Vue 2.5.0 - as small as it gets (near-perfect GZIP compression)

Choose a version:

The original file has 277108 bytes (270.6k) and is available from the project website.
There you can find the official minified version, too, which brings down the size to 85009 bytes (83.0k, 31%).

After GZIP compression these minified files vary in size:

Boot	35489 bytes (34.7k)	CDN
cdnjs	31197 bytes (30.5k)	CDN
gzip -6 (default)	31019 bytes (30.3k)	local copy
unpkg	30967 bytes (30.2k)	CDN
gzip -9	30959 bytes (30.2k)	local copy
libdeflate -12	29970 bytes (29.3k)	local copy
7zip -mx=9 -tgzip	29938 bytes (29.2k)	local copy
kzip -s0 -rn -b0	29935 bytes (29.2k)	local copy
zultra	29905 bytes (29.2k)	local copy
pigz -11 -n	29887 bytes (29.2k)	local copy
Zopfli	29820 bytes (29.1k)	local copy

perma-link to the smallest file on my server:
http://minime.stephan-brumme.com/files/vue/vue-2.5.0.min.js (or via HTTPS)

You will automatically get the smallest Vue 2.5.0 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 1147 bytes by using my Vue 2.5.0 Zopfli version instead of the best available CDN (3.85% smaller than unpkg, 29820 vs. 30967 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 --mls2 --bsr23 --lazy --ohh

(found October 17, 2017)

Description	Value	Parameter
iterations	1000000	--i1000000
maximum blocks	8	--mb8
maximum length score	2	--mls2
block splitting recursion	23	--bsr23
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-2.5.0.min.js --location | md5sum
691137c9c2de59070918fb8c8b29f767 -
curl --silent --compressed https://minime.stephan-brumme.com/files/vue/vue-2.5.0.min.zopfli.js.gz | md5sum
691137c9c2de59070918fb8c8b29f767 -

SHA1:
curl --silent --compressed https://raw.githubusercontent.com/vuejs/vue/vue-2.5.0.min.js --location | sha1sum
35c1cf386ceb892bc32a57026baef3e6fc8f4588 -
curl --silent --compressed https://minime.stephan-brumme.com/files/vue/vue-2.5.0.min.zopfli.js.gz | sha1sum
35c1cf386ceb892bc32a57026baef3e6fc8f4588 -

All listed CDNs deliver identical contents:

CDN	Size (compressed)	MD5 (uncompressed)	Timestamp
Boot	35489 bytes	691137c9c2de59070918fb8c8b29f767	November 14, 2017 @ 18:15
cdnjs	31197 bytes	691137c9c2de59070918fb8c8b29f767	(invalid)
unpkg	30967 bytes	691137c9c2de59070918fb8c8b29f767	(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
29820 bytes	-3 bytes	zopfli --i1000000 --mls2 --bsr23 --lazy --ohh	October 17, 2017 @ 16:40
29823 bytes	-2 bytes	zopfli --i100000 --mls2 --bsr23 --lazy --ohh	October 16, 2017 @ 15:27
29825 bytes	-1 byte	zopfli --i10000 --mls2 --bsr23 --lazy --ohh	October 16, 2017 @ 10:51
29826 bytes	-3 bytes	zopfli --i10000 --mls2 --bsr6 --lazy --ohh	October 16, 2017 @ 10:48
29829 bytes	-1 byte	zopfli --i1000 --mls2 --bsr6 --lazy --ohh	October 16, 2017 @ 10:37
29830 bytes	-4 bytes	zopfli --i1000 --mls2 --bsr25 --lazy --ohh	October 16, 2017 @ 10:35
29834 bytes	-9 bytes	zopfli --i1000 --mls2 --bsr11 --lazy --ohh	October 16, 2017 @ 10:35
29843 bytes	–	zopfli --i100 --mls2 --bsr23 --lazy --ohh	October 16, 2017 @ 10:16

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 @ 12:47.

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	29874	29872	29874	29857	29855	29851	29885	29882	29883	29863	29858	29855	29878	29863	29854
4	29853	29854	29853	29852	29850	29875	29865	29880	29876	29853	29857	29854	29856	29852	29853
6	29820	29863	29854	29850	29852	29852	29860	29869	29872	29853	29854	29854	29856	29853	29857
7	29824	29854	29852	29851	29853	29853	29857	29873	29874	29853	29853	29857	29855	29853	29851
8	29861	29864	29861	29853	29851	29858	29853	29878	29870	29854	29853	29854	29854	29872	29853
9	29828	29853	29852	29852	29852	29877	29874	29881	29871	29870	29852	29870	29855	29874	29856
10	29849	29852	29852	29851	29851	29853	29885	29873	29866	29854	29851	29855	29855	29852	29853
11	29829	29852	29855	29852	29852	29880	29851	29866	29881	29852	29853	29853	29854	29850	29853
12	29830	29831	29830	29831	29852	29852	29851	29870	29868	29854	29854	29854	29856	29853	29854
13	29829	29853	29851	29852	29851	29855	29869	29869	29869	29854	29854	29856	29857	29853	29855
14	29848	29834	29850	29852	29852	29865	29852	29871	29867	29864	29852	29854	29855	29851	29851
15	29829	29854	29851	29853	29853	29854	29851	29873	29871	29858	29852	29854	29856	29852	29855
16	29827	29853	29853	29852	29851	29864	29851	29871	29855	29853	29853	29856	29854	29857	29856
17	29863	29862	29858	29852	29853	29854	29851	29873	29852	29853	29853	29856	29858	29852	29853
18	29859	29834	29861	29852	29852	29854	29875	29868	29867	29854	29853	29855	29852	29872	29855
19	29845	29852	29861	29851	29852	29863	29870	29867	29868	29854	29853	29854	29856	29851	29852
20	29825	29852	29852	29852	29852	29855	29852	29873	29869	29853	29853	29857	29858	29853	29852
21	29825	29852	29852	29853	29851	29853	29851	29869	29870	29853	29852	29854	29857	29851	29852
22	29829	29853	29864	29853	29850	29854	29872	29871	29867	29853	29852	29856	29854	29852	29854
23	29820	29853	29854	29850	29854	29855	29872	29872	29857	29853	29852	29856	29858	29851	29851
25	29828	29853	29854	29854	29853	29854	29872	29870	29865	29853	29853	29857	29856	29853	29870
30	29830	29853	29854	29852	29851	29854	29875	29867	29871	29868	29853	29856	29857	29850	29851
40	29828	29853	29854	29852	29852	29853	29877	29870	29872	29854	29852	29856	29855	29851	29853

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	29843 bytes	–	100%
1,000	29829 bytes	-14 bytes	100%
10,000	29825 bytes	-4 bytes	100%
100,000	29823 bytes	-2 bytes	1.45%
1,000,000	29820 bytes	-3 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)	29935 bytes	+115 bytes (+0.39%)	–
1	29936 bytes	+116 bytes (+0.39%)	+1 byte
2	29958 bytes	+138 bytes (+0.46%)	+23 bytes
3	29965 bytes	+145 bytes (+0.49%)	+30 bytes
4	29946 bytes	+126 bytes (+0.42%)	+11 bytes
5	29970 bytes	+150 bytes (+0.50%)	+35 bytes
6	30002 bytes	+182 bytes (+0.61%)	+67 bytes
7	30034 bytes	+214 bytes (+0.72%)	+99 bytes
8	30055 bytes	+235 bytes (+0.79%)	+120 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	24450 bytes	-5370 bytes (-18.01%)
RAR (proprietary)	RAR	rar a -m5 -md64m -mc63:128t -mt1	25248 bytes	-4572 bytes (-15.33%)
PPMd (Wikipedia)	7zip	7za a -mx=9 -m0=ppmd	26315 bytes	-3505 bytes (-11.75%)
Brotli (Wikipedia)	brotli	brotli -q 11	27753 bytes	-2067 bytes (-6.93%)
Burrows-Wheeler transform (Wikipedia)	bzip2	bzip2 -9	28297 bytes	-1523 bytes (-5.11%)
LZMA2 (Wikipedia)	xz	xz -9	28544 bytes	-1276 bytes (-4.28%)
Zstandard (Wikipedia)	zstd	zstd -19	29299 bytes	-521 bytes (-1.75%)

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.