AngularJS 0.9.19 - as small as it gets (near-perfect GZIP compression)

Choose a version:

The original file has 373089 bytes (364.3k) and is available from the project website.
There you can find the official minified version, too, which brings down the size to 66321 bytes (64.8k, 18%).

After GZIP compression these minified files vary in size:

Boot	30192 bytes (29.5k)	CDN
Baidu	27092 bytes (26.5k)	CDN
cdnjs	27013 bytes (26.4k)	CDN
gzip -6 (default)	26848 bytes (26.2k)	local copy
gzip -9	26791 bytes (26.2k)	local copy
libdeflate -12	26369 bytes (25.8k)	local copy
7zip -mx=9 -tgzip	26044 bytes (25.4k)	local copy
zultra	25989 bytes (25.4k)	local copy
pigz -11 -n	25988 bytes (25.4k)	local copy
kzip -s0 -rn -b3	25964 bytes (25.4k)	local copy
Zopfli	25942 bytes (25.3k)	local copy
Zopfli (defluff)	25941 bytes (25.3k)	local copy

perma-link to the smallest file on my server:
http://minime.stephan-brumme.com/files/angularjs/angular-0.9.19.min.js (or via HTTPS)

You will automatically get the smallest AngularJS 0.9.19 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 1071 bytes by using my AngularJS 0.9.19 Zopfli version instead of the best available CDN (4.13% smaller than cdnjs, 25942 vs. 27013 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 --mls128 --bsr10 --lazy --ohh

(found November 26, 2015)

Description	Value	Parameter
iterations	100000	--i100000
maximum blocks	8	--mb8
maximum length score	128	--mls128
block splitting recursion	10	--bsr10
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 (25941 bytes).

Download

Verify file integrity

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

MD5:
curl --silent --compressed https://code.angularjs.org/0.9.19/angular-0.9.19.min.js --location | md5sum
75bd3fd5efc2705893a4ad79f7f25b9f -
curl --silent --compressed https://minime.stephan-brumme.com/files/angularjs/angular-0.9.19.min.zopfli.js.gz | md5sum
75bd3fd5efc2705893a4ad79f7f25b9f -

SHA1:
curl --silent --compressed https://code.angularjs.org/0.9.19/angular-0.9.19.min.js --location | sha1sum
d6dbb39fdb9bf4bca7ecc2686382bf7ec332cd78 -
curl --silent --compressed https://minime.stephan-brumme.com/files/angularjs/angular-0.9.19.min.zopfli.js.gz | sha1sum
d6dbb39fdb9bf4bca7ecc2686382bf7ec332cd78 -

These CDNs send you the original file:

CDN	Size (compressed)	MD5 (uncompressed)	Timestamp
Boot	30192 bytes	75bd3fd5efc2705893a4ad79f7f25b9f	March 18, 2015 @ 10:04
cdnjs	27013 bytes	75bd3fd5efc2705893a4ad79f7f25b9f	January 24, 2014 @ 03:45

And some CDNs send you a different file:

CDN	Size (compressed)	MD5 (uncompressed)	Comment / Diff	Timestamp
Baidu	27092 bytes	542b6417f189ade9936a23ebc369ccdf	only whitespaces differ	June 5, 2014 @ 10:05

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
25942 bytes	-1 byte	zopfli --i100000 --mls128 --bsr10 --lazy --ohh	November 26, 2015 @ 14:34
25943 bytes	-2 bytes	zopfli --i100000 --mls8192 --bsr4 --lazy --ohh	November 26, 2015 @ 12:31
25945 bytes	-1 byte	zopfli --i10000 --mls8192 --bsr4 --lazy --ohh	September 11, 2015 @ 06:26
25946 bytes	-1 byte	zopfli --i10000 --mls4096 --bsr13 --lazy --ohh	September 11, 2015 @ 06:15
25947 bytes	-1 byte	zopfli --i10000 --mls2048 --bsr8 --lazy --ohh	September 11, 2015 @ 05:41
25948 bytes	-1 byte	zopfli --i1000 --mls8192 --bsr4 --lazy --ohh	September 7, 2015 @ 21:56
25949 bytes	-3 bytes	zopfli --i1000 --mls2048 --bsr13 --lazy --ohh	September 7, 2015 @ 21:56
25952 bytes	–	zopfli --i100 --mls8192 --bsr4 --lazy --ohh	September 7, 2015 @ 16:10

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 @ 12:56.

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	25973	25971	25969	25966	25961	25959	25958	25964	25964	25976	25984	25993	25966	25979	25975
4	25974	25950	25947	25956	25956	25955	25952	25953	25953	25954	25958	25954	25943	25979	25960
6	25947	25948	25946	25943	25948	25948	25943	25952	25957	25956	25951	25958	25967	25955	25960
7	25946	25947	25945	25942	25949	25953	25942	25951	25965	25949	25949	25947	25960	25955	25976
8	25949	25955	25947	25954	25960	25956	25956	25948	25954	25956	25945	25946	25962	25953	25973
9	25956	25966	25946	25953	25959	25954	25947	25968	25967	25974	25955	25948	25958	25954	25955
10	25942	25947	25944	25954	25948	25947	25942	25951	25953	25951	25944	25946	25968	25954	25963
11	25950	25955	25950	25954	25958	25952	25942	25947	25953	25959	25952	25947	25956	25952	25973
12	25948	25947	25953	25956	25946	25948	25952	25960	25953	25954	25961	25948	25958	25953	25956
13	25947	25949	25945	25946	25945	25948	25943	25953	25953	25952	25945	25946	25960	25954	25956
14	25947	25954	25954	25953	25957	25952	25945	25951	25953	25953	25948	25944	25961	25954	25957
15	25953	25952	25958	25953	25945	25952	25957	25951	25966	25953	25953	25947	25960	25955	25953
16	25946	25947	25947	25946	25949	25945	25948	25943	25953	25955	25960	25955	25957	25956	25960
17	25956	25946	25946	25947	25958	25954	25945	25951	25952	25947	25957	25946	25958	25950	25960
18	25952	25946	25955	25955	25956	25952	25951	25952	25953	25952	25951	25946	25957	25952	25962
19	25948	25949	25946	25947	25949	25947	25946	25946	25952	25958	25952	25947	25958	25954	25956
20	25954	25954	25951	25954	25957	25951	25945	25949	25955	25953	25948	25947	25958	25953	25961
21	25952	25952	25944	25953	25960	25955	25953	25951	25968	25954	25951	25946	25968	25956	25952
22	25948	25946	25946	25945	25945	25949	25943	25946	25946	25954	25955	25946	25959	25953	25963
23	25957	25948	25953	25953	25957	25952	25946	25947	25953	25955	25949	25947	25961	25953	25955
25	25947	25947	25946	25953	25946	25948	25942	25948	25946	25952	25949	25946	25970	25954	25960
30	25946	25947	25945	25953	25948	25947	25945	25951	25953	25952	25954	25947	25967	25951	25954
40	25947	25946	25946	25953	25956	25947	25946	25951	25953	25958	25949	25947	25958	25955	25964

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	25952 bytes	–	100%
1,000	25947 bytes	-5 bytes	100%
10,000	25944 bytes	-3 bytes	100%
100,000	25942 bytes	-2 bytes	5.22%
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)	26010 bytes	+68 bytes (+0.26%)	+46 bytes
1	26449 bytes	+507 bytes (+1.95%)	+485 bytes
2	26010 bytes	+68 bytes (+0.26%)	+46 bytes
3	25964 bytes	+22 bytes (+0.08%)	–
4	25982 bytes	+40 bytes (+0.15%)	+18 bytes
5	25999 bytes	+57 bytes (+0.22%)	+35 bytes
6	26024 bytes	+82 bytes (+0.32%)	+60 bytes
7	26044 bytes	+102 bytes (+0.39%)	+80 bytes
8	26076 bytes	+134 bytes (+0.52%)	+112 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	22595 bytes	-3347 bytes (-12.90%)
RAR (proprietary)	RAR	rar a -m5 -md64m -mc63:128t -mt1	23134 bytes	-2808 bytes (-10.82%)
PPMd (Wikipedia)	7zip	7za a -mx=9 -m0=ppmd	23208 bytes	-2734 bytes (-10.54%)
Brotli (Wikipedia)	brotli	brotli -q 11	24054 bytes	-1888 bytes (-7.28%)
LZMA2 (Wikipedia)	xz	xz -9	25352 bytes	-590 bytes (-2.27%)
Burrows-Wheeler transform (Wikipedia)	bzip2	bzip2 -9	25867 bytes	-75 bytes (-0.29%)
Zstandard (Wikipedia)	zstd	zstd -19	26121 bytes	+179 bytes (+0.69%)

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.