AngularJS 1.3.13 - as small as it gets (near-perfect GZIP compression)

Choose a version:

The original file has 952661 bytes (930.3k) and is available from the project website.
There you can find the official minified version, too, which brings down the size to 125539 bytes (122.6k, 13%).

After GZIP compression these minified files vary in size:

Boot	52863 bytes (51.6k)	CDN
Baidu	46566 bytes (45.5k)	CDN
cdnjs	46431 bytes (45.3k)	CDN
unpkg	46144 bytes (45.1k)	CDN
gzip -6 (default)	46115 bytes (45.0k)	local copy
Google	46066 bytes (45.0k)	CDN
Yandex	46026 bytes (44.9k)	CDN
gzip -9	46021 bytes (44.9k)	local copy
7zip -mx=9 -tgzip	44661 bytes (43.6k)	local copy
kzip -s0 -rn -b1	44618 bytes (43.6k)	local copy
libdeflate -12	44604 bytes (43.6k)	local copy
zultra	44593 bytes (43.5k)	local copy
pigz -11 -n	44558 bytes (43.5k)	local copy
Zopfli	44523 bytes (43.5k)	local copy

perma-link to the smallest file on my server:
http://minime.stephan-brumme.com/files/angularjs/angular-1.3.13.min.js (or via HTTPS)

You will automatically get the smallest AngularJS 1.3.13 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 1503 bytes by using my AngularJS 1.3.13 Zopfli version instead of the best available CDN (3.38% smaller than Yandex, 44523 vs. 46026 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 --mls16384 --bsr6 --lazy --ohh

(found November 30, 2015)

Description	Value	Parameter
iterations	100000	--i100000
maximum blocks	8	--mb8
maximum length score	16384	--mls16384
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/1.3.13/angular.min.js --location | md5sum
4a031ce4bccd9c5c405b40567255bbe4 -
curl --silent --compressed https://minime.stephan-brumme.com/files/angularjs/angular-1.3.13.min.zopfli.js.gz | md5sum
4a031ce4bccd9c5c405b40567255bbe4 -

SHA1:
curl --silent --compressed https://code.angularjs.org/1.3.13/angular.min.js --location | sha1sum
09028d3553206017f5ced7249be5641baaea2020 -
curl --silent --compressed https://minime.stephan-brumme.com/files/angularjs/angular-1.3.13.min.zopfli.js.gz | sha1sum
09028d3553206017f5ced7249be5641baaea2020 -

These CDNs send you the original file:

CDN	Size (compressed)	MD5 (uncompressed)	Timestamp
Boot	52863 bytes	4a031ce4bccd9c5c405b40567255bbe4	March 18, 2015 @ 11:00
cdnjs	46431 bytes	4a031ce4bccd9c5c405b40567255bbe4	February 9, 2015 @ 15:00
unpkg	46144 bytes	4a031ce4bccd9c5c405b40567255bbe4	July 11, 2016 @ 15:53
Google	46066 bytes	4a031ce4bccd9c5c405b40567255bbe4	February 9, 2015 @ 20:28
Yandex	46026 bytes	4a031ce4bccd9c5c405b40567255bbe4	June 11, 2015 @ 14:17

And some CDNs send you a different file:

CDN	Size (compressed)	MD5 (uncompressed)	Comment / Diff	Timestamp
Baidu	46566 bytes	fc49e82a89a7d42286915780e94472ac	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
44523 bytes	-1 byte	zopfli --i100000 --mls16384 --bsr6 --lazy --ohh	November 30, 2015 @ 14:14
44524 bytes	-1 byte	zopfli --i10000 --mls16384 --bsr6 --lazy --ohh	October 13, 2015 @ 21:00
44525 bytes	-1 byte	zopfli --i1000 --mls16384 --bsr6 --lazy --ohh	September 12, 2015 @ 11:25
44526 bytes	-6 bytes	zopfli --i1000 --mls2048 --bsr12 --lazy --ohh	September 7, 2015 @ 18:35
44532 bytes	-2 bytes	zopfli --i1000 --mls2048 --bsr13 --lazy --ohh	September 7, 2015 @ 18:35
44534 bytes	–	zopfli --i100 --mls2048 --bsr12 --lazy --ohh	September 7, 2015 @ 16:23

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	44560	44558	44548	44559	44560	44559	44549	44565	44547	44550	44556	44551	44548	44548	44559
4	44557	44559	44558	44552	44550	44549	44549	44548	44545	44559	44539	44549	44539	44532	44572
6	44557	44548	44548	44557	44558	44556	44529	44542	44533	44535	44532	44537	44539	44523	44548
7	44556	44543	44550	44557	44539	44547	44541	44548	44546	44537	44542	44542	44543	44530	44565
8	44540	44547	44566	44557	44548	44559	44537	44535	44554	44536	44531	44538	44536	44535	44553
9	44545	44553	44555	44547	44557	44557	44529	44536	44549	44537	44535	44532	44526	44526	44552
10	44529	44547	44544	44548	44550	44547	44532	44539	44553	44535	44532	44532	44551	44533	44552
11	44562	44548	44544	44545	44542	44543	44543	44536	44547	44534	44535	44532	44539	44532	44563
12	44561	44547	44546	44557	44555	44544	44535	44536	44553	44538	44526	44535	44540	44532	44550
13	44546	44548	44548	44549	44555	44557	44535	44538	44553	44538	44532	44535	44538	44532	44549
14	44540	44547	44547	44546	44557	44557	44531	44534	44553	44535	44532	44532	44527	44531	44560
15	44557	44546	44547	44557	44546	44557	44543	44541	44551	44539	44532	44532	44546	44530	44547
16	44543	44542	44555	44551	44545	44544	44540	44539	44536	44532	44535	44537	44544	44528	44547
17	44540	44545	44541	44557	44556	44557	44543	44536	44536	44535	44532	44532	44542	44532	44551
18	44557	44548	44546	44544	44547	44558	44544	44545	44536	44535	44532	44532	44541	44533	44548
19	44545	44557	44546	44549	44547	44544	44535	44535	44551	44535	44535	44532	44540	44532	44550
20	44546	44547	44547	44549	44554	44546	44555	44536	44553	44535	44535	44542	44538	44528	44562
21	44539	44547	44563	44553	44543	44544	44535	44536	44553	44535	44549	44532	44539	44528	44546
22	44544	44555	44555	44538	44546	44535	44543	44538	44537	44535	44535	44536	44535	44529	44561
23	44539	44557	44559	44550	44556	44548	44531	44537	44551	44535	44535	44532	44538	44530	44561
25	44545	44550	44548	44546	44556	44557	44540	44539	44553	44536	44541	44537	44539	44529	44542
30	44539	44557	44557	44547	44538	44542	44533	44535	44553	44545	44532	44532	44537	44533	44550
40	44557	44546	44557	44557	44556	44546	44535	44538	44531	44538	44535	44532	44538	44530	44549

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	44531 bytes	–	100%
1,000	44525 bytes	-6 bytes	100%
10,000	44524 bytes	-1 byte	100%
100,000	44523 bytes	-1 byte	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)	44621 bytes	+98 bytes (+0.22%)	+3 bytes
1	44618 bytes	+95 bytes (+0.21%)	–
2	44648 bytes	+125 bytes (+0.28%)	+30 bytes
3	44678 bytes	+155 bytes (+0.35%)	+60 bytes
4	44692 bytes	+169 bytes (+0.38%)	+74 bytes
5	44732 bytes	+209 bytes (+0.47%)	+114 bytes
6	44719 bytes	+196 bytes (+0.44%)	+101 bytes
7	44726 bytes	+203 bytes (+0.46%)	+108 bytes
8	44755 bytes	+232 bytes (+0.52%)	+137 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	35529 bytes	-8994 bytes (-20.20%)
RAR (proprietary)	RAR	rar a -m5 -md64m -mc63:128t -mt1	37112 bytes	-7411 bytes (-16.65%)
PPMd (Wikipedia)	7zip	7za a -mx=9 -m0=ppmd	38957 bytes	-5566 bytes (-12.50%)
Brotli (Wikipedia)	brotli	brotli -q 11	40911 bytes	-3612 bytes (-8.11%)
Burrows-Wheeler transform (Wikipedia)	bzip2	bzip2 -9	41654 bytes	-2869 bytes (-6.44%)
LZMA2 (Wikipedia)	xz	xz -9	42332 bytes	-2191 bytes (-4.92%)
Zstandard (Wikipedia)	zstd	zstd -19	43458 bytes	-1065 bytes (-2.39%)

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.