Adding image in pdf using pdf writer

Rails
1

Hi,

I am using this code, but I am not able to add the image in pdf using
pdf writer.
Is there any wrong with code?

def pdf1
_pdf = PDF::Writer.new
_pdf.select_font “Times-Roman”
_pdf.text “Hello, Ruby.”, :font_size => 72, :justification =>
:center
_pdf.image “http://localhost:3001/images/rails.png”
send_data _pdf.render, :filename => “hello.pdf”,
:type => “application/pdf”
end
I am getting this error:-
“PNG alpha channel transparency is not supported; only palette
transparency is supported.”

Please help me to solve this problem.

Thanks,
Tushar

2

Pretty straightforward error. You need to make sure you’re using a PNG
without alpha-transparency (24-bit uses them, 8-bit doesn’t.)

3

Jack B. wrote:

Pretty straightforward error. You need to make sure you’re using a PNG
without alpha-transparency (24-bit uses them, 8-bit doesn’t.)

Hi,
Is there no way to support those images?
Thanks,
Tushar