Choose a version:
28% The original file has 267661 bytes (261.4k) and is available from the project website.
There you can find the official minified version, too, which brings down the size to 75359 bytes (73.6k, 28%).

After GZIP compression these minified files vary in size:
Boot
  30333 bytes (29.6k)
CDN, direct link
cdnjs
  26199 bytes (25.6k)
CDN, direct link
gzip -6 (default)
  25995 bytes (25.4k)
local copy
jsdelivr
  25908 bytes (25.3k)
CDN, direct link
gzip -9
  25889 bytes (25.3k)
local copy
unpkg
  25884 bytes (25.3k)
CDN, direct link
libdeflate -12
  25074 bytes (24.5k)
local copy
7zip -mx=9 -tgzip
  25044 bytes (24.5k)
local copy
kzip -s0 -rn -b4
  25013 bytes (24.4k)
local copy
pigz -11 -n
  24980 bytes (24.4k)
local copy
Zopfli
  24950 bytes (24.4k)
local copy

perma-link to the smallest file on my server:
http://minime.stephan-brumme.com/files/vue/vue-1.0.21.min.js

You will automatically get the smallest Vue 1.0.21 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 934 bytes by using my Vue 1.0.21 Zopfli version instead of the best available CDN (3.74% smaller than unpkg, 24950 vs. 25884 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 --i100000 --mb8 --mls4 --bsr4 --lazy --ohh

(found April 10, 2017)
Description Value Parameter
iterations 100000  --i100000
maximum blocks 8  --mb8
maximum length score 4  --mls4
block splitting recursion 4  --bsr4
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-1.0.21.min.js --location | md5sum
f44ec077e166638e9be9345b8b9b35eb  -
curl --silent --compressed http://minime.stephan-brumme.com/files/vue/vue-1.0.21.min.zopfli.js.gz | md5sum
f44ec077e166638e9be9345b8b9b35eb  -

SHA1:
curl --silent --compressed https://raw.githubusercontent.com/vuejs/vue/vue-1.0.21.min.js --location | sha1sum
aac7b00b3f0a7c7a4c37a53ac1d7a05368810074  -
curl --silent --compressed http://minime.stephan-brumme.com/files/vue/vue-1.0.21.min.zopfli.js.gz | sha1sum
aac7b00b3f0a7c7a4c37a53ac1d7a05368810074  -

All listed CDNs deliver identical contents:
CDN Size (compressed) MD5 (uncompressed) Timestamp
Boot 30333 bytes f44ec077e166638e9be9345b8b9b35eb (invalid)
cdnjs 26199 bytes f44ec077e166638e9be9345b8b9b35eb (invalid)
jsdelivr 25908 bytes f44ec077e166638e9be9345b8b9b35eb (invalid)
unpkg 25884 bytes f44ec077e166638e9be9345b8b9b35eb April 6, 2017 @ 17:24

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

Other Versions

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

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
24950 bytes -1 byte zopfli --i100000 --mls4 --bsr4 --lazy --ohh April 10, 2017 @ 13:01
24951 bytes -4 bytes zopfli --i10000 --mls4 --bsr4 --lazy --ohh April 7, 2017 @ 05:15
24955 bytes -1 byte zopfli --i1000 --mls4 --bsr4 --lazy --ohh April 6, 2017 @ 19:24
24956 bytes -1 byte zopfli --i1000 --mls256 --bsr20 --lazy --ohh April 6, 2017 @ 19:12
24957 bytes -2 bytes zopfli --i1000 --mls128 --bsr14 --lazy --ohh April 6, 2017 @ 19:05
24959 bytes -4 bytes zopfli --i1000 --mls128 --bsr17 --lazy --ohh April 6, 2017 @ 19:01
24963 bytes -4 bytes zopfli --i1000 --mls16 --bsr4 --lazy --ohh April 6, 2017 @ 19:00
24967 bytes zopfli --i100 --mls64 --bsr14 --lazy --ohh April 6, 2017 @ 18:08

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

Most recent activity on April 11, 2017 @ 03:43.

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 or 100,000.
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
24971 24961 24960 24960 24960 24966 24958 24964 24957 24965 24964 24964 24964 24974 24974
24970 24950 24973 24960 24963 24974 24958 24972 24972 24968 24971 24972 24964 24973 24976
24973 24970 24963 24972 24972 24961 24972 24971 24972 24971 24972 24969 24971 24969 24974
24970 24973 24971 24973 24971 24971 24970 24971 24972 24968 24971 24969 24955 24975 24975
24969 24962 24972 24972 24971 24972 24957 24973 24971 24967 24966 24975 24963 24973 24974
24970 24972 24971 24959 24971 24973 24971 24973 24971 24968 24971 24961 24961 24973 24974
24969 24966 24958 24971 24970 24972 24957 24973 24971 24968 24963 24972 24971 24972 24973
24971 24966 24972 24973 24972 24971 24972 24973 24972 24968 24971 24973 24960 24971 24975
24971 24972 24972 24971 24969 24973 24972 24972 24971 24970 24971 24972 24971 24972 24973
24970 24969 24970 24971 24971 24973 24972 24972 24971 24971 24972 24969 24959 24976 24977
24962 24970 24972 24972 24971 24953 24956 24963 24971 24971 24971 24968 24968 24970 24976
24970 24969 24972 24971 24972 24971 24971 24973 24971 24968 24971 24969 24959 24968 24972
24971 24972 24970 24971 24972 24972 24956 24972 24971 24971 24971 24968 24972 24974 24975
24963 24971 24971 24971 24972 24953 24957 24964 24971 24968 24971 24970 24961 24971 24976
24970 24972 24971 24971 24971 24972 24972 24964 24974 24970 24971 24969 24962 24972 24974
24968 24971 24971 24971 24972 24973 24971 24974 24971 24971 24972 24969 24970 24973 24975
24970 24973 24976 24971 24969 24973 24957 24953 24971 24971 24971 24969 24973 24974 24971
24970 24971 24972 24971 24971 24973 24957 24965 24971 24971 24972 24969 24959 24972 24975
24963 24969 24970 24970 24970 24973 24971 24973 24973 24970 24971 24969 24972 24974 24971
24970 24969 24973 24970 24971 24972 24971 24972 24971 24972 24971 24971 24970 24974 24975
24969 24969 24969 24971 24971 24973 24971 24964 24971 24970 24971 24968 24970 24974 24977
24967 24969 24971 24971 24971 24970 24971 24973 24971 24971 24971 24965 24960 24974 24976
24970 24962 24972 24960 24971 24972 24971 24972 24971 24972 24971 24971 24961 24975 24975

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 24967 bytes 100%
1,000 24955 bytes -12 bytes 100%
10,000 24951 bytes -4 bytes 100%
100,000 24950 bytes -1 byte 2.32%
1,000,000
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
25032 bytes +82 bytes (+0.33%) +19 bytes
25032 bytes +82 bytes (+0.33%) +19 bytes
25029 bytes +79 bytes (+0.32%) +16 bytes
25024 bytes +74 bytes (+0.30%) +11 bytes
25013 bytes +63 bytes (+0.25%)
25045 bytes +95 bytes (+0.38%) +32 bytes
25075 bytes +125 bytes (+0.50%) +62 bytes
25103 bytes +153 bytes (+0.61%) +90 bytes
25130 bytes +180 bytes (+0.72%) +117 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 20661 bytes -4289 bytes (-17.19%)
RAR (proprietary) RAR rar a -m5 -md64m -mc63:128t -mt1 21071 bytes -3879 bytes (-15.55%)
PPMd (Wikipedia) 7zip 7za a -mx=9 -m0=ppmd 21973 bytes -2977 bytes (-11.93%)
Brotli (Wikipedia) brotli brotli -q 11 23310 bytes -1640 bytes (-6.57%)
Burrows-Wheeler transform (Wikipedia) bzip2 bzip2 -9 23643 bytes -1307 bytes (-5.24%)
LZMA2 (Wikipedia) xz xz -9 24144 bytes -806 bytes (-3.23%)
ZSTD (Wikipedia) zstd zstd -19 24657 bytes -293 bytes (-1.17%)

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 2017.
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