Use this tag for questions regarding usages of the gm library for node.js
gm, graphicsmagick and imagemagick for node.js, is a node.js library that can execute native commands for image processing.
Questions tagged [gm]
119 questions
1
vote
0 answers
Resizing hundreds of JPG's using node and gm
I've got an image folder with about 100 sub-folders and in each there are about 5 JPGs.
I'm trying to use node to loop through all the images and resize them so the smallest dimension is 1200. They are a mix of portrait and landscape and the…
Nick Middleweek
- 1,049
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1
vote
1 answer
Strange node.js + http + gm + s3 behavior
The purpose of this node.js code block is to download an image, resize it, upload the resized image to s3, and then upload the original image to s3.
Non-Working code:
http.get(url, function onResponse(res) {
gm(res)
.resize(250,250)
…
Jack
- 51
- 6
1
vote
2 answers
Get info of applied image manipulation
I am using gm for node. I would like know the equivalent Javascript of the ImageMagick CLI command:
convert /path/to/source.png -format "%@" info:-
This will output the trim data, resulting in something like:
2672x3579+1115+725
I initially assumed…
Colin Meinke
- 173
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- 7
1
vote
0 answers
how to achieve the following effect in imagemagick
I am trying to get sketch effect and i have the imagemagick command line code as follows
convert 1.jpg -colorspace gray ( +clone -blur 0x8 \) +swap -compose divide -composite -linear-stretch 2%x20% cousincs.jpg
I am using gm module and I tried…
ayniam
- 573
- 2
- 8
- 27
1
vote
0 answers
gm library react/webpack issues
I'm trying to use this package gm from node that also require that I require fs on the top. It was giving me some error but I fix it adding this configuration to my webpack.config file:
node: {
fs: "empty",
child_process: "empty"
}
After…
thoer metn
- 61
- 2
1
vote
2 answers
Can I chain commands together with gm for node.js?
Can I chain two or more commands together when using gm, the GraphicsMagick library for node?
Specifically, I've got an image that I'd like to add text to, then put a watermark on it, but nothing I try seems to work.
I've tried using…
Grayda
- 1,870
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1
vote
0 answers
NodeJs - graphicsMagic writes empty images
I'm resizing an image using gm library but it create an empty image. I use different ways for writing result but everytime get empty image.
gm(readStream)
.size({bufferStream: true}, function(err, size) {
this.resize(100, 100, '%')
…
Ali Amini
- 172
- 2
- 14
1
vote
0 answers
Get progress when piping through gm
On my node app I'm trying to figure out how to see the progress of the stream.
How can I get tell the browser what the progress is?
This is the code I'm using on the server:
gm(readStream, 'img.jpg')
.resize(width, height)
.quality(quality)
…
Michael Seltenreich
- 3,013
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1
vote
0 answers
Why is not gm's method 'toBuffer' promisified?
I tried to use gm to resize a big avatar image to 64 * 64.
The express function is an async function and I tried to promisify all methods by the following codes:
import gm_origin from 'gm'
import Promise from 'bluebird';
const gm =…
Colin Wang
- 6,778
- 5
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- 42
1
vote
1 answer
Meteor cfs:graphicsmagick transformWrite Error write eof at errnoException
Please help with this error, use cfs:graphicsmagick for Fs.Store.GridFS, I have this code..
Avatar = new FS.Collection("avatar", {
stores: [new FS.Store.GridFS("avatar", {
transformWrite: function (fileObj, readStream, writeStream) {
…
Pedro Quinteros
- 21
- 1
1
vote
0 answers
Replace white space in png image on transparent background
operator('Opacity', 'Assign', Math.round( (1 - opacity) * 100 ) + '%')
This command from the gm library for node replaces the whole picture.
How I can replace only space with white color on the image with this lib?
John
- 21
- 3
1
vote
1 answer
When is an image uploading completion using multer?
I'm using multer.js on my project for user profile image uploading when user registration.
I need to store user image file and to make thumbnail image also. When make thumbnail, I'm using gm.js. Belows are my codes.
import { Router } from…
Benjamin
- 707
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- 8
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1
vote
0 answers
no decode delegate for this image format `'
I get strange error when I use gm package. I work with Windows x86. Already I installed gm, also imagemagick.
This is my code:
function convert(response, next) {
console.time("convertImage");
console.log("Reponse content type…
Rougher
- 834
- 5
- 19
- 46
1
vote
1 answer
Amazon Lambda function merge multiple s3 images and put to a destination bucket
I was working on a lambda function which will be triggered via the amazon rest api.
I have created the following
a POST end point on REST API console
a lambda function linked to the REST API
Now as a first try I created the function such that it…
Abhik Chakraborty
- 44,654
- 6
- 52
- 63
0
votes
0 answers
Creating an image with gm and uploading to S3, v3
Many moons ago I made a tiny Lambda in NodeJS 8.x which created a PNG file to display a bunch of generated text and uploaded to S3 using s3.upload and it worked fine. I now want to transition to NodeJS 18.x and the v3 AWS SDK, but it seems…
Martyn Brearley
- 59
- 6