PNG (portable network graphics) is a popular image format that supports 32-bit colors and transparency.

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1answer
416 views

How to setup default interlacing for PNGs in Photoshop?

Every time I want to save a PNG in photoshop, asks me what type of interlacing I want. Is it possible to set the default to None and never hear about that dialog box again?
6
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1answer
2k views

Is it possible to make a .png (or other) image that does NOT have rectangular dimensions?

This might be a dumb question, but is it possible to make a .png file that isn't square? If so, how can one do this in Gimp? Ideally I'd like one in the shape of an X.
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2answers
316 views

Why would PNG format images be stopped by a mail client?

I tried to send someone an email with a PNG format image attachment but it was stopped by their email filtering software (messagelabs). They said I could send them the image in a JPG or ZIP format ...
0
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2answers
24 views

Do more compressed PNG images take longer to load?

When I create PNG files with very small disk size, I tend to wonder if the file size becomes less important than the time viewers would need to decompress the image. Technically that would be trivial ...
0
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1answer
40 views

How can I convert a large PDF to PNG?

I want to convert a very large PDF file (>2GB) to a PNG (or JPEG) file so that it is easier to open and look at. I want to do that without opening the PDF file since it is too large to be opened. Is ...
0
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2answers
4k views

How to change the colour of a png image in any adobe software

I have a logo that is a process color and I need to change it to a pantone colour. The only way I could change the colour was if I live traced it but I lost some detail. So I was wondering if there is ...
1
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1answer
2k views

How do I merge a folder of PNG images to a mp4 movie using avconv?

I have a folder containing many time stamped PNG images which I'd like to merge to a short movie. The contents of that directory looks like this: └── images ├── img_20130421_115547.png ├── ...
2
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2answers
268 views

PNG displays differently in Firefox

Currently I'm working on a website with some bright colors. I'm trying to implement a seamless overlay on top of a few images, to give the sensation that the background is flowing over the image, ...
2
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2answers
242 views

Why shell commands for PNG file in Windows 8 doesn't work?

I have exactly same task like here: Windows 7 - Add shell command for .png file But this solution doesn't work in Windows 8 for unknown reason only for PNG files. And I don't know why. I tried some ...
0
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1answer
31 views

Transparent regions of pasted png display as black in Inkscape

If I copy and paste, for instance, this image from Chromium or Opera webbrowsers into Inkscape, the regions which should be transparent are rendered as black, like so: How can I avoid this?
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1answer
1k views

How can I create a 24-bit PNG with alpha and no transparency in Fireworks CS3?

We're creating icons for a mobile app, and the developers have asked for very specific files. One needs to be 48px x 48px and has to be a 24-bit PNG with alpha and no transparency. I'm using ...
4
votes
2answers
465 views

Create a .png with zopfli

I wanted to give zopfli a try since I have some static .png's that I am using on a website. I see how I can create .gz and .deflate-files. But how can I create a png that can be displayed in FF, ...
521
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5answers
67k views

Why does this PNG image display differently in Chrome & Firefox than in Safari and IE?

Check this image out: On Chrome and Firefox it will show as a pear. Now, try to save it and look at it saved on your desktop. Also, try viewing in Safari or Internet Explorer. It will display ...
2
votes
2answers
320 views

PNGs with Black Backgrounds

Why is it that when I copy/paste PNG files with a transparent background into photoshop that they show up with a black background, whereas if I save them, then open they're transparent? I find it ...
29
votes
9answers
21k views

Command-line application for converting SVG to PNG on Mac OS X

Are there any command-line programs that can convert an SVG to PNG, that run on Mac OS X? Edit: Dylan B had a good answer with ImageMagick. For reference, to install ImageMagick with SVG support on ...
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4answers
2k views

Make Thunderbird 3 paste inline images as GIF or JPG instead of PNG

I send email to people whose mailers don't show PNG images correctly, so it seems to them that I sent no images inline at all. In thunderbird, I can't see any options to paste inline images as GIF or ...
4
votes
1answer
8k views

Is there any quality difference between PNG vs BMP image formats?

I have just learned that PNG is a lossless image format while BMP can be both uncompressed or lossless format. Should there be a quality difference between these two? If not, does it mean that other ...
0
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2answers
241 views

Transparent texture rendered as black

I'm trying to render a scene with transparent png. The scene is actually imported from a .obj file (with another .mtl file), which should technically applies the transparency for me. ^ It does ...
0
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1answer
91 views

Why do light edges appear on transparent PNGs online?

Everytime I try to use transparent PNG images on sites, white edges keep appearing around the images, seen in the photo below. How come this is happening, and how do I stop this from happening? ...
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2answers
7k views

How to create an uncompressed AVI from a series of 1000's of PNG images using FFMPEG

How can I create an uncompressed AVI from a series of 1000's of PNG images using FFMPEG? I used this command to convert an input.avi file to a series of PNG frames: ffmpeg -y -i input.avi -an ...
0
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1answer
82 views

Unable to plot png in gnuplot

i need to plot png files in gnuplot 4.6.3 and/or 4.6.4.I am unable to do so as set term does not list "png" as an option. system information is Linux masterx-Studio-1535 3.5.0-27-generic #46-Ubuntu ...
0
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1answer
80 views

gnuplot not working on ubuntu

My initial problem is that i am unable to find png as list of terminals in set term. So using the link http://askubuntu.com/questions/393882/png-terminal-in-gnuplot, I installed the gd library.And ...
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4answers
25k views

How to read Fireworks PNG multilayer files without Fireworks

I recieved a couple of Fireworks PNG files. Fireworks has a special format for saving several source images in layers in the png file. How can I read these without having Fireworks installed? (im ...
1
vote
1answer
67 views

How to make SVG in Inkscape really scalable?

I wanted to know how to make SVG from a raster picture in Inkscape. I am in Wikipedia which uses lot of SVG's so I want to make a few. I know how to track those PNG and export the bitmap results as ...
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0answers
33 views

Using Ghostscript, can an image output be scaled prior to “printing”?

I'm working on a project where par of the requirements are to convert the first page of a PDF to a PNG. This in and of itself is relatively simple, but I've yet to find a way to scale the resulting ...
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votes
1answer
5k views

How can I convert a series of PNG images to a video for YouTube?

I have a sequence of PNGs (here is one specimen) which I turn into a video with ffmpeg: ffmpeg -r 10 -i image%03d.png -s 1380x720 -c:v libx264 -qscale 10 -r 30 basf_merck_libx264.mp4 With ...
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9answers
1k views

How to compress a huge amount of PNG images?

At work, on certain projects I have to manage a lot of images. Most of the time PNG files work the best for what I'm doing. With such a huge amount of images, I've tried using PNG compression with ...
14
votes
6answers
29k views

How can I save a graph to a PNG or GIF file in Microsoft Excel?

How can I save a graph to a PNG or GIF file in Microsoft Excel? I know I can save as an HTML file and use the image created there, but I suspect there is a way that doesn't create other clutter of ...
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0answers
224 views

Exporting high quality PNG from LibreOffice Draw

I need to generate a PNG file of an image composed in LibreOffice Draw. When I export to PNG directly, the quality is almost perfect, but it's just slightly blurry. However, when I export directly ...
2
votes
4answers
3k views

How do I convert a .PNG into a .ICO?

There's an image in the VS2010 stock icon pack which is only included as a PNG, which I would like to use as an ICO (I want XP and earlier users to see the icon). How can I convert the PNG into the ...
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0answers
78 views

Image optimization: Photoshop CS6 vs jpegtran / OptiPNG

Is there any difference in terms of algorithm for optimization between Photoshop's Shift+Alt+S (save for web) and jpegtran's -optimize and -progressive? It seems my images are not reduced (or reduced ...
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3answers
25k views

Photoshop How to save selection to PNG

I have a largish PSD file with a couple of hundred layers, that I would like to extract selected areas from into PNG files. Areas can consist of a couple of layers. Being new to Photoshop, I have ...
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3answers
6k views

Convert video to apng/png?

I tried to do this with ffmpeg but failed (I also failed making animated GIFs). Is there a simple to use free program (command line is okay) to convert videos to animated PNGs? As long as it doesn't ...
0
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2answers
125 views

Fix Linux-made png file for use on Windows

There is a particular icon library that I really like from DeviantArt. Now, I have downloaded the package that has the png files inside (I know the ico files are there, but I want the png files). ...
34
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8answers
31k views

How to convert a PDF document to PNG?

Looking for a free way to convert a PDF document to an image.
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3answers
9k views

Can't see PNG previews in Windows 7?

I´m using Windows 7 x64. I can see the .jpg, .gif, etc. preview thumbnails but if .PNG, I only see the generic image, and not the image preview like in the other formats. What can I do to fix this?
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4answers
2k views

Best way to export powerpoint slides into pngs with different resoltuions?

I am trying to convert powerpoint slides into a png. I know that there are several ways that allow to do this by allowing for changing the resolution (e.g., within powerpoint by changing the registry, ...
1
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3answers
3k views

how to change the png file background to transparence

I used Paintbrush drawing an icon, if it is on a colored background, it will display a white block shown as below. I prefer to change the icon background from white color to transparent color: ...
3
votes
4answers
2k views

Is there any way to save a PNG-8 file with Alpha Transparency in Photoshop?

I recently discovered something that I previous thought was impossible: PNG-8 files can store Alpha Transparency in the same way as PNG-32 files can. Not Indexed Transparency (like GIFs), but full on ...
5
votes
4answers
735 views

How to open huge PNG image [duplicate]

I have a really big PNG image, it's ~11GB. Is there any way to open it? I would just like to view it without too many problems. I tried Photoshop CS6 and it's too big even for this kind of modern ...
2
votes
3answers
598 views

How to change DPI of a PNG file? (in command line, without ImageMagick)

I am looking for a way to change the DPI on PNG image files. Using ImageMagick this is easy: $ convert -density 150 -units pixelsperinch file.png file.png The problem is that I will run this ...
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votes
2answers
9k views

What software can I use to read png metadata?

I know that I can create a simple little Qt based application that adds and read png metadata, using the QImage.setText(...) and QImage.text(...). That metadata can then be read with a linux command ...
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0answers
323 views

.png file won't open in terminal

for some reason this .png image won't open in my terminal. i keep getting these responses: lkthomas@unix12:~/private$ eog snippet.png Cannot open display: Run 'eog --help' to see a full list of ...
45
votes
6answers
52k views

Batch converting PNG to JPG in linux

Does anyone know a good way to batch-convert a bunch of PNGs into JPGs in linux? (I'm using Ubuntu). A png2jpg binary that I could just drop into a shell script would be ideal.
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3answers
4k views

Bulk convert PNG-24 to PNG-8 files with best quality

Can anybody recommend a good method of bulk converting a large amount of PNG-24 files to PNG-8 with as little loss of quality as possible and maintaining transparency? I've tried ImageMagick but the ...
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2answers
695 views

PNG file size is too big after converting from JPG

I try to convert a JPG file to PNG, but the size is still too big, about 7 MB. What's wrong? I used Microsoft Paint to convert it. The original file is only 500 KB in JPEG, yet the PNG file is 7 MB. ...
7
votes
3answers
10k views

How to convert a multi-page PDF file to PNG files, with one PNG file per page of the PDF document (Windows)

Is there a software that could convert a multi-page PDF file to PNG files, and could automatically save one PNG file per page of the PDF document (for Windows 7)? I have tried a few virtual printer ...
2
votes
1answer
1k views

Using ffmpeg to make a movie from png files

I have 277 800x600 png files with filenames with the format island_sizes-CSH(II)-###.png where ### is a number starting with 084 and ending at 360. I'm doing ffmpeg -i island_sizes-CSH\(II\)-*.png ...
26
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8answers
24k views

JPEG vs PNG vs BMP vs GIF

I would like to know which one of these formats requires less memory for the same quality of the picture, and what the main differences between the formats are.
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2answers
295 views

How does this animated png work?

I've just received an email that contains a remotely hosted animated png. The png file is a countdown timer. Here is the URL:- https://img.kickdyn.com/57/1MfiOGVFjvmaMMHd3VZv/imgancnt.png Can ...