Legacy ImageMagick Discussions Archive

snibgo wrote: 2017-12-15T05:08:48-07:00 I guess, because your logo colour is within 15% of #c03030.

Noted and thanks

satimis

Documentation of the options is at http://www.imagemagick.org/script/command-line-options.php

"-opaque {colour}" means "change pixels that are currently {colour} to the fill colour".

If fuzz was zero, only pixels that were exactly {colour} would be changed. With a fuzz of 15%, all colours that ...

I have a logo .png file (only words) in red color with transparent background.

Is there a command line to change the color of the words from red to yellow?

Depending on your version of IM one or both of these should do what you describe...


convert logo.png -fill yellow -colorize 100 logo ...

Hi all,

Following command helps me out:
⟫ convert traces_of_life_10_en.png -fuzz 15% -fill yellow -opa
que "#c03030" traces_of_life_10_en_yellow.png

I found it on Internet

Could you please help me to understand;
-fuzz 15%
-opaque "#c03030"
?

Thanks

satimis

Hi all,

I have a logo .png file (only words) in red color with transparent background.

Is there a command line to change the color of the words from red to yellow? Please advise. Thanks

Regards
satimis

Hi fmw42,

Sorry, I couldn't get it done here.

Please see;

tmp1.png
https://www.dropbox.com/s/xxf7cjj8uiydrha/tmp1.png?dl=0

tmp2.png
https://www.dropbox.com/s/7jx9usnhfe0pov1/tmp2.png?dl=0

tmp3.png
https://www.dropbox.com/s/bz3ts3qwsi2ercq/tmp3.png?dl=0

I ran LibreOffice Draw to mask WhatsApp ...

Is it possible to do follows;

1) Changing ONLY WhatsApp on the file to red and other text remaining in black?
2) Adding the word 'public' in red before Wi-Fi connection?

1) You would have to create a black/white mask to use to select where you wanted to change to red and where to leave as ...

try this:

convert -density 300 method.pdf -alpha off -transparent white result.png

Tried;
⟫ convert -density 300 image.pdf -alpha off -transparent white image_transp.png
⟫ display image_transp.png

It works. Thanks

Image .pdf
https://www.dropbox.com/s/ygu65v1z2o7gf5p/karcher_sc1.pdf?dl=0 ...

- snip -

1) Yes you can combine pages from one PDF with another PDF, but you have to rasterize both PDFs to the same density and then enclose that rasterized image in a vector PDF shell. So the text is no longer vector text and cannot be edited in a PDF editor.

2) ImageMagick does not have any ...

Yes, hex colors are permitted. On unix systems, they need to enclosed in quotes as you have done.

See the following for the forms of colors that IM can handle: http://www.imagemagick.org/script/color.php


Following command works for me. Thanks

convert -density 300 method.pdf -alpha copy ...

An alternate and possibly better method is

convert -density 300 method.pdf -alpha copy -background red -flatten result.pdf

Your advice works here. Thanks

Before posting I tried following command but failed;
convert method.pdf -fuzz XX% -fill red -opaque white result.pdf


Can I use color ...

Hi fmw42,

Thanks for your advice.

OS - Ubuntu 16.04

Imagemagick
⟫ apt-cache policy imagemagick
imagemagick:
Installed: 8:6.8.9.9-7ubuntu5.3
Candidate: 8:6.8.9.9-7ubuntu5.3
Version table:
*** 8:6.8.9.9-7ubuntu5.3 100
100 /var/lib/dpkg/status
8:6.8.9.9-7 500
500 http://ubuntu.01link.hk ...

Hi all,

Please advise how to use 'convert' to change font colour on a PDF file?

Thanks

Regards
satimis

Hi fmw42,

I got it done. Sorry I forgot adding "-resize 40%" here Please see
https://www.dropbox.com/s/mkb409f455tqn ... 4.gif?dl=0

Thanks

Regards
satimis

If I expect adding further image;
chinese-flag-waving-gif-animation-10.gif

This is harder and requires special techniques to add an animation to a static image. See http://www.imagemagick.org/Usage/anim_mods/#background. And it has to be saved as GIF not PNG. Note I have reduced the size of ...