Questions tagged [png]
The png tag has no usage guidance.
0
votes
0answers
9 views
Using convert to crop scanned images and create pdf
I have 3 images I've scanned, that are legal sized (8.5*14), but the scanned paper is actually letter (8.5*11). I want to crop off the bottom 3 in from each image and output 1 image per page.
This ...
0
votes
0answers
20 views
Why is my png image data disappearing?
I've been creating a few PNG images with some maps in the last days (using R). After the images are finished, I move them to a separate folder labeled "ok", so I don't get the risk of overwriting them ...
0
votes
0answers
53 views
GStreamer: APNG, GIF or animated WebP
I want to generate an animated preview of a video using gstreamer for preview on a webpage. I'm able to get a static PNG with the pipeline
filesrc location=... ! decodebin ! videoconvert ! pngenc ...
4
votes
0answers
113 views
rsync gets stuck on *.png files [closed]
I have been running the following rsync command as a cronjob for the past month. Today I discovered that this has been getting stuck on a *.png file and none of my other data has been backing up! In ...
6
votes
2answers
1k views
Convert PDF to images in 1920x1080
i want to convert a PDF to PNG images using convert.
The images must fit the 1920x1080 ratio by having a ?x1080 ratio, and have the best quality.
Here are many options i can use with convert :
https:/...
0
votes
1answer
35 views
Tricky issue with stata and libpng
I use stata 14 in Linux mint 19.3. For some reason stata has a problem with the libpng included in Linux mint 19. To fix that, I followed a fix that installs an older version of libpng (see here) to ...
0
votes
1answer
58 views
How to convert a png file from from 600 x 800 into 600 x 400? [duplicate]
Get info on my source png file.
file old.png
old.png: PNG image data, 600 x 800, 8-bit colormap, non-interlaced
I want to convert old.png from 600 x 800 into 600 x 400.
convert -resize 600x400 ...
0
votes
1answer
306 views
What is this GhostScript error? “/undefined in /BXlevel”
At first I thought this might have been a missing font issue but as far as I can tell from the output, GS is finding the font just fine..
Any hints as to what the problem might be?
$ /usr/bin/gs -...
3
votes
2answers
67 views
How can I save a scrollable terminal window (RoxTerm) into a png image?
I would like to save a Ruby program coloured terminal output into a png file, output doesn't fit into the screen height, so it is scrollable. Is it possible to save the whole or part of the scrollable ...
2
votes
0answers
145 views
Create small high-quality GIF/APNG from a bunch of PNGs
I have 50 PNGs (like those ones here) and I would like to create a GIF (or APNG) animation from it that approximately retains the quality and is small.
What I'm doing so far is to rescale and throw ...
4
votes
2answers
9k views
How to get the DPI of an image file (PNG)
If I export an image with lets say 300 DPI and I read out its meta-info with any application that can do it (like file, exiftool, identify,mediainfo etc.), I always get a value showing Image-Width and ...
0
votes
1answer
39 views
Replace a certain color of pixels in a png with another png image
I have a png (items.png) which consists of mostly black pixels.
I want to replace all the black pixels with another image. (background.png)
The images are not the same size, items.png is smaller ...
1
vote
0answers
51 views
match and replace section in PNG file
is it possible to use command line program to replace a section within PNG when it match sample picture?
like:
When weather report in PNG match the image of "sun.png", replace that specific section ...
1
vote
1answer
2k views
Display a png image file on a framebuffer: png-fb source
I want do display a png image on a framebuffer on an embedded Linux.
I already found the manpage of png-fb:
man fb-png
But I could not find a source for that. Does anybody know the source for that ...
1
vote
0answers
141 views
crop and convert to pdf adds unwanted margin
I have a few PNG files that I want to print in a certain scale. For that I want to convert each of them to (DIN-A4 sized) PDF and crop into multiple pages. So far I've used this command:
convert -...
1
vote
1answer
170 views
How to read XML input in lstopo
I have an XML output file from the lstopo command and I wanted to build a PNG file for it. Can I do this using the command line? Something like:
lstopo -i out.xml -o abc.png
Is something like this ...
0
votes
1answer
58 views
Windows visio pngs can't be opened on linux
I have a PNG image created from VISIO under windows which I tried to use in LaTeX. However, every linux program (LaTeX, Okular, GimP) claims the file is corrupted, however, it shows up fine in Chrome. ...
2
votes
1answer
105 views
Searching Files according to PNG Meta-Tags
I want to search for PNG's in a (sub-)folder structure with the meta tag software set to the value GNOME::ThumbnailFactory and delete them with a single bash command.
Have the story behind it, you ...
1
vote
1answer
35 views
Need to replace one cursor of a set; have already created the PNG for the cursor
I have created a replacement for xterm cursor that will allow me to see the cursor (Windows, incidentally, calls the xterm cursor the "i-beam", which is rather more descriptive) much better. Problem ...
5
votes
2answers
760 views
Create the same PNG with ImageMagick 2 times: Binaries differ
I create two images that should be identical, but their binaries are different:
$ convert -size 1x1 xc:white out1/w.png
$ sleep 1
$ convert -size 1x1 xc:white out2/w.png
$ diff out1/w.png out2/w.png
...
2
votes
1answer
2k views
limitations of CUPS command line printing of image files
I have my default printer set: lpoptions -d HP_ENVY_5530_series.
I can print some text:
echo HELLO > h.txt
lp h.txt
CUPS understands many different types of files directly, including text, ...
2
votes
3answers
356 views
Bash script to minify PNG's keeps stopping
I have tried to run this script a few times now and it keeps hanging. I have 60,000 images and it goes through about a 1000 and then stops. I have been running the top command and the process ...
5
votes
1answer
1k views
Convert Xcursor to PNG
Xcursor is a format for the graphics of the cursor in X11 (file reports X11 cursor).
xcursorgen allows you to convert PNG files and some metadata to Xcursor files.
How do I convert an Xcursor file ...
4
votes
2answers
186 views
How do I write a script to automatically optimize all the PNGs in my MediaWiki images directory?
I have MediaWiki 1.25.2 installed on my 64-bit Debian 8.1 VirtualBox machine and I'd like to be able to upload the images/ directory from this installation to my DropBox. Being a cheapskate I'm trying ...
1
vote
1answer
10k views
Conversion from PNG to EPS
I would like to convert PNG images/graphs to EPS without losing even a bit on resolution. All the commands I tried (potrace, autotrace, convert, gimp) decrease the resolution quality.
3
votes
1answer
11k views
Imagemagick used to generate PPM's in Linux, PPM's are unreadable
I need to generate PPM's as raw data sources for one program. I have a bunch of png's as Input, which I'm going to convert ppm's. When I try a tool like mogrify it generates files, but these are ...
5
votes
3answers
3k views
How to convert multiple XCF files to PNG?
I have a folder with a lot of xcf files which I want all to be converted to png files, at best via a one-liner from bash.
How can I achieve such a task?
3
votes
1answer
420 views
Icon themes, when is svg format helpful?
I found that arch provides both oxygen-icons and oxygen-icons-svg, what's the necessity of svg format? Is there something that a PNG image "can't do", maybe performance issue?
Not sure about it.
