A super simple retina (2x, 3x) image converter.

Related tags

Tools ios image retina resizer
Overview

alt text

Retini

A super fast and simple retina (@2x, @3x) image converter.

How to use?

You can download the prebuilt application from the releases, or just download / fork the project and build it yourself.

After you've got the app running, you can drag single files, multiple files and directories to convert @3x or @2x images. Dragging is allowed in the Retini window as well as the App Icon in the Dock.

How does it work?

The resized images will be placed in the same directory as the source file. The resizing goes like this:

Generated? Drag @3x file Drag @2x file
@2x √ ×
1x √ √

The original file will never be altered, the @2x and 1x are copies. If you drag a @3x file, the 1x file generated will be generated from the (original) @3x, so no double conversion loss.

Pixel art upscaling

You can drag a file with a @1x extension, Retini will scale this to a @2x and @3x file. This is nice for pixel art, upscaling is done via the nearest neighboor filter / algorithm.

Comments
  • Pixel Art Scaling

    Pixel Art Scaling

    Allow @1x images be enlarged into @2x and @3x images. When you make pixel art you create the original size first and then upscale it to look good.

    Use the nearest neighbour filtering.

    enhancement 
    opened by JontePman 2
  • Fixed wrong image resize due to the use of backingScaleFactor instead…

    Fixed wrong image resize due to the use of backingScaleFactor instead…

    … of using the real image size in pixels

    Hi!

    If had an issue when trying to downscale images. For example, an @3x image of 180x180 px gives me: @2x => 90x90px @1x => 45x45px

    The expected results are @2x => 120x120px @1x => 60x60px

    The issue is due to the use of NSScreen backingScaleFactor to calculate the real size of the image. I have a screen with a backingScaleFactor of 1.

    I corrected the code so that we don't calculate the real image size based on the screen scale factor but by using the real image data.

    opened by jaeggerr 2
  • When quality is 10/10, @2x file size will bigger then @3x (jpeg)

    When quality is 10/10, @2x file size will bigger then @3x (jpeg)

    Maybe this is bug of NSImageCompressionFactor.

    I change the code below fix the problem.

    ResizeModel.m 164

    NSDictionary *properties = quality == 1.0 ? @{} : @{NSImageCompressionFactor : @(quality)};
NSData *data = [bitmapRep representationUsingType:fileType properties:properties];
    opened by powhu 1
  • Added PDF as input

    Added PDF as input

    Now Retini has the ability to get PDFs as input, useful with vector assets. Normally you can use PDFs directly in Xcode but it can be useful for other platforms like Flutter or React Native. Cheers! 🍺

    opened by pascalbros 0
  • Invalid color space and incorrect size

    Invalid color space and incorrect size

    @2x and @1x generated images size is often not correct ; Eg : @3x 152x152 => @2x 200x200, @1x 100x100

    Moreover the generated pngs don't keep the original colorspace. They seem to take the current screen color space.

    Find attached one of the files that causes such close_button 3x issues.

    opened by false 2
Releases(v1.3.2)
Owner
Erik Terwan
Senior iOS Developer @ MediaMonks
Erik Terwan
GitHub http://terwanerik.github.io/Retini/
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