wkhtmltopdf-crystal alternatives and similar shards
Based on the "Low level bindings" category.
Alternatively, view wkhtmltopdf-crystal alternatives based on common mentions on social networks and blogs.
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termbox-crystal
Bindings, wrapper, and utilities for termbox (terminal interface library) in Crystal -
serialport.cr
Crystal bindings for libserialport: cross-platform library for accessing serial ports. -
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InfluxDB - Power Real-Time Data Analytics at Scale
Do you think we are missing an alternative of wkhtmltopdf-crystal or a related project?
README
WkHtmlToPdf for Crystal - PROJECT UNMAINTAINED 
This project is not maintained anymore
If you like it or continue to use it fork it please.
Crystal wrapper for libwkhtmltox C library.
wkhtmltopdf and wkhtmltoimage permit to render HTML into PDF and various image formats using the Qt WebKit rendering engine - see wkhtmltopdf.org
Requirements
- libwkhtmltox must be installed
- pkg-config must be available
Installation
- Add this to your application's
shard.yml:
dependencies:
wkhtmltopdf-crystal:
github: blocknotes/wkhtmltopdf-crystal
- If wkhtmltox library is installed but missing for Crystal compiler: copy wkhtmltox.pc (from lib/wkhtmltopdf-crystal folder) in a pkg-config folder (ex. /usr/local/lib/pkgconfig) or set the environment variable PKG_CONFIG_PATH with the path to wkhtmltox.pc before compiling
- Optinally edit wkhtmltox.pc with the correct path to wkhtmltox (default headers path: /usr/local/include/wkhtmltox)
Usage
HTML to PDF:
require "wkhtmltopdf-crystal"
Wkhtmltopdf::WkPdf.new( "test.pdf" ).convert( "<h3>Just a test</h3>" )
Fetch URL content and convert it to JPG:
require "wkhtmltopdf-crystal"
img = Wkhtmltopdf::WkImage.new
img.set_url "http://www.google.com"
img.set_output "test.jpg"
img.set "quality", "90"
img.convert
Write to buffer (only if no output is specified):
require "wkhtmltopdf-crystal"
pdf = Wkhtmltopdf::WkPdf.new
pdf.convert "<h3>Just a test</h3>"
pdf.object_setting "footer.right", "[page] / [topage]" # Set page counter on footer
unless pdf.buffer.nil?
puts "PDF buffer size: " + pdf.buffer.try( &.size ).to_s
end
Lib settings (available with set / object_setting methods on wrappers): libwkhtmltox pagesettings
More examples
See examples folder. Includes a Kemal example to print an ECR view in PDF.
Troubleshooting
Invalid memory access
- If this component needs to be called multiple times it's necessary to initialize the library in the constructor and call deinitialize when all is done. Example:
require "wkhtmltopdf-crystal"
pdf = Wkhtmltopdf::WkPdf.new "", true
at_exit do
pdf.deinitialize
end
pdf.set_output "test1.pdf"
pdf.convert "<h3>Just a test 1</h3>"
pdf.set_output "test2.pdf"
pdf.convert "<h3>Just a test 2</h3>"
Contributors
- Mattia Roccoberton - creator, maintainer