AngularJS 1.3.6 - as small as it gets (near-perfect GZIP compression)

Choose a version:

The original file has 947758 bytes (925.5k) and is available from the project website.
There you can find the official minified version, too, which brings down the size to 124980 bytes (122.1k, 13%).

After GZIP compression these minified files vary in size:

Boot	52694 bytes (51.5k)	CDN
Baidu	46362 bytes (45.3k)	CDN
cdnjs	46227 bytes (45.1k)	CDN
unpkg	45917 bytes (44.8k)	CDN
gzip -6 (default)	45908 bytes (44.8k)	local copy
Google	45853 bytes (44.8k)	CDN
Yandex	45824 bytes (44.8k)	CDN
gzip -9	45824 bytes (44.8k)	local copy
7zip -mx=9 -tgzip	44459 bytes (43.4k)	local copy
kzip -s0 -rn -b0	44416 bytes (43.4k)	local copy
zultra	44409 bytes (43.4k)	local copy
libdeflate -12	44392 bytes (43.4k)	local copy
pigz -11 -n	44363 bytes (43.3k)	local copy
Zopfli	44328 bytes (43.3k)	local copy

perma-link to the smallest file on my server:
http://minime.stephan-brumme.com/files/angularjs/angular-1.3.6.min.js (or via HTTPS)

You will automatically get the smallest AngularJS 1.3.6 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 1496 bytes by using my AngularJS 1.3.6 Zopfli version instead of the best available CDN (3.37% smaller than Yandex, 44328 vs. 45824 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 --mls512 --bsr23 --lazy --ohh

(found November 30, 2015)

Description	Value	Parameter
iterations	100000	--i100000
maximum blocks	8	--mb8
maximum length score	512	--mls512
block splitting recursion	23	--bsr23
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/1.3.6/angular.min.js --location | md5sum
fa392f1d76ff2c33fd9dde1aab24eedd -
curl --silent --compressed https://minime.stephan-brumme.com/files/angularjs/angular-1.3.6.min.zopfli.js.gz | md5sum
fa392f1d76ff2c33fd9dde1aab24eedd -

SHA1:
curl --silent --compressed https://code.angularjs.org/1.3.6/angular.min.js --location | sha1sum
134220552dcc830dea581a040bf0a35c79382c16 -
curl --silent --compressed https://minime.stephan-brumme.com/files/angularjs/angular-1.3.6.min.zopfli.js.gz | sha1sum
134220552dcc830dea581a040bf0a35c79382c16 -

These CDNs send you the original file:

CDN	Size (compressed)	MD5 (uncompressed)	Timestamp
Boot	52694 bytes	fa392f1d76ff2c33fd9dde1aab24eedd	March 18, 2015 @ 11:05
cdnjs	46227 bytes	fa392f1d76ff2c33fd9dde1aab24eedd	December 18, 2014 @ 18:00
unpkg	45917 bytes	fa392f1d76ff2c33fd9dde1aab24eedd	July 11, 2016 @ 15:53
Google	45853 bytes	fa392f1d76ff2c33fd9dde1aab24eedd	December 9, 2014 @ 01:59
Yandex	45824 bytes	fa392f1d76ff2c33fd9dde1aab24eedd	June 11, 2015 @ 14:17

And some CDNs send you a different file:

CDN	Size (compressed)	MD5 (uncompressed)	Comment / Diff	Timestamp
Baidu	46362 bytes	7ee661ae9f7b4c32153b7b0597eb6103	only whitespaces differ	April 3, 2015 @ 04:57

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
44328 bytes	-1 byte	zopfli --i100000 --mls512 --bsr23 --lazy --ohh	November 30, 2015 @ 10:15
44329 bytes	-1 byte	zopfli --i10000 --mls512 --bsr13 --lazy --ohh	September 8, 2015 @ 07:35
44330 bytes	-1 byte	zopfli --i10000 --mls512 --bsr12 --lazy --ohh	September 8, 2015 @ 07:25
44331 bytes	-13 bytes	zopfli --i1000 --mls512 --bsr12 --lazy --ohh	September 7, 2015 @ 17:50
44344 bytes	–	zopfli --i100 --mls8192 --bsr14 --lazy --ohh	September 7, 2015 @ 16:19

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	44359	44360	44357	44364	44363	44359	44361	44358	44357	44348	44350	44360	44348	44346	44354
4	44359	44351	44353	44357	44359	44359	44349	44347	44335	44356	44347	44354	44349	44332	44368
6	44347	44340	44338	44341	44340	44340	44340	44339	44337	44336	44333	44330	44334	44332	44347
7	44358	44340	44334	44341	44338	44333	44334	44335	44330	44336	44343	44342	44330	44332	44334
8	44360	44345	44335	44340	44340	44338	44338	44336	44340	44335	44333	44331	44336	44333	44345
9	44366	44338	44355	44358	44340	44341	44339	44334	44336	44335	44333	44332	44334	44333	44371
10	44359	44339	44357	44340	44339	44338	44339	44338	44330	44336	44343	44335	44335	44332	44354
11	44353	44352	44337	44339	44353	44342	44340	44340	44330	44335	44333	44332	44330	44333	44349
12	44348	44340	44341	44339	44337	44332	44337	44334	44330	44336	44332	44332	44330	44328	44346
13	44345	44343	44338	44353	44340	44358	44334	44334	44328	44335	44332	44332	44331	44332	44346
14	44353	44339	44360	44352	44337	44338	44340	44334	44337	44334	44337	44331	44332	44328	44366
15	44348	44345	44334	44340	44334	44332	44333	44334	44330	44337	44332	44336	44332	44332	44339
16	44353	44356	44342	44338	44337	44338	44340	44335	44335	44336	44340	44332	44332	44332	44340
17	44351	44339	44337	44341	44337	44354	44340	44338	44330	44336	44332	44331	44332	44328	44347
18	44349	44366	44335	44354	44352	44356	44344	44355	44330	44335	44333	44332	44331	44332	44347
19	44345	44365	44354	44345	44347	44346	44345	44352	44339	44336	44331	44331	44332	44332	44346
20	44349	44346	44358	44347	44342	44358	44352	44334	44328	44336	44337	44331	44332	44332	44339
21	44349	44339	44337	44342	44337	44338	44340	44334	44339	44341	44335	44330	44331	44332	44345
22	44355	44355	44345	44340	44340	44337	44339	44335	44341	44335	44339	44329	44335	44333	44340
23	44357	44338	44338	44341	44341	44338	44338	44338	44328	44335	44336	44330	44331	44332	44350
25	44348	44352	44364	44346	44344	44353	44338	44334	44330	44335	44333	44333	44332	44332	44347
30	44343	44345	44335	44340	44338	44338	44339	44333	44330	44336	44336	44331	44331	44329	44338
40	44343	44345	44363	44340	44338	44337	44338	44339	44328	44335	44336	44331	44331	44333	44339

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	44344 bytes	–	100%
1,000	44330 bytes	-14 bytes	100%
10,000	44329 bytes	-1 byte	100%
100,000	44328 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)	44416 bytes	+88 bytes (+0.20%)	–
1	44417 bytes	+89 bytes (+0.20%)	+1 byte
2	44430 bytes	+102 bytes (+0.23%)	+14 bytes
3	44467 bytes	+139 bytes (+0.31%)	+51 bytes
4	44479 bytes	+151 bytes (+0.34%)	+63 bytes
5	44500 bytes	+172 bytes (+0.39%)	+84 bytes
6	44489 bytes	+161 bytes (+0.36%)	+73 bytes
7	44506 bytes	+178 bytes (+0.40%)	+90 bytes
8	44527 bytes	+199 bytes (+0.45%)	+111 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	35379 bytes	-8949 bytes (-20.19%)
RAR (proprietary)	RAR	rar a -m5 -md64m -mc63:128t -mt1	37033 bytes	-7295 bytes (-16.46%)
PPMd (Wikipedia)	7zip	7za a -mx=9 -m0=ppmd	38795 bytes	-5533 bytes (-12.48%)
Brotli (Wikipedia)	brotli	brotli -q 11	40706 bytes	-3622 bytes (-8.17%)
Burrows-Wheeler transform (Wikipedia)	bzip2	bzip2 -9	41605 bytes	-2723 bytes (-6.14%)
LZMA2 (Wikipedia)	xz	xz -9	42180 bytes	-2148 bytes (-4.85%)
Zstandard (Wikipedia)	zstd	zstd -19	43303 bytes	-1025 bytes (-2.31%)

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.