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

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577 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 ...
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1answer
2k views

multiple png images over a single pipe to ffmpeg (no file writes to disk!)

I have a program that generates a script for gnuplot, which in turn generates a lot of png images and send it to stdout. I want to pipe these images to ffmpeg without writing them to the disk. This is ...
2
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1answer
803 views

Keep alpha transparency in indexed PNG from Fireworks when batch resizing using convert (ImageMagick)

I have a special case where I'm using alpha transparency in indexed PNGs from Fireworks to keep the file size of PNG's in an iOS game down. (That is, indexed colors like an 8bit PNG but alpha ...
2
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2answers
1k views

What meta-information is contained in an image file?

I'm wondering what information is contained in an image file like JPEG or PNG. I know that most of them contain a metadata file, but anything else other than that? Anything relates to the license ...
2
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1answer
355 views

PNG/BMP images become blurred on zoom

I recently installed a Debian Jessie desktop and when opening PNG/BMP images it all becomes blurred on zoom (in or out). With the image at 100%, everything looks sharp as expected. This happens both ...
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4answers
513 views

How do I explain to my mother how to convert a bunch of PNG files into JPEGs?

Mom asked me to scan in a bunch of photos for her previously, and I scanned them in as PNG files; namely because most any software package can read them, and they don't throw away any of the photo's ...
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2answers
2k 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. ...
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2answers
598 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 ...
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2answers
58 views

Batch Convert BMP to PNG & keep original created/modified dates

I have many screenshots from video games over the years that I want to convert while maintaining their timestamps so I can keep them chronologically organized with other images. I've already used an ...
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1answer
683 views

Make the extension .fw.png open in a different program to .png?

I want files ending in .fw.png to open in Adobe Fireworks but I want regular .png files to open in my standard image viewer program. Is this possible?
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4answers
7k views

best freeware for doing batch conversion of jpg to png [closed]

Which is the best freeware for converting jpg files in different folder to png in a batch process on a windows xp?
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2answers
10k views

How can i make a font using a .png image

I am using Font Lab Studio 5. but i dont know how to import vector file
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2answers
581 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 ...
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4answers
3k 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 ...
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1answer
377 views

Force the .png extension on Mac Screenshots

It's very easy to take a screenshot on the Mac with either Command-Shift-3 or Command-Shift-4, and they will be dumped on your desktop. One major annoyance, however, is that the files created have no ...
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2answers
2k views

lossless PNG to video in Imagemagick

As an intermediate step in creating an animation, I need to put a bunch of sequential PNGs into a movie file. I tried ffmpeg but was getting compression and artifacting even when I set quality to ...
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1answer
1k views

How to convert a photo without losing quality?

I have to convert a bmp into another standard format, without losing quality. To which format shall I convert it to?
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2answers
155 views

Software for lowering the colors in PNG-24 files

I am searching for a software that will allow me to reduce the number of colors for PNG-24 transparent (as in photoshop) files. Photoshop doesn't allow me any control over the amount of colors the PNG ...
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4answers
616 views

How do I rescale large images?

How do I reduce the dimensions of large .png images? I've tried GIMP, Paint.NET, and IrfanView, and they work well for smaller images but won't even open larger ones.
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3answers
5k views

Creating blurred PNG image to lay over text link

I have a website where I want the text links in the navigation to be blurred. When the visitor then hover over the text link it becomes clear again. My idea is to make some kind of blurred image in ...
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2answers
3k views

rescale PDF files

I have a bunch of PDF files that I have been using to make PNG files, with a width of 320 pixels. The way I have been doing this is by creating the PDFs in LaTex with a width of 4.44444 inches, then ...
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2answers
2k views

Photoshop - How to create a completely non anti-aliased image

How to create a completely non anti-aliased image... see the white dots on the body outline... by the way this thing is transparent and is being displayed on desktop via an application... ...
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3answers
9k views

how to change the png file background to transparent

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: ...
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2answers
48 views

Comparing two images without fully downloading?

I want to download a copy of a big image file(+20MB) whenever it changes. But without downloading it every X seconds and comparing it with the old version i have, how would i know the image has ...
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2answers
730 views

Export excel chart to png with certain dimensions

How do i export an Excel chart to a PNG image, defining the exact size of the resulting image file? I need to export some excel charts to PNG to put them on a html page. Due to design restrictions, ...
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1answer
341 views

FFMPEG combine PNGs of different size into movie

Is it possible to combine PNG of different heights without rescaling (like tile does)? I have pairs of images of same width, but first has height 900px and second 200px. I would like them to merge ...
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2answers
3k views

File Attributes - AI …Any clues?

Can anyone point me what does it mean when a .png file having 'AI' as File > Properties > Details > Attributes. Does it mean it made with Adobe Illustrator ? Also note that the png is 8bit image.
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1answer
5k views

Why is R having trouble rendering plots to a PNG file?

I am trying to get R to do some very basic plotting and such in UNIX, but am getting a weirdo error relating to X11, when as far as I can tell I'm not even needing X11. I have a matrix name d and ...
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1answer
565 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?
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1answer
36 views

Github Gists - Download Gist as Image File for Code Report

I have some pretty huge SQL queries as github gists and I would like to download them as images (eg PNG) in order to put them in a Word report document. I cannot find a way to do that, they just ...
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1answer
293 views

Create empty truecolor PNG with ImageMagick

How can I create an empty (transparent) PNG containing 24 bit color channels with ImageMagick? The obvious one convert -size 1920x1080 xc:transparent blank.png will create an 1bit b/w ...
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1answer
183 views

Best way to convert BMP to PNG while maintaining quality?

Is this possible convert BMP to PNG while maintaining quality? I am trying to reduce the size of some albums that are in BMP, but still maintain the lossless quality. Just tried XnConvert and setting ...
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2answers
25 views

PNG file has different colours in different programs

I downloaded an icon from Icons8. With their tool I recolored it to dark blue (#2c3e50). After unpacking and uploading the 48px icon I got the following result: As you can see the color is not ...
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1answer
533 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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1answer
51 views

Postscript to png conversion loss

When converting Postscript files to PNG, is there any loss of fidelity in the converted files? The postscript files are scanned at 1200DPI. If there is such loss, how can it be kept minimum? I'm ...
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2answers
182 views

Reducing file size of Photoshop-exported PNG files

I can export a file from PSD (photoshop) to PNG (portable network graphics) format. With an image sized 1024x768 I usually get a PNG file that's approximately 120KB. However, if I open that exact ...
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1answer
27 views

Batch Inverting .PNG Images while maintaining transparency

I have a large number of monochrome PNGs that are black on transparent. I would like to invert them to be white on transparent. I've tried using XnConvert but it doesn't maintain the transparency.
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0answers
1k views

What is @OpenWithToastLogo.png?

Background Recently, I copy-n-pasted some text from Notepad into a command line window. The copied text included a TAB character prefixing the text I copied, for example "{tab}test.exe". When I ...
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2answers
651 views

Convert PNG to Multi-page PDF

I've seen a lot of posts about how to convert a multi-page PDF to PNG but I'm wondering how I can go in the opposite direction if I have the size of each page I want made.
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1answer
41 views

I would like to batch change one colour in a group of PNGs. Mac - freeware software

I hope someone would be able to help me. I have a group of icons in png format. They are all transparent backgrounds with one colour for the actual icon. I would like to change this colour in all of ...
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0answers
69 views

ImageMagick: is there a way to get the same PNG from the same image on multiple platforms?

I have a script for converting game assets to multiple resolutions, via imagick, and when I run the same imagick commands on Mac and Windows (with the same version of imagick - ImageMagick 6.8.7-2), ...
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0answers
284 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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1answer
103 views

Most space-efficient format for image with large dimensions but few colors?

Recently I have had to scale up the dimensions of a gif image by a factor of 2, this resulted in an increase of the file size by about 8 times. While this is not a complete surprise, I can't help but ...
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0answers
708 views

.MOV video compressed with PNG has no alpha channel

I have a QuickTime file .mov with alpha channel compressed with PNG codec. What I need is to create smaller version of this file using ffmpeg. Everything works except new mov has no alpha (Adobe After ...
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2answers
1k views

Imagemagick convert making strange gif

I am trying to make a GIF from a set of PNGs (files like f0010.png). convert *0.png out.gif The GIF is coming out strange -- not looking like the PNGs, cutoff, stuff missing, etc. I tried also ...
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0answers
243 views

Render Video as png with Alpha

I have pixel art that I want to put in an animated png. I animated it in the timeline, but when I rendered it into a series of pngs, It has no partial transparency. Anyone know how to solve this?
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0answers
968 views

Set .png default compression in Photoshop CS6

Is there a possibility to set .png default compression options to "NONE / fast"? Whenever I try to save as .png, the default option is set to "smallest / slow".
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0answers
107 views

A photoshop png file all the same size generating dilemma

I have a photoshop file with layered componpents that I am animating. I need to save each layer of each element as a png file with the same dimensions (so if a box moves, 3 layers of the psd file have ...
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1answer
140 views

FileType_en_US_default instead of PNG

I just noticed that Windows Explorer (in Windows 7) shows the PNG filetype as “FileType_en_US_default” instead of the normal “PNG file” or whatever it shows in my german localization with Adobe ...
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2answers
112 views

How to know the compression level of a PNG file and whether it is lossy?

Can I know whether a PNG file was compressed and how (at least, whether it was a lossless compression) in Windows? When I open the standard file properties dialog from the Windows Explorer, I see no ...