AngularJS 0.9.13 - as small as it gets (near-perfect GZIP compression)

Choose a version:

The original file has 325415 bytes (317.8k) and is available from the project website.
There you can find the official minified version, too, which brings down the size to 62070 bytes (60.6k, 19%).

After GZIP compression these minified files vary in size:

Boot	28083 bytes (27.4k)	CDN
Baidu	25335 bytes (24.7k)	CDN
cdnjs	25261 bytes (24.7k)	CDN
gzip -6 (default)	25191 bytes (24.6k)	local copy
gzip -9	25143 bytes (24.6k)	local copy
libdeflate -12	24736 bytes (24.2k)	local copy
7zip -mx=9 -tgzip	24499 bytes (23.9k)	local copy
zultra	24362 bytes (23.8k)	local copy
kzip -s0 -rn -b3	24352 bytes (23.8k)	local copy
pigz -11 -n	24327 bytes (23.8k)	local copy
Zopfli	24303 bytes (23.7k)	local copy

perma-link to the smallest file on my server:
http://minime.stephan-brumme.com/files/angularjs/angular-0.9.13.min.js (or via HTTPS)

You will automatically get the smallest AngularJS 0.9.13 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 958 bytes by using my AngularJS 0.9.13 Zopfli version instead of the best available CDN (3.94% smaller than cdnjs, 24303 vs. 25261 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 5, 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/0.9.13/angular-0.9.13.min.js --location | md5sum
5bb2e6fc9fad465c5e36eb1d092ac30f -
curl --silent --compressed https://minime.stephan-brumme.com/files/angularjs/angular-0.9.13.min.zopfli.js.gz | md5sum
5bb2e6fc9fad465c5e36eb1d092ac30f -

SHA1:
curl --silent --compressed https://code.angularjs.org/0.9.13/angular-0.9.13.min.js --location | sha1sum
fcba8b17d97671bb1272b6f57dd6004f5fa08496 -
curl --silent --compressed https://minime.stephan-brumme.com/files/angularjs/angular-0.9.13.min.zopfli.js.gz | sha1sum
fcba8b17d97671bb1272b6f57dd6004f5fa08496 -

These CDNs send you the original file:

CDN	Size (compressed)	MD5 (uncompressed)	Timestamp
Boot	28083 bytes	5bb2e6fc9fad465c5e36eb1d092ac30f	March 18, 2015 @ 10:02
cdnjs	25261 bytes	5bb2e6fc9fad465c5e36eb1d092ac30f	March 28, 2014 @ 14:15

And some CDNs send you a different file:

CDN	Size (compressed)	MD5 (uncompressed)	Comment / Diff	Timestamp
Baidu	25335 bytes	7a6450deed290cd41d72cd5ad3cecadf	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
24303 bytes	-4 bytes	zopfli --i100000 --mls32 --bsr18 --lazy --ohh	February 5, 2016 @ 13:29
24307 bytes	-4 bytes	zopfli --i10000 --mls32 --bsr18 --lazy --ohh	October 21, 2015 @ 12:54
24311 bytes	-2 bytes	zopfli --i1000 --mls32 --bsr18 --lazy --ohh	September 20, 2015 @ 19:01
24313 bytes	-2 bytes	zopfli --i1000 --mls32768 --bsr10 --lazy --ohh	September 17, 2015 @ 03:14
24315 bytes	-1 byte	zopfli --i1000 --mls2048 --bsr14 --lazy --ohh	September 7, 2015 @ 22:18
24316 bytes	-1 byte	zopfli --i1000 --mls1024 --bsr11 --lazy --ohh	September 7, 2015 @ 22:16
24317 bytes	-1 byte	zopfli --i1000 --mls512 --bsr12 --lazy --ohh	September 7, 2015 @ 22:15
24318 bytes	–	zopfli --i100 --mls2048 --bsr13 --lazy --ohh	September 7, 2015 @ 16:15

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	24361	24360	24361	24364	24369	24372	24372	24374	24365	24314	24320	24324	24345	24338	24339
4	24320	24323	24324	24312	24311	24311	24316	24331	24329	24333	24326	24315	24331	24320	24328
6	24315	24314	24313	24315	24313	24315	24328	24328	24327	24324	24313	24312	24320	24328	24326
7	24314	24314	24313	24312	24313	24319	24317	24315	24313	24314	24316	24319	24312	24344	24312
8	24341	24339	24339	24336	24338	24336	24329	24331	24328	24315	24313	24323	24336	24320	24316
9	24338	24320	24310	24312	24311	24328	24313	24314	24317	24314	24323	24315	24315	24316	24314
10	24316	24319	24313	24311	24318	24315	24317	24330	24313	24319	24313	24314	24314	24316	24312
11	24312	24317	24313	24312	24316	24315	24314	24314	24312	24314	24313	24312	24317	24322	24318
12	24325	24317	24327	24315	24317	24316	24317	24315	24314	24312	24311	24313	24322	24319	24313
13	24324	24315	24327	24317	24320	24324	24319	24315	24314	24318	24311	24321	24321	24319	24318
14	24313	24314	24318	24314	24321	24322	24317	24315	24313	24315	24311	24320	24318	24319	24312
15	24314	24317	24321	24312	24310	24314	24314	24313	24313	24315	24319	24313	24315	24325	24314
16	24318	24313	24319	24316	24315	24316	24320	24327	24313	24314	24314	24317	24313	24314	24315
17	24318	24317	24310	24317	24316	24314	24316	24317	24314	24313	24310	24319	24318	24312	24317
18	24311	24317	24313	24312	24303	24315	24317	24313	24313	24314	24320	24311	24316	24320	24313
19	24311	24313	24310	24312	24316	24318	24313	24318	24312	24315	24311	24312	24314	24318	24312
20	24312	24311	24313	24311	24315	24315	24316	24317	24315	24312	24313	24317	24314	24319	24316
21	24316	24313	24315	24313	24313	24319	24316	24314	24315	24316	24316	24314	24320	24317	24316
22	24318	24315	24312	24312	24314	24316	24315	24315	24315	24317	24311	24312	24327	24320	24315
23	24317	24313	24311	24313	24316	24315	24316	24319	24315	24313	24315	24311	24314	24311	24315
25	24312	24314	24313	24312	24313	24318	24314	24315	24313	24316	24315	24316	24312	24320	24316
30	24312	24315	24310	24311	24311	24314	24317	24314	24313	24315	24311	24315	24315	24318	24315
40	24314	24313	24310	24312	24311	24315	24314	24314	24317	24313	24311	24310	24315	24321	24315

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	24315 bytes	–	100%
1,000	24311 bytes	-4 bytes	100%
10,000	24307 bytes	-4 bytes	100%
100,000	24303 bytes	-4 bytes	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)	24396 bytes	+93 bytes (+0.38%)	+44 bytes
1	24804 bytes	+501 bytes (+2.06%)	+452 bytes
2	24395 bytes	+92 bytes (+0.38%)	+43 bytes
3	24352 bytes	+49 bytes (+0.20%)	–
4	24366 bytes	+63 bytes (+0.26%)	+14 bytes
5	24399 bytes	+96 bytes (+0.40%)	+47 bytes
6	24427 bytes	+124 bytes (+0.51%)	+75 bytes
7	24427 bytes	+124 bytes (+0.51%)	+75 bytes
8	24432 bytes	+129 bytes (+0.53%)	+80 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	21232 bytes	-3071 bytes (-12.64%)
RAR (proprietary)	RAR	rar a -m5 -md64m -mc63:128t -mt1	21804 bytes	-2499 bytes (-10.28%)
Brotli (Wikipedia)	brotli	brotli -q 11	22554 bytes	-1749 bytes (-7.20%)
PPMd (Wikipedia)	7zip	7za a -mx=9 -m0=ppmd	22946 bytes	-1357 bytes (-5.58%)
LZMA2 (Wikipedia)	xz	xz -9	23832 bytes	-471 bytes (-1.94%)
Burrows-Wheeler transform (Wikipedia)	bzip2	bzip2 -9	24412 bytes	+109 bytes (+0.45%)
Zstandard (Wikipedia)	zstd	zstd -19	24546 bytes	+243 bytes (+1.00%)

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.