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41. Changing image resolution with Resize

Image resolution change is needed “for screens”, that is, when posting your final artwork on social network websites, and “for print”, that is, for printing your final artwork.

First of all, we are going to look at the resolution setting for screens.

From ①the Tool Selection window, select ②Canvas tool.

Select ①Resize.

Turn on ①Keep Aspect Ratio.
Resolution change for screens can be done by selecting ②Pixels.
For screens, you will be changing the pixel count (px), instead of dpi.
Change ③the Width (px) from 768 to 50. Once you are done, tap on ④✓ to finish.

Setting the pixel count to a significantly lower resolution worsens the image quality.
If you decrease the pixel count, you will get more maximum layer limit. Once you reach your maximum layer, try decreasing the pixel count. Also, decreasing the size of the canvas can help you work faster, and make the files take up less space on your device. Now, you can adjust the size of the screen with pixel count (px), and not with dpi.

Next, we will cover resolution settings for printing.
For artwork you would like to print, you can change the canvas size in mm and resolution (dpi). Set the dpi to minimum 300 for clean printed results. Dpi refers to dots per inch (25.4mm).
Caution: when requesting a printing shop to print your artwork, make sure to be aware of your dpi and size. It is extremely difficult to change the dpi afterwards.

Turn on ①Keep Aspect Ratio. Changing resolution for artwork to be printed can be done by first selecting ②Print.
In print, select dpi. Adjust ③the dpi from 350 to 50.
Once you are done setting the new value, tap on ④✓ to finish.

Decreasing the dpi as shown will worsen the image quality.
Next, we will cover reduction calculation method.

Turn on ①Keep Aspect Ratio. Set the size: ②Width(px) from 768 to 150.
Tap ③Linear, to select a calculation method from Sampling, Linear, and Trilinear.

This is a comparison image.
From the left, the quality changes from low to medium to high. Normally, we suggest choosing Trilinear (since Trilinear uses hardware functions, it may not be applicable in some devices).
Next, we will cover magnification calculation method.

Turn on ①Keep Aspect Ratio. Set the size: ②Width (px) from 50 to 1,500. Tap ③Linear, and choose a calculation method from Nearest Neighbor and Linear.

Here is an image quality comparison between canvases processed by Nearest Neighbor and Linear. Normally, it’s better to choose Linear.

Chapter

  1. Introduction
  2. Let's Take a Look at Some Sample Artwork
  3. Start Creating an Artwork
  4. Toolbar and Tool Selection
  5. Do Your Draft Sketch by Hand
  6. About Layers
  7. Let’s Trace
  8. Undo and Eraser
  9. Fine Tuning Using the Lasso tool
  10. Check by Reflecting Horizontally
  11. Select Colors in the Color window
  12. Use Color Fill for the Undercoat
  13. Turn Clipping On
  14. Making a Gradation (Shading)
  15. Quick Eyedropper Function
  16. Create Highlights and Shadows
  17. Paste a Texture
  18. Let's Merge Layers
  19. Sign Your Artwork
  20. View Your Artwork
  21. Post Your Artwork
  22. Share Your Artwork
  23. Remove-Ads Add-on
  24. Add Color to the Analog Image using Multiply
  25. Stabilizer
  26. Let’s try using Screentone
  27. Clipping is convenient
  28. Making a Selection with the Magic Wand
  29. Selection Layer
  30. Changing the color with Alpha Lock
  31. Save Layer as Transparent PNG command
  32. Save Canvas as Transparent PNG command
  33. Naming your layers to manage them
  34. Putting texture to the floor with Perspective Form
  35. Skirt with Mesh Form
  36. Entering text with Text tool
  37. Creating manga with Frame Divider tool
  38. Enlarging the canvas with Canvas Size
  39. Cutting off the canvas with Trim
  40. Canvas creation with resolution (dpi) specification
  41. Changing image resolution with Resize
  42. Texture with Material tool
  43. Cut, Copy, Paste
  44. Ruler: Straight Ruler
  45. Ruler: Circular Ruler
  46. Ruler: Elliptical Ruler
  47. Ruler: Radial Ruler
  48. Ruler: Mirror Ruler
  49. Ruler: Kaleidoscope Ruler
  50. Ruler: Array Ruler
  51. Ruler: Array Ruler for Perspective
  52. Ruler: Perspective Array Ruler
  53. Drawing Tool: Straight Line
  54. Drawing Tool: Rectangele
  55. Filter: Brightness & Contrast
  56. Filter: Hue Saturation Lightness
  57. Filter: Color Balance
  58. Filter: Extract Drawing
  59. Filter: Change Drawing Color
  60. Filter: Mono Color
  61. Filter: Gray Scale
  62. Filter: Black & White
  63. Filter: Posterize
  64. Filter: Gaussian Blur
  65. Filter: Zooming Blur
  66. Filter: Moving Blur
  67. Filter: Mosaic
  68. Filter: Stroke (Both)
  69. Filter: Stained Glass
  70. Filter: Wet Edge
  71. Filter: Glow (Inner)
  72. Filter: Stroke (Outer)
  73. Filter: Drop Shadow
  74. Filter: Parallel Gradation
  75. Filter: Concentric Gradation
  76. Filter: Radial Line Gradation
  77. Filter: Auto Paint
  78. Filter: Anime Background
  79. Filter: Manga Background
  80. Filter: Channels Shift
  81. Filter: Sphere Lens
  82. Filter: Table
  83. Filter: Blur Frame
  84. Switching devices / transferring data (with Dropbox)
  85. Switching devices / transferring data (with SD card on Android)
  86. Switching devices / transferring data (with PC on iOS)
  87. Settings window details
  88. Bucket tool details
  89. Blend mode details
  90. How to upload transparent PNG onto Twitter
  91. Notes About Tracing