can i make a .png image bigger?

guilleface

hi all, i do my images in the inkpad app for iPad, but the work area is not big, i made a 1024x768 background but i need this image to be 2048x1530 for iPad 3, whats the best way to scale up this .png image without losing quality? thanks

gyroscope

@guilleface

Hi, for interest, the interpolation algorithms for enlarging images were created only about 6 or 7 years ago, and programs just to do that, cost hundred of dollars....

Anyhow, cut to the chase; there are plugins for Photoshop, etc., nowadays, and still there are stand-alone applications; but also free online image enlargement sites.... here's one I found:

http://reshade.com

TesseractEngine

A quick play with Inkpad seems to indicate that the maximum image dimension is 1536 x 1356. Enlarging a raster image, like a PNG, will always result in some image degradation. Fortunately, you have much better options with PDF and SVG, which can be enlarged to any size...and Inkpad, being a vector drawing program, exports to both of those.

You will need another graphics application to change your PDF or SVG to a PNG though! Inkscape is a good viable free choice.

guilleface

thanks , i saved as .svg and opened in inkscape for mac, only 2 problems , one is that all my layers are all in 1 now, and my custom text words changed to regular text, but i think i can manage to change that,but hopefully inkscape for iPad change the work are bigger because i know how to use that one better.

gyroscope

Useful info from @TesseractEngine but just to clarify, if your image is a raster image, it doesn't matter what filetype you change it to or from, it'll still lose quality if the size is made larger than its actual (original) size. (Example: a 1024 x 768 image at 72ppi, enlarged to 2048 x 1556, without any enlargement algorithms, will result in your image being half the resolution when displayed in GSC.) So you need a special program to keep the quality when enlarged from its original size.