Choose a version:
31% The original file has 244087 bytes (238.4k) and is available from the project website.
There you can find the official minified version, too, which brings down the size to 76620 bytes (74.8k, 31%).

After GZIP compression these minified files vary in size:
Boot
  31916 bytes (31.2k)
CDN
cdnjs
  28069 bytes (27.4k)
CDN
gzip -6 (default)
  27875 bytes (27.2k)
local copy
gzip -9
  27830 bytes (27.2k)
local copy
unpkg
  27830 bytes (27.2k)
CDN
jsdelivr
  27818 bytes (27.2k)
CDN
libdeflate -12
  26947 bytes (26.3k)
local copy
7zip -mx=9 -tgzip
  26929 bytes (26.3k)
local copy
kzip -s0 -rn -b0
  26899 bytes (26.3k)
local copy
pigz -11 -n
  26859 bytes (26.2k)
local copy
Zopfli
  26813 bytes (26.2k)
local copy
Zopfli (defluff)
  26812 bytes (26.2k)
local copy

perma-link to the smallest file on my server:
http://minime.stephan-brumme.com/files/vue/vue-2.2.5.min.js

You will automatically get the smallest Vue 2.2.5 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 1005 bytes by using my Vue 2.2.5 Zopfli version instead of the best available CDN (3.75% smaller than jsdelivr, 26813 vs. 27818 bytes):
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 --bsr9 --lazy --ohh

(found April 2, 2017)
Description Value Parameter
iterations 1000000  --i1000000
maximum blocks 8  --mb8
maximum length score 2  --mls2
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

Even Smaller Files Thanks To Defluff

Zopfli's output can be further optimized by the defluff tool.
In this particular case, defluff saves 1 more byte (26812 bytes).

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-2.2.5.min.js --location | md5sum
cac65b7bdb1977af254f0baffca5b926  -
curl --silent --compressed http://minime.stephan-brumme.com/files/vue/vue-2.2.5.min.zopfli.js.gz | md5sum
cac65b7bdb1977af254f0baffca5b926  -

SHA1:
curl --silent --compressed https://raw.githubusercontent.com/vuejs/vue/vue-2.2.5.min.js --location | sha1sum
26e776f8a3c642ff2d456fa1dc49f51c8f0b957b  -
curl --silent --compressed http://minime.stephan-brumme.com/files/vue/vue-2.2.5.min.zopfli.js.gz | sha1sum
26e776f8a3c642ff2d456fa1dc49f51c8f0b957b  -

All listed CDNs deliver identical contents:
CDN Size (compressed) MD5 (uncompressed) Timestamp
Boot 31916 bytes cac65b7bdb1977af254f0baffca5b926 March 31, 2017 @ 06:49
cdnjs 28069 bytes cac65b7bdb1977af254f0baffca5b926 (invalid)
unpkg 27830 bytes cac65b7bdb1977af254f0baffca5b926 March 24, 2017 @ 09:58
jsdelivr 27818 bytes cac65b7bdb1977af254f0baffca5b926 (invalid)

Note: only the MD5 hashes are shown to keep things simple.

Other Versions

Available Vue versions at minime.stephan-brumme.com:

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
26813 bytes -1 byte zopfli --i1000000 --mls2 --bsr9 --lazy --ohh April 2, 2017 @ 23:29
26814 bytes -2 bytes zopfli --i100000 --mls2 --bsr9 --lazy --ohh March 31, 2017 @ 18:46
26816 bytes -1 byte zopfli --i10000 --mls2 --bsr9 --lazy --ohh March 30, 2017 @ 21:50
26817 bytes -8 bytes zopfli --i1000 --mls2 --bsr9 --lazy --ohh March 30, 2017 @ 14:23
26825 bytes zopfli --i100 --mls2 --bsr9 --lazy --ohh March 30, 2017 @ 13:31

If there are multiple parameter sets yielding the same compressed size, only the first one found is shown.

Most recent activity on April 3, 2017 @ 09:23.

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
26858 26856 26856 26851 26839 26852 26857 26854 26840 26840 26830 26841 26839 26837 26852
26850 26840 26857 26849 26846 26850 26828 26855 26826 26828 26839 26845 26839 26833 26843
26845 26841 26834 26831 26840 26825 26830 26830 26827 26835 26820 26832 26836 26839 26838
26851 26857 26849 26818 26855 26859 26856 26856 26851 26842 26842 26836 26837 26839 26858
26855 26842 26825 26823 26826 26853 26857 26854 26851 26836 26843 26836 26836 26840 26837
26813 26849 26831 26818 26845 26839 26850 26850 26826 26842 26842 26833 26833 26841 26843
26845 26845 26842 26839 26845 26842 26848 26849 26835 26842 26844 26842 26834 26841 26838
26843 26841 26842 26844 26827 26827 26848 26850 26835 26835 26843 26843 26841 26841 26842
26843 26843 26837 26841 26836 26852 26849 26851 26827 26843 26843 26842 26836 26840 26837
26848 26841 26842 26840 26837 26828 26836 26849 26835 26842 26845 26843 26834 26842 26839
26839 26843 26837 26843 26831 26853 26856 26828 26828 26836 26842 26841 26833 26840 26839
26846 26846 26842 26837 26833 26840 26856 26856 26827 26842 26842 26842 26832 26840 26837
26839 26845 26837 26838 26838 26825 26829 26855 26827 26845 26843 26841 26839 26837 26847
26843 26841 26837 26836 26841 26856 26855 26855 26835 26836 26843 26842 26837 26829 26838
26841 26841 26839 26843 26843 26842 26837 26827 26836 26836 26842 26834 26830 26838 26840
26845 26848 26835 26837 26838 26851 26830 26836 26836 26843 26827 26841 26836 26841 26839
26843 26848 26837 26840 26828 26826 26828 26856 26832 26842 26825 26842 26835 26838 26838
26846 26839 26831 26840 26841 26853 26848 26829 26827 26842 26842 26844 26829 26837 26837
26840 26843 26837 26839 26837 26841 26850 26849 26827 26842 26843 26843 26836 26839 26841
26838 26840 26847 26835 26838 26829 26838 26827 26827 26837 26843 26845 26838 26841 26837
26844 26845 26838 26852 26831 26841 26835 26836 26827 26842 26843 26845 26835 26840 26837
26848 26842 26834 26840 26843 26839 26835 26855 26826 26842 26842 26842 26829 26839 26839
26839 26840 26838 26840 26834 26850 26837 26827 26827 26842 26842 26842 26835 26839 26836

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 26825 bytes 100%
1,000 26817 bytes -8 bytes 100%
10,000 26816 bytes -1 byte 100%
100,000 26814 bytes -2 bytes 15.65%
1,000,000 26813 bytes -1 byte 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
26899 bytes +86 bytes (+0.32%)
26903 bytes +90 bytes (+0.34%) +4 bytes
26902 bytes +89 bytes (+0.33%) +3 bytes
26909 bytes +96 bytes (+0.36%) +10 bytes
26924 bytes +111 bytes (+0.41%) +25 bytes
26913 bytes +100 bytes (+0.37%) +14 bytes
26948 bytes +135 bytes (+0.50%) +49 bytes
26980 bytes +167 bytes (+0.62%) +81 bytes
27011 bytes +198 bytes (+0.74%) +112 bytes

Non-DEFLATE Algorithms

Archivers based on completely different compression algorithms often produce superior results.
Unfortunately, browsers only support gzip compression at the moment.
Algorithm Program Parameters Size Compared To Best Zopfli
ZPAQ (Wikipedia) zpaq zpaq -method 69 22260 bytes -4553 bytes (-16.98%)
RAR (proprietary) RAR rar a -m5 -md64m -mc63:128t -mt1 22824 bytes -3989 bytes (-14.88%)
PPMd (Wikipedia) 7zip 7za a -mx=9 -m0=ppmd 23340 bytes -3473 bytes (-12.95%)
Brotli (Wikipedia) brotli brotli -q 11 24988 bytes -1825 bytes (-6.81%)
Burrows-Wheeler transform (Wikipedia) bzip2 bzip2 -9 25568 bytes -1245 bytes (-4.64%)
LZMA2 (Wikipedia) xz xz -9 25768 bytes -1045 bytes (-3.90%)
ZSTD (Wikipedia) zstd zstd -19 26396 bytes -417 bytes (-1.56%)

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):


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 2018.
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