Choose a version:
26% The original file has 633465 bytes (618.6k) and is available from the project website.
There you can find the official minified version, too, which brings down the size to 165884 bytes (162.0k, 26%).

After GZIP compression these minified files vary in size:
gzip -6 (default)
  55950 bytes (54.6k)
local copy
gzip -9
  55902 bytes (54.6k)
local copy
libdeflate -12
  53256 bytes (52.0k)
local copy
7zip -mx=9 -tgzip
  53232 bytes (52.0k)
local copy
pigz -11 -n
  53163 bytes (51.9k)
local copy
zultra
  53159 bytes (51.9k)
local copy
kzip -s0 -rn -b1
  53158 bytes (51.9k)
local copy
Zopfli
  53065 bytes (51.8k)
local copy
Zopfli (defluff)
  53063 bytes (51.8k)
local copy

perma-link to the smallest file on my server:
http://minime.stephan-brumme.com/files/dojo/dojo-1.11.10.min.js (or via HTTPS)

You will automatically get the smallest Dojo 1.11.10 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

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 --mls128 --bsr11 --lazy --ohh

(found March 14, 2022)
Description Value Parameter
iterations 1000000  --i1000000
maximum blocks 8  --mb8
maximum length score 128  --mls128
block splitting recursion 11  --bsr11
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 2 more bytes (53063 bytes).

Verify file integrity

After decompression, my uncompressed files are identical to the original ones:

MD5:
curl --silent --compressed https://download.dojotoolkit.org/release-1.11.10/dojo.js --location | md5sum
734c7b2ba14e0c2ea6bd3044356b28a8  -
curl --silent --compressed https://minime.stephan-brumme.com/files/dojo/dojo-1.11.10.min.zopfli.js.gz | md5sum
734c7b2ba14e0c2ea6bd3044356b28a8  -

SHA1:
curl --silent --compressed https://download.dojotoolkit.org/release-1.11.10/dojo.js --location | sha1sum
7b6ed888c270cdf77ab2b84303f128ebbd64a233  -
curl --silent --compressed https://minime.stephan-brumme.com/files/dojo/dojo-1.11.10.min.zopfli.js.gz | sha1sum
7b6ed888c270cdf77ab2b84303f128ebbd64a233  -

Other Versions

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

1.17.2, 1.17.1, 1.17.0,
1.16.5, 1.16.4, 1.16.3, 1.16.2, 1.16.1, 1.16.0,
1.15.6, 1.15.5, 1.15.4, 1.15.3, 1.15.2, 1.15.1, 1.15.0,
1.14.9, 1.14.8, 1.14.7, 1.14.6, 1.14.5, 1.14.4, 1.14.3, 1.14.2, 1.14.1, 1.14.0,
1.13.10, 1.13.9, 1.13.8, 1.13.7, 1.13.6, 1.13.5, 1.13.4, 1.13.3, 1.13.2, 1.13.1, 1.13.0,
1.12.11, 1.12.10, 1.12.9, 1.12.8, 1.12.7, 1.12.6, 1.12.5, 1.12.4, 1.12.3, 1.12.2, 1.12.1,
1.11.13, 1.11.12, 1.11.11, 1.11.10, 1.11.9, 1.11.8, 1.11.7, 1.11.6, 1.11.5, 1.11.4, 1.11.3, 1.11.2, 1.11.1, 1.11.0,
1.10.10, 1.10.9, 1.10.8, 1.10.7, 1.10.6, 1.10.5, 1.10.4, 1.10.3, 1.10.2, 1.10.1, 1.10.0,
1.9.11, 1.9.10, 1.9.9, 1.9.8, 1.9.7, 1.9.6, 1.9.5, 1.9.4, 1.9.3, 1.9.2, 1.9.1, 1.9.0,
1.8.14, 1.8.13, 1.8.12, 1.8.11, 1.8.10, 1.8.9, 1.8.8, 1.8.7, 1.8.6, 1.8.5, 1.8.4, 1.8.3, 1.8.2, 1.8.1, 1.8.0,
1.7.12, 1.7.11, 1.7.10, 1.7.9, 1.7.8, 1.7.7, 1.7.6, 1.7.5, 1.7.4, 1.7.3, 1.7.2, 1.7.1, 1.7.0,
1.6.5, 1.6.4, 1.6.3, 1.6.2, 1.6.1, 1.6.0,
1.5.6, 1.5.5, 1.5.4, 1.5.3, 1.5.2, 1.5.1, 1.5.0,
1.4.8, 1.4.7, 1.4.6, 1.4.5, 1.4.4, 1.4.3, 1.4.2, 1.4.1, 1.4.0,
1.3.3, 1.3.2, 1.3.1, 1.3.0,
1.2.3, 1.2.2

The project site contains an overview how well these versions were compressed.
Other interesting projects are AngularJS, BackboneJS, Bootstrap, D3, Ember, jQuery, Knockout, lodash, React, Socket.IO, ThreeJS, UnderscoreJS and Vue.

Changelog

Best Zopfli parameters so far:
Size Improvement Parameters Found
53065 bytes -2 bytes zopfli --i1000000 --mls128 --bsr11 --lazy --ohh March 14, 2022 @ 18:05
53067 bytes -5 bytes zopfli --i100000 --mls128 --bsr12 --lazy --ohh March 4, 2022 @ 11:57
53072 bytes -1 byte zopfli --i10000 --mls128 --bsr12 --lazy --ohh February 27, 2022 @ 18:43
53073 bytes -1 byte zopfli --i10000 --mls128 --bsr14 --lazy --ohh February 26, 2022 @ 15:21
53074 bytes -2 bytes zopfli --i10000 --mls4 --bsr15 --lazy --ohh February 25, 2022 @ 09:52
53076 bytes -2 bytes zopfli --i10000 --mls2 --bsr16 --lazy --ohh February 25, 2022 @ 07:42
53078 bytes -1 byte zopfli --i1000 --mls4 --bsr18 --lazy --ohh February 24, 2022 @ 19:40
53079 bytes -1 byte zopfli --i1000 --mls16 --bsr40 --lazy --ohh February 24, 2022 @ 17:17
53080 bytes zopfli --i100 --mls4 --bsr9 --lazy --ohh February 24, 2022 @ 15:54

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

Most recent activity on March 15, 2022 @ 09:44.

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
53076 53076 53077 53078 53078 53079 53078 53078 53079 53078 53087 53079 53088 53104 53088
53094 53075 53076 53076 53088 53081 53078 53076 53081 53086 53081 53086 53086 53091 53085
53108 53076 53074 53076 53084 53075 53076 53078 53084 53089 53082 53083 53086 53080 53085
53111 53073 53113 53077 53074 53074 53073 53083 53083 53078 53088 53086 53085 53096 53085
53073 53070 53073 53077 53087 53074 53073 53076 53084 53091 53087 53077 53088 53088 53090
53088 53073 53076 53081 53110 53078 53073 53077 53083 53087 53087 53076 53089 53087 53085
53074 53074 53074 53111 53091 53074 53089 53076 53082 53087 53089 53077 53090 53089 53084
53110 53073 53073 53077 53080 53078 53065 53074 53084 53086 53087 53087 53085 53093 53084
53076 53075 53075 53077 53109 53079 53065 53077 53084 53086 53078 53087 53083 53088 53090
53107 53075 53076 53075 53095 53079 53070 53075 53084 53087 53088 53076 53085 53085 53084
53074 53075 53070 53077 53080 53078 53073 53078 53083 53087 53088 53086 53085 53089 53083
53109 53074 53070 53077 53080 53077 53070 53084 53083 53086 53100 53086 53084 53097 53084
53076 53074 53073 53074 53074 53079 53075 53084 53084 53086 53082 53077 53084 53089 53084
53074 53073 53078 53075 53075 53077 53073 53082 53084 53099 53086 53076 53087 53088 53092
53110 53073 53073 53078 53074 53073 53073 53083 53084 53086 53100 53087 53083 53088 53088
53110 53073 53077 53076 53090 53079 53073 53076 53083 53099 53086 53078 53085 53090 53087
53111 53074 53075 53077 53088 53074 53074 53082 53083 53087 53082 53085 53086 53095 53085
53110 53073 53075 53075 53106 53075 53073 53075 53084 53099 53078 53078 53085 53089 53088
53111 53073 53076 53077 53079 53074 53073 53083 53083 53086 53082 53086 53084 53096 53084
53110 53075 53074 53076 53078 53079 53075 53084 53082 53087 53088 53079 53084 53094 53083
53108 53070 53074 53076 53074 53075 53074 53083 53084 53097 53082 53079 53089 53086 53086
53103 53074 53077 53077 53081 53074 53074 53077 53086 53085 53100 53077 53085 53095 53083
53106 53070 53069 53074 53076 53074 53074 53083 53083 53085 53088 53086 53088 53089 53092

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 53080 bytes 100%
1,000 53078 bytes -2 bytes 100%
10,000 53072 bytes -6 bytes 100%
100,000 53067 bytes -5 bytes 2.90%
1,000,000 53065 bytes -2 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
53220 bytes +155 bytes (+0.29%) +62 bytes
53158 bytes +93 bytes (+0.18%)
53178 bytes +113 bytes (+0.21%) +20 bytes
53216 bytes +151 bytes (+0.28%) +58 bytes
53222 bytes +157 bytes (+0.30%) +64 bytes
53268 bytes +203 bytes (+0.38%) +110 bytes
53282 bytes +217 bytes (+0.41%) +124 bytes
53355 bytes +290 bytes (+0.55%) +197 bytes
53352 bytes +287 bytes (+0.54%) +194 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 38996 bytes -14069 bytes (-26.51%)
RAR (proprietary) RAR rar a -m5 -md64m -mc63:128t -mt1 46552 bytes -6513 bytes (-12.27%)
PPMd (Wikipedia) 7zip 7za a -mx=9 -m0=ppmd 47430 bytes -5635 bytes (-10.62%)
Brotli (Wikipedia) brotli brotli -q 11 48970 bytes -4095 bytes (-7.72%)
LZMA2 (Wikipedia) xz xz -9 50060 bytes -3005 bytes (-5.66%)
Zstandard (Wikipedia) zstd zstd -19 51389 bytes -1676 bytes (-3.16%)
Burrows-Wheeler transform (Wikipedia) bzip2 bzip2 -9 51722 bytes -1343 bytes (-2.53%)

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 2022.
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.