AngularJS 1.2.6 - as small as it gets (near-perfect GZIP compression)

Choose a version:

The original file has 724155 bytes (707.2k) and is available from the project website.
There you can find the official minified version, too, which brings down the size to 100023 bytes (97.7k, 14%).

After GZIP compression these minified files vary in size:

Boot	42102 bytes (41.1k)	CDN
Baidu	37142 bytes (36.3k)	CDN
cdnjs	37023 bytes (36.2k)	CDN
gzip -6 (default)	36805 bytes (35.9k)	local copy
Google	36749 bytes (35.9k)	CDN
gzip -9	36748 bytes (35.9k)	local copy
Yandex	36744 bytes (35.9k)	CDN
jsdelivr	36744 bytes (35.9k)	CDN
libdeflate -12	35645 bytes (34.8k)	local copy
7zip -mx=9 -tgzip	35633 bytes (34.8k)	local copy
zultra	35618 bytes (34.8k)	local copy
kzip -s0 -rn -b1	35617 bytes (34.8k)	local copy
pigz -11 -n	35566 bytes (34.7k)	local copy
Zopfli	35545 bytes (34.7k)	local copy
Zopfli (defluff)	35543 bytes (34.7k)	local copy

perma-link to the smallest file on my server:
http://minime.stephan-brumme.com/files/angularjs/angular-1.2.6.min.js (or via HTTPS)

You will automatically get the smallest AngularJS 1.2.6 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 1199 bytes by using my AngularJS 1.2.6 Zopfli version instead of the best available CDN (3.37% smaller than jsdelivr, 35545 vs. 36744 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 --bsr10 --lazy --ohh

(found November 26, 2015)

Description	Value	Parameter
iterations	100000	--i100000
maximum blocks	8	--mb8
maximum length score	512	--mls512
block splitting recursion	10	--bsr10
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 2 more bytes (35543 bytes).

Download

Verify file integrity

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

MD5:
curl --silent --compressed https://code.angularjs.org/1.2.6/angular.min.js --location | md5sum
18af59e646a32d042fb4fde57bb2f175 -
curl --silent --compressed https://minime.stephan-brumme.com/files/angularjs/angular-1.2.6.min.zopfli.js.gz | md5sum
18af59e646a32d042fb4fde57bb2f175 -

SHA1:
curl --silent --compressed https://code.angularjs.org/1.2.6/angular.min.js --location | sha1sum
9076e9995a0bd8bffd5e7f8f1064e8d0bff15cf6 -
curl --silent --compressed https://minime.stephan-brumme.com/files/angularjs/angular-1.2.6.min.zopfli.js.gz | sha1sum
9076e9995a0bd8bffd5e7f8f1064e8d0bff15cf6 -

These CDNs send you the original file:

CDN	Size (compressed)	MD5 (uncompressed)	Timestamp
Boot	42102 bytes	18af59e646a32d042fb4fde57bb2f175	March 18, 2015 @ 10:38
cdnjs	37023 bytes	18af59e646a32d042fb4fde57bb2f175	March 28, 2014 @ 15:15
Google	36749 bytes	18af59e646a32d042fb4fde57bb2f175	(invalid)
Yandex	36744 bytes	18af59e646a32d042fb4fde57bb2f175	June 11, 2015 @ 14:17
jsdelivr	36744 bytes	18af59e646a32d042fb4fde57bb2f175	August 7, 2014 @ 18:32

And some CDNs send you a different file:

CDN	Size (compressed)	MD5 (uncompressed)	Comment / Diff	Timestamp
Baidu	37142 bytes	c5c7e8c303a9d1eed6213522a8250415	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
35545 bytes	-1 byte	zopfli --i100000 --mls512 --bsr10 --lazy --ohh	November 26, 2015 @ 19:22
35546 bytes	-4 bytes	zopfli --i10000 --mls512 --bsr10 --lazy --ohh	September 9, 2015 @ 23:37
35550 bytes	-3 bytes	zopfli --i1000 --mls512 --bsr10 --lazy --ohh	September 7, 2015 @ 19:09
35553 bytes	–	zopfli --i100 --mls8192 --bsr16 --lazy --ohh	September 7, 2015 @ 16:33

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	35553	35554	35554	35554	35554	35555	35555	35557	35563	35553	35552	35559	35561	35568	35555
4	35559	35558	35557	35560	35555	35551	35551	35558	35557	35555	35554	35553	35561	35567	35560
6	35562	35562	35562	35564	35562	35562	35560	35558	35558	35558	35563	35558	35555	35558	35563
7	35556	35558	35558	35559	35559	35558	35556	35566	35556	35557	35554	35559	35554	35556	35560
8	35556	35556	35557	35559	35558	35559	35558	35559	35558	35554	35554	35559	35554	35551	35555
9	35556	35556	35557	35560	35555	35559	35558	35566	35558	35554	35555	35563	35562	35558	35555
10	35556	35558	35556	35559	35559	35559	35558	35558	35545	35554	35554	35564	35554	35553	35558
11	35561	35560	35555	35557	35559	35562	35559	35566	35557	35556	35555	35559	35555	35557	35555
12	35557	35562	35559	35559	35559	35558	35560	35559	35556	35553	35555	35554	35555	35558	35560
13	35561	35561	35555	35561	35559	35559	35558	35560	35558	35558	35553	35559	35552	35551	35554
14	35562	35560	35557	35560	35558	35559	35557	35567	35569	35553	35570	35558	35556	35559	35554
15	35561	35563	35559	35561	35559	35559	35556	35560	35558	35556	35555	35558	35551	35550	35559
16	35555	35556	35557	35558	35558	35558	35557	35567	35558	35553	35555	35558	35551	35557	35560
17	35558	35560	35556	35561	35559	35559	35558	35559	35558	35555	35555	35554	35554	35557	35559
18	35555	35561	35556	35560	35556	35559	35558	35559	35557	35558	35555	35550	35563	35578	35559
19	35558	35559	35558	35559	35555	35559	35558	35557	35558	35554	35555	35559	35561	35567	35560
20	35556	35560	35561	35561	35560	35561	35558	35560	35558	35554	35555	35558	35562	35552	35555
21	35557	35558	35556	35559	35559	35560	35557	35558	35557	35553	35565	35559	35555	35557	35560
22	35560	35557	35556	35559	35558	35555	35557	35559	35556	35558	35554	35558	35562	35559	35554
23	35562	35559	35558	35560	35559	35563	35560	35559	35558	35556	35553	35557	35561	35557	35554
25	35559	35562	35560	35558	35558	35556	35562	35566	35564	35557	35554	35559	35556	35558	35555
30	35561	35559	35556	35560	35560	35563	35556	35559	35565	35557	35555	35561	35556	35551	35555
40	35559	35558	35557	35560	35559	35557	35558	35567	35570	35556	35555	35559	35562	35555	35555

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	35553 bytes	–	100%
1,000	35550 bytes	-3 bytes	100%
10,000	35546 bytes	-4 bytes	100%
100,000	35545 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)	35619 bytes	+74 bytes (+0.21%)	+2 bytes
1	35617 bytes	+72 bytes (+0.20%)	–
2	35643 bytes	+98 bytes (+0.28%)	+26 bytes
3	35674 bytes	+129 bytes (+0.36%)	+57 bytes
4	35708 bytes	+163 bytes (+0.46%)	+91 bytes
5	35674 bytes	+129 bytes (+0.36%)	+57 bytes
6	35690 bytes	+145 bytes (+0.41%)	+73 bytes
7	35702 bytes	+157 bytes (+0.44%)	+85 bytes
8	35725 bytes	+180 bytes (+0.51%)	+108 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	28951 bytes	-6594 bytes (-18.55%)
RAR (proprietary)	RAR	rar a -m5 -md64m -mc63:128t -mt1	30044 bytes	-5501 bytes (-15.48%)
PPMd (Wikipedia)	7zip	7za a -mx=9 -m0=ppmd	31194 bytes	-4351 bytes (-12.24%)
Brotli (Wikipedia)	brotli	brotli -q 11	32755 bytes	-2790 bytes (-7.85%)
Burrows-Wheeler transform (Wikipedia)	bzip2	bzip2 -9	33713 bytes	-1832 bytes (-5.15%)
LZMA2 (Wikipedia)	xz	xz -9	34108 bytes	-1437 bytes (-4.04%)
Zstandard (Wikipedia)	zstd	zstd -19	34932 bytes	-613 bytes (-1.72%)

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.