To get the Print Size functionality to show the physical size of a print document on screen, follow these steps:
Let w be the width of your screen in cm (obviously you need to measure this with a ruler).
Let x be the width of your screen in pixels (find this in your display settings)
Screen resolution = x / w. Round the value to the nearest two decimal ...
This answer is for a free software solution, as requested.
You can upscale without anti-aliasing using GIMP which is free and Open Source.
Open the image in GIMP and from the main menu choose Image > Scale image, and set the Interpolation to "None". Change the size as required and hit Scale.
Note: For Paint.NET or other programs that don't have ...
When you upscale from a very small image, be sure to only enlarge by multiples of the original image size. So, if you start with a 30x30 pixel image, enlarge to 60x60, 90x90, etc. Enlarging to a size that isn't a multiple will force the software to split pixels unevenly, even if anti-aliasing is turned off. This is less important with larger source ...
I believe i found the answer I wanted: http://www.justskins.com/forums/how-do-i-resize-181738.html
You can change the default interpolation method in preferences. Choose Nearest Neighbour for no anti-aliasing.
You may want to change it back to Bicubic when you´re done, however.
I changed my settings in paint.net to nearest neighbor when doubling the ...
Since You have illustrator 2019
=> Select the object and go to Select - Start Global Edit
=> and do whatever you want and it'll reflect to other objects but keep it mind that don't forget to Start global edit again if you change the object
=> note my global edit was for rectangle and i tried to change circle and it's failed for circle! just start global ...
As I mentioned in my comment, it's probably too late now, but if you had turned the graphic into a symbol, and used that symbol in your layout, then an edit to the symbol would update all instances automatically. This is something to remember for future projects perhaps.
But what's done is done, and you still need a solution.
You could use the Direct ...