Vue 2.6.3 - as small as it gets (near-perfect GZIP compression)

Choose a version:

The original file has 335442 bytes (327.6k) and is available from the project website.
There you can find the official minified version, too, which brings down the size to 92599 bytes (90.4k, 28%).

After GZIP compression these minified files vary in size:

unpkg	39457 bytes (38.5k)	CDN
Boot	33896 bytes (33.1k)	CDN
cdnjs	33896 bytes (33.1k)	CDN
gzip -6 (default)	33686 bytes (32.9k)	local copy
gzip -9	33618 bytes (32.8k)	local copy
libdeflate -12	32532 bytes (31.8k)	local copy
7zip -mx=9 -tgzip	32463 bytes (31.7k)	local copy
kzip -s0 -rn -b5	32431 bytes (31.7k)	local copy
zultra	32429 bytes (31.7k)	local copy
pigz -11 -n	32404 bytes (31.6k)	local copy
Zopfli	32377 bytes (31.6k)	local copy

perma-link to the smallest file on my server:
http://minime.stephan-brumme.com/files/vue/vue-2.6.3.min.js (or via HTTPS)

You will automatically get the smallest Vue 2.6.3 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 1519 bytes by using my Vue 2.6.3 Zopfli version instead of the best available CDN (4.69% smaller than cdnjs, 32377 vs. 33896 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 --bsr18 --lazy --ohh

(found February 8, 2019)

Description	Value	Parameter
iterations	1000000	--i1000000
maximum blocks	8	--mb8
maximum length score	8192	--mls8192
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://raw.githubusercontent.com/vuejs/vue/vue-2.6.3.min.js --location | md5sum
35fd97cf113f1716c8175be12a0452f9 -
curl --silent --compressed https://minime.stephan-brumme.com/files/vue/vue-2.6.3.min.zopfli.js.gz | md5sum
35fd97cf113f1716c8175be12a0452f9 -

SHA1:
curl --silent --compressed https://raw.githubusercontent.com/vuejs/vue/vue-2.6.3.min.js --location | sha1sum
d6d6c3b41d1e557522c983bd2bf99f80eb68fe8c -
curl --silent --compressed https://minime.stephan-brumme.com/files/vue/vue-2.6.3.min.zopfli.js.gz | sha1sum
d6d6c3b41d1e557522c983bd2bf99f80eb68fe8c -

All listed CDNs deliver identical contents:

CDN	Size (compressed)	MD5 (uncompressed)	Timestamp
unpkg	39457 bytes	35fd97cf113f1716c8175be12a0452f9	(invalid)
Boot	33896 bytes	35fd97cf113f1716c8175be12a0452f9	(invalid)
cdnjs	33896 bytes	35fd97cf113f1716c8175be12a0452f9	(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
32377 bytes	-2 bytes	zopfli --i1000000 --mls8192 --bsr18 --lazy --ohh	February 8, 2019 @ 19:53
32379 bytes	-2 bytes	zopfli --i100000 --mls8192 --bsr18 --lazy --ohh	February 7, 2019 @ 18:00
32381 bytes	-6 bytes	zopfli --i10000 --mls8192 --bsr18 --lazy --ohh	February 7, 2019 @ 12:04
32387 bytes	-2 bytes	zopfli --i1000 --mls8192 --bsr18 --lazy --ohh	February 7, 2019 @ 11:11
32389 bytes	-1 byte	zopfli --i1000 --mls8192 --bsr40 --lazy --ohh	February 7, 2019 @ 11:10
32390 bytes	–	zopfli --i100 --mls4096 --bsr2 --lazy --ohh	February 7, 2019 @ 10:54

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 @ 12:49.

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	32390	32389	32391	32389	32395	32394	32405	32398	32408	32407	32420	32384	32384	32390	32392
4	32390	32391	32391	32397	32391	32395	32391	32405	32406	32407	32397	32393	32390	32401	32406
6	32391	32392	32391	32400	32402	32397	32408	32395	32402	32393	32390	32395	32388	32413	32393
7	32391	32394	32391	32392	32393	32393	32397	32400	32406	32407	32390	32398	32390	32397	32392
8	32392	32391	32392	32399	32401	32396	32401	32393	32402	32405	32397	32393	32385	32393	32393
9	32391	32389	32391	32398	32401	32396	32397	32417	32406	32393	32390	32393	32384	32399	32395
10	32389	32394	32393	32399	32390	32396	32392	32411	32402	32408	32396	32385	32386	32400	32393
11	32392	32392	32392	32398	32402	32398	32408	32411	32404	32409	32391	32388	32388	32400	32394
12	32391	32391	32390	32399	32398	32392	32417	32393	32414	32412	32398	32387	32378	32400	32395
13	32392	32392	32391	32399	32401	32396	32408	32393	32402	32405	32399	32392	32388	32392	32394
14	32390	32390	32390	32399	32401	32396	32413	32413	32409	32405	32398	32393	32390	32400	32391
15	32391	32391	32391	32399	32398	32391	32409	32425	32404	32406	32391	32392	32383	32398	32394
16	32390	32394	32391	32397	32402	32396	32396	32409	32403	32411	32397	32389	32384	32400	32389
17	32391	32388	32392	32399	32402	32391	32393	32411	32405	32408	32391	32393	32383	32400	32393
18	32391	32391	32401	32401	32390	32395	32409	32410	32403	32408	32391	32393	32377	32400	32394
19	32391	32393	32391	32399	32401	32392	32405	32416	32402	32412	32393	32393	32385	32399	32393
20	32391	32389	32391	32398	32402	32396	32407	32411	32402	32406	32390	32392	32388	32399	32393
21	32392	32402	32404	32391	32401	32397	32409	32412	32408	32413	32414	32392	32388	32400	32393
22	32391	32393	32389	32400	32399	32396	32396	32410	32402	32409	32397	32392	32390	32399	32393
23	32391	32394	32396	32399	32398	32392	32395	32400	32404	32411	32391	32392	32385	32400	32394
25	32391	32406	32407	32400	32400	32395	32416	32410	32403	32412	32393	32393	32386	32399	32392
30	32392	32392	32391	32392	32390	32397	32410	32411	32402	32407	32397	32393	32388	32400	32394
40	32390	32388	32391	32398	32400	32391	32410	32408	32403	32400	32397	32393	32382	32400	32394

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	32390 bytes	–	100%
1,000	32387 bytes	-3 bytes	100%
10,000	32381 bytes	-6 bytes	100%
100,000	32379 bytes	-2 bytes	1.16%
1,000,000	32377 bytes	-2 bytes	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)	32495 bytes	+118 bytes (+0.36%)	+64 bytes
1	32493 bytes	+116 bytes (+0.36%)	+62 bytes
2	32493 bytes	+116 bytes (+0.36%)	+62 bytes
3	32476 bytes	+99 bytes (+0.31%)	+45 bytes
4	32490 bytes	+113 bytes (+0.35%)	+59 bytes
5	32431 bytes	+54 bytes (+0.17%)	–
6	32453 bytes	+76 bytes (+0.23%)	+22 bytes
7	32453 bytes	+76 bytes (+0.23%)	+22 bytes
8	32490 bytes	+113 bytes (+0.35%)	+59 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	26678 bytes	-5699 bytes (-17.60%)
RAR (proprietary)	RAR	rar a -m5 -md64m -mc63:128t -mt1	27627 bytes	-4750 bytes (-14.67%)
PPMd (Wikipedia)	7zip	7za a -mx=9 -m0=ppmd	28637 bytes	-3740 bytes (-11.55%)
Brotli (Wikipedia)	brotli	brotli -q 11	30388 bytes	-1989 bytes (-6.14%)
Burrows-Wheeler transform (Wikipedia)	bzip2	bzip2 -9	30959 bytes	-1418 bytes (-4.38%)
LZMA2 (Wikipedia)	xz	xz -9	31072 bytes	-1305 bytes (-4.03%)
Zstandard (Wikipedia)	zstd	zstd -19	31702 bytes	-675 bytes (-2.08%)

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.