AngularJS 1.7.2 - as small as it gets (near-perfect GZIP compression)

Choose a version:

The original file has 1335458 bytes (1,304.2k) and is available from the project website.
There you can find the official minified version, too, which brings down the size to 172105 bytes (168.1k, 13%).

After GZIP compression these minified files vary in size:

Boot	60407 bytes (59.0k)	CDN
cdnjs	60407 bytes (59.0k)	CDN
Google	60234 bytes (58.8k)	CDN
gzip -6 (default)	59944 bytes (58.5k)	local copy
unpkg	59934 bytes (58.5k)	CDN
gzip -9	59788 bytes (58.4k)	local copy
kzip -s0 -rn -b0	57965 bytes (56.6k)	local copy
7zip -mx=9 -tgzip	57942 bytes (56.6k)	local copy
libdeflate -12	57938 bytes (56.6k)	local copy
zultra	57899 bytes (56.5k)	local copy
pigz -11 -n	57869 bytes (56.5k)	local copy
Zopfli	57813 bytes (56.5k)	local copy
Zopfli (defluff)	57809 bytes (56.5k)	local copy

perma-link to the smallest file on my server:
http://minime.stephan-brumme.com/files/angularjs/angular-1.7.2.min.js (or via HTTPS)

You will automatically get the smallest AngularJS 1.7.2 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 2121 bytes by using my AngularJS 1.7.2 Zopfli version instead of the best available CDN (3.67% smaller than unpkg, 57813 vs. 59934 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 June 15, 2018)

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

Even Smaller Files Thanks To Defluff

Zopfli's output can be further optimized by the defluff tool.
In this particular case, defluff saves 4 more bytes (57809 bytes).

Download

Verify file integrity

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

MD5:
curl --silent --compressed https://code.angularjs.org/1.7.2/angular.min.js --location | md5sum
ad73328e890d5448958348bb328caeec -
curl --silent --compressed https://minime.stephan-brumme.com/files/angularjs/angular-1.7.2.min.zopfli.js.gz | md5sum
ad73328e890d5448958348bb328caeec -

SHA1:
curl --silent --compressed https://code.angularjs.org/1.7.2/angular.min.js --location | sha1sum
1e1350df7e8146a48937f46ca14b2da9dd8cea06 -
curl --silent --compressed https://minime.stephan-brumme.com/files/angularjs/angular-1.7.2.min.zopfli.js.gz | sha1sum
1e1350df7e8146a48937f46ca14b2da9dd8cea06 -

All listed CDNs deliver identical contents:

CDN	Size (compressed)	MD5 (uncompressed)	Timestamp
Boot	60407 bytes	ad73328e890d5448958348bb328caeec	June 26, 2018 @ 12:15
cdnjs	60407 bytes	ad73328e890d5448958348bb328caeec	June 26, 2018 @ 12:15
Google	60234 bytes	ad73328e890d5448958348bb328caeec	June 16, 2018 @ 20:15
unpkg	59934 bytes	ad73328e890d5448958348bb328caeec	(invalid)

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
57813 bytes	-3 bytes	zopfli --i1000000 --mls512 --bsr20 --lazy --ohh	June 15, 2018 @ 13:24
57816 bytes	-5 bytes	zopfli --i100000 --mls512 --bsr20 --lazy --ohh	June 14, 2018 @ 17:28
57821 bytes	-1 byte	zopfli --i10000 --mls512 --bsr20 --lazy --ohh	June 14, 2018 @ 15:13
57822 bytes	-1 byte	zopfli --i10000 --mls256 --bsr22 --lazy --ohh	June 14, 2018 @ 14:57
57823 bytes	-5 bytes	zopfli --i10000 --mls128 --bsr10 --lazy --ohh	June 14, 2018 @ 14:50
57828 bytes	-1 byte	zopfli --i1000 --mls128 --bsr10 --lazy --ohh	June 14, 2018 @ 13:53
57829 bytes	-3 bytes	zopfli --i1000 --mls512 --bsr21 --lazy --ohh	June 14, 2018 @ 13:53
57832 bytes	–	zopfli --i100 --mls512 --bsr23 --lazy --ohh	June 14, 2018 @ 13:42

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 @ 12:53.

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, 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	57879	57882	57880	57883	57882	57879	57874	57872	57877	57877	57856	57861	57860	57855	57893
4	57870	57870	57861	57857	57856	57859	57851	57842	57851	57853	57839	57853	57849	57849	57858
6	57877	57879	57870	57856	57861	57857	57855	57841	57840	57851	57852	57853	57853	57841	57870
7	57854	57856	57879	57863	57853	57854	57840	57843	57853	57838	57843	57851	57848	57850	57854
8	57856	57857	57861	57854	57866	57854	57839	57840	57845	57858	57854	57846	57848	57846	57857
9	57863	57889	57875	57856	57860	57856	57848	57854	57825	57849	57840	57852	57861	57848	57867
10	57856	57854	57842	57877	57838	57835	57823	57838	57825	57836	57836	57836	57834	57845	57860
11	57847	57844	57842	57840	57838	57835	57823	57819	57827	57838	57841	57835	57850	57832	57842
12	57847	57843	57874	57869	57838	57859	57824	57835	57826	57836	57836	57844	57861	57854	57867
13	57844	57844	57853	57848	57844	57840	57825	57827	57824	57854	57828	57836	57835	57824	57853
14	57844	57844	57846	57836	57834	57837	57826	57840	57828	57849	57828	57838	57834	57827	57837
15	57843	57840	57873	57841	57834	57835	57825	57824	57823	57826	57826	57835	57832	57831	57842
16	57840	57842	57844	57839	57833	57841	57823	57823	57823	57837	57834	57835	57843	57830	57858
17	57843	57847	57853	57850	57847	57836	57838	57826	57825	57836	57837	57837	57832	57825	57853
18	57839	57842	57856	57843	57834	57837	57823	57823	57831	57835	57844	57834	57833	57844	57853
19	57843	57841	57840	57839	57837	57838	57824	57827	57824	57845	57836	57837	57825	57853	57843
20	57863	57858	57867	57868	57849	57853	57824	57820	57813	57824	57841	57836	57835	57849	57869
21	57842	57842	57853	57851	57837	57840	57824	57842	57824	57835	57826	57842	57831	57827	57859
22	57842	57840	57841	57841	57835	57842	57837	57820	57823	57826	57835	57836	57831	57847	57858
23	57855	57853	57840	57839	57840	57836	57824	57838	57823	57838	57839	57853	57835	57846	57841
25	57842	57844	57842	57838	57838	57840	57833	57832	57837	57837	57827	57835	57836	57828	57852
30	57847	57842	57847	57839	57853	57843	57824	57826	57830	57837	57843	57840	57832	57823	57844
40	57863	57853	57858	57840	57848	57838	57828	57826	57825	57837	57840	57840	57833	57826	57858

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	57832 bytes	–	100%
1,000	57828 bytes	-4 bytes	100%
10,000	57821 bytes	-7 bytes	100%
100,000	57816 bytes	-5 bytes	1.16%
1,000,000	57813 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)	57965 bytes	+152 bytes (+0.26%)	–
1	57965 bytes	+152 bytes (+0.26%)	–
2	57972 bytes	+159 bytes (+0.28%)	+7 bytes
3	57980 bytes	+167 bytes (+0.29%)	+15 bytes
4	57987 bytes	+174 bytes (+0.30%)	+22 bytes
5	57999 bytes	+186 bytes (+0.32%)	+34 bytes
6	57972 bytes	+159 bytes (+0.28%)	+7 bytes
7	58029 bytes	+216 bytes (+0.37%)	+64 bytes
8	58031 bytes	+218 bytes (+0.38%)	+66 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	44619 bytes	-13194 bytes (-22.82%)
RAR (proprietary)	RAR	rar a -m5 -md64m -mc63:128t -mt1	47160 bytes	-10653 bytes (-18.43%)
PPMd (Wikipedia)	7zip	7za a -mx=9 -m0=ppmd	48970 bytes	-8843 bytes (-15.30%)
Brotli (Wikipedia)	brotli	brotli -q 11	52470 bytes	-5343 bytes (-9.24%)
Burrows-Wheeler transform (Wikipedia)	bzip2	bzip2 -9	53161 bytes	-4652 bytes (-8.05%)
LZMA2 (Wikipedia)	xz	xz -9	54040 bytes	-3773 bytes (-6.53%)
Zstandard (Wikipedia)	zstd	zstd -19	55638 bytes	-2175 bytes (-3.76%)

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.