Vue 2.5.10 - as small as it gets (near-perfect GZIP compression)

Choose a version:

The original file has 283925 bytes (277.3k) and is available from the project website.
There you can find the official minified version, too, which brings down the size to 86531 bytes (84.5k, 30%).

After GZIP compression these minified files vary in size:

Boot	36218 bytes (35.4k)	CDN
cdnjs	31850 bytes (31.1k)	CDN
gzip -6 (default)	31669 bytes (30.9k)	local copy
unpkg	31646 bytes (30.9k)	CDN
gzip -9	31615 bytes (30.9k)	local copy
libdeflate -12	30635 bytes (29.9k)	local copy
7zip -mx=9 -tgzip	30592 bytes (29.9k)	local copy
kzip -s0 -rn -b0	30582 bytes (29.9k)	local copy
zultra	30559 bytes (29.8k)	local copy
pigz -11 -n	30536 bytes (29.8k)	local copy
Zopfli	30501 bytes (29.8k)	local copy

perma-link to the smallest file on my server:
http://minime.stephan-brumme.com/files/vue/vue-2.5.10.min.js (or via HTTPS)

You will automatically get the smallest Vue 2.5.10 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 1145 bytes by using my Vue 2.5.10 Zopfli version instead of the best available CDN (3.75% smaller than unpkg, 30501 vs. 31646 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 --mls2048 --bsr9 --lazy --ohh

(found December 14, 2017)

Description	Value	Parameter
iterations	1000000	--i1000000
maximum blocks	8	--mb8
maximum length score	2048	--mls2048
block splitting recursion	9	--bsr9
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-2.5.10.min.js --location | md5sum
b7aa30fe9c5e25e517a65819dd9aa257 -
curl --silent --compressed https://minime.stephan-brumme.com/files/vue/vue-2.5.10.min.zopfli.js.gz | md5sum
b7aa30fe9c5e25e517a65819dd9aa257 -

SHA1:
curl --silent --compressed https://raw.githubusercontent.com/vuejs/vue/vue-2.5.10.min.js --location | sha1sum
cbfd2810c69ea1256ba044c833406668fdf2a33f -
curl --silent --compressed https://minime.stephan-brumme.com/files/vue/vue-2.5.10.min.zopfli.js.gz | sha1sum
cbfd2810c69ea1256ba044c833406668fdf2a33f -

All listed CDNs deliver identical contents:

CDN	Size (compressed)	MD5 (uncompressed)	Timestamp
Boot	36218 bytes	b7aa30fe9c5e25e517a65819dd9aa257	December 20, 2017 @ 03:30
cdnjs	31850 bytes	b7aa30fe9c5e25e517a65819dd9aa257	(invalid)
unpkg	31646 bytes	b7aa30fe9c5e25e517a65819dd9aa257	(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
30501 bytes	-1 byte	zopfli --i1000000 --mls2048 --bsr9 --lazy --ohh	December 14, 2017 @ 11:33
30502 bytes	-1 byte	zopfli --i100000 --mls256 --bsr16 --lazy --ohh	December 13, 2017 @ 18:58
30503 bytes	-2 bytes	zopfli --i10000 --mls8 --bsr30 --lazy --ohh	December 13, 2017 @ 18:57
30505 bytes	-6 bytes	zopfli --i10000 --mls256 --bsr16 --lazy --ohh	December 13, 2017 @ 18:33
30511 bytes	-1 byte	zopfli --i1000 --mls256 --bsr16 --lazy --ohh	December 13, 2017 @ 18:29
30512 bytes	-1 byte	zopfli --i1000 --mls16384 --bsr25 --lazy --ohh	December 13, 2017 @ 18:29
30513 bytes	-3 bytes	zopfli --i1000 --mls8192 --bsr2 --lazy --ohh	December 13, 2017 @ 18:29
30516 bytes	–	zopfli --i100 --mls8192 --bsr2 --lazy --ohh	December 13, 2017 @ 18:19

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 @ 12:53.

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	30542	30540	30527	30525	30533	30525	30527	30511	30539	30532	30508	30513	30508	30519	30533
4	30512	30511	30512	30512	30508	30509	30527	30511	30534	30505	30510	30511	30514	30513	30515
6	30507	30517	30511	30511	30506	30510	30506	30516	30505	30508	30517	30507	30511	30506	30518
7	30526	30531	30528	30508	30507	30508	30507	30506	30506	30506	30506	30509	30511	30518	30508
8	30510	30511	30515	30519	30527	30512	30504	30506	30508	30508	30516	30510	30509	30508	30535
9	30525	30529	30525	30532	30509	30510	30507	30511	30509	30512	30501	30529	30539	30509	30508
10	30507	30532	30511	30509	30509	30508	30505	30505	30507	30509	30513	30511	30508	30508	30506
11	30507	30517	30507	30511	30507	30507	30524	30509	30508	30509	30505	30508	30508	30508	30517
12	30507	30510	30514	30508	30507	30506	30505	30509	30508	30506	30506	30505	30519	30509	30513
13	30515	30505	30513	30511	30508	30507	30505	30509	30506	30509	30506	30508	30509	30516	30518
14	30517	30515	30516	30510	30523	30510	30506	30509	30505	30507	30516	30508	30507	30508	30509
15	30510	30530	30513	30508	30507	30510	30507	30508	30506	30506	30506	30507	30511	30508	30519
16	30505	30509	30513	30512	30509	30511	30507	30501	30506	30509	30512	30530	30516	30520	30506
17	30507	30532	30511	30504	30508	30511	30524	30509	30507	30510	30517	30510	30510	30510	30508
18	30526	30525	30513	30528	30507	30507	30507	30509	30503	30508	30517	30510	30511	30509	30510
19	30510	30525	30525	30528	30508	30507	30508	30506	30503	30506	30509	30510	30508	30518	30511
20	30512	30512	30514	30530	30508	30507	30509	30509	30509	30508	30506	30508	30508	30508	30517
21	30506	30508	30520	30506	30508	30509	30505	30507	30505	30509	30512	30510	30511	30509	30509
22	30507	30509	30527	30505	30510	30510	30508	30506	30507	30510	30506	30508	30510	30507	30509
23	30508	30510	30514	30506	30509	30510	30508	30510	30508	30509	30506	30527	30511	30516	30513
25	30526	30524	30513	30504	30507	30511	30509	30504	30505	30510	30507	30510	30517	30506	30508
30	30510	30515	30503	30511	30507	30507	30506	30508	30508	30505	30516	30508	30537	30505	30508
40	30507	30519	30513	30506	30508	30507	30510	30509	30506	30505	30505	30529	30508	30513	30507

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	30516 bytes	–	100%
1,000	30511 bytes	-5 bytes	100%
10,000	30502 bytes	-9 bytes	100%
100,000	30502 bytes	–	0.87%
1,000,000	30501 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)	30582 bytes	+81 bytes (+0.27%)	–
1	30586 bytes	+85 bytes (+0.28%)	+4 bytes
2	30608 bytes	+107 bytes (+0.35%)	+26 bytes
3	30583 bytes	+82 bytes (+0.27%)	+1 byte
4	30602 bytes	+101 bytes (+0.33%)	+20 bytes
5	30628 bytes	+127 bytes (+0.42%)	+46 bytes
6	30665 bytes	+164 bytes (+0.54%)	+83 bytes
7	30690 bytes	+189 bytes (+0.62%)	+108 bytes
8	30719 bytes	+218 bytes (+0.71%)	+137 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	24957 bytes	-5544 bytes (-18.18%)
RAR (proprietary)	RAR	rar a -m5 -md64m -mc63:128t -mt1	25823 bytes	-4678 bytes (-15.34%)
PPMd (Wikipedia)	7zip	7za a -mx=9 -m0=ppmd	26900 bytes	-3601 bytes (-11.81%)
Brotli (Wikipedia)	brotli	brotli -q 11	28406 bytes	-2095 bytes (-6.87%)
Burrows-Wheeler transform (Wikipedia)	bzip2	bzip2 -9	28960 bytes	-1541 bytes (-5.05%)
LZMA2 (Wikipedia)	xz	xz -9	29136 bytes	-1365 bytes (-4.48%)
Zstandard (Wikipedia)	zstd	zstd -19	29935 bytes	-566 bytes (-1.86%)

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.