AngularJS 1.4.14 - as small as it gets (near-perfect GZIP compression)

Choose a version:

The original file has 1100836 bytes (1,075.0k) and is available from the project website.
There you can find the official minified version, too, which brings down the size to 151183 bytes (147.6k, 14%).

After GZIP compression these minified files vary in size:

Boot	61715 bytes (60.3k)	CDN
cdnjs	53984 bytes (52.7k)	CDN
unpkg	53634 bytes (52.4k)	CDN
gzip -6 (default)	53622 bytes (52.4k)	local copy
Google	53566 bytes (52.3k)	CDN
gzip -9	53540 bytes (52.3k)	local copy
libdeflate -12	51864 bytes (50.6k)	local copy
kzip -s0 -rn -b0	51856 bytes (50.6k)	local copy
7zip -mx=9 -tgzip	51855 bytes (50.6k)	local copy
zultra	51836 bytes (50.6k)	local copy
pigz -11 -n	51821 bytes (50.6k)	local copy
Zopfli	51723 bytes (50.5k)	local copy

perma-link to the smallest file on my server:
http://minime.stephan-brumme.com/files/angularjs/angular-1.4.14.min.js (or via HTTPS)

You will automatically get the smallest AngularJS 1.4.14 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 1843 bytes by using my AngularJS 1.4.14 Zopfli version instead of the best available CDN (3.56% smaller than Google, 51723 vs. 53566 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 --mls32768 --bsr16 --lazy --ohh

(found October 13, 2016)

Description	Value	Parameter
iterations	1000000	--i1000000
maximum blocks	8	--mb8
maximum length score	32768	--mls32768
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

Verify file integrity

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

MD5:
curl --silent --compressed https://code.angularjs.org/1.4.14/angular.min.js --location | md5sum
57b0b0aa12a6bc8ecd0e2707567ed60d -
curl --silent --compressed https://minime.stephan-brumme.com/files/angularjs/angular-1.4.14.min.zopfli.js.gz | md5sum
57b0b0aa12a6bc8ecd0e2707567ed60d -

SHA1:
curl --silent --compressed https://code.angularjs.org/1.4.14/angular.min.js --location | sha1sum
5c1910533127b113fdadcc33da1e26e77051e4ee -
curl --silent --compressed https://minime.stephan-brumme.com/files/angularjs/angular-1.4.14.min.zopfli.js.gz | sha1sum
5c1910533127b113fdadcc33da1e26e77051e4ee -

All listed CDNs deliver identical contents:

CDN	Size (compressed)	MD5 (uncompressed)	Timestamp
Boot	61715 bytes	57b0b0aa12a6bc8ecd0e2707567ed60d	October 12, 2016 @ 16:13
cdnjs	53984 bytes	57b0b0aa12a6bc8ecd0e2707567ed60d	October 11, 2016 @ 20:02
unpkg	53634 bytes	57b0b0aa12a6bc8ecd0e2707567ed60d	October 12, 2016 @ 00:22
Google	53566 bytes	57b0b0aa12a6bc8ecd0e2707567ed60d	November 22, 2016 @ 20:39

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
51723 bytes	-2 bytes	zopfli --i1000000 --mls32768 --bsr16 --lazy --ohh	October 13, 2016 @ 05:40
51725 bytes	-4 bytes	zopfli --i100000 --mls32768 --bsr16 --lazy --ohh	October 12, 2016 @ 14:09
51729 bytes	-3 bytes	zopfli --i10000 --mls32768 --bsr16 --lazy --ohh	October 12, 2016 @ 11:13
51732 bytes	-3 bytes	zopfli --i1000 --mls32768 --bsr16 --lazy --ohh	October 12, 2016 @ 10:43
51735 bytes	-21 bytes	zopfli --i1000 --mls4 --bsr21 --lazy --ohh	October 12, 2016 @ 10:40
51756 bytes	–	zopfli --i100 --mls4 --bsr21 --lazy --ohh	October 12, 2016 @ 09:14

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 @ 12:54.

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	51789	51790	51789	51789	51789	51789	51789	51790	51790	51794	51777	51776	51772	51772	51785
4	51766	51741	51745	51742	51771	51759	51760	51768	51770	51770	51773	51771	51772	51764	51765
6	51757	51728	51736	51735	51735	51758	51757	51778	51767	51765	51774	51773	51772	51766	51736
7	51750	51739	51740	51749	51762	51755	51778	51768	51742	51780	51776	51760	51772	51770	51759
8	51760	51739	51737	51754	51736	51767	51770	51769	51743	51773	51767	51763	51779	51770	51760
9	51755	51733	51741	51742	51753	51758	51760	51769	51773	51757	51772	51759	51772	51768	51758
10	51755	51755	51758	51745	51769	51750	51756	51768	51769	51759	51773	51760	51774	51766	51759
11	51756	51752	51752	51745	51754	51757	51759	51758	51768	51765	51762	51760	51772	51768	51733
12	51758	51756	51756	51742	51740	51754	51771	51769	51769	51756	51773	51760	51773	51772	51735
13	51758	51750	51754	51727	51749	51773	51757	51769	51769	51756	51772	51760	51772	51768	51754
14	51758	51752	51735	51739	51755	51755	51758	51770	51768	51756	51772	51760	51772	51769	51759
15	51769	51737	51740	51728	51743	51755	51758	51769	51771	51764	51773	51759	51772	51767	51758
16	51757	51736	51742	51741	51742	51757	51758	51768	51747	51760	51773	51762	51774	51767	51723
17	51756	51742	51737	51740	51755	51758	51759	51769	51768	51761	51772	51759	51772	51781	51736
18	51762	51733	51735	51735	51735	51754	51759	51768	51744	51758	51772	51761	51773	51767	51734
19	51754	51734	51739	51739	51727	51755	51759	51769	51769	51758	51772	51759	51772	51769	51732
20	51758	51738	51742	51739	51735	51760	51759	51769	51769	51756	51772	51762	51773	51767	51761
21	51757	51732	51742	51739	51751	51746	51759	51768	51769	51757	51772	51759	51772	51768	51734
22	51756	51733	51734	51734	51736	51750	51757	51769	51759	51759	51773	51759	51773	51766	51759
23	51758	51734	51734	51744	51753	51754	51759	51762	51767	51756	51772	51759	51772	51768	51735
25	51758	51755	51751	51742	51752	51757	51757	51760	51768	51757	51772	51772	51773	51769	51772
30	51749	51748	51751	51746	51732	51747	51747	51769	51758	51747	51761	51758	51772	51768	51762
40	51745	51752	51762	51745	51747	51747	51748	51752	51748	51758	51768	51761	51772	51769	51732

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	51756 bytes	–	100%
1,000	51732 bytes	-24 bytes	100%
10,000	51729 bytes	-3 bytes	100%
100,000	51725 bytes	-4 bytes	1.45%
1,000,000	51723 bytes	-2 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)	51856 bytes	+133 bytes (+0.26%)	–
1	51865 bytes	+142 bytes (+0.27%)	+9 bytes
2	51881 bytes	+158 bytes (+0.31%)	+25 bytes
3	51891 bytes	+168 bytes (+0.32%)	+35 bytes
4	51896 bytes	+173 bytes (+0.33%)	+40 bytes
5	51906 bytes	+183 bytes (+0.35%)	+50 bytes
6	51909 bytes	+186 bytes (+0.36%)	+53 bytes
7	51924 bytes	+201 bytes (+0.39%)	+68 bytes
8	51922 bytes	+199 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	40255 bytes	-11468 bytes (-22.17%)
RAR (proprietary)	RAR	rar a -m5 -md64m -mc63:128t -mt1	42478 bytes	-9245 bytes (-17.87%)
PPMd (Wikipedia)	7zip	7za a -mx=9 -m0=ppmd	43861 bytes	-7862 bytes (-15.20%)
Brotli (Wikipedia)	brotli	brotli -q 11	47008 bytes	-4715 bytes (-9.12%)
Burrows-Wheeler transform (Wikipedia)	bzip2	bzip2 -9	47933 bytes	-3790 bytes (-7.33%)
LZMA2 (Wikipedia)	xz	xz -9	48532 bytes	-3191 bytes (-6.17%)
Zstandard (Wikipedia)	zstd	zstd -19	49984 bytes	-1739 bytes (-3.36%)

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.