AngularJS 1.6.9 - as small as it gets (near-perfect GZIP compression)

Choose a version:

The original file has 1289501 bytes (1,259.3k) and is available from the project website.
There you can find the official minified version, too, which brings down the size to 169920 bytes (165.9k, 13%).

After GZIP compression these minified files vary in size:

Boot	68622 bytes (67.0k)	CDN
cdnjs	59728 bytes (58.3k)	CDN
Google	59580 bytes (58.2k)	CDN
unpkg	59293 bytes (57.9k)	CDN
gzip -6 (default)	59264 bytes (57.9k)	local copy
gzip -9	59126 bytes (57.7k)	local copy
7zip -mx=9 -tgzip	57306 bytes (56.0k)	local copy
libdeflate -12	57298 bytes (56.0k)	local copy
kzip -s0 -rn -b1	57297 bytes (56.0k)	local copy
zultra	57246 bytes (55.9k)	local copy
pigz -11 -n	57209 bytes (55.9k)	local copy
Zopfli	57177 bytes (55.8k)	local copy
Zopfli (defluff)	57176 bytes (55.8k)	local copy

perma-link to the smallest file on my server:
http://minime.stephan-brumme.com/files/angularjs/angular-1.6.9.min.js (or via HTTPS)

You will automatically get the smallest AngularJS 1.6.9 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 2116 bytes by using my AngularJS 1.6.9 Zopfli version instead of the best available CDN (3.70% smaller than unpkg, 57177 vs. 59293 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 --mls512 --bsr18 --lazy --ohh

(found February 3, 2018)

Description	Value	Parameter
iterations	1000000	--i1000000
maximum blocks	8	--mb8
maximum length score	512	--mls512
block splitting recursion	18	--bsr18
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 (57176 bytes).

Download

Verify file integrity

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

MD5:
curl --silent --compressed https://code.angularjs.org/1.6.9/angular.min.js --location | md5sum
ca6464a8e26218520f4b0c3bf2137013 -
curl --silent --compressed https://minime.stephan-brumme.com/files/angularjs/angular-1.6.9.min.zopfli.js.gz | md5sum
ca6464a8e26218520f4b0c3bf2137013 -

SHA1:
curl --silent --compressed https://code.angularjs.org/1.6.9/angular.min.js --location | sha1sum
382ea6ce5bb85a666aa9fb35a4c24eed58441258 -
curl --silent --compressed https://minime.stephan-brumme.com/files/angularjs/angular-1.6.9.min.zopfli.js.gz | sha1sum
382ea6ce5bb85a666aa9fb35a4c24eed58441258 -

All listed CDNs deliver identical contents:

CDN	Size (compressed)	MD5 (uncompressed)	Timestamp
Boot	68622 bytes	ca6464a8e26218520f4b0c3bf2137013	February 3, 2018 @ 10:23
cdnjs	59728 bytes	ca6464a8e26218520f4b0c3bf2137013	February 2, 2018 @ 17:34
Google	59580 bytes	ca6464a8e26218520f4b0c3bf2137013	February 10, 2018 @ 20:15
unpkg	59293 bytes	ca6464a8e26218520f4b0c3bf2137013	(invalid)

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
57177 bytes	-2 bytes	zopfli --i1000000 --mls512 --bsr18 --lazy --ohh	February 3, 2018 @ 01:31
57179 bytes	-6 bytes	zopfli --i100000 --mls512 --bsr18 --lazy --ohh	February 2, 2018 @ 16:59
57185 bytes	-3 bytes	zopfli --i10000 --mls512 --bsr18 --lazy --ohh	February 2, 2018 @ 15:35
57188 bytes	-1 byte	zopfli --i1000 --mls512 --bsr18 --lazy --ohh	February 2, 2018 @ 15:25
57189 bytes	-1 byte	zopfli --i1000 --mls512 --bsr13 --lazy --ohh	February 2, 2018 @ 15:25
57190 bytes	-1 byte	zopfli --i1000 --mls512 --bsr19 --lazy --ohh	February 2, 2018 @ 15:25
57191 bytes	-16 bytes	zopfli --i1000 --mls512 --bsr16 --lazy --ohh	February 2, 2018 @ 15:25
57207 bytes	–	zopfli --i100 --mls512 --bsr18 --lazy --ohh	February 2, 2018 @ 15:22

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, 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	57235	57235	57233	57235	57237	57237	57238	57238	57236	57234	57306	57218	57308	57209	57237
4	57226	57214	57213	57218	57221	57216	57215	57199	57209	57210	57195	57214	57208	57205	57213
6	57214	57224	57217	57223	57219	57219	57222	57217	57209	57213	57210	57214	57210	57199	57219
7	57220	57215	57217	57219	57201	57216	57207	57198	57202	57209	57218	57215	57212	57201	57213
8	57228	57212	57212	57223	57214	57219	57212	57216	57200	57206	57208	57212	57211	57207	57214
9	57223	57223	57211	57227	57221	57211	57207	57198	57205	57218	57210	57207	57213	57205	57207
10	57222	57200	57198	57202	57199	57189	57200	57194	57187	57187	57194	57213	57206	57199	57214
11	57218	57200	57199	57199	57201	57199	57200	57187	57193	57193	57197	57213	57210	57213	57211
12	57225	57225	57209	57231	57199	57200	57179	57201	57187	57194	57196	57208	57191	57200	57218
13	57220	57212	57198	57217	57200	57189	57201	57179	57187	57211	57194	57207	57194	57202	57210
14	57233	57216	57202	57223	57201	57201	57199	57189	57188	57199	57196	57208	57199	57199	57210
15	57228	57201	57201	57202	57189	57199	57195	57187	57182	57198	57199	57208	57195	57200	57215
16	57206	57201	57200	57202	57201	57200	57198	57188	57189	57196	57197	57208	57193	57202	57214
17	57232	57206	57190	57201	57201	57201	57200	57188	57187	57198	57197	57208	57191	57200	57228
18	57216	57199	57189	57201	57200	57201	57200	57188	57177	57194	57198	57214	57194	57202	57201
19	57229	57205	57193	57201	57200	57190	57203	57188	57187	57197	57196	57209	57196	57198	57220
20	57242	57202	57190	57217	57200	57201	57200	57200	57180	57196	57195	57208	57197	57200	57218
21	57205	57199	57199	57219	57200	57199	57188	57187	57192	57196	57198	57208	57213	57205	57217
22	57201	57200	57198	57216	57190	57199	57200	57188	57193	57197	57198	57214	57195	57202	57220
23	57227	57203	57208	57201	57201	57199	57203	57199	57187	57197	57195	57207	57207	57208	57213
25	57205	57206	57210	57215	57203	57201	57200	57195	57188	57197	57195	57207	57209	57202	57221
30	57232	57200	57189	57210	57199	57200	57200	57187	57194	57199	57198	57213	57192	57201	57208
40	57214	57214	57215	57213	57205	57206	57207	57189	57187	57199	57192	57197	57192	57205	57219

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	57207 bytes	–	100%
1,000	57188 bytes	-19 bytes	100%
10,000	57185 bytes	-3 bytes	100%
100,000	57179 bytes	-6 bytes	1.45%
1,000,000	57177 bytes	-2 bytes	0.87%
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)	57313 bytes	+136 bytes (+0.24%)	+16 bytes
1	57297 bytes	+120 bytes (+0.21%)	–
2	57306 bytes	+129 bytes (+0.23%)	+9 bytes
3	57312 bytes	+135 bytes (+0.24%)	+15 bytes
4	57333 bytes	+156 bytes (+0.27%)	+36 bytes
5	57338 bytes	+161 bytes (+0.28%)	+41 bytes
6	57329 bytes	+152 bytes (+0.27%)	+32 bytes
7	57358 bytes	+181 bytes (+0.32%)	+61 bytes
8	57369 bytes	+192 bytes (+0.34%)	+72 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	44148 bytes	-13029 bytes (-22.79%)
RAR (proprietary)	RAR	rar a -m5 -md64m -mc63:128t -mt1	46656 bytes	-10521 bytes (-18.40%)
PPMd (Wikipedia)	7zip	7za a -mx=9 -m0=ppmd	48397 bytes	-8780 bytes (-15.36%)
Brotli (Wikipedia)	brotli	brotli -q 11	51966 bytes	-5211 bytes (-9.11%)
Burrows-Wheeler transform (Wikipedia)	bzip2	bzip2 -9	52714 bytes	-4463 bytes (-7.81%)
LZMA2 (Wikipedia)	xz	xz -9	53444 bytes	-3733 bytes (-6.53%)
Zstandard (Wikipedia)	zstd	zstd -19	55035 bytes	-2142 bytes (-3.75%)

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 2025.
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.