AngularJS 1.6.4 - as small as it gets (near-perfect GZIP compression)

Choose a version:

The original file has 1249863 bytes (1,220.6k) and is available from the project website.
There you can find the official minified version, too, which brings down the size to 167131 bytes (163.2k, 13%).

After GZIP compression these minified files vary in size:

Boot	67528 bytes (65.9k)	CDN
cdnjs	58958 bytes (57.6k)	CDN
Google	58814 bytes (57.4k)	CDN
unpkg	58504 bytes (57.1k)	CDN
gzip -6 (default)	58492 bytes (57.1k)	local copy
gzip -9	58367 bytes (57.0k)	local copy
7zip -mx=9 -tgzip	56606 bytes (55.3k)	local copy
kzip -s0 -rn -b2	56598 bytes (55.3k)	local copy
libdeflate -12	56586 bytes (55.3k)	local copy
zultra	56567 bytes (55.2k)	local copy
pigz -11 -n	56489 bytes (55.2k)	local copy
Zopfli	56458 bytes (55.1k)	local copy
Zopfli (defluff)	56457 bytes (55.1k)	local copy

perma-link to the smallest file on my server:
http://minime.stephan-brumme.com/files/angularjs/angular-1.6.4.min.js (or via HTTPS)

You will automatically get the smallest AngularJS 1.6.4 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 2046 bytes by using my AngularJS 1.6.4 Zopfli version instead of the best available CDN (3.62% smaller than unpkg, 56458 vs. 58504 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 --mls256 --bsr20 --lazy --ohh

(found April 4, 2017)

Description	Value	Parameter
iterations	1000000	--i1000000
maximum blocks	8	--mb8
maximum length score	256	--mls256
block splitting recursion	20	--bsr20
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 (56457 bytes).

Download

Verify file integrity

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

MD5:
curl --silent --compressed https://code.angularjs.org/1.6.4/angular.min.js --location | md5sum
be6af23e2a716c006da75d0291784254 -
curl --silent --compressed https://minime.stephan-brumme.com/files/angularjs/angular-1.6.4.min.zopfli.js.gz | md5sum
be6af23e2a716c006da75d0291784254 -

SHA1:
curl --silent --compressed https://code.angularjs.org/1.6.4/angular.min.js --location | sha1sum
9c923313eabc56d715a7c07bf855feb26a72f671 -
curl --silent --compressed https://minime.stephan-brumme.com/files/angularjs/angular-1.6.4.min.zopfli.js.gz | sha1sum
9c923313eabc56d715a7c07bf855feb26a72f671 -

All listed CDNs deliver identical contents:

CDN	Size (compressed)	MD5 (uncompressed)	Timestamp
Boot	67528 bytes	be6af23e2a716c006da75d0291784254	April 1, 2017 @ 19:47
cdnjs	58958 bytes	be6af23e2a716c006da75d0291784254	March 31, 2017 @ 22:33
Google	58814 bytes	be6af23e2a716c006da75d0291784254	April 11, 2017 @ 20:15
unpkg	58504 bytes	be6af23e2a716c006da75d0291784254	April 3, 2017 @ 09:22

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
56458 bytes	-3 bytes	zopfli --i1000000 --mls256 --bsr20 --lazy --ohh	April 4, 2017 @ 01:19
56461 bytes	-3 bytes	zopfli --i100000 --mls256 --bsr12 --lazy --ohh	April 3, 2017 @ 12:27
56464 bytes	-2 bytes	zopfli --i10000 --mls256 --bsr12 --lazy --ohh	April 3, 2017 @ 11:08
56466 bytes	-3 bytes	zopfli --i10000 --mls256 --bsr20 --lazy --ohh	April 3, 2017 @ 11:02
56469 bytes	-3 bytes	zopfli --i1000 --mls256 --bsr20 --lazy --ohh	April 3, 2017 @ 10:56
56472 bytes	-5 bytes	zopfli --i1000 --mls2048 --bsr40 --lazy --ohh	April 3, 2017 @ 10:56
56477 bytes	–	zopfli --i100 --mls256 --bsr12 --lazy --ohh	April 3, 2017 @ 09:24

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 @ 12:43.

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	56528	56528	56528	56532	56511	56520	56513	56520	56521	56521	56513	56501	56493	56510	56524
4	56507	56506	56505	56502	56504	56493	56503	56484	56494	56493	56496	56496	56492	56492	56504
6	56520	56522	56502	56503	56506	56506	56508	56493	56494	56495	56495	56495	56493	56495	56500
7	56504	56509	56508	56507	56506	56506	56505	56491	56494	56502	56502	56495	56492	56491	56502
8	56506	56511	56507	56504	56497	56503	56502	56503	56492	56489	56499	56498	56494	56491	56497
9	56503	56506	56507	56504	56503	56502	56503	56499	56495	56487	56485	56485	56493	56492	56497
10	56513	56481	56504	56504	56479	56504	56482	56472	56471	56478	56464	56485	56492	56495	56504
11	56503	56509	56502	56504	56505	56485	56483	56486	56471	56482	56465	56486	56473	56490	56502
12	56515	56503	56507	56503	56503	56492	56492	56460	56469	56474	56469	56495	56475	56484	56493
13	56504	56506	56502	56503	56481	56479	56484	56475	56472	56474	56470	56485	56472	56486	56497
14	56511	56504	56504	56503	56504	56490	56483	56472	56475	56480	56469	56486	56475	56493	56494
15	56508	56506	56508	56506	56510	56480	56485	56472	56476	56472	56470	56486	56471	56493	56492
16	56504	56511	56508	56504	56506	56481	56485	56478	56477	56479	56463	56487	56477	56488	56493
17	56504	56508	56508	56498	56506	56480	56482	56480	56473	56472	56465	56486	56474	56486	56493
18	56518	56500	56494	56496	56496	56485	56485	56475	56473	56471	56464	56486	56493	56480	56495
19	56494	56508	56502	56495	56495	56496	56490	56475	56473	56476	56469	56486	56490	56493	56491
20	56506	56506	56494	56494	56496	56500	56502	56458	56478	56464	56474	56487	56496	56488	56491
21	56495	56497	56494	56495	56497	56471	56482	56471	56471	56470	56473	56486	56493	56493	56492
22	56499	56498	56494	56494	56497	56489	56481	56477	56473	56462	56470	56485	56493	56490	56493
23	56496	56495	56494	56492	56495	56488	56483	56483	56478	56470	56471	56486	56493	56496	56492
25	56495	56495	56495	56494	56495	56480	56483	56483	56474	56476	56476	56495	56496	56493	56492
30	56493	56494	56495	56495	56494	56492	56464	56473	56475	56472	56476	56495	56471	56478	56475
40	56494	56494	56496	56494	56492	56480	56496	56474	56475	56472	56464	56472	56472	56493	56478

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	56477 bytes	–	100%
1,000	56469 bytes	-8 bytes	100%
10,000	56464 bytes	-5 bytes	100%
100,000	56461 bytes	-3 bytes	3.19%
1,000,000	56458 bytes	-3 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)	56600 bytes	+142 bytes (+0.25%)	+2 bytes
1	56599 bytes	+141 bytes (+0.25%)	+1 byte
2	56598 bytes	+140 bytes (+0.25%)	–
3	56605 bytes	+147 bytes (+0.26%)	+7 bytes
4	56621 bytes	+163 bytes (+0.29%)	+23 bytes
5	56617 bytes	+159 bytes (+0.28%)	+19 bytes
6	56619 bytes	+161 bytes (+0.29%)	+21 bytes
7	56647 bytes	+189 bytes (+0.33%)	+49 bytes
8	56648 bytes	+190 bytes (+0.34%)	+50 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	43556 bytes	-12902 bytes (-22.85%)
RAR (proprietary)	RAR	rar a -m5 -md64m -mc63:128t -mt1	46086 bytes	-10372 bytes (-18.37%)
PPMd (Wikipedia)	7zip	7za a -mx=9 -m0=ppmd	47756 bytes	-8702 bytes (-15.41%)
Brotli (Wikipedia)	brotli	brotli -q 11	51154 bytes	-5304 bytes (-9.39%)
Burrows-Wheeler transform (Wikipedia)	bzip2	bzip2 -9	51984 bytes	-4474 bytes (-7.92%)
LZMA2 (Wikipedia)	xz	xz -9	52724 bytes	-3734 bytes (-6.61%)
Zstandard (Wikipedia)	zstd	zstd -19	54279 bytes	-2179 bytes (-3.86%)

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.