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
0
votes
1 answer
saving image file in mongodb using node gm (graphic magic)
I am totally new in node and mongodb concepts. I am trying to save the image, file (meta data) saved successfully but its chunks are not saving.
I also read gm documentation but did not helped alot plus i am not facing any error.…
Qubaish Bhatti
- 700
- 5
- 22
0
votes
0 answers
Commenting an image util module gm
I'm trying to comment on an image using the gm module, but it only creates the same image I used without the comment.
Code in Context
var gm = require('gm');
gm('api/routes/image1.jpg')
.comment(['Text Example'])
…
Jonathan
- 127
- 1
- 8
0
votes
1 answer
Overlaying text on animated GIF with gm quite slow
I'm using this bit of code to call gm in Node.js to overlay text on animated GIFs:
var gm = require('gm');
gm(infile)
.stroke("#000000")
.fill('#ffffff')
.font("./impact.ttf", 42)
.dither(false)
.drawText(0, 0, text, 'South')
…
evilSnobu
- 24,582
- 8
- 41
- 71
0
votes
2 answers
node gm - s3 upload on heroku (0 byte)
I'm trying to build an app to manipulate images and upload them on s3.
The code works perfectly on localhost. But when I deploy the same code to heroku, the uploaded image on s3 is 0 byte empty:
here is my code:
const fs = require('fs');
const…
JohnnyTheTank
- 668
- 5
- 14
0
votes
1 answer
Not able to bluebird.Promisifyall gm
The gm is giving the gm().write() expects a callback function error. The write function comes from fs so I also promisified it. Still it does not work.
var gm = bluebird.promisifyAll(require("gm"));
var fs =…
user3236751
0
votes
0 answers
Merging GIF with PNG file
I want to combine 4 image into one, 2 GIF and 2 PNG. I'm doing this with graphic image but unfortunately the plugin is picking up the first frame of GIF only. The end result is a tile of 4 standstill image. Is there any method I missed out from…
1myb
- 3,536
- 12
- 53
- 73
0
votes
0 answers
Nodejs - Graphic Magic or ImageMagic - overlay as Photoshop
Is it possible to compose an image with gm as we do it with photoshop. Here is a picture what I mean:
What I am using now is multibly, but it doesn't provide the same effect as overlay so I was wondering if there is a way to achieve this.
Here is…
Alex
- 579
- 5
- 24
0
votes
1 answer
Inserting one png above another by coords
How I can insert one page above another in specific cords.
I want to use gm library for imageMagic but I cant find such way.
maybe another libs exist
John
- 21
- 3
0
votes
1 answer
Add transparent color layer to b&w image using ImageMagick
I'm trying to take a black and white image and add a red transparent layer on top. Something similar to the image. Does anyone know how I can do this using ImageMagick in Node using gm?
Bcf Ant
- 1,639
- 1
- 16
- 26
0
votes
0 answers
Saved image not imediatly available. As if the request resolves before it is complete
A user selects an image (in this case from Facebook, but I don't that is relevant to the problem). A request gets sent to the server to fetch the image and save it locally. The request resolves with 200. The resolved request is picked up on the…
SystemicPlural
- 5,629
- 9
- 49
- 74
0
votes
2 answers
Node Js gm, Resize and overlap
I want to insert an image(img1) into another(img2) but before inserting, img1 must be resized based on img2 dimensions.
how can I achieve this with nodeJs gm ?
I'm using imageMagic.
Saman Mohamadi
- 4,454
- 4
- 38
- 58
0
votes
1 answer
ImageMagick: why resized GIF image seems to have some colors replaced by white?
Was wondering if anyone knows what might be causing this.
Original image:
Thumbnail code (using http://aheckmann.github.io/gm/):
const generateThumb = () => gm(this.getReadStream())
.in('-thumbnail', '400x400^')
.in('-gravity', 'center')
…
Olivier Lalonde
- 19,423
- 28
- 76
- 91
0
votes
2 answers
Error: Stream yields empty buffer using gm on nodejs (Windows)
When I try to execute this simple example of code using gm and nodejs on Windows:
var gm = require('gm').subClass({imageMagick: true});
gm(50, 50, '#000F')
.setFormat('img')
.fill('black')
.drawCircle( 50, 50, 60, 60 )
…
Airton Gessner
- 215
- 2
- 11
-1
votes
1 answer
Resizing image on server size
In my node.js project, I want to be able to pull images from the web, resize them to the size I want, and output as a base64 string.
Which library is the best way of doing this?
I tried a bunch of different ones but none of them are working:
var url…
Chris Jones
- 856
- 1
- 11
- 24