AngularJS 1.7.1 - as small as it gets (near-perfect GZIP compression)

Choose a version:

The original file has 1332168 bytes (1,300.9k) and is available from the project website.
There you can find the official minified version, too, which brings down the size to 171387 bytes (167.4k, 13%).

After GZIP compression these minified files vary in size:

Boot	60152 bytes (58.7k)	CDN
cdnjs	60152 bytes (58.7k)	CDN
Google	60027 bytes (58.6k)	CDN
unpkg	59719 bytes (58.3k)	CDN
gzip -6 (default)	59697 bytes (58.3k)	local copy
gzip -9	59553 bytes (58.2k)	local copy
7zip -mx=9 -tgzip	57739 bytes (56.4k)	local copy
zultra	57728 bytes (56.4k)	local copy
libdeflate -12	57721 bytes (56.4k)	local copy
kzip -s0 -rn -b6	57705 bytes (56.4k)	local copy
pigz -11 -n	57642 bytes (56.3k)	local copy
Zopfli	57601 bytes (56.3k)	local copy
Zopfli (defluff)	57599 bytes (56.2k)	local copy

perma-link to the smallest file on my server:
http://minime.stephan-brumme.com/files/angularjs/angular-1.7.1.min.js (or via HTTPS)

You will automatically get the smallest AngularJS 1.7.1 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 2118 bytes by using my AngularJS 1.7.1 Zopfli version instead of the best available CDN (3.68% smaller than unpkg, 57601 vs. 59719 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 --i1000000 --mb8 --mls512 --bsr20 --lazy --ohh

(found June 12, 2018)

Description	Value	Parameter
iterations	1000000	--i1000000
maximum blocks	8	--mb8
maximum length score	512	--mls512
block splitting recursion	20	--bsr20
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 (57599 bytes).

Download

Verify file integrity

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

MD5:
curl --silent --compressed https://code.angularjs.org/1.7.1/angular.min.js --location | md5sum
406649793abe268ff4755ee5875d27e1 -
curl --silent --compressed https://minime.stephan-brumme.com/files/angularjs/angular-1.7.1.min.zopfli.js.gz | md5sum
406649793abe268ff4755ee5875d27e1 -

SHA1:
curl --silent --compressed https://code.angularjs.org/1.7.1/angular.min.js --location | sha1sum
4e93f8ded28ef788ec699097e3941aabccecc569 -
curl --silent --compressed https://minime.stephan-brumme.com/files/angularjs/angular-1.7.1.min.zopfli.js.gz | sha1sum
4e93f8ded28ef788ec699097e3941aabccecc569 -

All listed CDNs deliver identical contents:

CDN	Size (compressed)	MD5 (uncompressed)	Timestamp
Boot	60152 bytes	406649793abe268ff4755ee5875d27e1	June 26, 2018 @ 12:15
cdnjs	60152 bytes	406649793abe268ff4755ee5875d27e1	June 26, 2018 @ 12:15
Google	60027 bytes	406649793abe268ff4755ee5875d27e1	June 16, 2018 @ 20:15
unpkg	59719 bytes	406649793abe268ff4755ee5875d27e1	(invalid)

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
57601 bytes	-1 byte	zopfli --i1000000 --mls512 --bsr20 --lazy --ohh	June 12, 2018 @ 10:34
57602 bytes	-6 bytes	zopfli --i100000 --mls512 --bsr11 --lazy --ohh	June 11, 2018 @ 20:00
57608 bytes	-3 bytes	zopfli --i10000 --mls512 --bsr11 --lazy --ohh	June 11, 2018 @ 18:01
57611 bytes	-1 byte	zopfli --i1000 --mls512 --bsr21 --lazy --ohh	June 11, 2018 @ 17:28
57612 bytes	-9 bytes	zopfli --i1000 --mls512 --bsr40 --lazy --ohh	June 11, 2018 @ 17:27
57621 bytes	–	zopfli --i100 --mls512 --bsr20 --lazy --ohh	June 11, 2018 @ 17:23

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 @ 12:43.

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, 100,000 or 1,000,000.

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	57669	57671	57671	57673	57673	57673	57664	57673	57668	57671	57642	57641	57646	57639	57672
4	57650	57643	57650	57651	57640	57641	57638	57636	57636	57629	57635	57631	57637	57625	57657
6	57656	57658	57656	57657	57648	57651	57641	57629	57633	57627	57636	57635	57636	57635	57646
7	57650	57638	57656	57656	57658	57653	57633	57626	57639	57641	57640	57636	57636	57636	57633
8	57644	57656	57658	57653	57660	57653	57638	57628	57631	57631	57626	57637	57632	57631	57659
9	57656	57643	57649	57652	57650	57649	57639	57628	57631	57631	57618	57636	57636	57630	57651
10	57646	57645	57660	57643	57640	57639	57624	57622	57609	57621	57619	57619	57636	57630	57653
11	57647	57646	57643	57655	57613	57622	57621	57604	57601	57618	57619	57620	57636	57630	57652
12	57637	57646	57656	57658	57655	57658	57617	57610	57609	57610	57610	57618	57618	57636	57632
13	57641	57631	57654	57656	57641	57634	57626	57611	57612	57627	57618	57619	57619	57619	57638
14	57644	57636	57649	57658	57623	57623	57626	57613	57613	57610	57620	57621	57620	57637	57652
15	57661	57625	57655	57656	57657	57634	57620	57613	57611	57628	57636	57621	57619	57614	57640
16	57641	57624	57641	57657	57621	57633	57618	57609	57621	57610	57618	57619	57619	57611	57638
17	57627	57626	57642	57639	57622	57638	57624	57610	57612	57609	57615	57620	57620	57613	57653
18	57639	57626	57656	57640	57639	57657	57625	57611	57603	57611	57620	57618	57618	57613	57638
19	57628	57628	57641	57641	57620	57639	57625	57611	57617	57628	57619	57619	57619	57614	57656
20	57652	57622	57642	57656	57639	57636	57621	57609	57601	57618	57618	57618	57618	57629	57656
21	57629	57628	57640	57642	57622	57643	57617	57611	57604	57617	57618	57619	57620	57629	57647
22	57650	57628	57644	57642	57639	57639	57625	57611	57610	57611	57618	57625	57635	57628	57650
23	57647	57646	57643	57642	57635	57632	57622	57612	57610	57628	57619	57620	57636	57628	57652
25	57634	57645	57631	57642	57624	57640	57618	57622	57618	57612	57619	57618	57619	57627	57635
30	57646	57645	57639	57637	57621	57632	57621	57612	57610	57614	57619	57618	57619	57616	57632
40	57650	57635	57639	57640	57635	57641	57626	57619	57609	57609	57619	57617	57621	57629	57633

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	57621 bytes	–	100%
1,000	57611 bytes	-10 bytes	100%
10,000	57608 bytes	-3 bytes	100%
100,000	57602 bytes	-6 bytes	1.45%
1,000,000	57601 bytes	-1 byte	0.58%
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)	57757 bytes	+156 bytes (+0.27%)	+52 bytes
1	57759 bytes	+158 bytes (+0.27%)	+54 bytes
2	57780 bytes	+179 bytes (+0.31%)	+75 bytes
3	57747 bytes	+146 bytes (+0.25%)	+42 bytes
4	57780 bytes	+179 bytes (+0.31%)	+75 bytes
5	57771 bytes	+170 bytes (+0.30%)	+66 bytes
6	57705 bytes	+104 bytes (+0.18%)	–
7	57722 bytes	+121 bytes (+0.21%)	+17 bytes
8	57743 bytes	+142 bytes (+0.25%)	+38 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	44413 bytes	-13188 bytes (-22.90%)
RAR (proprietary)	RAR	rar a -m5 -md64m -mc63:128t -mt1	46985 bytes	-10616 bytes (-18.43%)
PPMd (Wikipedia)	7zip	7za a -mx=9 -m0=ppmd	48759 bytes	-8842 bytes (-15.35%)
Brotli (Wikipedia)	brotli	brotli -q 11	52358 bytes	-5243 bytes (-9.10%)
Burrows-Wheeler transform (Wikipedia)	bzip2	bzip2 -9	52991 bytes	-4610 bytes (-8.00%)
LZMA2 (Wikipedia)	xz	xz -9	53864 bytes	-3737 bytes (-6.49%)
Zstandard (Wikipedia)	zstd	zstd -19	55429 bytes	-2172 bytes (-3.77%)

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.