zakird/wkhtmltopdf_binary_gem

Ruby gem containing easily installable access to wkhtmltopdf application

Installation and usage

Install in your Gemfile as usual

gem 'wkhtmltopdf-binary'

In many environments, this is all you need to do. This gem installs a binary stub that tries to determine which wkhtmltopdf binary will work on your system, and point to the packaged binary that most closely matches.

In some environments, invoking this binary will result in an error, saying the needed permissions are not available. This is because wkhtmltopdf-binary ships with gzipped binaries for many platforms, and then picks the appropriate one upon first use and unzips it into the same directory. So if your ruby gem binaries are installed here:

/usr/lib/ruby/versions/2.6/bin/

The various wkhtmltopdf-binaries will be installed here:

/usr/lib/ruby/versions/2.6/lib/ruby/gems/2.6.0/gems/wkhtmltopdf-binary-0.12.5.1/bin/

Giving write access whatever user is running your program (e.g. web server, background job processor), e.g. your own personal user in a dev environment, will fix the problem. After the binary is uncompressed, write access can be revoked again if desired.

chmod -R 777 /usr/lib/ruby/versions/2.6/lib/ruby/gems/2.6.0/gems/wkhtmltopdf-binary-0.12.5.1/bin/

Gem Development

Extracting binaries

Hints for extracting binaries from https://wkhtmltopdf.org/downloads.html (dpkg and rpm2cpio is available on Homebrew).

Debian/Ubuntu

dpkg -x wkhtmltox_0.12.5-1.trusty_amd64.deb .

CentOS

rpm2cpio wkhtmltox-0.12.5-1.centos7.x86_64.rpm | cpio -idmv

Archlinux/manjaro

tar -xf wkhtmltox-0.12.6-1.archlinux.x86_64.tar.xz

macOS

xar -xf wkhtmltox-0.12.5-1.macos-cocoa.pkg
cat Payload | gunzip -dc | cpio -i

Compression

Binaries should be compressed with gzip --best after extracting. The matching binary will be extracted on first execution of bin/wkhtmltopdf.

Hints for compressing binaries

Debian/Ubuntu user/local/bin refers to the extracted binaries directory gzip --best -c usr/local/bin/wkhtmltopdf > wkhtmltopdf_ubuntu_22.04.amd64.gz

Testing

To execute gem tests locally, install in your OS:

• Docker
• Docker compose
• Ruby
• Bundler

Then, execute the commands below:

git clone https://github.com/zakird/wkhtmltopdf_binary_gem
cd wkhtmltopdf_binary_gem/
bundle install
bundle exec rake

wkhtmltopdf_binary_gem's Issues

ar

Missing binary for archlinux/manjaro

Missing binary forarchlinux/manjaro

Invalid platform, must be running on Ubuntu 14.04/16.04/18.04 CentOS 6/7/8, Debian 8/9/10, or intel-based macOS (missing binary: /home/yan/code/.asdf/installs/ruby/2.6.5/lib/ruby/gems/2.6.0/gems/wkhtmltopdf-binary-0.12.5.4/bin/wkhtmltopdf_manjaro__amd64

What do I need to make it work？

Missing Support for Oracle Linux 7.8

Hello!

I'm trying to install Wkhtmltopdf on an Oracle Linux 7.8 (Fedora) Docker Container. After running

yum install xvfb -y
yum install libfontconfig -y
yum install wkhtmltopdf -y

Everything install fine. But then when I got to test wkhtmltopdf with wkhtmltopdf http://google.com google.pdf I get a runtime error.

/opt/app/vendor/bundle/ruby/2.6.0/gems/wkhtmltopdf-binary-0.12.5.4/bin/wkhtmltopdf:45:in `<top (required)>': Invalid platform, must be running on Ubuntu 14.04/16.04/18.04 CentOS 6/7/8, Debian 8/9/10, or intel-based macOS (missing binary: /opt/app/vendor/bundle/ruby/2.6.0/gems/wkhtmltopdf-binary-0.12.5.4/bin/wkhtmltopdf_ol_7.8_amd64). (RuntimeError)

Details on OS

NAME="Oracle Linux Server"
VERSION="7.8"
ID="ol"
ID_LIKE="fedora"
VARIANT="Server"
VARIANT_ID="server"
VERSION_ID="7.8"
PRETTY_NAME="Oracle Linux Server 7.8"
ANSI_COLOR="0;31"
CPE_NAME="cpe:/o:oracle:linux:7:8:server"
HOME_URL="https://linux.oracle.com/"
BUG_REPORT_URL="https://bugzilla.oracle.com/"

ORACLE_BUGZILLA_PRODUCT="Oracle Linux 7"
ORACLE_BUGZILLA_PRODUCT_VERSION=7.8
ORACLE_SUPPORT_PRODUCT="Oracle Linux"
ORACLE_SUPPORT_PRODUCT_VERSION=7.8

Runtime error on Windows 7

Error is happening when render pdf: "pdf_name" is called inside the controller.

RuntimeError at /reports/1/print
Bad wkhtmltopdf's path: bundler: command not found: which
Install missing gem executables with `bundle install`

Gems I am using - rails 4.2, wkhtmltopdf-binary 0.9.9.3, wicked_pdf 0.11.0.
I have tried upgrading gem to latest version pointing to Github master branch but that doesn't help.

doesn't work on Alpine

I'm using docker image ruby:2.6.3-alpine and this gem didn't work. To work, you have to install by apk add wkhtmltopdf

How to upgrade to wkhtmltopdf 0.12.6?

@unixmonkey @zakird Hey guys!

A new release of wkhtmltopdf is out (0.12.6 -> https://github.com/wkhtmltopdf/wkhtmltopdf/releases/tag/0.12.6 ).

How to upgrade the gem to get this release? I can open a PR to contribute with it. I just need help about what steps I should follow hehe 👍 🤝

Merge forks and push to RubyGems

@michaelcollas and @unixmonkey has done some good work to the gem (amd64 support and upgraded the binaries to 0.9.9). Wouldn't it be nice to merge their work and push a new gem to RubyGems?

https://github.com/unixmonkey/wkhtmltopdf_binary_gem

Release to Rubygems

Windows platforms?

Is there any way we can make this work on Windows?
wkhtmltopdf has Windows packages. Am I missing something here?

rubygems link to source code

Can you please add a link to this repo from ruby gems to help get to this issue tracker.

Is it possible to release a version with CentOS 8 binary?

Recently was released the binary version for CentOS 8:

https://wkhtmltopdf.org/downloads.html
https://github.com/wkhtmltopdf/wkhtmltopdf/releases/download/0.12.5/wkhtmltox-0.12.5-1.centos8.x86_64.rpm
wkhtmltopdf/wkhtmltopdf#4519
wkhtmltopdf/packaging#40
wkhtmltopdf/wkhtmltopdf#4490

@unixmonkey @zakird Is it possible to release a version with CentOS 8 binary?

Can't deploy with capistrano

Hey there!

I'm having trouble using this gem with capistrano. I'm getting this error:

Bundler::GemNotFound: Could not find wkhtmltopdf-binary-0.12.5.4 in any of the sources

Any clue as to what could be causing this or a way to fix it?

Error while trying to install

Hello.

I am trying to install the gem. When I give
" gem install wkhtmltopdf_binary",
it gives me the error.
"NoMethodError: undefined method `size' for nil:NilClass" . And the installation files. Same when I try with bundler as well.

"Could not find 'wkhtmltopdf-binary'" error

I just updated my project's Gemfile to pull the latest version of this gem from GitHub. I then bundle installed, which installed the binary:

> which wkhtmltopdf
/Users/jacobevelyn/.gem/ruby/2.0.0/bin/wkhtmltopdf

However, when I try to use the binary, I get this:

> wkhtmltopdf --version
/Users/jacobevelyn/.rubies/ruby-2.0.0-p247/lib/ruby/site_ruby/2.0.0/rubygems/dependency.rb:298:in `to_specs': Could not find 'wkhtmltopdf-binary' (>= 0) among 814 total gem(s) (Gem::LoadError)
    from /Users/jacobevelyn/.rubies/ruby-2.0.0-p247/lib/ruby/site_ruby/2.0.0/rubygems/dependency.rb:309:in `to_spec'
    from /Users/jacobevelyn/.rubies/ruby-2.0.0-p247/lib/ruby/site_ruby/2.0.0/rubygems/core_ext/kernel_gem.rb:53:in `gem'
    from /Users/jacobevelyn/.gem/ruby/2.0.0/bin/wkhtmltopdf:22:in `<main>'

Any ideas as to where I might be going wrong?

Gem size 0.12.5

new version of gem much bigger than previous one

0.12.5 - November 07, 2019 (238 MB)
0.12.4 - June 11, 2018 (45.1 MB)

0.12.5 totally unreal use it on heroku

Failed to extract binary

Error: PDF could not be generated!
 Command Error: /var/lib/gems/2.5.0/gems/wkhtmltopdf-binary-0.12.5/bin/wkhtmltopdf:34:in `initialize': Permission denied @ rb_sysopen - /var/lib/gems/2.5.0/gems/wkhtmltopdf-binary-0.12.5/bin/wkhtmltopdf_ubuntu_18.04_amd64 (Errno::EACCES)

A RoR app is using wkhtmltopdf-binary to generate PDFs from a web page. It was "bundle upgrade" upgraded earlier today and I started getting this error. I was able to HACK around the error by extracting the .gz file manually:

cd /var/lib/gems/2.5.0/gems/wkhtmltopdf-binary-0.12.5/bin/
gunzip wkhtmltopdf_ubuntu_18.04_amd64.gz

I'm also going to freeze the Gemfile file for my other servers to 0.12.4.

gem 'wkhtmltopdf-binary', '0.12.4'

• I haven't tested locking the Gemfile yet.

Gem installation failing on AWS EC2 instance

I am getting following error when during my application deployment on Amazon EC2. I tired upgrading the gem version to latest: 0.9.9.3. Still the same error persists. However, I could manually install the gem on EC2 instance using gem install command. Can you please confirm that this issue is related to AWS EC2 installation scripts alone? My other gems are installing fine though.

---

Gem::RemoteFetcher::FetchError: bad response backend read error 503 (https://rubygems.global.ssl.fastly.net/gems/wkhtmltopdf-binary-0.9.9.1.gem)
An error occurred while installing wkhtmltopdf-binary (0.9.9.1), and Bundler
cannot continue.
Make sure that gem install wkhtmltopdf-binary -v '0.9.9.1' succeeds before
bundling.
ERROR: bundle install failed!

Add License (MIT)

We'd like to include the MIT license in the project.

Can a binary for ubuntu 20.04 be added?

I'm getting an error that says:

Invalid platform, must be running on Ubuntu 16.04/18.04/20.04 CentOS 6/7/8, Debian 9/10, or intel-based Cocoa macOS (missing binary: /home/johnjin0000/.rbenv/versions/2.6.5/lib/ruby/gems/2.6.0/gems/wkhtmltopdf-binary-0.12.6/bin/wkhtmltopdf_ubuntu_20.04_amd64)

But I am using an ubuntu 20.04 machine, so it would be nice if a binary for 20.04 can be added

Fillable PDFs generated from HTML form seem to stop working correctly after 0.12.3

Issue description
When generating fillable PDF from an HTML form, the fields are not editable via Adobe Acrobat in versions >0.12.3.

Expected or desired behavior
That fields are fillable in the PDF document.

System specifications
wkhtmltopdf 0.12.3 (with patched qt)

platform/distribution and version :
MacOSX 10.15.x

My current solution is to pin the version to 0.12.3.

Adding binary into pure Ruby project

I'm currently trying to make use of the wicked_pdf gem, however, I'm not using Rails. I installed the /wkhtmltopdf_binary_gem but still don't see any binary in the bin folder. Would it make sense to install this manually into bin?

I'm using PDFtk, I can maybe download the binary into the folder manually. What is suggested in this case?

I see that the path is ~/.rvm/gems/ruby-2.5.3/gems/wkhtmltopdf-binary-0.12.4/bin/wkhtmltopdf should I set the executable path to this?

Missing support for Gentoo Linux

Invalid platform, must be running on Ubuntu 14.04/16.04/18.04 CentOS 6/7/8, Debian 8/9/10, or intel-based macOS
(missing binary: /shared/bundled_gems/ruby/2.5.0/gems/wkhtmltopdf-binary-0.12.5.4/bin/wkhtmltopdf_eygl_2016.06_amd64). (RuntimeError)

cat /etc/os-release:

NAME="Engine Yard Gentoo Linux"
ID=eygl
ID_LIKE=gentoo
VERSION_ID=2016.06
BUILD_ID=2016.06.018.final
PRETTY_NAME="Engine Yard Gentoo/Linux"
ANSI_COLOR="1;32"
HOME_URL="http://www.engineyard.com/"
SUPPORT_URL="https://support.cloud.engineyard.com/"
BUG_REPORT_URL="https://support.cloud.engineyard.com/

Syntax error: word unexpected (expecting ")")

In production server (ubuntu 14.04) getting this error

$ wkhtmltopdf http://www.google.com google.pdf

/usr/local/rvm/gems/ruby-2.5.1/gems/wkhtmltopdf-binary-0.12.4/bin/wkhtmltopdf_linux_x86: 1: /usr/local/rvm/gems/ruby-2.5.1/gems/wkhtmltopdf-binary-0.12.4/bin/wkhtmltopdf_linux_x86: Syntax error: word unexpected (expecting ")")

Any help? @zakird

Not work in Alpine Linux

I'm using Docker image ruby:2.4-alpine and have installed this gem successful. I've found the binary files here /bundle/gems/wkhtmltopdf-binary-0.12.3.1/bin but when I try to cd to that path and enter ./wkhtmltopdf, and nothing to show. And I tried to change to Ubuntu (Docker image ruby:2.4) and it worked by showing Usage for wkhtmltopdf with same steps above.

Could you please suggest me what I'm wrong? Thanks!

Create README

README should explain how to install gem, and what the binary's dependencies are depending on their distribution.

Broken dependency on Heroku cedar-14 stack

Heroku moved from libjpeg62 to libjpeg8 with the new cedar-14 stack, which now breaks the binary:

wkhtmltopdf_linux_amd64: error while loading shared libraries: libjpeg.so.62: cannot open shared object file: No such file or directory

On attempt I found at solving this issue: acdcorp@d01271c

Wkhtmltopdf 0.12.5 - compile binaries

Hi, are you please able to compile binaries also for the lastest wkhtmltopdf 0.12.5 version? Thank you

Error with 0.12.6 Binary.

I'm hosting a website on PlatformSH which uses this gem to install the appropriate binary. It was updated to 0.12.6 and suddenly I got this error message:

Error generating document: Failed to generate PDF: /app/.global/gems/wkhtmltopdf-binary-0.12.6/bin/wkhtmltopdf:28:in `': undefined method `match?' for /deepin/:Regexp (NoMethodError) Did you mean? match from /app/.global/bin/wkhtmltopdf:22:in `load' from /app/.global/bin/wkhtmltopdf:22:in `'

No other code was changed apart from the binary version. I'm using a Drupal module called entity_print that uses the library phpwkhtmltopdf but the maintainer of that library did not think the issue was in that library but likely related to this gem.

Reverting to 0.12.5.4 fixed it for me.

libpng12 issues with latest linux system

It's time libpng12 can be updated to libpng16.

Update to latest version

Hi! You need to update the wkhtmltopdf binary to the latest version!

New binary is a need to install the dependent libraries

Ubuntu 14.04 64-bit

sudo apt-get install libjpeg62 libfontconfig-dev

Ubuntu 14.04 32-bit

sudo apt-get install libjpeg-dev libfontconfig-dev

CentOS 7.0

sudo yum install libjpeg libpng12 libXrender libXext fontconfig

CentOS 6.3 64-bit

sudo yum install libjpeg libpng libXrender libXext fontconfig

CentOS 6.3 32-bit

wkhtmltopdf_linux_x86 -V
#=> wkhtmltopdf_linux_x86: error while loading shared libraries: libjpeg.so.8: cannot open shared object file: No such file or directory

sudo yum install libjpeg.so.8
#=> No package libjpeg.so.8 available.

Dependent libraries for 32-bit does not exist in the standard RPM repositories of CentOS.

I've tried creating a symlink, but it doesn't work:

ln -s /usr/lib/libjpeg.so.62 /usr/lib/libjpeg.so.8

wkhtmltopdf_linux_x86 -V
#=> /path/to/wkhtmltopdf_linux_x86: /usr/lib/libjpeg.so.8: version `LIBJPEG_8.0' not found (required by /path/to/wkhtmltopdf_linux_x86)
#=> /path/to/wkhtmltopdf_linux_x86: /lib/libc.so.6: version `GLIBC_2.15' not found (required by /path/to/wkhtmltopdf_linux_x86)

Do you have a solution?

Idea: Ship `upx`-compressed executables?

Using upx on shipped wkhtmltopdf binaries drastically reduces their size. Each of the binaries (linux x86, linux x86_64, darwin x86) reduces to about 15MB. And with modern CPUs the decompression time doesn't matter - but there is less I/O involved.

Upgrade process and v1.2.2 pre release

The currently bundled version of wkhtmltopdf is v1.2.1. Since last week a lot of web hosts have disabled SSLv3 because of the POODLE attack.
wkhtmltopdf v1.2.1 (and earlier) still use SSLv3 by default. This has been changed in the current testing release (v1.2.2.testing).

I was having a look to create a patch with the updated (testing) binaries so we could use this pre version in our app right now (since we rely on assets deliverd over https with SSLv3 disabled). Is there any good way to update the bundled binaries? It seems that the osx one can be extracted from the pkg, but I have no idea how to do that for the linux binaries. One option is to start a vagrant box for each required release and extract the binary from there but would that be enough? It would be nice if there was some more information on how to udpate the binaries.

new version of gem on rubygems.org with license

Is there any chance you could build new version of the gem with the license and upload it to rubygems.org? Unfortunately I can't officially use this gem until then.

Version 0.12.5 is not in repo

The version 0.12.5 is published in rubygems ( https://rubygems.org/gems/wkhtmltopdf-binary/versions/0.12.5 ) but it is not available in Github repo ( https://github.com/zakird/wkhtmltopdf_binary_gem/releases ) 👍

Could not allocate register file

wkhtmltopdf http://www.google.com google.pdf
Loading pages (1/5)
2010-07-12 18:32:45.620 wkhtmltopdf_darwin_386[828] WARNING: _wrapRunLoopWithAutoreleasePoolHandler got kCFRunLoopExit, but there are no autorelease pools in the stack.
Could not allocate register file: 22

ruby 1.8.7 (2010-01-10 patchlevel 249) [i686-darwin8.11.1]
mac osx tiger 10.4.11

Update binaries

http://wkhtmltopdf.org/downloads.html has binaries for 0.12.3. Is a fork/pull request in order?

CHANGELOG, please

It would be nice to know what changes between two versions and at least if the version number follows semantic versioning...

Missing binary for Ubuntu 19.04

Invalid platform, must be running on Ubuntu 14.04/16.04/18.04 CentOS 6/7, Debian 8/9, or intel-based macOS (missing binary: /home/deploy/runnersconnect/shared/vendor/bundle/ruby/2.6.0/gems/wkhtmltopdf-binary-0.12.5/bin/wkhtmltopdf_ubuntu_19.04_amd64). (RuntimeError)

Had to uninstall this gem and go for manual solution.

wget https://github.com/wkhtmltopdf/wkhtmltopdf/releases/download/0.12.5/wkhtmltox_0.12.5-1.bionic_amd64.deb
sudo dpkg -i wkhtmltox_0.12.5-1.bionic_amd64.deb
sudo apt -f install

RUBY_PLATFORM on JRuby is 'java'

Currently the gem is using RUBY_PLATFORM to get the OS, so it can pick the right binary. On JRuby, this is always "java", because it's the only way we can differentiate gems for our platform:

$ jruby -e 'p RUBY_PLATFORM'
"java"

This prevents commands from working:

$ wkhtmltopdf 
RuntimeError: Invalid platform. Must be running linux or intel-based Mac OS.
  <main> at /Users/headius/projects/jruby/lib/ruby/gems/shared/gems/wkhtmltopdf-0.1.2/bin/wkhtmltopdf:8
    load at org/jruby/RubyKernel.java:1022
  <main> at /Users/headius/projects/jruby/bin/wkhtmltopdf:23

However we do support the (arguably more reliable) RbConfig::CONFIG['host_os'] which should work the same way for you:

$ jruby -e 'p RbConfig::CONFIG["host_os"]'
"darwin"

Changing the bin script to use this value instead of RUBY_PLATFORM would allow the gem to work on JRuby:

$ wkhtmltopdf ; echo $?
0

--- lib/ruby/gems/shared/gems/wkhtmltopdf-0.1.2/bin/wkhtmltopdf	2019-04-26 11:06:09.000000000 -0500
+++ lib/ruby/gems/shared/gems/wkhtmltopdf-0.1.2/bin/wkhtmltopdf-old	2019-04-26 11:05:41.000000000 -0500
@@ -1,10 +1,8 @@
 #!/usr/bin/ruby
 
-platform = RbConfig::CONFIG['host_os']
-
-if platform =~ /linux/
+if RUBY_PLATFORM =~ /linux/
   executable = 'wkhtmltopdf_linux_386'
-elsif platform =~ /darwin/
+elsif RUBY_PLATFORM =~ /darwin/
   executable = 'wkhtmltopdf_darwin_386'
 else
   raise "Invalid platform. Must be running linux or intel-based Mac OS."

👍

license blurb lines cause an error

The error in mac-os with ruby 2.0.0:

 * wkhtmltopdf_binary_gem Copyright 2013 The University of Iowa
 *
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not
 * use this file except in compliance with the License. You may obtain a copy
 * of the License at http:/
bin/wkhtmltopdf:13: unknown regexp option - l
bin/wkhtmltopdf:13: syntax error, unexpected '/', expecting :: or '[' or '.'
bin/wkhtmltopdf:15: syntax error, unexpected keyword_elsif, expecting end-of-input
elsif RbConfig::CONFIG['host_os'] =~ /darwin/

Update to Version 0.12.1

The stable release has been bumped to 0.12.1 and includes a number of important features. Is this a fairly straight-forward thing to build or is there a lot of leg-work involved?

The current release of this gem bundles 0.9.9 which dates from 2010.

How to bump binary version?

From https://wkhtmltopdf.org/downloads.html I can see that OSX version comes in 32bit and 64bit .pkg and can be extracted from it.
For linux, there are individual files for ubuntu and debian 32 and 64 bit, and I guess we can extract the binary out of one?

Can someone write a script or instructions on how to extract these?
I can help with a PR for 0.12.5

Version 0.12.5.1 is not available in Github

Dead repos ?

Do we need to use another gem or installing manually the new version ?

Thanks for your work.

Link on Project Home Page

The main project page links to gemcutter.org, but that service was shuttered and rolled in with the main Rubygems site.

Link should be: https://rubygems.org/gems/wkhtmltopdf-binary

Please add support for debian 10 (buster)

It would be nice to support Debian 10 as this is the latest stable since 6 July 2019.

This is now the default distro/version for the official ruby images >= 2.6.5 to there is likely to be high demand as people update their dependencies in the coming weeks and months.

Happy to start a pr but I assume that only the maintainer/s are trusted to commit new binary files?

nfs errors indirectly caused by wkhtmltopdf

Our nfs server has been showing errors such as this:

rpc.mountd[2538]: authenticated mount request from OurNFSserver:864 for /homesrv/kalyptorisk.com (/homesrv)
rpc.mountd[2538]: can't stat exported dir /homesrv/kalyptorisk.com: No such file or directory

coming from servers using wkhtmltopdf_binary_gem. This is most likely an upstream problem from an earlier version of https://github.com/wkhtmltopdf/wkhtmltopdf -- It looks like it has been fixed in version 0.12.4

Missing libpng12 in Amazon Linux2

Error on Amazon Linux 2.
error while loading shared libraries: libpng12.so.0: cannot open shared object file: No such file or directory

I resolved like this.

This is current code.
wkhtmltopdf_binary_gem/bin/wkhtmltopdf

           # CentOS 6 doesn't have `/etc/os-release`.
           if (os.empty? && File.read('/etc/centos-release').start_with?('CentOS release 6')) ||
               os.start_with?('amzn_')
             os = 'centos_6'
           end

I changed the code like this.

           if os.start_with?('amzn_2')
             os = 'centos_7'
           end

           # CentOS 6 doesn't have `/etc/os-release`.
           if (os.empty? && File.read('/etc/centos-release').start_with?('CentOS release 6')) ||
               (os.start_with?('amzn_') && !os.start_with?('amzn_2'))
             os = 'centos_6'
           end

20.04 support

I saw the changelog that it was added support for Ubuntu 20.04, but there is no binaries for this version on bin directory and I am getting some errors, for now I am duplicating the version 18.04 -> 20.04 directly in gem directory.

The version for 16.04 works perfectly on Ubuntu 18.04 and 20.04 (at least the amd64), and debian binaries also should work for ubuntu, so I suggest using same binary for then instead of using a 15~17mb for each ubuntu/debian version, and adding a hash to define wich binary to use should do the work.