AngularJS 1.4.9 - as small as it gets (near-perfect GZIP compression)

Choose a version:

The original file has 1092132 bytes (1,066.5k) and is available from the project website.
There you can find the official minified version, too, which brings down the size to 150014 bytes (146.5k, 14%).

After GZIP compression these minified files vary in size:

Boot	61228 bytes (59.8k)	CDN
cdnjs	53215 bytes (52.0k)	CDN
unpkg	53215 bytes (52.0k)	CDN
gzip -6 (default)	53212 bytes (52.0k)	local copy
Google	53146 bytes (51.9k)	CDN
gzip -9	53124 bytes (51.9k)	local copy
7zip -mx=9 -tgzip	51458 bytes (50.3k)	local copy
kzip -s0 -rn -b1	51452 bytes (50.2k)	local copy
libdeflate -12	51448 bytes (50.2k)	local copy
zultra	51421 bytes (50.2k)	local copy
pigz -11 -n	51409 bytes (50.2k)	local copy
Zopfli	51315 bytes (50.1k)	local copy
Zopfli (defluff)	51314 bytes (50.1k)	local copy

perma-link to the smallest file on my server:
http://minime.stephan-brumme.com/files/angularjs/angular-1.4.9.min.js (or via HTTPS)

You will automatically get the smallest AngularJS 1.4.9 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 1831 bytes by using my AngularJS 1.4.9 Zopfli version instead of the best available CDN (3.57% smaller than Google, 51315 vs. 53146 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 --mls16384 --bsr11 --lazy --ohh

(found January 22, 2016)

Description	Value	Parameter
iterations	1000000	--i1000000
maximum blocks	8	--mb8
maximum length score	16384	--mls16384
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 (51314 bytes).

Download

Verify file integrity

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

MD5:
curl --silent --compressed https://code.angularjs.org/1.4.9/angular.min.js --location | md5sum
9324788c75670e5a821cd5d2355f0754 -
curl --silent --compressed https://minime.stephan-brumme.com/files/angularjs/angular-1.4.9.min.zopfli.js.gz | md5sum
9324788c75670e5a821cd5d2355f0754 -

SHA1:
curl --silent --compressed https://code.angularjs.org/1.4.9/angular.min.js --location | sha1sum
d8bd332ad93eca846b34bb8abfc8a5d7dbebeba2 -
curl --silent --compressed https://minime.stephan-brumme.com/files/angularjs/angular-1.4.9.min.zopfli.js.gz | sha1sum
d8bd332ad93eca846b34bb8abfc8a5d7dbebeba2 -

All listed CDNs deliver identical contents:

CDN	Size (compressed)	MD5 (uncompressed)	Timestamp
Boot	61228 bytes	9324788c75670e5a821cd5d2355f0754	January 23, 2016 @ 18:37
cdnjs	53215 bytes	9324788c75670e5a821cd5d2355f0754	January 22, 2016 @ 08:02
unpkg	53215 bytes	9324788c75670e5a821cd5d2355f0754	July 11, 2016 @ 15:52
Google	53146 bytes	9324788c75670e5a821cd5d2355f0754	January 21, 2016 @ 15:25

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
51315 bytes	-4 bytes	zopfli --i1000000 --mls16384 --bsr11 --lazy --ohh	January 22, 2016 @ 22:39
51319 bytes	-2 bytes	zopfli --i100000 --mls2 --bsr19 --lazy --ohh	January 22, 2016 @ 11:56
51321 bytes	-6 bytes	zopfli --i10000 --mls2 --bsr19 --lazy --ohh	January 22, 2016 @ 09:48
51327 bytes	-3 bytes	zopfli --i10000 --mls8 --bsr22 --lazy --ohh	January 22, 2016 @ 09:36
51330 bytes	-1 byte	zopfli --i1000 --mls8 --bsr22 --lazy --ohh	January 22, 2016 @ 09:30
51331 bytes	-6 bytes	zopfli --i1000 --mls2 --bsr19 --lazy --ohh	January 22, 2016 @ 09:29
51337 bytes	-4 bytes	zopfli --i1000 --mls16 --bsr25 --lazy --ohh	January 22, 2016 @ 09:25
51341 bytes	-6 bytes	zopfli --i1000 --mls32 --bsr15 --lazy --ohh	January 22, 2016 @ 09:24
51347 bytes	–	zopfli --i100 --mls32 --bsr15 --lazy --ohh	January 22, 2016 @ 09:21

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 @ 12:47.

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	51375	51376	51377	51375	51375	51375	51377	51378	51380	51379	51363	51364	51365	51374	51374
4	51362	51335	51336	51359	51365	51357	51351	51356	51363	51363	51351	51361	51362	51332	51369
6	51360	51340	51335	51327	51365	51346	51352	51357	51360	51362	51364	51363	51362	51333	51368
7	51330	51338	51334	51347	51343	51365	51353	51367	51345	51351	51361	51349	51352	51328	51367
8	51356	51338	51341	51343	51361	51347	51355	51358	51348	51360	51358	51366	51364	51330	51363
9	51356	51349	51365	51339	51357	51350	51352	51360	51362	51345	51349	51351	51354	51331	51367
10	51363	51340	51335	51333	51338	51345	51352	51359	51360	51345	51361	51351	51352	51355	51366
11	51356	51342	51332	51336	51339	51346	51347	51357	51357	51360	51362	51353	51364	51315	51366
12	51339	51336	51337	51336	51331	51346	51356	51356	51362	51351	51361	51348	51352	51356	51367
13	51358	51339	51336	51342	51333	51350	51349	51355	51345	51345	51361	51349	51353	51331	51366
14	51360	51345	51324	51335	51365	51349	51358	51357	51357	51363	51362	51349	51354	51328	51367
15	51334	51345	51337	51335	51331	51349	51353	51357	51346	51344	51362	51349	51352	51327	51366
16	51354	51322	51337	51334	51343	51346	51355	51355	51354	51346	51344	51359	51349	51332	51366
17	51335	51341	51340	51334	51331	51346	51357	51357	51358	51360	51361	51349	51350	51327	51368
18	51360	51334	51345	51334	51339	51349	51352	51356	51357	51351	51348	51344	51352	51330	51366
19	51316	51339	51330	51333	51334	51349	51356	51356	51344	51351	51362	51350	51352	51327	51366
20	51339	51340	51340	51338	51344	51345	51352	51356	51357	51345	51349	51347	51352	51331	51363
21	51338	51331	51321	51334	51335	51349	51353	51356	51357	51345	51361	51349	51352	51327	51366
22	51326	51340	51323	51335	51334	51350	51352	51356	51359	51345	51362	51344	51352	51334	51363
23	51357	51343	51342	51335	51331	51361	51353	51357	51357	51360	51349	51352	51353	51336	51369
25	51336	51340	51338	51332	51331	51352	51351	51356	51349	51363	51350	51346	51361	51333	51361
30	51355	51347	51349	51346	51366	51339	51345	51356	51344	51360	51349	51346	51361	51321	51366
40	51355	51360	51362	51359	51348	51336	51344	51345	51338	51344	51361	51344	51349	51330	51360

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	51338 bytes	–	100%
1,000	51328 bytes	-10 bytes	100%
10,000	51321 bytes	-7 bytes	100%
100,000	51319 bytes	-2 bytes	4.35%
1,000,000	51315 bytes	-4 bytes	0.58%
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)	51453 bytes	+138 bytes (+0.27%)	+1 byte
1	51452 bytes	+137 bytes (+0.27%)	–
2	51456 bytes	+141 bytes (+0.27%)	+4 bytes
3	51463 bytes	+148 bytes (+0.29%)	+11 bytes
4	51482 bytes	+167 bytes (+0.33%)	+30 bytes
5	51495 bytes	+180 bytes (+0.35%)	+43 bytes
6	51487 bytes	+172 bytes (+0.34%)	+35 bytes
7	51525 bytes	+210 bytes (+0.41%)	+73 bytes
8	51508 bytes	+193 bytes (+0.38%)	+56 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	40037 bytes	-11278 bytes (-21.98%)
RAR (proprietary)	RAR	rar a -m5 -md64m -mc63:128t -mt1	42191 bytes	-9124 bytes (-17.78%)
PPMd (Wikipedia)	7zip	7za a -mx=9 -m0=ppmd	43493 bytes	-7822 bytes (-15.24%)
Brotli (Wikipedia)	brotli	brotli -q 11	46708 bytes	-4607 bytes (-8.98%)
Burrows-Wheeler transform (Wikipedia)	bzip2	bzip2 -9	47567 bytes	-3748 bytes (-7.30%)
LZMA2 (Wikipedia)	xz	xz -9	48160 bytes	-3155 bytes (-6.15%)
Zstandard (Wikipedia)	zstd	zstd -19	49583 bytes	-1732 bytes (-3.38%)

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.