AngularJS 0.9.14 - as small as it gets (near-perfect GZIP compression)

Choose a version:

The original file has 327079 bytes (319.4k) and is available from the project website.
There you can find the official minified version, too, which brings down the size to 61081 bytes (59.6k, 19%).

After GZIP compression these minified files vary in size:

Boot	27610 bytes (27.0k)	CDN
Baidu	24894 bytes (24.3k)	CDN
cdnjs	24829 bytes (24.2k)	CDN
gzip -6 (default)	24706 bytes (24.1k)	local copy
gzip -9	24653 bytes (24.1k)	local copy
libdeflate -12	24068 bytes (23.5k)	local copy
7zip -mx=9 -tgzip	23806 bytes (23.2k)	local copy
kzip -s0 -rn -b4	23675 bytes (23.1k)	local copy
zultra	23669 bytes (23.1k)	local copy
pigz -11 -n	23640 bytes (23.1k)	local copy
Zopfli	23615 bytes (23.1k)	local copy

perma-link to the smallest file on my server:
http://minime.stephan-brumme.com/files/angularjs/angular-0.9.14.min.js (or via HTTPS)

You will automatically get the smallest AngularJS 0.9.14 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 1214 bytes by using my AngularJS 0.9.14 Zopfli version instead of the best available CDN (5.14% smaller than cdnjs, 23615 vs. 24829 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 --bsr18 --lazy --ohh

(found February 8, 2016)

Description	Value	Parameter
iterations	100000	--i100000
maximum blocks	8	--mb8
maximum length score	32	--mls32
block splitting recursion	18	--bsr18
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/0.9.14/angular-0.9.14.min.js --location | md5sum
39633fed7b6670f611a02505144f96d9 -
curl --silent --compressed https://minime.stephan-brumme.com/files/angularjs/angular-0.9.14.min.zopfli.js.gz | md5sum
39633fed7b6670f611a02505144f96d9 -

SHA1:
curl --silent --compressed https://code.angularjs.org/0.9.14/angular-0.9.14.min.js --location | sha1sum
43471bf671a01c6ad56f211bb41e64ff8aa62d0c -
curl --silent --compressed https://minime.stephan-brumme.com/files/angularjs/angular-0.9.14.min.zopfli.js.gz | sha1sum
43471bf671a01c6ad56f211bb41e64ff8aa62d0c -

These CDNs send you the original file:

CDN	Size (compressed)	MD5 (uncompressed)	Timestamp
Boot	27610 bytes	39633fed7b6670f611a02505144f96d9	March 18, 2015 @ 10:03
cdnjs	24829 bytes	39633fed7b6670f611a02505144f96d9	March 28, 2014 @ 14:15

And some CDNs send you a different file:

CDN	Size (compressed)	MD5 (uncompressed)	Comment / Diff	Timestamp
Baidu	24894 bytes	2b17d50fc48ca728687e7a3f04afdacf	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
23615 bytes	-1 byte	zopfli --i100000 --mls32 --bsr18 --lazy --ohh	February 8, 2016 @ 15:23
23616 bytes	-2 bytes	zopfli --i10000 --mls16 --bsr6 --lazy --ohh	November 26, 2015 @ 11:21
23618 bytes	-1 byte	zopfli --i1000 --mls16 --bsr6 --lazy --ohh	September 20, 2015 @ 18:14
23619 bytes	-1 byte	zopfli --i1000 --mls256 --bsr7 --lazy --ohh	September 17, 2015 @ 02:48
23620 bytes	-3 bytes	zopfli --i1000 --mls2048 --bsr9 --lazy --ohh	September 7, 2015 @ 22:13
23623 bytes	–	zopfli --i100 --mls512 --bsr10 --lazy --ohh	September 7, 2015 @ 16:31

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 @ 12:47.

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	23647	23647	23647	23649	23645	23639	23636	23636	23644	23668	23667	23655	23657	23649	23651
4	23620	23620	23620	23618	23620	23619	23622	23619	23639	23624	23635	23622	23626	23626	23647
6	23624	23625	23620	23616	23622	23629	23629	23647	23634	23625	23621	23619	23642	23641	23645
7	23627	23620	23619	23627	23627	23625	23626	23616	23624	23624	23620	23629	23637	23627	23637
8	23618	23619	23618	23618	23617	23618	23622	23629	23632	23622	23624	23621	23635	23626	23647
9	23619	23622	23620	23618	23621	23618	23623	23619	23621	23626	23620	23623	23635	23627	23647
10	23620	23620	23618	23616	23616	23619	23619	23616	23619	23622	23620	23622	23618	23626	23646
11	23620	23632	23618	23618	23630	23618	23630	23633	23620	23644	23643	23619	23634	23627	23647
12	23618	23619	23619	23619	23620	23619	23623	23618	23624	23624	23621	23626	23636	23627	23633
13	23618	23619	23619	23619	23618	23619	23622	23622	23625	23627	23627	23620	23636	23626	23650
14	23620	23626	23618	23618	23616	23619	23618	23618	23621	23632	23620	23632	23628	23626	23639
15	23618	23628	23619	23626	23627	23625	23620	23621	23624	23626	23624	23624	23635	23626	23635
16	23630	23633	23636	23616	23619	23630	23628	23621	23624	23624	23621	23625	23637	23626	23638
17	23620	23618	23618	23616	23619	23618	23620	23632	23616	23633	23624	23631	23620	23626	23648
18	23618	23618	23620	23618	23615	23619	23619	23618	23623	23624	23623	23620	23636	23626	23638
19	23629	23620	23618	23619	23619	23619	23620	23630	23626	23624	23624	23621	23621	23627	23648
20	23619	23622	23617	23616	23621	23620	23620	23616	23621	23625	23630	23631	23638	23628	23641
21	23618	23618	23616	23618	23619	23619	23622	23619	23624	23627	23624	23623	23634	23626	23650
22	23619	23627	23618	23618	23616	23619	23622	23622	23622	23625	23619	23626	23639	23633	23641
23	23621	23619	23618	23618	23619	23622	23624	23616	23622	23621	23618	23620	23635	23627	23641
25	23618	23619	23618	23618	23619	23619	23621	23622	23629	23625	23621	23619	23633	23626	23649
30	23618	23618	23618	23617	23619	23619	23619	23619	23622	23625	23620	23621	23633	23626	23636
40	23618	23619	23619	23617	23619	23619	23619	23619	23622	23624	23621	23620	23640	23627	23648

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	23622 bytes	–	100%
1,000	23618 bytes	-4 bytes	100%
10,000	23616 bytes	-2 bytes	100%
100,000	23615 bytes	-1 byte	5.51%
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)	23703 bytes	+88 bytes (+0.37%)	+28 bytes
1	24146 bytes	+531 bytes (+2.25%)	+471 bytes
2	23703 bytes	+88 bytes (+0.37%)	+28 bytes
3	23721 bytes	+106 bytes (+0.45%)	+46 bytes
4	23675 bytes	+60 bytes (+0.25%)	–
5	23702 bytes	+87 bytes (+0.37%)	+27 bytes
6	23736 bytes	+121 bytes (+0.51%)	+61 bytes
7	23753 bytes	+138 bytes (+0.58%)	+78 bytes
8	23776 bytes	+161 bytes (+0.68%)	+101 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	20707 bytes	-2908 bytes (-12.31%)
RAR (proprietary)	RAR	rar a -m5 -md64m -mc63:128t -mt1	21066 bytes	-2549 bytes (-10.79%)
Brotli (Wikipedia)	brotli	brotli -q 11	21931 bytes	-1684 bytes (-7.13%)
PPMd (Wikipedia)	7zip	7za a -mx=9 -m0=ppmd	22182 bytes	-1433 bytes (-6.07%)
LZMA2 (Wikipedia)	xz	xz -9	23200 bytes	-415 bytes (-1.76%)
Burrows-Wheeler transform (Wikipedia)	bzip2	bzip2 -9	23604 bytes	-11 bytes (-0.05%)
Zstandard (Wikipedia)	zstd	zstd -19	23876 bytes	+261 bytes (+1.11%)

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.