How to remove alpha channel of an image using gm?
I'm looking for functionality similar to 'convert -alpha off ' command of imagemagick, how to achieve the same using gm node module? I couldn't figure out using their documentation.
node.js gm
asked Jan 3 at 7:00
Yogeesh HegdeYogeesh Hegde
611
add a comment |
I'm looking for functionality similar to 'convert -alpha off ' command of imagemagick, how to achieve the same using gm node module? I couldn't figure out using their documentation.
node.js gm
asked Jan 3 at 7:00
Yogeesh HegdeYogeesh Hegde
611
add a comment |
I'm looking for functionality similar to 'convert -alpha off ' command of imagemagick, how to achieve the same using gm node module? I couldn't figure out using their documentation.
node.js gm
asked Jan 3 at 7:00
Yogeesh HegdeYogeesh Hegde
611
I'm looking for functionality similar to 'convert -alpha off ' command of imagemagick, how to achieve the same using gm node module? I couldn't figure out using their documentation.
node.js gm
node.js gm
asked Jan 3 at 7:00
Yogeesh HegdeYogeesh Hegde
611
asked Jan 3 at 7:00
Yogeesh HegdeYogeesh Hegde
611
asked Jan 3 at 7:00
Yogeesh HegdeYogeesh Hegde
611
asked Jan 3 at 7:00
Yogeesh HegdeYogeesh Hegde
611
asked Jan 3 at 7:00
Yogeesh HegdeYogeesh Hegde
611
611
add a comment |
add a comment |
1 Answer
1
active
oldest
votes
Using gm node module, you can use the -alpha option (which is not in the documentation yet) this way:
gm('img.png')
.options({ imageMagick: true }) // enable ImageMagick
.alpha('Off')
.write("out.png", function (err) {
if (err) console.log(err)
})
You could also achieve the same effect with the now obsolete +matte option.
This option will turn off transparency channel on the image.
gm('img.png')
.out("+matte")
.write("out.png", function (err) {
if (err) console.log(err)
})
answered Jan 3 at 11:47
TGrifTGrif
3,37681936
add a comment |
Your Answer
StackExchange.ifUsing("editor", function () {
StackExchange.using("externalEditor", function () {
StackExchange.using("snippets", function () {
StackExchange.snippets.init();
});
});
}, "code-snippets");
StackExchange.ready(function() {
var channelOptions = {
tags: "".split(" "),
id: "1"
};
initTagRenderer("".split(" "), "".split(" "), channelOptions);
StackExchange.using("externalEditor", function() {
// Have to fire editor after snippets, if snippets enabled
if (StackExchange.settings.snippets.snippetsEnabled) {
StackExchange.using("snippets", function() {
createEditor();
});
}
else {
createEditor();
}
});
function createEditor() {
StackExchange.prepareEditor({
heartbeatType: 'answer',
autoActivateHeartbeat: false,
convertImagesToLinks: true,
noModals: true,
showLowRepImageUploadWarning: true,
reputationToPostImages: 10,
bindNavPrevention: true,
postfix: "",
imageUploader: {
brandingHtml: "Powered by u003ca class="icon-imgur-white" href="https://imgur.com/"u003eu003c/au003e",
contentPolicyHtml: "User contributions licensed under u003ca href="https://creativecommons.org/licenses/by-sa/3.0/"u003ecc by-sa 3.0 with attribution requiredu003c/au003e u003ca href="https://stackoverflow.com/legal/content-policy"u003e(content policy)u003c/au003e",
allowUrls: true
},
onDemand: true,
discardSelector: ".discard-answer"
,immediatelyShowMarkdownHelp:true
});
}
});
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
StackExchange.ready(
function () {
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f54017693%2fhow-to-remove-alpha-channel-of-an-image-using-gm%23new-answer', 'question_page');
}
);
Post as a guest
Required, but never shown
1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
Using gm node module, you can use the -alpha option (which is not in the documentation yet) this way:
gm('img.png')
.options({ imageMagick: true }) // enable ImageMagick
.alpha('Off')
.write("out.png", function (err) {
if (err) console.log(err)
})
You could also achieve the same effect with the now obsolete +matte option.
This option will turn off transparency channel on the image.
gm('img.png')
.out("+matte")
.write("out.png", function (err) {
if (err) console.log(err)
})
answered Jan 3 at 11:47
TGrifTGrif
3,37681936
add a comment |
Using gm node module, you can use the -alpha option (which is not in the documentation yet) this way:
gm('img.png')
.options({ imageMagick: true }) // enable ImageMagick
.alpha('Off')
.write("out.png", function (err) {
if (err) console.log(err)
})
You could also achieve the same effect with the now obsolete +matte option.
This option will turn off transparency channel on the image.
gm('img.png')
.out("+matte")
.write("out.png", function (err) {
if (err) console.log(err)
})
answered Jan 3 at 11:47
TGrifTGrif
3,37681936
add a comment |
Using gm node module, you can use the -alpha option (which is not in the documentation yet) this way:
gm('img.png')
.options({ imageMagick: true }) // enable ImageMagick
.alpha('Off')
.write("out.png", function (err) {
if (err) console.log(err)
})
You could also achieve the same effect with the now obsolete +matte option.
This option will turn off transparency channel on the image.
gm('img.png')
.out("+matte")
.write("out.png", function (err) {
if (err) console.log(err)
})
answered Jan 3 at 11:47
TGrifTGrif
3,37681936
Using gm node module, you can use the -alpha option (which is not in the documentation yet) this way:
gm('img.png')
.options({ imageMagick: true }) // enable ImageMagick
.alpha('Off')
.write("out.png", function (err) {
if (err) console.log(err)
})
You could also achieve the same effect with the now obsolete +matte option.
This option will turn off transparency channel on the image.
gm('img.png')
.out("+matte")
.write("out.png", function (err) {
if (err) console.log(err)
})
answered Jan 3 at 11:47
TGrifTGrif
3,37681936
answered Jan 3 at 11:47
TGrifTGrif
3,37681936
answered Jan 3 at 11:47
TGrifTGrif
3,37681936
answered Jan 3 at 11:47
TGrifTGrif
3,37681936
3,37681936
add a comment |
add a comment |
Thanks for contributing an answer to Stack Overflow!
- Please be sure to answer the question. Provide details and share your research!
But avoid …
- Asking for help, clarification, or responding to other answers.
- Making statements based on opinion; back them up with references or personal experience.
To learn more, see our tips on writing great answers.
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
StackExchange.ready(
function () {
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f54017693%2fhow-to-remove-alpha-channel-of-an-image-using-gm%23new-answer', 'question_page');
}
);
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
