AngularJS 1.7.7 - as small as it gets (near-perfect GZIP compression)

Choose a version:

The original file has 1371804 bytes (1,339.7k) and is available from the project website.
There you can find the official minified version, too, which brings down the size to 176200 bytes (172.1k, 13%).

After GZIP compression these minified files vary in size:

unpkg	72955 bytes (71.2k)	CDN
Boot	62116 bytes (60.7k)	CDN
cdnjs	62116 bytes (60.7k)	CDN
Google	61975 bytes (60.5k)	CDN
gzip -6 (default)	61648 bytes (60.2k)	local copy
gzip -9	61496 bytes (60.1k)	local copy
libdeflate -12	59668 bytes (58.3k)	local copy
7zip -mx=9 -tgzip	59634 bytes (58.2k)	local copy
kzip -s0 -rn -b8	59603 bytes (58.2k)	local copy
zultra	59586 bytes (58.2k)	local copy
pigz -11 -n	59536 bytes (58.1k)	local copy
Zopfli	59477 bytes (58.1k)	local copy

perma-link to the smallest file on my server:
http://minime.stephan-brumme.com/files/angularjs/angular-1.7.7.min.js (or via HTTPS)

You will automatically get the smallest AngularJS 1.7.7 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 2498 bytes by using my AngularJS 1.7.7 Zopfli version instead of the best available CDN (4.20% smaller than Google, 59477 vs. 61975 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 --bsr25 --lazy --ohh

(found February 9, 2019)

Description	Value	Parameter
iterations	1000000	--i1000000
maximum blocks	8	--mb8
maximum length score	512	--mls512
block splitting recursion	25	--bsr25
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/1.7.7/angular.min.js --location | md5sum
21da20ee83a7958c8af0051be0c979f4 -
curl --silent --compressed https://minime.stephan-brumme.com/files/angularjs/angular-1.7.7.min.zopfli.js.gz | md5sum
21da20ee83a7958c8af0051be0c979f4 -

SHA1:
curl --silent --compressed https://code.angularjs.org/1.7.7/angular.min.js --location | sha1sum
d1f3d7889f2673523c3cd00f3f9012684f2367e5 -
curl --silent --compressed https://minime.stephan-brumme.com/files/angularjs/angular-1.7.7.min.zopfli.js.gz | sha1sum
d1f3d7889f2673523c3cd00f3f9012684f2367e5 -

All listed CDNs deliver identical contents:

CDN	Size (compressed)	MD5 (uncompressed)	Timestamp
unpkg	72955 bytes	21da20ee83a7958c8af0051be0c979f4	(invalid)
Boot	62116 bytes	21da20ee83a7958c8af0051be0c979f4	February 7, 2019 @ 10:15
cdnjs	62116 bytes	21da20ee83a7958c8af0051be0c979f4	February 7, 2019 @ 10:15
Google	61975 bytes	21da20ee83a7958c8af0051be0c979f4	February 11, 2019 @ 20:15

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
59477 bytes	-1 byte	zopfli --i1000000 --mls512 --bsr25 --lazy --ohh	February 9, 2019 @ 19:38
59478 bytes	-1 byte	zopfli --i1000000 --mls512 --bsr23 --lazy --ohh	February 9, 2019 @ 19:06
59479 bytes	-5 bytes	zopfli --i100000 --mls512 --bsr23 --lazy --ohh	February 8, 2019 @ 13:52
59484 bytes	-1 byte	zopfli --i10000 --mls512 --bsr23 --lazy --ohh	February 7, 2019 @ 16:57
59485 bytes	-4 bytes	zopfli --i10000 --mls8192 --bsr17 --lazy --ohh	February 7, 2019 @ 14:37
59489 bytes	-1 byte	zopfli --i1000 --mls512 --bsr21 --lazy --ohh	February 7, 2019 @ 11:15
59490 bytes	-1 byte	zopfli --i1000 --mls512 --bsr25 --lazy --ohh	February 7, 2019 @ 11:11
59491 bytes	-12 bytes	zopfli --i1000 --mls512 --bsr10 --lazy --ohh	February 7, 2019 @ 11:09
59503 bytes	–	zopfli --i100 --mls1024 --bsr23 --lazy --ohh	February 7, 2019 @ 10:59

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 @ 12:50.

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	59546	59549	59556	59564	59530	59522	59551	59559	59524	59512	59650	59650	59649	59650	59558
4	59549	59548	59551	59549	59531	59541	59523	59525	59505	59511	59519	59518	59517	59532	59518
6	59546	59550	59550	59551	59549	59521	59551	59512	59505	59516	59520	59506	59520	59517	59518
7	59535	59540	59540	59538	59534	59562	59522	59513	59505	59517	59514	59504	59521	59516	59517
8	59548	59539	59542	59536	59540	59541	59544	59493	59510	59509	59517	59514	59505	59519	59531
9	59550	59550	59553	59550	59533	59539	59521	59521	59505	59507	59494	59506	59515	59511	59535
10	59548	59521	59520	59520	59520	59522	59507	59492	59482	59488	59494	59489	59516	59506	59517
11	59520	59521	59519	59520	59515	59520	59501	59492	59480	59488	59493	59499	59497	59516	59519
12	59550	59550	59552	59550	59517	59504	59492	59493	59486	59490	59494	59489	59517	59521	59542
13	59519	59519	59517	59520	59517	59514	59506	59491	59498	59490	59488	59487	59516	59489	59542
14	59517	59518	59522	59522	59516	59517	59493	59495	59490	59487	59501	59488	59502	59493	59498
15	59518	59524	59516	59518	59515	59516	59504	59492	59486	59487	59495	59494	59497	59491	59500
16	59520	59520	59519	59529	59511	59523	59498	59501	59501	59488	59501	59489	59497	59488	59500
17	59521	59518	59518	59524	59516	59521	59490	59492	59491	59488	59493	59495	59481	59491	59499
18	59518	59515	59518	59522	59517	59520	59502	59499	59481	59487	59494	59486	59497	59491	59490
19	59515	59517	59517	59520	59516	59524	59550	59498	59486	59487	59486	59487	59517	59486	59529
20	59517	59516	59538	59518	59533	59521	59500	59500	59501	59487	59502	59487	59517	59491	59518
21	59517	59518	59518	59521	59516	59518	59505	59491	59481	59489	59490	59487	59516	59504	59518
22	59517	59518	59518	59519	59516	59520	59502	59500	59498	59488	59498	59487	59515	59507	59518
23	59520	59516	59517	59519	59515	59520	59501	59494	59478	59488	59491	59486	59518	59490	59517
25	59518	59518	59516	59520	59515	59522	59500	59501	59477	59488	59491	59486	59516	59516	59518
30	59516	59518	59519	59521	59516	59521	59503	59492	59487	59498	59491	59488	59498	59500	59488
40	59519	59517	59523	59523	59532	59526	59524	59492	59486	59492	59501	59517	59496	59499	59489

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	59503 bytes	–	100%
1,000	59489 bytes	-14 bytes	100%
10,000	59484 bytes	-5 bytes	100%
100,000	59479 bytes	-5 bytes	2.03%
1,000,000	59477 bytes	-2 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)	59658 bytes	+181 bytes (+0.30%)	+55 bytes
1	59656 bytes	+179 bytes (+0.30%)	+53 bytes
2	59639 bytes	+162 bytes (+0.27%)	+36 bytes
3	59651 bytes	+174 bytes (+0.29%)	+48 bytes
4	59679 bytes	+202 bytes (+0.34%)	+76 bytes
5	59668 bytes	+191 bytes (+0.32%)	+65 bytes
6	59656 bytes	+179 bytes (+0.30%)	+53 bytes
7	59676 bytes	+199 bytes (+0.33%)	+73 bytes
8	59603 bytes	+126 bytes (+0.21%)	–

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	45821 bytes	-13656 bytes (-22.96%)
RAR (proprietary)	RAR	rar a -m5 -md64m -mc63:128t -mt1	48437 bytes	-11040 bytes (-18.56%)
PPMd (Wikipedia)	7zip	7za a -mx=9 -m0=ppmd	50291 bytes	-9186 bytes (-15.44%)
Brotli (Wikipedia)	brotli	brotli -q 11	53907 bytes	-5570 bytes (-9.36%)
Burrows-Wheeler transform (Wikipedia)	bzip2	bzip2 -9	54624 bytes	-4853 bytes (-8.16%)
LZMA2 (Wikipedia)	xz	xz -9	55540 bytes	-3937 bytes (-6.62%)
Zstandard (Wikipedia)	zstd	zstd -19	56881 bytes	-2596 bytes (-4.36%)

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.