --silent --compressed https://minime.stephan-brumme.com/files/angularjs/angular-1.6.5.min.zopfli.js.gz | md5sum
07a72b597f2fc10d6f88c8277d903d94 -

SHA1:
curl --silent --compressed https://code.angularjs.org/1.6.5/angular.min.js --location | sha1sum
aee1f2a2174d18b9ba0c8652e39290dea2f71df9 -
curl --silent --compressed https://minime.stephan-brumme.com/files/angularjs/angular-1.6.5.min.zopfli.js.gz | sha1sum
aee1f2a2174d18b9ba0c8652e39290dea2f71df9 -

All listed CDNs deliver identical contents:

CDN	Size (compressed)	MD5 (uncompressed)	Timestamp
Boot	68076 bytes	07a72b597f2fc10d6f88c8277d903d94	July 9, 2017 @ 04:18
cdnjs	59335 bytes	07a72b597f2fc10d6f88c8277d903d94	(invalid)
Google	59198 bytes	07a72b597f2fc10d6f88c8277d903d94	July 6, 2017 @ 20:15
unpkg	58907 bytes	07a72b597f2fc10d6f88c8277d903d94	July 7, 2017 @ 17:25

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
56836 bytes	-3 bytes	zopfli --i1000000 --mls512 --bsr20 --lazy --ohh	July 10, 2017 @ 20:16
56839 bytes	-5 bytes	zopfli --i100000 --mls512 --bsr20 --lazy --ohh	July 10, 2017 @ 08:30
56844 bytes	-1 byte	zopfli --i10000 --mls512 --bsr20 --lazy --ohh	July 7, 2017 @ 21:50
56845 bytes	-1 byte	zopfli --i10000 --mls512 --bsr16 --lazy --ohh	July 7, 2017 @ 21:31
56846 bytes	-1 byte	zopfli --i10000 --mls2048 --bsr40 --lazy --ohh	July 7, 2017 @ 21:24
56847 bytes	-1 byte	zopfli --i10000 --mls256 --bsr40 --lazy --ohh	July 7, 2017 @ 21:20
56848 bytes	-2 bytes	zopfli --i1000 --mls2048 --bsr18 --lazy --ohh	July 7, 2017 @ 19:07
56850 bytes	-1 byte	zopfli --i1000 --mls2048 --bsr40 --lazy --ohh	July 7, 2017 @ 19:00
56851 bytes	-3 bytes	zopfli --i1000 --mls256 --bsr40 --lazy --ohh	July 7, 2017 @ 18:58
56854 bytes	–	zopfli --i100 --mls2048 --bsr40 --lazy --ohh	July 7, 2017 @ 17:41

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 @ 12:51.

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	56885	56887	56887	56887	56887	56887	56888	56887	56886	56892	56871	56867	56893	56867	56886
4	56881	56881	56890	56886	56883	56870	56871	56865	56864	56870	56861	56865	56864	56872	56874
6	56885	56875	56878	56877	56878	56875	56876	56875	56859	56872	56869	56865	56869	56863	56867
7	56887	56886	56877	56893	56889	56869	56871	56870	56859	56870	56863	56872	56868	56868	56865
8	56878	56873	56876	56888	56874	56870	56870	56859	56864	56865	56867	56868	56868	56872	56866
9	56883	56882	56886	56876	56877	56878	56870	56867	56868	56865	56865	56864	56867	56870	56865
10	56886	56877	56876	56879	56875	56864	56870	56872	56850	56854	56853	56865	56869	56861	56876
11	56879	56864	56864	56879	56875	56868	56870	56855	56846	56856	56861	56865	56869	56862	56860
12	56882	56878	56888	56885	56877	56869	56870	56853	56851	56850	56859	56859	56854	56866	56865
13	56878	56883	56871	56879	56877	56876	56877	56875	56840	56854	56861	56865	56856	56862	56874
14	56879	56871	56880	56879	56876	56868	56880	56859	56846	56851	56846	56858	56867	56862	56867
15	56886	56885	56866	56878	56877	56871	56870	56855	56846	56856	56860	56865	56868	56862	56873
16	56885	56882	56877	56877	56868	56865	56870	56850	56841	56849	56855	56866	56855	56864	56865
17	56883	56874	56869	56876	56876	56867	56869	56854	56846	56851	56861	56865	56855	56861	56865
18	56881	56881	56877	56878	56868	56868	56870	56875	56840	56853	56843	56865	56869	56860	56871
19	56886	56886	56873	56877	56878	56869	56873	56870	56850	56853	56865	56865	56868	56861	56874
20	56886	56894	56886	56877	56877	56857	56869	56868	56836	56850	56864	56866	56869	56861	56873
21	56884	56883	56876	56878	56877	56868	56870	56866	56846	56856	56850	56865	56868	56869	56873
22	56880	56869	56876	56876	56877	56873	56870	56853	56851	56856	56861	56865	56867	56863	56865
23	56887	56869	56872	56880	56877	56868	56876	56867	56846	56848	56856	56866	56866	56862	56869
25	56859	56867	56878	56879	56879	56866	56869	56870	56841	56852	56854	56865	56852	56867	56871
30	56869	56868	56863	56862	56858	56860	56870	56859	56849	56857	56846	56861	56852	56865	56860
40	56868	56864	56860	56860	56866	56861	56864	56847	56846	56849	56846	56847	56868	56865	56854

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	56854 bytes	–	100%
1,000	56848 bytes	-6 bytes	100%
10,000	56844 bytes	-4 bytes	100%
100,000	56839 bytes	-5 bytes	1.74%
1,000,000	56836 bytes	-3 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
(any)	56972 bytes	+136 bytes (+0.24%)	+24 bytes
1	56964 bytes	+128 bytes (+0.23%)	+16 bytes
2	56985 bytes	+149 bytes (+0.26%)	+37 bytes
3	56981 bytes	+145 bytes (+0.26%)	+33 bytes
4	56996 bytes	+160 bytes (+0.28%)	+48 bytes
5	56995 bytes	+159 bytes (+0.28%)	+47 bytes
6	56989 bytes	+153 bytes (+0.27%)	+41 bytes
7	57019 bytes	+183 bytes (+0.32%)	+71 bytes
8	56948 bytes	+112 bytes (+0.20%)	–

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	43913 bytes	-12923 bytes (-22.74%)
RAR (proprietary)	RAR	rar a -m5 -md64m -mc63:128t -mt1	46391 bytes	-10445 bytes (-18.38%)
PPMd (Wikipedia)	7zip	7za a -mx=9 -m0=ppmd	48127 bytes	-8709 bytes (-15.32%)
Brotli (Wikipedia)	brotli	brotli -q 11	51616 bytes	-5220 bytes (-9.18%)
Burrows-Wheeler transform (Wikipedia)	bzip2	bzip2 -9	52328 bytes	-4508 bytes (-7.93%)
LZMA2 (Wikipedia)	xz	xz -9	53120 bytes	-3716 bytes (-6.54%)
Zstandard (Wikipedia)	zstd	zstd -19	54677 bytes	-2159 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.