Vue 2.4.2 - as small as it gets (near-perfect GZIP compression)

Choose a version:

The original file has 264975 bytes (258.8k) and is available from the project website.
There you can find the official minified version, too, which brings down the size to 81826 bytes (79.9k, 31%).

After GZIP compression these minified files vary in size:

Boot	34081 bytes (33.3k)	CDN
cdnjs	29913 bytes (29.2k)	CDN
gzip -6 (default)	29718 bytes (29.0k)	local copy
unpkg	29700 bytes (29.0k)	CDN
gzip -9	29687 bytes (29.0k)	local copy
libdeflate -12	28755 bytes (28.1k)	local copy
7zip -mx=9 -tgzip	28737 bytes (28.1k)	local copy
kzip -s0 -rn -b1	28722 bytes (28.0k)	local copy
zultra	28719 bytes (28.0k)	local copy
pigz -11 -n	28689 bytes (28.0k)	local copy
Zopfli	28645 bytes (28.0k)	local copy

perma-link to the smallest file on my server:
http://minime.stephan-brumme.com/files/vue/vue-2.4.2.min.js (or via HTTPS)

You will automatically get the smallest Vue 2.4.2 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 1055 bytes by using my Vue 2.4.2 Zopfli version instead of the best available CDN (3.68% smaller than unpkg, 28645 vs. 29700 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 --mls8192 --bsr8 --lazy --ohh

(found July 25, 2017)

Description	Value	Parameter
iterations	1000000	--i1000000
maximum blocks	8	--mb8
maximum length score	8192	--mls8192
block splitting recursion	8	--bsr8
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://raw.githubusercontent.com/vuejs/vue/vue-2.4.2.min.js --location | md5sum
b0473a59bd7e655c4da3d26f50dbba1e -
curl --silent --compressed https://minime.stephan-brumme.com/files/vue/vue-2.4.2.min.zopfli.js.gz | md5sum
b0473a59bd7e655c4da3d26f50dbba1e -

SHA1:
curl --silent --compressed https://raw.githubusercontent.com/vuejs/vue/vue-2.4.2.min.js --location | sha1sum
1753ce899ac64e40e4688a6878e6a52d979488ef -
curl --silent --compressed https://minime.stephan-brumme.com/files/vue/vue-2.4.2.min.zopfli.js.gz | sha1sum
1753ce899ac64e40e4688a6878e6a52d979488ef -

All listed CDNs deliver identical contents:

CDN	Size (compressed)	MD5 (uncompressed)	Timestamp
Boot	34081 bytes	b0473a59bd7e655c4da3d26f50dbba1e	(invalid)
cdnjs	29913 bytes	b0473a59bd7e655c4da3d26f50dbba1e	(invalid)
unpkg	29700 bytes	b0473a59bd7e655c4da3d26f50dbba1e	July 25, 2017 @ 07:25

Note: only the MD5 hashes are shown to keep things simple.

Other Versions

Available Vue versions at minime.stephan-brumme.com:

2.6.14, 2.6.13, 2.6.12, 2.6.11, 2.6.10, 2.6.9, 2.6.8, 2.6.7, 2.6.6, 2.6.5, 2.6.4, 2.6.3, 2.6.2, 2.6.1, 2.6.0, 2.5.22, 2.5.21, 2.5.20, 2.5.19, 2.5.18, 2.5.17, 2.5.16, 2.5.15, 2.5.14, 2.5.13, 2.5.12, 2.5.11, 2.5.10, 2.5.9, 2.5.8, 2.5.7, 2.5.6, 2.5.5, 2.5.4, 2.5.3, 2.5.2, 2.5.1, 2.5.0, 2.4.4, 2.4.3, 2.4.2, 2.4.1, 2.4.0, 2.3.4, 2.3.3, 2.3.2, 2.3.1, 2.3.0, 2.2.6, 2.2.5, 2.2.4, 2.2.3, 2.2.2, 2.2.1, 2.2.0, 2.1.10, 2.1.9, 2.1.8, 2.1.7, 2.1.6, 2.1.5, 2.1.4, 2.1.3, 2.1.2, 2.1.1, 2.1.0, 2.0.8, 2.0.7, 2.0.6, 2.0.5, 2.0.4, 2.0.3, 2.0.2, 2.0.1, 2.0.0,
1.0.28, 1.0.27, 1.0.26, 1.0.25, 1.0.24, 1.0.23, 1.0.22, 1.0.21, 1.0.20, 1.0.19, 1.0.18, 1.0.17, 1.0.16, 1.0.15, 1.0.14, 1.0.13, 1.0.12, 1.0.11, 1.0.10, 1.0.9,
0.10.6, 0.10.5, 0.10.4, 0.10.3, 0.10.2, 0.10.1, 0.10.0,
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 AngularJS, BackboneJS, Bootstrap, D3, Dojo, Ember, jQuery, Knockout, lodash, React, Socket.IO, ThreeJS and UnderscoreJS.

Changelog

Best Zopfli parameters so far:

Size	Improvement	Parameters	Found
28645 bytes	-1 byte	zopfli --i1000000 --mls8192 --bsr8 --lazy --ohh	July 25, 2017 @ 13:09
28646 bytes	-1 byte	zopfli --i100000 --mls8192 --bsr8 --lazy --ohh	July 25, 2017 @ 08:55
28647 bytes	-4 bytes	zopfli --i10000 --mls8192 --bsr8 --lazy --ohh	July 25, 2017 @ 07:49
28651 bytes	-3 bytes	zopfli --i1000 --mls8192 --bsr19 --lazy --ohh	July 25, 2017 @ 07:31
28654 bytes	-1 byte	zopfli --i1000 --mls8192 --bsr9 --lazy --ohh	July 25, 2017 @ 07:30
28655 bytes	-1 byte	zopfli --i1000 --mls32768 --bsr8 --lazy --ohh	July 25, 2017 @ 07:30
28656 bytes	-1 byte	zopfli --i1000 --mls128 --bsr11 --lazy --ohh	July 25, 2017 @ 07:30
28657 bytes	–	zopfli --i100 --mls32768 --bsr8 --lazy --ohh	July 25, 2017 @ 07:26

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 @ 12:51.

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	28689	28680	28689	28680	28680	28677	28680	28680	28678	28653	28672	28654	28656	28670	28662
4	28679	28678	28680	28679	28680	28680	28677	28677	28675	28659	28658	28666	28667	28671	28661
6	28655	28663	28658	28665	28658	28657	28671	28655	28668	28654	28654	28667	28652	28668	28657
7	28672	28671	28671	28675	28679	28655	28653	28655	28667	28656	28652	28667	28652	28671	28657
8	28672	28672	28673	28675	28672	28655	28672	28674	28653	28653	28656	28669	28645	28658	28654
9	28676	28672	28673	28673	28675	28658	28655	28655	28666	28668	28657	28667	28648	28664	28655
10	28671	28670	28672	28660	28656	28656	28657	28655	28660	28669	28654	28666	28651	28663	28654
11	28672	28675	28674	28674	28672	28655	28654	28660	28659	28657	28655	28667	28667	28659	28655
12	28671	28671	28672	28675	28676	28655	28653	28655	28653	28654	28652	28667	28651	28658	28653
13	28672	28670	28672	28659	28659	28654	28655	28660	28653	28657	28652	28667	28652	28658	28658
14	28671	28670	28671	28670	28657	28655	28656	28654	28654	28656	28655	28667	28651	28666	28655
15	28670	28670	28671	28675	28671	28654	28656	28655	28655	28657	28653	28667	28667	28658	28652
16	28673	28671	28675	28674	28657	28662	28655	28659	28657	28668	28653	28667	28651	28658	28654
17	28673	28673	28672	28672	28672	28654	28654	28651	28654	28656	28655	28667	28653	28658	28653
18	28672	28672	28671	28673	28656	28655	28656	28652	28656	28656	28655	28667	28652	28659	28652
19	28671	28670	28672	28675	28676	28670	28670	28653	28657	28654	28652	28667	28645	28657	28654
20	28673	28672	28672	28674	28670	28654	28653	28674	28668	28678	28652	28667	28666	28655	28658
21	28672	28674	28672	28662	28656	28657	28657	28676	28653	28655	28652	28667	28651	28657	28659
22	28671	28674	28671	28675	28671	28655	28653	28660	28655	28657	28657	28667	28652	28666	28653
23	28672	28671	28660	28660	28663	28655	28654	28654	28656	28657	28654	28667	28652	28658	28659
25	28672	28669	28672	28672	28670	28657	28672	28675	28668	28657	28652	28667	28652	28661	28655
30	28671	28670	28671	28672	28671	28670	28671	28674	28654	28654	28651	28667	28652	28661	28655
40	28671	28670	28673	28675	28671	28657	28670	28655	28668	28657	28652	28667	28652	28657	28654

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	28657 bytes	–	100%
1,000	28651 bytes	-6 bytes	100%
10,000	28647 bytes	-4 bytes	100%
100,000	28646 bytes	-1 byte	0.87%
1,000,000	28645 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)	28722 bytes	+77 bytes (+0.27%)	–
1	28722 bytes	+77 bytes (+0.27%)	–
2	28740 bytes	+95 bytes (+0.33%)	+18 bytes
3	28729 bytes	+84 bytes (+0.29%)	+7 bytes
4	28734 bytes	+89 bytes (+0.31%)	+12 bytes
5	28750 bytes	+105 bytes (+0.37%)	+28 bytes
6	28785 bytes	+140 bytes (+0.49%)	+63 bytes
7	28818 bytes	+173 bytes (+0.60%)	+96 bytes
8	28821 bytes	+176 bytes (+0.61%)	+99 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	23668 bytes	-4977 bytes (-17.37%)
RAR (proprietary)	RAR	rar a -m5 -md64m -mc63:128t -mt1	24283 bytes	-4362 bytes (-15.23%)
PPMd (Wikipedia)	7zip	7za a -mx=9 -m0=ppmd	25242 bytes	-3403 bytes (-11.88%)
Brotli (Wikipedia)	brotli	brotli -q 11	26653 bytes	-1992 bytes (-6.95%)
Burrows-Wheeler transform (Wikipedia)	bzip2	bzip2 -9	27207 bytes	-1438 bytes (-5.02%)
LZMA2 (Wikipedia)	xz	xz -9	27356 bytes	-1289 bytes (-4.50%)
Zstandard (Wikipedia)	zstd	zstd -19	28092 bytes	-553 bytes (-1.93%)

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.