Choose a version:
30% The original file has 289303 bytes (282.5k) and is available from the project website.
There you can find the official minified version, too, which brings down the size to 86452 bytes (84.4k, 30%).

After GZIP compression these minified files vary in size:
cdnjs
  31837 bytes (31.1k)
CDN
gzip -6 (default)
  31658 bytes (30.9k)
local copy
gzip -9
  31603 bytes (30.9k)
local copy
unpkg
  31563 bytes (30.8k)
CDN
libdeflate -12
  30542 bytes (29.8k)
local copy
7zip -mx=9 -tgzip
  30513 bytes (29.8k)
local copy
kzip -s0 -rn -b0
  30509 bytes (29.8k)
local copy
pigz -11 -n
  30445 bytes (29.7k)
local copy
Zopfli
  30396 bytes (29.7k)
local copy

perma-link to the smallest file on my server:
http://minime.stephan-brumme.com/files/vue/vue-2.5.17.min.js (or via HTTPS)

You will automatically get the smallest Vue 2.5.17 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 1167 bytes by using my Vue 2.5.17 Zopfli version instead of the best available CDN (3.84% smaller than unpkg, 30396 vs. 31563 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 --mls4 --bsr14 --lazy --ohh

(found August 3, 2018)
Description Value Parameter
iterations 1000000  --i1000000
maximum blocks 8  --mb8
maximum length score 4  --mls4
block splitting recursion 14  --bsr14
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-2.5.17.min.js --location | md5sum
be4c25a10b8ae99067f58011f992adba  -
curl --silent --compressed https://minime.stephan-brumme.com/files/vue/vue-2.5.17.min.zopfli.js.gz | md5sum
be4c25a10b8ae99067f58011f992adba  -

SHA1:
curl --silent --compressed https://raw.githubusercontent.com/vuejs/vue/vue-2.5.17.min.js --location | sha1sum
4ad5cf8ea6ce4aba9eed41e2b330d362e74803f8  -
curl --silent --compressed https://minime.stephan-brumme.com/files/vue/vue-2.5.17.min.zopfli.js.gz | sha1sum
4ad5cf8ea6ce4aba9eed41e2b330d362e74803f8  -

All listed CDNs deliver identical contents:
CDN Size (compressed) MD5 (uncompressed) Timestamp
cdnjs 31837 bytes be4c25a10b8ae99067f58011f992adba (invalid)
unpkg 31563 bytes be4c25a10b8ae99067f58011f992adba (invalid)

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

Other Versions

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

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
30396 bytes -4 bytes zopfli --i1000000 --mls4 --bsr14 --lazy --ohh August 3, 2018 @ 23:59
30400 bytes -3 bytes zopfli --i100000 --mls4 --bsr14 --lazy --ohh August 3, 2018 @ 17:04
30403 bytes -1 byte zopfli --i10000 --mls4 --bsr14 --lazy --ohh August 3, 2018 @ 16:28
30404 bytes -1 byte zopfli --i10000 --mls4 --bsr16 --lazy --ohh August 3, 2018 @ 16:18
30405 bytes -2 bytes zopfli --i10000 --mls32 --bsr4 --lazy --ohh August 3, 2018 @ 16:06
30407 bytes -4 bytes zopfli --i1000 --mls4 --bsr14 --lazy --ohh August 3, 2018 @ 15:10
30411 bytes -2 bytes zopfli --i1000 --mls4 --bsr4 --lazy --ohh August 3, 2018 @ 15:09
30413 bytes zopfli --i100 --mls4 --bsr4 --lazy --ohh August 3, 2018 @ 14:50

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

Most recent activity on August 4, 2018 @ 00:35.

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
30451 30451 30447 30425 30428 30434 30449 30426 30425 30432 30432 30433 30425 30435 30437
30439 30406 30406 30402 30401 30433 30419 30434 30434 30435 30432 30432 30432 30441 30432
30436 30429 30412 30442 30435 30431 30434 30416 30419 30427 30434 30440 30437 30442 30435
30440 30439 30439 30432 30431 30429 30433 30433 30431 30429 30426 30429 30433 30442 30433
30437 30430 30432 30433 30442 30428 30430 30416 30431 30432 30427 30430 30432 30445 30434
30439 30441 30413 30432 30431 30411 30430 30431 30419 30431 30427 30438 30420 30442 30435
30435 30432 30430 30440 30441 30434 30422 30414 30430 30431 30426 30429 30431 30433 30435
30433 30407 30428 30441 30442 30430 30432 30431 30432 30432 30427 30434 30431 30432 30433
30434 30427 30430 30440 30431 30430 30432 30419 30418 30430 30426 30434 30420 30446 30433
30427 30427 30429 30441 30410 30427 30428 30417 30431 30432 30426 30440 30425 30442 30434
30439 30396 30440 30431 30432 30428 30416 30417 30435 30432 30427 30431 30418 30443 30431
30440 30429 30440 30431 30430 30413 30427 30429 30419 30435 30429 30429 30431 30442 30432
30437 30403 30441 30441 30431 30428 30429 30429 30434 30429 30427 30440 30428 30445 30434
30438 30432 30410 30430 30431 30428 30422 30429 30430 30431 30427 30434 30429 30445 30436
30432 30429 30411 30411 30431 30428 30416 30436 30417 30433 30426 30440 30429 30444 30433
30426 30427 30428 30441 30431 30432 30428 30430 30420 30432 30426 30428 30420 30432 30434
30437 30430 30427 30439 30444 30429 30416 30430 30416 30430 30426 30430 30423 30445 30436
30440 30440 30441 30440 30432 30430 30418 30417 30418 30429 30427 30434 30425 30445 30434
30427 30429 30409 30441 30431 30434 30428 30415 30418 30432 30426 30430 30432 30446 30434
30437 30429 30439 30440 30443 30432 30430 30431 30430 30433 30426 30440 30433 30445 30433
30427 30430 30427 30441 30441 30428 30429 30429 30417 30430 30427 30430 30410 30446 30433
30435 30439 30428 30430 30430 30429 30426 30431 30418 30432 30426 30440 30433 30445 30437
30440 30433 30419 30412 30431 30428 30426 30430 30420 30429 30427 30439 30433 30432 30429

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 30413 bytes 100%
1,000 30407 bytes -6 bytes 100%
10,000 30403 bytes -4 bytes 100%
100,000 30400 bytes -3 bytes 1.16%
1,000,000 30396 bytes -4 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
30509 bytes +113 bytes (+0.37%)
30511 bytes +115 bytes (+0.38%) +2 bytes
30515 bytes +119 bytes (+0.39%) +6 bytes
30528 bytes +132 bytes (+0.43%) +19 bytes
30548 bytes +152 bytes (+0.50%) +39 bytes
30580 bytes +184 bytes (+0.61%) +71 bytes
30586 bytes +190 bytes (+0.63%) +77 bytes
30544 bytes +148 bytes (+0.49%) +35 bytes
30572 bytes +176 bytes (+0.58%) +63 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 25230 bytes -5166 bytes (-17.00%)
RAR (proprietary) RAR rar a -m5 -md64m -mc63:128t -mt1 26032 bytes -4364 bytes (-14.36%)
PPMd (Wikipedia) 7zip 7za a -mx=9 -m0=ppmd 26877 bytes -3519 bytes (-11.58%)
Brotli (Wikipedia) brotli brotli -q 11 28623 bytes -1773 bytes (-5.83%)
Burrows-Wheeler transform (Wikipedia) bzip2 bzip2 -9 29150 bytes -1246 bytes (-4.10%)
LZMA2 (Wikipedia) xz xz -9 29396 bytes -1000 bytes (-3.29%)
Zstandard (Wikipedia) zstd zstd -19 29985 bytes -411 bytes (-1.35%)

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