Watermark PNG using Ruby
Watermark PNG image. Stamp a PNG with the text.
Watermark PNG features
Add text watermark to PNG image easily with Watermark PNG Ruby SDK.
ConvertAPI Ruby library install
ConvertAPI provides a Ruby Gem that allows you to perform a Watermark PNG conversion with just a few lines of code. First, install the ConvertAPI Ruby SDK:
gem 'convert_api'
Authenticate your Ruby library
You can obtain your secret key by signing up for a free account. Once you sign up, you'll receive 250 free conversions instantly! Grab your authentication secret from the account dashboard, and authenticate the ConvertAPI Ruby library like this:
ConvertApi.configure do |config|
config.api_credentials = 'secret_or_token'
end
Watermark PNG using Ruby in no time!
Once you have your authentication in place, simply copy-paste this png to watermark conversion code snippet into your Ruby project:
Try the conversion online - no coding required!
You can try out advanced conversion parameters and test the conversion result online using our interactive demo tool. This tool will produce the same conversion output as if you were using the library from your solution, and it will auto-generate the code snippet for you!
Try for FREE!Conversion parameters
Specifies the text to use as watermark. The list of supported variables:
%PAGE%
- current page number%PAGES%
- total number of pages%FILENAME%
- name of the file%WEEKDAY%
- full weekday name%WEEKDAY_SHORT%
- abbreviated weekday name%MONTH%
- month number (1-12)%MONTHNAME%
- full month name%MONTHNAME_SHORT%
- abbreviated month name%YEAR%
- year with century (YYYY)%YEAR_SHORT%
- year without century (YY)%DAY%
- day of month%DAY_YEAR%
- day of the year (1 -366)%HOUR%
- hour (01- 12)%HOURS%
- hour (00-23)%MINUTES%
- minutes (00-59)%SECONDS%
- seconds (00-59)%AMPM%
- AM PM%DATE%
- local date representation%TIME%
- local time representation%DATETIME%
- local date and time%AUTHOR%
- document Author%TITLE%
- document Title%SUBJECT%
- document Subject%KEYWORDS%
- document Keywords
Specifies the watermark font name. Contact us if you are looking for a specific font for a watermark that is missing from the list.
Values: Arial Bahnschrift Calibri Cambria Consolas Constantia Courier New Georgia Tahoma Times New Roman Verdana
Specifies the watermark font size.
Specifies the watermark font color.
Specifies font stroke color.
Specifies the stroke width.
Specifies whether fonts should be embedded.
Specifies whether fonts should be subset.
Specifies the font encoding.
Specifies the text rendering mode.
Values: filltext stroketext fillstroke invisible
Specifies the watermark rotation angle in degrees.
Specifies the horizontal watermark alignment.
Values: left center right
Specifies the vertical watermark alignment.
Values: top center bottom
Specifies the watermark X coordinate. If set overrides property HorizontalAlignment.
Specifies the watermark Y coordinate. If set overrides property VerticalAlignment.
Specifies measurement unit to use for the PositionX and PositionY properties.
Values: pt in mm cm
Specifies watermark opacity level.