Vue 2.5.8 - as small as it gets (near-perfect GZIP compression)

Choose a version:

The original file has 283026 bytes (276.4k) and is available from the project website.
There you can find the official minified version, too, which brings down the size to 86400 bytes (84.4k, 31%).

After GZIP compression these minified files vary in size:

Boot	36121 bytes (35.3k)	CDN
cdnjs	31774 bytes (31.0k)	CDN
gzip -6 (default)	31590 bytes (30.8k)	local copy
unpkg	31556 bytes (30.8k)	CDN
gzip -9	31538 bytes (30.8k)	local copy
libdeflate -12	30564 bytes (29.8k)	local copy
7zip -mx=9 -tgzip	30521 bytes (29.8k)	local copy
kzip -s0 -rn -b0	30514 bytes (29.8k)	local copy
pigz -11 -n	30464 bytes (29.8k)	local copy
zultra	30452 bytes (29.7k)	local copy
Zopfli	30432 bytes (29.7k)	local copy

perma-link to the smallest file on my server:
http://minime.stephan-brumme.com/files/vue/vue-2.5.8.min.js (or via HTTPS)

You will automatically get the smallest Vue 2.5.8 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 1124 bytes by using my Vue 2.5.8 Zopfli version instead of the best available CDN (3.69% smaller than unpkg, 30432 vs. 31556 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 --mls1024 --bsr15 --lazy --ohh

(found November 28, 2017)

Description	Value	Parameter
iterations	100000	--i100000
maximum blocks	8	--mb8
maximum length score	1024	--mls1024
block splitting recursion	15	--bsr15
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-2.5.8.min.js --location | md5sum
d2d92307858e584e8b90a1523c0a5150 -
curl --silent --compressed https://minime.stephan-brumme.com/files/vue/vue-2.5.8.min.zopfli.js.gz | md5sum
d2d92307858e584e8b90a1523c0a5150 -

SHA1:
curl --silent --compressed https://raw.githubusercontent.com/vuejs/vue/vue-2.5.8.min.js --location | sha1sum
6b883b2c931c1cbf06ce373d27fe5051728b4d0b -
curl --silent --compressed https://minime.stephan-brumme.com/files/vue/vue-2.5.8.min.zopfli.js.gz | sha1sum
6b883b2c931c1cbf06ce373d27fe5051728b4d0b -

All listed CDNs deliver identical contents:

CDN	Size (compressed)	MD5 (uncompressed)	Timestamp
Boot	36121 bytes	d2d92307858e584e8b90a1523c0a5150	(invalid)
cdnjs	31774 bytes	d2d92307858e584e8b90a1523c0a5150	(invalid)
unpkg	31556 bytes	d2d92307858e584e8b90a1523c0a5150	(invalid)

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
30432 bytes	-1 byte	zopfli --i100000 --mls1024 --bsr15 --lazy --ohh	November 28, 2017 @ 17:04
30433 bytes	-1 byte	zopfli --i100000 --mls2 --bsr6 --lazy --ohh	November 28, 2017 @ 15:37
30434 bytes	-1 byte	zopfli --i10000 --mls2 --bsr6 --lazy --ohh	November 28, 2017 @ 13:24
30435 bytes	-4 bytes	zopfli --i10000 --mls2 --bsr23 --lazy --ohh	November 28, 2017 @ 13:21
30439 bytes	-3 bytes	zopfli --i1000 --mls4 --bsr20 --lazy --ohh	November 28, 2017 @ 12:36
30442 bytes	-2 bytes	zopfli --i1000 --mls512 --bsr15 --lazy --ohh	November 28, 2017 @ 12:35
30444 bytes	–	zopfli --i100 --mls4 --bsr20 --lazy --ohh	November 28, 2017 @ 12:02

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 @ 12:56.

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	30472	30468	30456	30457	30464	30455	30457	30461	30456	30457	30457	30459	30440	30446	30451
4	30442	30443	30442	30442	30438	30440	30461	30462	30462	30441	30456	30457	30462	30449	30438
6	30433	30445	30438	30439	30435	30436	30440	30437	30437	30445	30456	30458	30462	30442	30444
7	30454	30461	30457	30438	30436	30438	30438	30437	30453	30438	30452	30452	30462	30436	30451
8	30447	30446	30460	30453	30456	30438	30438	30436	30453	30439	30451	30439	30457	30457	30443
9	30462	30456	30461	30457	30438	30439	30437	30462	30436	30437	30452	30437	30438	30442	30452
10	30455	30469	30437	30463	30437	30436	30438	30438	30438	30442	30437	30455	30466	30439	30447
11	30445	30452	30436	30437	30437	30438	30438	30466	30465	30438	30452	30437	30457	30438	30447
12	30435	30441	30438	30442	30437	30439	30440	30437	30465	30439	30452	30455	30441	30441	30447
13	30443	30445	30439	30438	30438	30438	30440	30437	30463	30443	30452	30439	30457	30447	30446
14	30444	30444	30443	30453	30440	30440	30435	30438	30436	30436	30456	30438	30441	30436	30451
15	30457	30461	30457	30438	30442	30441	30440	30437	30433	30432	30451	30452	30457	30436	30451
16	30436	30437	30440	30439	30440	30442	30437	30437	30435	30440	30437	30458	30458	30446	30450
17	30445	30462	30440	30440	30438	30440	30435	30436	30436	30438	30456	30439	30439	30438	30451
18	30459	30455	30457	30457	30441	30440	30440	30466	30435	30440	30456	30437	30452	30438	30450
19	30459	30461	30456	30457	30438	30439	30437	30435	30435	30436	30452	30437	30441	30440	30451
20	30440	30436	30444	30451	30455	30439	30438	30436	30438	30439	30452	30456	30449	30438	30451
21	30443	30456	30435	30442	30439	30438	30438	30437	30435	30439	30452	30459	30441	30438	30446
22	30458	30457	30457	30456	30438	30439	30437	30437	30435	30446	30452	30458	30448	30441	30450
23	30435	30448	30436	30441	30437	30440	30439	30437	30436	30442	30452	30436	30458	30448	30451
25	30433	30461	30457	30435	30438	30438	30438	30435	30435	30439	30456	30458	30457	30444	30443
30	30438	30461	30437	30438	30438	30442	30439	30437	30436	30439	30452	30437	30458	30448	30447
40	30443	30450	30436	30442	30438	30439	30438	30437	30436	30439	30456	30439	30462	30441	30438

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	30444 bytes	–	100%
1,000	30439 bytes	-5 bytes	100%
10,000	30434 bytes	-5 bytes	100%
100,000	30432 bytes	-2 bytes	1.16%
1,000,000	30432 bytes	–	0.29%
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)	30514 bytes	+82 bytes (+0.27%)	–
1	30514 bytes	+82 bytes (+0.27%)	–
2	30532 bytes	+100 bytes (+0.33%)	+18 bytes
3	30516 bytes	+84 bytes (+0.28%)	+2 bytes
4	30534 bytes	+102 bytes (+0.34%)	+20 bytes
5	30561 bytes	+129 bytes (+0.42%)	+47 bytes
6	30594 bytes	+162 bytes (+0.53%)	+80 bytes
7	30623 bytes	+191 bytes (+0.63%)	+109 bytes
8	30646 bytes	+214 bytes (+0.70%)	+132 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	24905 bytes	-5527 bytes (-18.16%)
RAR (proprietary)	RAR	rar a -m5 -md64m -mc63:128t -mt1	25769 bytes	-4663 bytes (-15.32%)
PPMd (Wikipedia)	7zip	7za a -mx=9 -m0=ppmd	26834 bytes	-3598 bytes (-11.82%)
Brotli (Wikipedia)	brotli	brotli -q 11	28277 bytes	-2155 bytes (-7.08%)
Burrows-Wheeler transform (Wikipedia)	bzip2	bzip2 -9	28848 bytes	-1584 bytes (-5.21%)
LZMA2 (Wikipedia)	xz	xz -9	29076 bytes	-1356 bytes (-4.46%)
Zstandard (Wikipedia)	zstd	zstd -19	29854 bytes	-578 bytes (-1.90%)

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.