AngularJS 0.9.10 - as small as it gets (near-perfect GZIP compression)

Choose a version:

The original file has 289348 bytes (282.6k) and is available from the project website.
There you can find the official minified version, too, which brings down the size to 60268 bytes (58.9k, 21%).

After GZIP compression these minified files vary in size:

Boot	27265 bytes (26.6k)	CDN
Baidu	24611 bytes (24.0k)	CDN
cdnjs	24550 bytes (24.0k)	CDN
gzip -6 (default)	24483 bytes (23.9k)	local copy
gzip -9	24437 bytes (23.9k)	local copy
libdeflate -12	23916 bytes (23.4k)	local copy
7zip -mx=9 -tgzip	23617 bytes (23.1k)	local copy
zultra	23541 bytes (23.0k)	local copy
pigz -11 -n	23515 bytes (23.0k)	local copy
kzip -s0 -rn -b3	23514 bytes (23.0k)	local copy
Zopfli	23484 bytes (22.9k)	local copy

perma-link to the smallest file on my server:
http://minime.stephan-brumme.com/files/angularjs/angular-0.9.10.min.js (or via HTTPS)

You will automatically get the smallest AngularJS 0.9.10 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 1066 bytes by using my AngularJS 0.9.10 Zopfli version instead of the best available CDN (4.54% smaller than cdnjs, 23484 vs. 24550 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 --mls2048 --bsr19 --lazy --ohh

(found November 26, 2015)

Description	Value	Parameter
iterations	100000	--i100000
maximum blocks	8	--mb8
maximum length score	2048	--mls2048
block splitting recursion	19	--bsr19
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/0.9.10/angular-0.9.10.min.js --location | md5sum
86da8360984e44035d9673d414bc431f -
curl --silent --compressed https://minime.stephan-brumme.com/files/angularjs/angular-0.9.10.min.zopfli.js.gz | md5sum
86da8360984e44035d9673d414bc431f -

SHA1:
curl --silent --compressed https://code.angularjs.org/0.9.10/angular-0.9.10.min.js --location | sha1sum
4da9c74448ff7675c92d33865fd52185f68bac74 -
curl --silent --compressed https://minime.stephan-brumme.com/files/angularjs/angular-0.9.10.min.zopfli.js.gz | sha1sum
4da9c74448ff7675c92d33865fd52185f68bac74 -

These CDNs send you the original file:

CDN	Size (compressed)	MD5 (uncompressed)	Timestamp
Boot	27265 bytes	86da8360984e44035d9673d414bc431f	March 18, 2015 @ 10:02
cdnjs	24550 bytes	86da8360984e44035d9673d414bc431f	March 28, 2014 @ 14:15

And some CDNs send you a different file:

CDN	Size (compressed)	MD5 (uncompressed)	Comment / Diff	Timestamp
Baidu	24611 bytes	64ac74af5f3e1cdf9b6ecfbce4668f46	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
23484 bytes	-1 byte	zopfli --i100000 --mls2048 --bsr19 --lazy --ohh	November 26, 2015 @ 14:56
23485 bytes	-1 byte	zopfli --i100000 --mls256 --bsr16 --lazy --ohh	November 26, 2015 @ 14:33
23486 bytes	-1 byte	zopfli --i100000 --mls4 --bsr22 --lazy --ohh	November 26, 2015 @ 12:45
23487 bytes	-1 byte	zopfli --i10000 --mls256 --bsr16 --lazy --ohh	November 26, 2015 @ 11:09
23488 bytes	-1 byte	zopfli --i10000 --mls2048 --bsr23 --lazy --ohh	November 26, 2015 @ 11:07
23489 bytes	-1 byte	zopfli --i1000 --mls256 --bsr16 --lazy --ohh	September 17, 2015 @ 03:46
23490 bytes	-2 bytes	zopfli --i1000 --mls2048 --bsr12 --lazy --ohh	September 7, 2015 @ 22:29
23492 bytes	-7 bytes	zopfli --i1000 --mls512 --bsr9 --lazy --ohh	September 7, 2015 @ 22:27
23499 bytes	–	zopfli --i100 --mls2048 --bsr16 --lazy --ohh	September 7, 2015 @ 16:06

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 @ 12:54.

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	23555	23558	23515	23515	23515	23515	23516	23496	23488	23511	23508	23507	23524	23508	23509
4	23506	23499	23487	23489	23493	23505	23511	23507	23503	23516	23500	23493	23489	23502	23499
6	23504	23507	23495	23496	23498	23492	23492	23498	23507	23491	23488	23491	23506	23492	23508
7	23490	23497	23489	23488	23494	23502	23502	23499	23494	23493	23488	23493	23488	23490	23517
8	23489	23486	23492	23493	23492	23493	23495	23494	23494	23495	23501	23504	23488	23503	23492
9	23488	23491	23488	23490	23489	23493	23491	23507	23490	23488	23488	23491	23488	23492	23490
10	23489	23490	23488	23488	23492	23493	23494	23497	23495	23489	23488	23491	23492	23502	23499
11	23491	23491	23490	23491	23493	23494	23491	23493	23494	23490	23489	23493	23489	23491	23499
12	23490	23491	23490	23489	23494	23494	23493	23497	23490	23491	23488	23504	23490	23490	23499
13	23494	23495	23493	23494	23492	23492	23493	23497	23496	23492	23491	23489	23489	23487	23491
14	23489	23491	23489	23489	23489	23494	23493	23491	23494	23491	23491	23492	23491	23493	23499
15	23489	23490	23490	23492	23493	23492	23502	23501	23495	23489	23488	23493	23488	23492	23491
16	23491	23491	23494	23493	23494	23494	23493	23485	23498	23490	23488	23490	23489	23503	23498
17	23488	23489	23489	23488	23492	23491	23491	23489	23492	23490	23493	23484	23491	23492	23490
18	23488	23491	23493	23489	23493	23495	23498	23494	23495	23492	23488	23489	23488	23504	23488
19	23489	23495	23494	23490	23488	23495	23494	23492	23496	23491	23484	23491	23517	23492	23491
20	23490	23492	23492	23491	23488	23490	23491	23493	23495	23493	23489	23489	23489	23490	23490
21	23495	23491	23490	23490	23492	23495	23493	23497	23495	23492	23488	23492	23489	23508	23494
22	23490	23486	23490	23495	23493	23491	23491	23490	23496	23492	23489	23491	23488	23501	23488
23	23489	23490	23491	23489	23489	23490	23492	23494	23497	23493	23488	23492	23489	23490	23492
25	23488	23490	23491	23489	23489	23495	23491	23494	23494	23492	23486	23492	23489	23486	23489
30	23489	23489	23489	23493	23493	23494	23491	23497	23495	23494	23488	23491	23488	23502	23491
40	23488	23488	23485	23489	23492	23489	23494	23494	23496	23488	23488	23494	23486	23488	23489

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	23494 bytes	–	100%
1,000	23489 bytes	-5 bytes	100%
10,000	23487 bytes	-2 bytes	100%
100,000	23484 bytes	-3 bytes	3.19%
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)	23578 bytes	+94 bytes (+0.40%)	+64 bytes
1	23990 bytes	+506 bytes (+2.15%)	+476 bytes
2	23579 bytes	+95 bytes (+0.40%)	+65 bytes
3	23514 bytes	+30 bytes (+0.13%)	–
4	23532 bytes	+48 bytes (+0.20%)	+18 bytes
5	23531 bytes	+47 bytes (+0.20%)	+17 bytes
6	23549 bytes	+65 bytes (+0.28%)	+35 bytes
7	23589 bytes	+105 bytes (+0.45%)	+75 bytes
8	23623 bytes	+139 bytes (+0.59%)	+109 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	20536 bytes	-2948 bytes (-12.55%)
RAR (proprietary)	RAR	rar a -m5 -md64m -mc63:128t -mt1	21137 bytes	-2347 bytes (-9.99%)
Brotli (Wikipedia)	brotli	brotli -q 11	21829 bytes	-1655 bytes (-7.05%)
PPMd (Wikipedia)	7zip	7za a -mx=9 -m0=ppmd	22176 bytes	-1308 bytes (-5.57%)
LZMA2 (Wikipedia)	xz	xz -9	23076 bytes	-408 bytes (-1.74%)
Burrows-Wheeler transform (Wikipedia)	bzip2	bzip2 -9	23643 bytes	+159 bytes (+0.68%)
Zstandard (Wikipedia)	zstd	zstd -19	23775 bytes	+291 bytes (+1.24%)

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.