I downloaded this svg map and used ImageMagick to convert to PNG format. However, my output PNG images don't look very well: the white borders between countries almost don't show. On the other hand, the rendered versions on the Wikimedia site look great.
Is there any option I can pass to ImageMagick to prioritize borders?
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I am Working on a small Image comparing script where the reference images are generated as SVGs and the compare images are PNGs.
I can transform the SVG files to PNG (using svglib and renderpm) but can´t specify the size I want them to be generated as(renderscale seems to cut of a part of the picture), but I need to get them to the same size for the compare functions and resizing the pngs nullifyes the whole purpose of vector graphics in itself. Any Ideas?
Regards a python noob
It seems that with potrace installed, I can just run magick convert x.png x.svg or magick convert x.jpg x.svg.However this just returns a deformed image in black and white, and I need the svg image to be in full color. Additionally, I really need the file format to be svg because svg images are small and portable, and I don't have a lot of disk space on my server.Does anyone know how to convert png/jpeg to svg while retaining color?
I'm looking for an all-in-one solution for processing web images
Resizing
Cropping
Save as WEBP / JPEG / PNG
Drawing simple rectangles
Adding text
Reducing colors (quantization) for PNG
The only thing I'm not clear about is PNG quantization. Currently I'm using pngquant which works great, but I'd prefer to do everything in one place.
I see the SkiaSharp has SKImage.Encode() which takes a quality parameter. However there's no explanation as to what it actually is. Will this give me color quantization for PNG files? If not, is there something else in the library to do this?
Here is an SVG image I want to convert to PNG with librsvg in my program.
This is a PNG version of the SVG exported from Inkscape:
This is a bitmap of the same SVG exported with librsvg:
Only the white portions of the image are exported. The black portions, despite being well-defined in the background, appear transparent.
This problem occurs whether I use the librsvg API or the program rsvg-convert. You can use the W3 validator to see that the SVG's markup is valid.
I notice the same thing happens in the thumbnails of the SVGs in my file browser. Perhaps they're using librsvg?
Upon digging into the files I discovered that, for some reason, the fill of the black portion was set to "fill:currentColor". I don't know where that came from, but changing it to "fill:#000000" fixed the problem.
World Map Images in Adobe Illustrator CS5
I have an image Map in illustrator CS5 which i want to save in GIF so as to reduce its size for web use. But when i save it, the map boundaries are having some white pixels all along the map boundaries of map.
I really dont know why has happened to it, but cant save it in Png-8, png-24 formate due to size constraint.
Any meaningful answer will be highly appreciate and thanks in advance.
Is your background a non-changable color? Maybe you can save the image with the same color as a background.
The problem is gifs don't support true transparency.
If this doesn't work can you provide the image you are trying to save (gif and png, I don't have AI right now)? Maybe there will be something I can do about the size or clearing the gif's edges.
transparent GIFs don't have an 8-bit alpha channel, like PNG does: a pixel in a GIF is either there, or it's not: if it's there, you can't see through it. This often means that an edge between transparent and non-transparent areas looks blocky.
There are two ways to deal with this... either use a PNG 24 (and the Illustrator Save for Web feature will help you to make it smaller), or in Illustrator create a background color layer behind your image before you export to GIF. If this background color layer is the same as the website you put the image on, the edges will blend nicely.