AngularJS 0.9.5 - as small as it gets (near-perfect GZIP compression)

Choose a version:

The original file has 292521 bytes (285.7k) and is available from the project website.
There you can find the official minified version, too, which brings down the size to 58737 bytes (57.4k, 20%).

After GZIP compression these minified files vary in size:

Boot	26718 bytes (26.1k)	CDN
Baidu	24154 bytes (23.6k)	CDN
cdnjs	24090 bytes (23.5k)	CDN
gzip -6 (default)	24014 bytes (23.5k)	local copy
gzip -9	23981 bytes (23.4k)	local copy
libdeflate -12	23392 bytes (22.8k)	local copy
7zip -mx=9 -tgzip	23108 bytes (22.6k)	local copy
zultra	23052 bytes (22.5k)	local copy
kzip -s0 -rn -b3	23014 bytes (22.5k)	local copy
pigz -11 -n	23007 bytes (22.5k)	local copy
Zopfli	22981 bytes (22.4k)	local copy
Zopfli (defluff)	22980 bytes (22.4k)	local copy

perma-link to the smallest file on my server:
http://minime.stephan-brumme.com/files/angularjs/angular-0.9.5.min.js (or via HTTPS)

You will automatically get the smallest AngularJS 0.9.5 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 1109 bytes by using my AngularJS 0.9.5 Zopfli version instead of the best available CDN (4.83% smaller than cdnjs, 22981 vs. 24090 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 --mls256 --bsr11 --lazy --ohh

(found February 4, 2016)

Description	Value	Parameter
iterations	100000	--i100000
maximum blocks	8	--mb8
maximum length score	256	--mls256
block splitting recursion	11	--bsr11
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 (22980 bytes).

Download

Verify file integrity

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

MD5:
curl --silent --compressed https://code.angularjs.org/0.9.5/angular-0.9.5.min.js --location | md5sum
92cc47417e306ba6e4daf095fa2d9464 -
curl --silent --compressed https://minime.stephan-brumme.com/files/angularjs/angular-0.9.5.min.zopfli.js.gz | md5sum
92cc47417e306ba6e4daf095fa2d9464 -

SHA1:
curl --silent --compressed https://code.angularjs.org/0.9.5/angular-0.9.5.min.js --location | sha1sum
b3c8964ffed69bb5a0dd3867e699d618a70d0f98 -
curl --silent --compressed https://minime.stephan-brumme.com/files/angularjs/angular-0.9.5.min.zopfli.js.gz | sha1sum
b3c8964ffed69bb5a0dd3867e699d618a70d0f98 -

These CDNs send you the original file:

CDN	Size (compressed)	MD5 (uncompressed)	Timestamp
Boot	26718 bytes	92cc47417e306ba6e4daf095fa2d9464	March 18, 2015 @ 10:05
cdnjs	24090 bytes	92cc47417e306ba6e4daf095fa2d9464	March 28, 2014 @ 14:15

And some CDNs send you a different file:

CDN	Size (compressed)	MD5 (uncompressed)	Comment / Diff	Timestamp
Baidu	24154 bytes	b6e0aa201ada7b9bfbb84295e8688b61	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
22981 bytes	-2 bytes	zopfli --i100000 --mls256 --bsr11 --lazy --ohh	February 4, 2016 @ 23:17
22983 bytes	-2 bytes	zopfli --i10000 --mls256 --bsr9 --lazy --ohh	November 26, 2015 @ 10:55
22985 bytes	-6 bytes	zopfli --i1000 --mls256 --bsr9 --lazy --ohh	September 17, 2015 @ 04:46
22991 bytes	-1 byte	zopfli --i1000 --mls8192 --bsr9 --lazy --ohh	September 7, 2015 @ 21:42
22992 bytes	-1 byte	zopfli --i1000 --mls1024 --bsr16 --lazy --ohh	September 7, 2015 @ 21:41
22993 bytes	-1 byte	zopfli --i1000 --mls512 --bsr14 --lazy --ohh	September 7, 2015 @ 21:40
22994 bytes	-4 bytes	zopfli --i1000 --mls512 --bsr6 --lazy --ohh	September 7, 2015 @ 21:39
22998 bytes	–	zopfli --i100 --mls8192 --bsr9 --lazy --ohh	September 7, 2015 @ 16:11

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 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	23010	23011	23011	23006	23004	23007	23009	23010	23020	23018	23025	23020	23021	23028	23030
4	22992	23013	22989	23017	23019	23018	23016	23013	22999	23002	23010	22999	22992	23004	23005
6	22994	22999	22996	23002	23004	23010	23011	22992	22991	22994	23001	23008	22996	23010	23007
7	23005	23003	23007	22994	22994	22995	22997	22993	22994	23004	22992	23014	23000	22998	23019
8	23006	23009	22992	22993	22998	23000	22995	22997	23003	22992	23000	22992	22990	23010	23011
9	23006	22996	22991	22994	22994	22993	22994	22981	23000	22990	23001	22991	22989	23004	23004
10	22999	22993	22991	22994	22993	22992	22993	22981	22991	22996	22997	22990	22989	22998	23006
11	22997	22997	22991	22994	22992	22991	22993	22981	22994	22997	22991	22991	22995	23002	23010
12	22993	22998	22993	22990	22992	22993	22993	22993	22993	22994	22997	22993	22990	22998	23008
13	23000	22996	22991	22991	22990	22991	22993	22992	22998	22999	22995	22992	22990	23006	23012
14	22995	22997	22991	22993	22990	22992	22997	22996	22992	22993	22991	22992	23008	22999	23007
15	23005	23004	22999	22991	22995	22994	22992	22993	22994	22998	22991	22992	22989	23001	23006
16	22998	22998	22991	22994	22991	22992	22995	22992	22994	22990	22989	22995	22990	22999	23005
17	22999	22991	22991	22993	22993	22993	22994	22995	22993	22999	22993	22998	22990	22999	23021
18	22998	22998	23007	22995	22994	22995	22994	22995	22995	22992	22992	22993	22992	22999	23012
19	23001	22999	22992	22993	22990	22993	22995	22995	22995	22997	22991	22995	22990	23001	23007
20	22998	22992	22991	22995	22995	22992	23000	22998	22995	22995	22992	22990	22997	23007	23015
21	22998	22998	22994	22994	22994	22995	22992	22982	22994	22994	22993	22990	22995	22998	23007
22	22994	22998	22991	22992	22992	22994	22995	22992	22995	22993	22994	22992	22999	22999	23009
23	23000	22996	22994	22995	22992	22993	22995	22991	22995	22993	22992	22991	22990	23004	23006
25	22998	22998	22991	22993	22994	22993	22994	22982	23000	22991	22990	22991	22990	22998	23006
30	23006	22994	22991	22992	22993	22993	22998	22993	22995	22993	22991	22992	22990	22998	23006
40	22999	22994	22992	22993	22991	22993	22994	22992	22994	22992	22992	22991	22990	22999	23008

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	22991 bytes	–	100%
1,000	22985 bytes	-6 bytes	100%
10,000	22983 bytes	-2 bytes	100%
100,000	22981 bytes	-2 bytes	1.45%
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)	23078 bytes	+97 bytes (+0.42%)	+64 bytes
1	23481 bytes	+500 bytes (+2.18%)	+467 bytes
2	23077 bytes	+96 bytes (+0.42%)	+63 bytes
3	23014 bytes	+33 bytes (+0.14%)	–
4	23029 bytes	+48 bytes (+0.21%)	+15 bytes
5	23045 bytes	+64 bytes (+0.28%)	+31 bytes
6	23078 bytes	+97 bytes (+0.42%)	+64 bytes
7	23110 bytes	+129 bytes (+0.56%)	+96 bytes
8	23127 bytes	+146 bytes (+0.64%)	+113 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	20193 bytes	-2788 bytes (-12.13%)
RAR (proprietary)	RAR	rar a -m5 -md64m -mc63:128t -mt1	20723 bytes	-2258 bytes (-9.83%)
Brotli (Wikipedia)	brotli	brotli -q 11	21329 bytes	-1652 bytes (-7.19%)
PPMd (Wikipedia)	7zip	7za a -mx=9 -m0=ppmd	21728 bytes	-1253 bytes (-5.45%)
LZMA2 (Wikipedia)	xz	xz -9	22596 bytes	-385 bytes (-1.68%)
Burrows-Wheeler transform (Wikipedia)	bzip2	bzip2 -9	23197 bytes	+216 bytes (+0.94%)
Zstandard (Wikipedia)	zstd	zstd -19	23247 bytes	+266 bytes (+1.16%)

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.