AngularJS 1.5.4 - as small as it gets (near-perfect GZIP compression)

Choose a version:

The original file has 1147843 bytes (1,120.9k) and is available from the project website.
There you can find the official minified version, too, which brings down the size to 157852 bytes (154.2k, 14%).

After GZIP compression these minified files vary in size:

Boot	64090 bytes (62.6k)	CDN
cdnjs	56004 bytes (54.7k)	CDN
gzip -6 (default)	55632 bytes (54.3k)	local copy
Google	55572 bytes (54.3k)	CDN
gzip -9	55538 bytes (54.2k)	local copy
libdeflate -12	53818 bytes (52.6k)	local copy
7zip -mx=9 -tgzip	53800 bytes (52.5k)	local copy
zultra	53758 bytes (52.5k)	local copy
kzip -s0 -rn -b8	53734 bytes (52.5k)	local copy
pigz -11 -n	53721 bytes (52.5k)	local copy
Zopfli	53644 bytes (52.4k)	local copy
Zopfli (defluff)	53643 bytes (52.4k)	local copy

perma-link to the smallest file on my server:
http://minime.stephan-brumme.com/files/angularjs/angular-1.5.4.min.js (or via HTTPS)

You will automatically get the smallest AngularJS 1.5.4 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 1928 bytes by using my AngularJS 1.5.4 Zopfli version instead of the best available CDN (3.59% smaller than Google, 53644 vs. 55572 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 --mls4 --bsr15 --lazy --ohh

(found April 15, 2016)

Description	Value	Parameter
iterations	1000000	--i1000000
maximum blocks	8	--mb8
maximum length score	4	--mls4
block splitting recursion	15	--bsr15
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 (53643 bytes).

Download

Verify file integrity

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

MD5:
curl --silent --compressed https://code.angularjs.org/1.5.4/angular.min.js --location | md5sum
c9c9208f93bf772de18eab3108537beb -
curl --silent --compressed https://minime.stephan-brumme.com/files/angularjs/angular-1.5.4.min.zopfli.js.gz | md5sum
c9c9208f93bf772de18eab3108537beb -

SHA1:
curl --silent --compressed https://code.angularjs.org/1.5.4/angular.min.js --location | sha1sum
c7adb3432d16bd06f115b4cca3a6abf0915c6203 -
curl --silent --compressed https://minime.stephan-brumme.com/files/angularjs/angular-1.5.4.min.zopfli.js.gz | sha1sum
c7adb3432d16bd06f115b4cca3a6abf0915c6203 -

All listed CDNs deliver identical contents:

CDN	Size (compressed)	MD5 (uncompressed)	Timestamp
Boot	64090 bytes	c9c9208f93bf772de18eab3108537beb	May 3, 2016 @ 10:37
cdnjs	56004 bytes	c9c9208f93bf772de18eab3108537beb	April 14, 2016 @ 11:31
Google	55572 bytes	c9c9208f93bf772de18eab3108537beb	June 2, 2016 @ 00:19

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
53644 bytes	-3 bytes	zopfli --i1000000 --mls4 --bsr15 --lazy --ohh	April 15, 2016 @ 20:13
53647 bytes	-4 bytes	zopfli --i100000 --mls4 --bsr15 --lazy --ohh	April 14, 2016 @ 17:21
53651 bytes	-1 byte	zopfli --i10000 --mls4 --bsr15 --lazy --ohh	April 14, 2016 @ 16:04
53652 bytes	-2 bytes	zopfli --i100000 --mls16 --bsr11 --lazy --ohh	April 14, 2016 @ 13:03
53654 bytes	-5 bytes	zopfli --i10000 --mls16 --bsr11 --lazy --ohh	April 14, 2016 @ 12:00
53659 bytes	-18 bytes	zopfli --i1000 --mls16 --bsr11 --lazy --ohh	April 14, 2016 @ 11:53
53677 bytes	–	zopfli --i100 --mls16 --bsr11 --lazy --ohh	April 14, 2016 @ 11:33

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	53711	53711	53712	53712	53713	53712	53698	53712	53705	53712	53713	53704	53709	53665	53712
4	53720	53692	53702	53694	53695	53693	53691	53695	53696	53694	53698	53699	53698	53658	53691
6	53681	53680	53683	53695	53680	53694	53686	53698	53687	53690	53682	53698	53698	53653	53690
7	53678	53715	53688	53678	53700	53695	53693	53689	53670	53674	53708	53699	53689	53662	53690
8	53681	53666	53680	53682	53687	53696	53699	53687	53697	53682	53678	53700	53704	53653	53690
9	53682	53661	53690	53689	53692	53689	53686	53688	53665	53671	53670	53688	53699	53664	53691
10	53696	53677	53677	53690	53691	53693	53694	53697	53687	53679	53670	53698	53688	53659	53691
11	53687	53671	53682	53652	53697	53693	53686	53697	53688	53680	53692	53701	53690	53682	53689
12	53679	53663	53677	53692	53682	53689	53692	53688	53687	53671	53673	53687	53697	53659	53685
13	53681	53667	53679	53689	53682	53693	53686	53688	53687	53682	53672	53698	53688	53653	53688
14	53680	53680	53679	53682	53681	53689	53689	53689	53687	53674	53689	53688	53691	53665	53691
15	53677	53644	53684	53681	53681	53693	53686	53687	53696	53672	53671	53699	53690	53666	53691
16	53677	53644	53681	53680	53682	53689	53690	53691	53665	53692	53670	53698	53689	53652	53690
17	53673	53681	53680	53684	53680	53675	53686	53688	53665	53671	53679	53701	53690	53653	53689
18	53683	53664	53681	53682	53681	53689	53693	53690	53687	53680	53669	53699	53690	53655	53689
19	53679	53674	53680	53681	53681	53680	53686	53690	53665	53679	53671	53687	53690	53654	53689
20	53680	53681	53679	53680	53681	53689	53686	53689	53665	53680	53673	53687	53690	53658	53689
21	53674	53673	53679	53682	53681	53688	53693	53670	53697	53680	53669	53698	53689	53659	53689
22	53681	53680	53680	53683	53682	53689	53686	53690	53666	53681	53673	53698	53690	53683	53690
23	53674	53682	53680	53691	53683	53695	53688	53688	53665	53693	53670	53688	53690	53661	53691
25	53673	53674	53681	53683	53679	53690	53686	53689	53665	53691	53671	53698	53693	53656	53688
30	53675	53678	53677	53679	53678	53691	53687	53688	53666	53669	53692	53689	53690	53660	53683
40	53675	53673	53690	53685	53677	53679	53675	53665	53667	53668	53671	53688	53690	53683	53689

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	53677 bytes	–	100%
1,000	53655 bytes	-22 bytes	100%
10,000	53651 bytes	-4 bytes	100%
100,000	53647 bytes	-4 bytes	0.87%
1,000,000	53644 bytes	-3 bytes	0.58%
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)	53791 bytes	+147 bytes (+0.27%)	+57 bytes
1	53791 bytes	+147 bytes (+0.27%)	+57 bytes
2	53802 bytes	+158 bytes (+0.29%)	+68 bytes
3	53800 bytes	+156 bytes (+0.29%)	+66 bytes
4	53806 bytes	+162 bytes (+0.30%)	+72 bytes
5	53826 bytes	+182 bytes (+0.34%)	+92 bytes
6	53826 bytes	+182 bytes (+0.34%)	+92 bytes
7	53763 bytes	+119 bytes (+0.22%)	+29 bytes
8	53734 bytes	+90 bytes (+0.17%)	–

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	41568 bytes	-12076 bytes (-22.51%)
RAR (proprietary)	RAR	rar a -m5 -md64m -mc63:128t -mt1	43932 bytes	-9712 bytes (-18.10%)
PPMd (Wikipedia)	7zip	7za a -mx=9 -m0=ppmd	45384 bytes	-8260 bytes (-15.40%)
Brotli (Wikipedia)	brotli	brotli -q 11	48827 bytes	-4817 bytes (-8.98%)
Burrows-Wheeler transform (Wikipedia)	bzip2	bzip2 -9	49571 bytes	-4073 bytes (-7.59%)
LZMA2 (Wikipedia)	xz	xz -9	50264 bytes	-3380 bytes (-6.30%)
Zstandard (Wikipedia)	zstd	zstd -19	51743 bytes	-1901 bytes (-3.54%)

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.