Vue 2.5.3 - as small as it gets (near-perfect GZIP compression)

Choose a version:

The original file has 280472 bytes (273.9k) and is available from the project website.
There you can find the official minified version, too, which brings down the size to 85916 bytes (83.9k, 31%).

After GZIP compression these minified files vary in size:

Boot	35892 bytes (35.1k)	CDN
cdnjs	31550 bytes (30.8k)	CDN
gzip -6 (default)	31361 bytes (30.6k)	local copy
unpkg	31315 bytes (30.6k)	CDN
gzip -9	31302 bytes (30.6k)	local copy
libdeflate -12	30324 bytes (29.6k)	local copy
7zip -mx=9 -tgzip	30281 bytes (29.6k)	local copy
kzip -s0 -rn -b3	30280 bytes (29.6k)	local copy
pigz -11 -n	30231 bytes (29.5k)	local copy
zultra	30220 bytes (29.5k)	local copy
Zopfli	30174 bytes (29.5k)	local copy

perma-link to the smallest file on my server:
http://minime.stephan-brumme.com/files/vue/vue-2.5.3.min.js (or via HTTPS)

You will automatically get the smallest Vue 2.5.3 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 1141 bytes by using my Vue 2.5.3 Zopfli version instead of the best available CDN (3.78% smaller than unpkg, 30174 vs. 31315 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 --mls4 --bsr20 --lazy --ohh

(found November 6, 2017)

Description	Value	Parameter
iterations	1000000	--i1000000
maximum blocks	8	--mb8
maximum length score	4	--mls4
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

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-2.5.3.min.js --location | md5sum
6744973f2e5551ce30d819acb344c600 -
curl --silent --compressed https://minime.stephan-brumme.com/files/vue/vue-2.5.3.min.zopfli.js.gz | md5sum
6744973f2e5551ce30d819acb344c600 -

SHA1:
curl --silent --compressed https://raw.githubusercontent.com/vuejs/vue/vue-2.5.3.min.js --location | sha1sum
2ff12b3ae8a16f53ee373be8590e9afac85d8188 -
curl --silent --compressed https://minime.stephan-brumme.com/files/vue/vue-2.5.3.min.zopfli.js.gz | sha1sum
2ff12b3ae8a16f53ee373be8590e9afac85d8188 -

All listed CDNs deliver identical contents:

CDN	Size (compressed)	MD5 (uncompressed)	Timestamp
Boot	35892 bytes	6744973f2e5551ce30d819acb344c600	November 14, 2017 @ 18:15
cdnjs	31550 bytes	6744973f2e5551ce30d819acb344c600	(invalid)
unpkg	31315 bytes	6744973f2e5551ce30d819acb344c600	(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
30174 bytes	-2 bytes	zopfli --i1000000 --mls4 --bsr20 --lazy --ohh	November 6, 2017 @ 21:05
30176 bytes	-3 bytes	zopfli --i100000 --mls4 --bsr20 --lazy --ohh	November 6, 2017 @ 15:39
30179 bytes	-2 bytes	zopfli --i10000 --mls4 --bsr20 --lazy --ohh	November 6, 2017 @ 15:06
30181 bytes	-4 bytes	zopfli --i1000 --mls4 --bsr20 --lazy --ohh	November 6, 2017 @ 14:15
30185 bytes	–	zopfli --i100 --mls4 --bsr20 --lazy --ohh	November 6, 2017 @ 13:34

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, 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	30222	30224	30208	30229	30230	30212	30228	30230	30238	30212	30229	30206	30206	30213	30201
4	30203	30204	30207	30205	30213	30205	30232	30209	30233	30202	30204	30231	30203	30212	30213
6	30206	30205	30205	30205	30203	30218	30200	30208	30201	30209	30201	30207	30209	30201	30211
7	30205	30202	30203	30202	30205	30206	30200	30201	30199	30201	30202	30202	30205	30206	30204
8	30210	30226	30226	30225	30216	30204	30201	30202	30201	30203	30201	30208	30205	30227	30206
9	30231	30228	30228	30227	30205	30203	30209	30206	30203	30200	30202	30206	30203	30205	30205
10	30206	30207	30207	30209	30208	30206	30200	30207	30201	30204	30202	30198	30199	30206	30208
11	30205	30206	30209	30202	30203	30204	30199	30210	30202	30202	30204	30207	30208	30207	30205
12	30191	30204	30206	30206	30204	30207	30204	30202	30201	30203	30201	30202	30201	30206	30207
13	30204	30203	30205	30205	30205	30206	30199	30206	30202	30202	30201	30227	30205	30206	30219
14	30203	30204	30195	30205	30205	30206	30199	30206	30201	30200	30200	30206	30205	30204	30206
15	30205	30180	30203	30202	30204	30205	30199	30202	30200	30200	30202	30202	30206	30206	30206
16	30206	30203	30207	30206	30204	30206	30202	30204	30227	30202	30202	30206	30203	30207	30210
17	30201	30203	30204	30205	30204	30208	30205	30203	30201	30200	30204	30207	30204	30204	30206
18	30224	30224	30227	30225	30204	30206	30207	30218	30203	30203	30216	30201	30200	30205	30206
19	30225	30223	30224	30206	30204	30207	30202	30203	30205	30200	30202	30202	30204	30202	30219
20	30210	30174	30203	30206	30204	30208	30204	30206	30201	30203	30202	30206	30204	30205	30205
21	30203	30203	30203	30204	30204	30202	30199	30207	30203	30200	30200	30207	30205	30204	30204
22	30205	30205	30206	30205	30206	30204	30199	30202	30205	30202	30200	30207	30205	30205	30205
23	30204	30206	30205	30206	30204	30203	30200	30210	30202	30200	30201	30207	30207	30205	30207
25	30205	30205	30204	30206	30205	30206	30202	30232	30202	30203	30200	30208	30234	30206	30207
30	30211	30223	30203	30204	30206	30207	30205	30203	30202	30203	30202	30207	30206	30206	30206
40	30201	30203	30204	30206	30205	30205	30204	30203	30201	30201	30201	30208	30207	30206	30204

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	30185 bytes	–	100%
1,000	30181 bytes	-4 bytes	100%
10,000	30179 bytes	-2 bytes	100%
100,000	30176 bytes	-3 bytes	0.58%
1,000,000	30174 bytes	-2 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)	30286 bytes	+112 bytes (+0.37%)	+6 bytes
1	30286 bytes	+112 bytes (+0.37%)	+6 bytes
2	30303 bytes	+129 bytes (+0.43%)	+23 bytes
3	30280 bytes	+106 bytes (+0.35%)	–
4	30301 bytes	+127 bytes (+0.42%)	+21 bytes
5	30333 bytes	+159 bytes (+0.53%)	+53 bytes
6	30365 bytes	+191 bytes (+0.63%)	+85 bytes
7	30399 bytes	+225 bytes (+0.75%)	+119 bytes
8	30418 bytes	+244 bytes (+0.81%)	+138 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	24717 bytes	-5457 bytes (-18.09%)
RAR (proprietary)	RAR	rar a -m5 -md64m -mc63:128t -mt1	25562 bytes	-4612 bytes (-15.28%)
PPMd (Wikipedia)	7zip	7za a -mx=9 -m0=ppmd	26612 bytes	-3562 bytes (-11.80%)
Brotli (Wikipedia)	brotli	brotli -q 11	28101 bytes	-2073 bytes (-6.87%)
Burrows-Wheeler transform (Wikipedia)	bzip2	bzip2 -9	28659 bytes	-1515 bytes (-5.02%)
LZMA2 (Wikipedia)	xz	xz -9	28864 bytes	-1310 bytes (-4.34%)
Zstandard (Wikipedia)	zstd	zstd -19	29624 bytes	-550 bytes (-1.82%)

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.