Questions tagged [png]
PNG (portable network graphics) is a popular image format that supports 32-bit colors and transparency.
262
questions
0
votes
1answer
36 views
Decode WebP with FFmpeg
I would like to convert this file:
https://gstatic.com/webp/gallery/1.sm.webp
To PNG or JPG with FFmpeg. I tried this:
ffmpeg -i 1.sm.webp a.png
but and error was produced:
ffmpeg version git-...
0
votes
0answers
14 views
PNGs are displayed small and can not be zoomed in gThumb
I just installed gThumb in ubuntu which works fine except that it does not display PNG images correctly. I have an HD PNG image which when opened with gThumb appears as if it's a 100x100 thumbnail or ...
0
votes
1answer
41 views
ffmpeg - encode file for iPad (xlib264) and add thumbnail in one go
I would like to put some videos on iPAd with Cover/Thumbnail image
I can do that in two steps. That seems to work, but I'm not able to encode and add image at the same time.
(Win 10 and the latest ...
0
votes
1answer
42 views
Set display color of transparecy in PNG
Is it possible to set the color that the transparency of a PNG should be displayed with, if viewed standalone?
My motivation is: if I have a PNG with white text and transparency and I show this image ...
1
vote
0answers
70 views
How to save high resolution charts .png in Excel for Mac?
Is there any way to save a chart from excel to a high resolution png-file on office for Mac? I have tried to copy them into Word as well as saving them as a html-file, but the quality becomes really ...
0
votes
1answer
60 views
Is it possible to compress alpha and RGB channels of PNG sequence separately with FFmpeg?
Suppose I have a sequence of 32-bit (RGBa) PNG files. Is it possible to compress the RGB channel with one codec and the alpha channel with another? For example, if I had the RGB and alpha as separate ...
0
votes
1answer
66 views
How to convert the svg outcome to png?
I am using this package to generate a sequence diagram
https://github.com/francoislaberge/diagrams
Here is a very simple sequence diagram file:
Alice->Bob:Hello
I ran this command
diagrams ...
1
vote
1answer
81 views
Text highlight in image
I have articles of newspaper in png format, want to highlight these images similar to pdf text, is there any possible tool or method to do it?
I have syncronized this images in my desktop to cloud ...
0
votes
0answers
22 views
Colour change occurs when exporting png/jpeg compared to h.264 in after effects
when I'm exporting an animation in after effects the colour seems far darker than when I'm exporting a still frame. Using PNG/JPEG for frame and H.264 for the animation. Any way I can make them come ...
0
votes
0answers
49 views
How do I make my PNGs have transparent thumbnail in Windows File Explorer?
Example provided below of the issue (where a black PNG is all black)
0
votes
0answers
34 views
“Canonicalize” PNG files
I am looking for a way to process a set of PNG files in such a way that if they contain the same image data, the files will be byte-by-byte identical too.
Is there a quick and easy, automatable way ...
2
votes
1answer
177 views
How to convert an in-line image to a floating image in Word?
I would like images that I insert into Word documents to have white resize handles and for it to be possible to group them with other images:
Currently, when I insert an image into a Word document, ...
1
vote
1answer
62 views
How can I losslessly convert .webp images to .png?
I have a bunch of .webp images that I want to convert to .png. How can I do that without introducing any loss? GUI or CLI doesn't matter
2
votes
1answer
71 views
How to determine the color mode of a .png file
How do you determine the color mode of a .png file? So if its black and white (grayscale) vs. RGB vs. RGB+transparency?
Can you do this without installing software? I am on windows (though I'm sure ...
0
votes
1answer
64 views
FFMPEG image concatenation giving different results based on colors in PNG file
I am using the following code to take a number of PNGs of varying durations and the overlaying them over another video.
ffmpeg -safe -0 -f concat -i overlap-png.txt
-i mainvideo.MOV -...
0
votes
1answer
111 views
Difference between GIMP Indexed color mode and Imagemagick -colors or -remap
My task is to reduce size of scanned text document into .png with acceptable quality loss.
My procedure consist of those steps:
Raw images are scanned in tif format and processed by ScanTailor (...
0
votes
0answers
25 views
Gifsicle: Multiple image sources
With Gifsicle, is it possible to combine multiple images (PNG) into a gif? (with variable delays)
I was thinking more like what FFmpeg or Gifski can do.
0
votes
1answer
91 views
How can I increase the resolution of a text in a PNG file?
I have images (PNG) with text in them, but if you were to zoom it would become pixely. How can I fix this? I even have a PDF where if you zoom as much as you can you still can't see the pixels. But if ...
3
votes
2answers
159 views
How to convert multiple images at once from JPEG to PNG?
How can I convert multiple images at once from JPEG to PNG?
The JPEG to PNG converter on my MacBook does not convert many images quickly at once. My option is now: Convert JPG to PNG - JPG4PNG
4
votes
2answers
157 views
Everytime I convert PDF to PNG it becomes more pixely. How can I fix it?
The pdf file I use is high quality, and if you were to zoom at a letter as much as Adobe Reader can handle, you still find it difficult to look at a blocky pixel at the edges of a letter. But when I ...
1
vote
0answers
6 views
Is it possible to improve the pngquant output in this case?
Here is part of the original image
Here is the output from pnqguant with quality set to 50.
You can see the artefacts in the shadow area of the compressed image is very prominent.
Is there any ...
7
votes
2answers
169 views
Can I crop an image without fully loading it into memory?
I managed to generate a PNG image with a fractal.
The image is 65,536 pixels high and 65,536 pixels wide. It’s too big to be decoded into memory and displayed. It has probably a lot of unused space ...
0
votes
1answer
21 views
Can I pad the size of an image without changing the dimensions or content?
I am using an internal tool at my workplace that has a minimum image file size. Unfortunately, I have a use case where I need to upload and interact with image files that come in below this limit.
...
2
votes
2answers
442 views
How to create an image with plain text?
You open a new .txt file, you write the instructions there for an image and when you save it as .png it should present you an image. How the image looks is not important. I'm just curious if I could ...
0
votes
2answers
120 views
Export Diagram from Word as HighRes PNG?
I have this abysmal word document (docx) where someone put an UML diagram in (technical drawing) which is so large, that 500% zoom is not enough to read the labels on an A4 page.
Thus, I tried to ...
0
votes
1answer
62 views
Resize png smaller without loss of quality?
I am working with textures that I purchased in Second Life. Most of these are 1024x1024. However, i create children's clothing, when means most of these are in too large of a format for said ...
0
votes
1answer
658 views
FFmpeg - Adding watermark on an image
I used this command to add a watermark on an image:
ffmpeg -i input.png -i watermark.png -filter_complex overlay=15:15 output.png
But I got this error:
[NULL @ 0x7a1403f800] Unable to find a ...
0
votes
0answers
41 views
Is replacing PNGs with JPGs the solution to generating reliable images in PDF files?
I generated a PDF from a document that contains many images, mostly JPGs, but some PNGs.
In the doc (Libre Office .odt), the page in question looks like this:
When I "exported" the document to a PDF,...
1
vote
1answer
51 views
Create higer resolution icons from existing png
I have from a very old project a set of icons but I don't have the psd I made. I have 72x72 material design icons like this
Is there a way to properly convert this png icons to higer resolutions?
1
vote
3answers
1k views
Does PNG bit-depth conversion from 8-bit to 32-bit increase quality?
An image is converted from 32-bit to 8-bit. Is any information lost after converting it back to 32-bit?
1
vote
0answers
54 views
Is it possible to render and/or recover half of an apparently damaged PNG file?
I have a chunk of a PNG file, missing its end. An unknown amount of data from the IDAT chunk is missing, as well as the IEND chunk. I've inspected the IHDR and it looks completely fine, correctly ...
1
vote
1answer
117 views
Why binary files like this snippet of a PNG has all this whitespace in it
Here is a snippet of the first part of a PNG file viewed just by opening it up in Sublime Text and viewing the hex code directly.
8950 4e47 0d0a 1a0a 0000 000d 4948 4452
0000 02e7 0000 0155 0806 0000 ...
0
votes
1answer
573 views
ffmpeg resize PNG image sequence using alpha padding
I am trying to resize a sequence of PNG images using alpha padding (the images are already surrounded by alpha pixels). The following command resizes how I want, but it adds black pixels:
ffmpeg -i "...
7
votes
4answers
5k views
How do I convert a TTF into individual PNG character images?
I want to generate a .PNG image for every glyph in a .TTF font file. How do I do that?
0
votes
1answer
69 views
Convert bmp to png and black colors to alpha
I exported some sprites from the game Half-Life; however, they seem to have tones of black instead of the alpha channel. For example:
How do I convert the black colors into alpha/transparency?
0
votes
0answers
122 views
How to extract/convert hundreds of .mov files into PNG image files,automatically creating a folder for each group of PNG files extracted
I need to batch extract and convert hundreds of .mov files into PNG image files, automatically creating a folder for each group of PNG files extracted. (I’m working on Windows 10). Can you suggest to ...
0
votes
1answer
555 views
Irfanview: How to stop gif images from overriding resize settings
I have set my Irfan View to automatically Scall all Images to window size. This works great for normal images. However I have noticed that, instead of fitting gifs into the window the same way it does ...
0
votes
0answers
90 views
How do I use ffmpeg to hide a png randomly in one frame of the video?
I like to hide little Easter eggs in all my videos, but it is rather tedious. Is it possible to hide a png in one frame preferably at random locations/orientations within said frame using ffmpeg?
-2
votes
1answer
147 views
What color is this PNG?
This: https://user-images.githubusercontent.com/23437045/33275828-c96e8810-d3a4-11e7-9e36-f8fed85b6203.png
That's what QuickLook shows:
This is what Preview shows:
This is what Firefox shows (...
1
vote
4answers
2k views
I am seeing animated PNG files on some sites in lieu of GIFs. How can I save/download them?
I know how to save a GIF, it's super easy. Just right click and save. Voila! But with these new animated PNG's, I haven't the foggiest. Without using some sort of screen scrape where I'm grabbing the ...
0
votes
1answer
671 views
Ffmpeg - save bmp file as different extension
I want to save a bmp file as 1.mp4 using Ffmpeg, how to achieve it?
The question is very simple. I have some source file, lets call it source.png and I want to encode it as bmp, but to save it as a ...
0
votes
1answer
625 views
Split .png into multi-page pdf with imagemagick based on whitespace
Currently I have a hand written image darkened with
convert -level 50x100%
It contains chunks of text separated by whitespace.
Simply printing the image would split handwriting in half.
Is there a ...
3
votes
1answer
760 views
Can PNG images contain embedded thumbnails like JPG files?
Can PNG (Portable Network Graphics) image files contain embedded thumbnails similar to how JPG files can?
1
vote
3answers
8k views
How do I export a Word document as a PNG?
I have a Microsoft Word 2010 document which I want to save as a .png image file, so I can include it as part of a PowerPoint slide.
In Powerpoint, there's a built in "Save As" option for exporting ...
49
votes
3answers
8k views
Invisible PNG image layer that is only visible as a background
I have recently came across a very peculiar image, with strange properties. The image is in PNG format and just shows a simple bird with a transparent background. My friend sent me the image with ...
0
votes
1answer
381 views
Convert SVG image to PNG with magnification
How ca I convert a SVG image to a PNG image with magnification and without pixelation?
I have tried to open with Paint.NET (with a plugin) and GIMP but I did not succeed. The final image is not ...
-1
votes
1answer
476 views
How can I convert a .png image to .pdf with OCR text? [closed]
I have a .png file that is a screenshot of an article I found online. I would like a PDF version of it, with all the text selectable.
Are there any apps or tools that do that?
0
votes
2answers
994 views
Render HTML email as PNG
I have an email message in my IMAP inbox. It's HTML email that makes use of fonts, tables, images and such. How do I convert this email message into a PNG image that looks reasonably close to what I ...
0
votes
1answer
1k views
Png picture in Excel distorted when exported to pdf
When I insert a png picture with transparent background in Excel, it looks good in sheet and print preview, but after save in pdf format, the lines gets distorted.
The problem occours using a pdf ...
2
votes
3answers
243 views
How do I open .ai files on Windows 8.1?
Specifically this file
https://stock.adobe.com/stock-photo/flux-vague-de-dollars-illustration/35571058
I tried to rename the file with .pdf extension, but FoxIt would not open it.
I tried to install ...
