AngularJS 1.3.18 - as small as it gets (near-perfect GZIP compression)

Choose a version:

The original file has 965742 bytes (943.1k) and is available from the project website.
There you can find the official minified version, too, which brings down the size to 126425 bytes (123.5k, 13%).

After GZIP compression these minified files vary in size:

Boot	53262 bytes (52.0k)	CDN
cdnjs	46793 bytes (45.7k)	CDN
unpkg	46527 bytes (45.4k)	CDN
gzip -6 (default)	46487 bytes (45.4k)	local copy
Google	46433 bytes (45.3k)	CDN
gzip -9	46391 bytes (45.3k)	local copy
7zip -mx=9 -tgzip	45036 bytes (44.0k)	local copy
kzip -s0 -rn -b0	44990 bytes (43.9k)	local copy
libdeflate -12	44990 bytes (43.9k)	local copy
zultra	44990 bytes (43.9k)	local copy
pigz -11 -n	44926 bytes (43.9k)	local copy
Zopfli	44889 bytes (43.8k)	local copy
Zopfli (defluff)	44888 bytes (43.8k)	local copy

perma-link to the smallest file on my server:
http://minime.stephan-brumme.com/files/angularjs/angular-1.3.18.min.js (or via HTTPS)

You will automatically get the smallest AngularJS 1.3.18 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 1544 bytes by using my AngularJS 1.3.18 Zopfli version instead of the best available CDN (3.44% smaller than Google, 44889 vs. 46433 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 --bsr17 --lazy --ohh

(found November 30, 2015)

Description	Value	Parameter
iterations	100000	--i100000
maximum blocks	8	--mb8
maximum length score	256	--mls256
block splitting recursion	17	--bsr17
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 (44888 bytes).

Download

Verify file integrity

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

MD5:
curl --silent --compressed https://code.angularjs.org/1.3.18/angular.min.js --location | md5sum
f2fe1b29b6f82a1c4272b09b6903766f -
curl --silent --compressed https://minime.stephan-brumme.com/files/angularjs/angular-1.3.18.min.zopfli.js.gz | md5sum
f2fe1b29b6f82a1c4272b09b6903766f -

SHA1:
curl --silent --compressed https://code.angularjs.org/1.3.18/angular.min.js --location | sha1sum
c2b409b0e6066373ca9d1baabb49831e3fc6bfa6 -
curl --silent --compressed https://minime.stephan-brumme.com/files/angularjs/angular-1.3.18.min.zopfli.js.gz | sha1sum
c2b409b0e6066373ca9d1baabb49831e3fc6bfa6 -

All listed CDNs deliver identical contents:

CDN	Size (compressed)	MD5 (uncompressed)	Timestamp
Boot	53262 bytes	f2fe1b29b6f82a1c4272b09b6903766f	August 22, 2015 @ 05:20
cdnjs	46793 bytes	f2fe1b29b6f82a1c4272b09b6903766f	August 19, 2015 @ 09:49
unpkg	46527 bytes	f2fe1b29b6f82a1c4272b09b6903766f	July 11, 2016 @ 15:53
Google	46433 bytes	f2fe1b29b6f82a1c4272b09b6903766f	August 19, 2015 @ 20:26

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
44889 bytes	-1 byte	zopfli --i100000 --mls256 --bsr17 --lazy --ohh	November 30, 2015 @ 15:18
44890 bytes	-1 byte	zopfli --i10000 --mls256 --bsr12 --lazy --ohh	September 18, 2015 @ 09:38
44891 bytes	-4 bytes	zopfli --i10000 --mls128 --bsr9 --lazy --ohh	September 18, 2015 @ 08:14
44895 bytes	-1 byte	zopfli --i10000 --mls2048 --bsr14 --lazy --ohh	September 8, 2015 @ 17:29
44896 bytes	-4 bytes	zopfli --i10000 --mls512 --bsr16 --lazy --ohh	September 8, 2015 @ 16:32
44900 bytes	-2 bytes	zopfli --i10000 --mls512 --bsr6 --lazy --ohh	September 8, 2015 @ 16:28
44902 bytes	-4 bytes	zopfli --i1000 --mls2048 --bsr13 --lazy --ohh	September 7, 2015 @ 18:13
44906 bytes	-1 byte	zopfli --i1000 --mls2048 --bsr9 --lazy --ohh	September 7, 2015 @ 18:13
44907 bytes	-1 byte	zopfli --i1000 --mls1024 --bsr16 --lazy --ohh	September 7, 2015 @ 18:12
44908 bytes	–	zopfli --i100 --mls4096 --bsr8 --lazy --ohh	September 7, 2015 @ 16:56

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 @ 12:48.

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	44911	44918	44917	44919	44918	44918	44929	44910	44911	44914	44913	44913	44911	44913	44928
4	44922	44919	44918	44922	44927	44930	44911	44909	44915	44912	44913	44911	44904	44902	44928
6	44908	44915	44924	44925	44911	44913	44900	44898	44900	44901	44911	44902	44902	44901	44913
7	44914	44921	44917	44898	44909	44900	44901	44903	44908	44902	44910	44908	44900	44906	44912
8	44897	44918	44911	44910	44909	44917	44901	44900	44909	44908	44901	44897	44906	44902	44911
9	44910	44918	44917	44919	44910	44902	44891	44893	44909	44911	44901	44908	44904	44904	44910
10	44909	44918	44917	44911	44904	44900	44901	44893	44910	44909	44899	44909	44902	44902	44909
11	44920	44918	44918	44910	44908	44904	44901	44901	44904	44912	44899	44902	44900	44902	44931
12	44913	44907	44912	44907	44905	44904	44901	44890	44909	44899	44900	44898	44897	44901	44927
13	44900	44902	44917	44925	44910	44922	44893	44890	44909	44908	44897	44898	44899	44902	44928
14	44911	44918	44921	44920	44910	44902	44900	44889	44913	44916	44895	44910	44900	44902	44904
15	44916	44903	44917	44909	44909	44900	44902	44895	44909	44903	44911	44909	44899	44902	44912
16	44903	44918	44918	44911	44908	44900	44889	44900	44896	44900	44897	44905	44901	44902	44899
17	44901	44918	44917	44907	44909	44903	44908	44889	44894	44907	44894	44908	44904	44901	44910
18	44899	44918	44917	44908	44917	44911	44902	44892	44910	44897	44897	44900	44899	44902	44911
19	44911	44916	44917	44919	44909	44917	44901	44891	44904	44908	44899	44894	44899	44902	44927
20	44911	44918	44918	44910	44919	44919	44901	44891	44912	44907	44901	44908	44903	44902	44910
21	44903	44890	44908	44909	44910	44901	44890	44889	44909	44908	44899	44909	44904	44902	44909
22	44905	44918	44910	44910	44900	44901	44900	44902	44909	44909	44913	44909	44899	44902	44913
23	44904	44918	44908	44910	44908	44902	44901	44901	44905	44910	44901	44895	44899	44902	44908
25	44911	44918	44917	44908	44917	44918	44900	44891	44909	44908	44896	44895	44899	44901	44901
30	44904	44918	44917	44909	44910	44900	44901	44895	44912	44911	44898	44908	44900	44901	44927
40	44910	44918	44918	44907	44909	44903	44896	44889	44909	44909	44894	44908	44900	44902	44924

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	44906 bytes	–	100%
1,000	44897 bytes	-9 bytes	100%
10,000	44890 bytes	-7 bytes	100%
100,000	44889 bytes	-1 byte	2.61%
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)	44990 bytes	+101 bytes (+0.22%)	–
1	44993 bytes	+104 bytes (+0.23%)	+3 bytes
2	45004 bytes	+115 bytes (+0.26%)	+14 bytes
3	45042 bytes	+153 bytes (+0.34%)	+52 bytes
4	45058 bytes	+169 bytes (+0.38%)	+68 bytes
5	45101 bytes	+212 bytes (+0.47%)	+111 bytes
6	45124 bytes	+235 bytes (+0.52%)	+134 bytes
7	45106 bytes	+217 bytes (+0.48%)	+116 bytes
8	45106 bytes	+217 bytes (+0.48%)	+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	35821 bytes	-9068 bytes (-20.20%)
RAR (proprietary)	RAR	rar a -m5 -md64m -mc63:128t -mt1	37390 bytes	-7499 bytes (-16.71%)
PPMd (Wikipedia)	7zip	7za a -mx=9 -m0=ppmd	39223 bytes	-5666 bytes (-12.62%)
Brotli (Wikipedia)	brotli	brotli -q 11	41258 bytes	-3631 bytes (-8.09%)
Burrows-Wheeler transform (Wikipedia)	bzip2	bzip2 -9	41974 bytes	-2915 bytes (-6.49%)
LZMA2 (Wikipedia)	xz	xz -9	42652 bytes	-2237 bytes (-4.98%)
Zstandard (Wikipedia)	zstd	zstd -19	43819 bytes	-1070 bytes (-2.38%)

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.