AngularJS 1.4.4 - as small as it gets (near-perfect GZIP compression)

Choose a version:

The original file has 1048111 bytes (1,023.5k) and is available from the project website.
There you can find the official minified version, too, which brings down the size to 147059 bytes (143.6k, 14%).

After GZIP compression these minified files vary in size:

Boot	60158 bytes (58.7k)	CDN
cdnjs	52768 bytes (51.5k)	CDN
gzip -6 (default)	52432 bytes (51.2k)	local copy
unpkg	52432 bytes (51.2k)	CDN
Google	52363 bytes (51.1k)	CDN
gzip -9	52328 bytes (51.1k)	local copy
7zip -mx=9 -tgzip	50691 bytes (49.5k)	local copy
libdeflate -12	50687 bytes (49.5k)	local copy
kzip -s0 -rn -b0	50672 bytes (49.5k)	local copy
zultra	50665 bytes (49.5k)	local copy
pigz -11 -n	50625 bytes (49.4k)	local copy
Zopfli	50527 bytes (49.3k)	local copy

perma-link to the smallest file on my server:
http://minime.stephan-brumme.com/files/angularjs/angular-1.4.4.min.js (or via HTTPS)

You will automatically get the smallest AngularJS 1.4.4 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 1836 bytes by using my AngularJS 1.4.4 Zopfli version instead of the best available CDN (3.63% smaller than Google, 50527 vs. 52363 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 --i100000 --mb8 --mls16384 --bsr15 --lazy --ohh

(found October 13, 2015)

Description	Value	Parameter
iterations	100000	--i100000
maximum blocks	8	--mb8
maximum length score	16384	--mls16384
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

Verify file integrity

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

MD5:
curl --silent --compressed https://code.angularjs.org/1.4.4/angular.min.js --location | md5sum
feeb76d0de3487eb412c1928625e8fca -
curl --silent --compressed https://minime.stephan-brumme.com/files/angularjs/angular-1.4.4.min.zopfli.js.gz | md5sum
feeb76d0de3487eb412c1928625e8fca -

SHA1:
curl --silent --compressed https://code.angularjs.org/1.4.4/angular.min.js --location | sha1sum
f9bfcb09044cc412c376055578abdb746bb679a2 -
curl --silent --compressed https://minime.stephan-brumme.com/files/angularjs/angular-1.4.4.min.zopfli.js.gz | sha1sum
f9bfcb09044cc412c376055578abdb746bb679a2 -

All listed CDNs deliver identical contents:

CDN	Size (compressed)	MD5 (uncompressed)	Timestamp
Boot	60158 bytes	feeb76d0de3487eb412c1928625e8fca	August 17, 2015 @ 08:56
cdnjs	52768 bytes	feeb76d0de3487eb412c1928625e8fca	August 14, 2015 @ 18:34
unpkg	52432 bytes	feeb76d0de3487eb412c1928625e8fca	July 11, 2016 @ 15:52
Google	52363 bytes	feeb76d0de3487eb412c1928625e8fca	August 13, 2015 @ 23:08

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
50527 bytes	-2 bytes	zopfli --i100000 --mls16384 --bsr15 --lazy --ohh	October 13, 2015 @ 22:35
50529 bytes	-1 byte	zopfli --i10000 --mls16384 --bsr17 --lazy --ohh	September 25, 2015 @ 16:29
50530 bytes	-5 bytes	zopfli --i10000 --mls16384 --bsr13 --lazy --ohh	September 17, 2015 @ 10:52
50535 bytes	-2 bytes	zopfli --i1000 --mls16384 --bsr13 --lazy --ohh	September 11, 2015 @ 17:18
50537 bytes	-2 bytes	zopfli --i1000 --mls16384 --bsr7 --lazy --ohh	September 11, 2015 @ 17:11
50539 bytes	-9 bytes	zopfli --i1000 --mls16384 --bsr11 --lazy --ohh	September 11, 2015 @ 16:12
50548 bytes	–	zopfli --i100 --mls16384 --bsr13 --lazy --ohh	September 11, 2015 @ 15:14

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 @ 12:55.

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 or 100,000.

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	50598	50599	50600	50602	50612	50609	50612	50604	50611	50604	50615	50606	50610	50609	50606
4	50590	50549	50560	50596	50551	50592	50586	50586	50575	50574	50588	50589	50585	50566	50592
6	50584	50548	50529	50567	50587	50579	50586	50585	50589	50584	50588	50584	50583	50545	50598
7	50551	50552	50551	50567	50582	50559	50568	50593	50573	50574	50572	50574	50576	50531	50591
8	50547	50545	50531	50550	50546	50580	50572	50572	50588	50576	50587	50590	50575	50543	50550
9	50569	50546	50566	50597	50549	50591	50582	50585	50562	50573	50592	50574	50572	50544	50595
10	50543	50552	50546	50559	50586	50575	50572	50589	50583	50573	50572	50578	50579	50536	50595
11	50567	50553	50560	50556	50559	50579	50586	50585	50564	50574	50572	50577	50573	50536	50591
12	50572	50558	50563	50559	50558	50580	50568	50589	50573	50572	50592	50584	50573	50539	50551
13	50572	50556	50569	50579	50570	50592	50584	50581	50584	50577	50592	50574	50574	50528	50587
14	50569	50570	50558	50554	50551	50579	50586	50573	50583	50572	50588	50573	50577	50546	50595
15	50551	50555	50551	50563	50581	50571	50570	50589	50560	50572	50587	50574	50576	50527	50596
16	50569	50551	50565	50560	50554	50589	50557	50589	50583	50573	50587	50584	50589	50541	50589
17	50553	50552	50570	50542	50541	50572	50565	50577	50588	50572	50574	50591	50576	50527	50551
18	50555	50555	50561	50563	50562	50578	50584	50572	50583	50572	50574	50584	50586	50536	50596
19	50555	50557	50542	50557	50560	50574	50587	50573	50560	50575	50587	50576	50576	50532	50596
20	50553	50554	50544	50563	50561	50577	50571	50588	50584	50572	50587	50577	50572	50537	50589
21	50554	50558	50562	50556	50560	50579	50559	50588	50573	50573	50587	50574	50572	50550	50590
22	50555	50555	50564	50559	50556	50580	50558	50572	50587	50570	50587	50583	50590	50531	50596
23	50552	50552	50557	50557	50557	50580	50571	50586	50572	50576	50588	50576	50572	50535	50600
25	50570	50555	50567	50578	50570	50577	50571	50572	50563	50577	50574	50584	50573	50530	50589
30	50583	50553	50567	50561	50557	50580	50564	50588	50588	50574	50574	50585	50573	50548	50590
40	50570	50555	50591	50560	50560	50572	50582	50582	50583	50567	50587	50587	50576	50527	50589

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	50548 bytes	–	100%
1,000	50533 bytes	-15 bytes	100%
10,000	50529 bytes	-4 bytes	100%
100,000	50527 bytes	-2 bytes	2.90%
1,000,000	–	–	–
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)	50672 bytes	+145 bytes (+0.29%)	–
1	50672 bytes	+145 bytes (+0.29%)	–
2	50696 bytes	+169 bytes (+0.33%)	+24 bytes
3	50691 bytes	+164 bytes (+0.32%)	+19 bytes
4	50710 bytes	+183 bytes (+0.36%)	+38 bytes
5	50730 bytes	+203 bytes (+0.40%)	+58 bytes
6	50721 bytes	+194 bytes (+0.38%)	+49 bytes
7	50745 bytes	+218 bytes (+0.43%)	+73 bytes
8	50788 bytes	+261 bytes (+0.52%)	+116 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	39540 bytes	-10987 bytes (-21.74%)
RAR (proprietary)	RAR	rar a -m5 -md64m -mc63:128t -mt1	41664 bytes	-8863 bytes (-17.54%)
PPMd (Wikipedia)	7zip	7za a -mx=9 -m0=ppmd	42881 bytes	-7646 bytes (-15.13%)
Brotli (Wikipedia)	brotli	brotli -q 11	46132 bytes	-4395 bytes (-8.70%)
Burrows-Wheeler transform (Wikipedia)	bzip2	bzip2 -9	46963 bytes	-3564 bytes (-7.05%)
LZMA2 (Wikipedia)	xz	xz -9	47504 bytes	-3023 bytes (-5.98%)
Zstandard (Wikipedia)	zstd	zstd -19	48927 bytes	-1600 bytes (-3.17%)

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.