AngularJS 1.2.16 - as small as it gets (near-perfect GZIP compression)

Choose a version:

The original file has 756488 bytes (738.8k) and is available from the project website.
There you can find the official minified version, too, which brings down the size to 104453 bytes (102.0k, 14%).

After GZIP compression these minified files vary in size:

Boot	44184 bytes (43.1k)	CDN
Baidu	38981 bytes (38.1k)	CDN
cdnjs	38867 bytes (38.0k)	CDN
gzip -6 (default)	38648 bytes (37.7k)	local copy
Google	38588 bytes (37.7k)	CDN
Yandex	38580 bytes (37.7k)	CDN
jsdelivr	38580 bytes (37.7k)	CDN
gzip -9	38576 bytes (37.7k)	local copy
7zip -mx=9 -tgzip	37437 bytes (36.6k)	local copy
libdeflate -12	37434 bytes (36.6k)	local copy
kzip -s0 -rn -b0	37427 bytes (36.5k)	local copy
zultra	37406 bytes (36.5k)	local copy
pigz -11 -n	37376 bytes (36.5k)	local copy
Zopfli	37338 bytes (36.5k)	local copy

perma-link to the smallest file on my server:
http://minime.stephan-brumme.com/files/angularjs/angular-1.2.16.min.js (or via HTTPS)

You will automatically get the smallest AngularJS 1.2.16 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 1242 bytes by using my AngularJS 1.2.16 Zopfli version instead of the best available CDN (3.33% smaller than jsdelivr, 37338 vs. 38580 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 --mls32 --bsr6 --lazy --ohh

(found November 27, 2015)

Description	Value	Parameter
iterations	100000	--i100000
maximum blocks	8	--mb8
maximum length score	32	--mls32
block splitting recursion	6	--bsr6
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

Verify file integrity

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

MD5:
curl --silent --compressed https://code.angularjs.org/1.2.16/angular.min.js --location | md5sum
5ae69803cee77531dce8475a1bc4e78b -
curl --silent --compressed https://minime.stephan-brumme.com/files/angularjs/angular-1.2.16.min.zopfli.js.gz | md5sum
5ae69803cee77531dce8475a1bc4e78b -

SHA1:
curl --silent --compressed https://code.angularjs.org/1.2.16/angular.min.js --location | sha1sum
f3e4b6dc37956d7f2ea8d76f1e614197da0489cc -
curl --silent --compressed https://minime.stephan-brumme.com/files/angularjs/angular-1.2.16.min.zopfli.js.gz | sha1sum
f3e4b6dc37956d7f2ea8d76f1e614197da0489cc -

These CDNs send you the original file:

CDN	Size (compressed)	MD5 (uncompressed)	Timestamp
Boot	44184 bytes	5ae69803cee77531dce8475a1bc4e78b	March 18, 2015 @ 10:26
cdnjs	38867 bytes	5ae69803cee77531dce8475a1bc4e78b	May 8, 2014 @ 17:15
Google	38588 bytes	5ae69803cee77531dce8475a1bc4e78b	April 4, 2014 @ 05:37
Yandex	38580 bytes	5ae69803cee77531dce8475a1bc4e78b	June 11, 2015 @ 14:17
jsdelivr	38580 bytes	5ae69803cee77531dce8475a1bc4e78b	August 7, 2014 @ 18:31

And some CDNs send you a different file:

CDN	Size (compressed)	MD5 (uncompressed)	Comment / Diff	Timestamp
Baidu	38981 bytes	c06b3e0c60d71ee115059dbf104dd14d	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
37338 bytes	-3 bytes	zopfli --i100000 --mls32 --bsr6 --lazy --ohh	November 27, 2015 @ 18:07
37341 bytes	-1 byte	zopfli --i10000 --mls32 --bsr6 --lazy --ohh	October 14, 2015 @ 03:35
37342 bytes	-1 byte	zopfli --i10000 --mls8192 --bsr16 --lazy --ohh	September 9, 2015 @ 18:19
37343 bytes	-2 bytes	zopfli --i10000 --mls4096 --bsr8 --lazy --ohh	September 9, 2015 @ 18:04
37345 bytes	-1 byte	zopfli --i10000 --mls512 --bsr13 --lazy --ohh	September 9, 2015 @ 17:48
37346 bytes	-5 bytes	zopfli --i1000 --mls512 --bsr13 --lazy --ohh	September 7, 2015 @ 20:10
37351 bytes	–	zopfli --i100 --mls8192 --bsr12 --lazy --ohh	September 7, 2015 @ 16:55

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 @ 12:55.

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	37347	37345	37345	37346	37347	37346	37350	37351	37354	37354	37354	37357	37356	37351	37344
4	37349	37348	37354	37351	37355	37349	37356	37348	37357	37352	37348	37347	37352	37351	37355
6	37345	37345	37348	37342	37338	37342	37345	37348	37350	37347	37348	37347	37347	37345	37345
7	37346	37346	37346	37345	37351	37345	37347	37348	37347	37347	37353	37350	37344	37343	37342
8	37349	37345	37355	37351	37347	37352	37348	37347	37352	37349	37347	37343	37344	37346	37344
9	37350	37350	37362	37363	37359	37354	37352	37349	37368	37359	37353	37351	37348	37344	37353
10	37350	37348	37356	37359	37349	37350	37362	37348	37350	37347	37370	37348	37344	37347	37343
11	37346	37346	37344	37345	37364	37363	37351	37349	37348	37348	37370	37353	37344	37343	37343
12	37350	37350	37350	37350	37350	37347	37346	37348	37346	37352	37346	37349	37345	37344	37349
13	37346	37347	37349	37349	37348	37346	37347	37344	37345	37346	37348	37350	37345	37343	37346
14	37348	37356	37353	37345	37355	37347	37345	37348	37350	37354	37346	37344	37345	37343	37343
15	37348	37351	37353	37362	37364	37362	37349	37349	37347	37354	37345	37345	37344	37343	37353
16	37349	37352	37355	37361	37349	37349	37352	37371	37367	37365	37353	37354	37342	37344	37353
17	37348	37346	37346	37346	37350	37354	37368	37367	37371	37358	37371	37360	37344	37346	37349
18	37346	37345	37345	37345	37346	37345	37346	37347	37352	37349	37345	37343	37344	37346	37343
19	37345	37346	37346	37346	37346	37346	37345	37349	37348	37347	37346	37345	37344	37343	37346
20	37345	37346	37346	37345	37347	37346	37346	37346	37352	37348	37347	37350	37344	37345	37343
21	37346	37346	37346	37346	37348	37345	37346	37347	37345	37352	37346	37345	37342	37343	37345
22	37348	37353	37351	37358	37364	37348	37374	37349	37346	37349	37345	37344	37346	37343	37356
23	37346	37344	37357	37361	37356	37356	37351	37348	37346	37348	37348	37343	37349	37347	37343
25	37351	37347	37345	37346	37346	37347	37348	37345	37345	37347	37347	37343	37344	37343	37345
30	37346	37347	37357	37357	37349	37345	37348	37368	37347	37349	37347	37344	37348	37344	37347
40	37351	37345	37346	37346	37346	37346	37348	37344	37350	37347	37346	37344	37344	37343	37347

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	37349 bytes	–	100%
1,000	37344 bytes	-5 bytes	100%
10,000	37341 bytes	-3 bytes	100%
100,000	37338 bytes	-3 bytes	0.29%
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)	37427 bytes	+89 bytes (+0.24%)	–
1	37428 bytes	+90 bytes (+0.24%)	+1 byte
2	37458 bytes	+120 bytes (+0.32%)	+31 bytes
3	37485 bytes	+147 bytes (+0.39%)	+58 bytes
4	37520 bytes	+182 bytes (+0.49%)	+93 bytes
5	37479 bytes	+141 bytes (+0.38%)	+52 bytes
6	37465 bytes	+127 bytes (+0.34%)	+38 bytes
7	37490 bytes	+152 bytes (+0.41%)	+63 bytes
8	37524 bytes	+186 bytes (+0.50%)	+97 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	30283 bytes	-7055 bytes (-18.89%)
RAR (proprietary)	RAR	rar a -m5 -md64m -mc63:128t -mt1	31501 bytes	-5837 bytes (-15.63%)
PPMd (Wikipedia)	7zip	7za a -mx=9 -m0=ppmd	32876 bytes	-4462 bytes (-11.95%)
Brotli (Wikipedia)	brotli	brotli -q 11	34280 bytes	-3058 bytes (-8.19%)
Burrows-Wheeler transform (Wikipedia)	bzip2	bzip2 -9	35272 bytes	-2066 bytes (-5.53%)
LZMA2 (Wikipedia)	xz	xz -9	35720 bytes	-1618 bytes (-4.33%)
Zstandard (Wikipedia)	zstd	zstd -19	36626 bytes	-712 bytes (-1.91%)

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.