Adjust default image scale for PPTX from 2.5 to 2

CHANGELOG.md

@@ -10,6 +10,7 @@
 
 - Update Dock icon in preview mode on macOS to suit for Big Sur ([#380](https://github.com/marp-team/marp-cli/pull/380))
 - Update an icon of presenter view in bespoke template ([#384](https://github.com/marp-team/marp-cli/pull/384))
+- Adjust default image scale for PPTX from `2.5` to `2` ([#385](https://github.com/marp-team/marp-cli/pull/385))
 
 ### Fixed
 

README.md

@@ -192,7 +192,7 @@ marp slide-deck.md -o [email protected] --image-scale 2
 
 > :information_source: `--image-scale` is not affect to the actual size of presentation.
 >
-> It is also available for PPTX conversion. By default, Marp CLI will use `2.5` as the default scale factor in PPTX to suppress deterioration of slide rendering in full-screen presentation.
+> It is also available for PPTX conversion. By default, Marp CLI will use `2` as the default scale factor in PPTX to suppress deterioration of slide rendering in full-screen presentation.
 
 ### Security about local files
 
@@ -462,7 +462,7 @@ If you want to prevent looking up a configuration file, you can pass `--no-confi
 | `html`            |      boolean \| object      |        `--html`        | Enable or disable HTML tags (Configuration file can pass [the whitelist object] if you are using Marp Core) |
 | `image`           |       `png` \| `jpeg`       |       `--image`        | Convert the first slide page into an image file                                                             |
 | `images`          |       `png` \| `jpeg`       |       `--images`       | Convert slide deck into multiple image files                                                                |
-| `imageScale`      |           number            |    `--image-scale`     | The scale factor for rendered images (`1` by default, or `2.5` for PPTX conversion)                         |
+| `imageScale`      |           number            |    `--image-scale`     | The scale factor for rendered images (`1` by default, or `2` for PPTX conversion)                           |
 | `inputDir`        |           string            |   `--input-dir` `-I`   | The base directory to find markdown and theme CSS                                                           |
 | `jpegQuality`     |           number            |    `--jpeg-quality`    | Setting JPEG image quality (`85` by default)                                                                |
 | `keywords`        |     string \| string[]      |      `--keywords`      | Define keywords for the slide deck (Accepts comma-separated string and array of string)                     |

src/converter.ts

@@ -207,7 +207,7 @@ export class Converter {
           template = await useTemplate(true)
           files.push(
             await this.convertFileToPPTX(template, file, {
-              scale: this.options.imageScale ?? 2.5,
+              scale: this.options.imageScale ?? 2,
             })
           )
           break

src/marp-cli.ts

@@ -144,7 +144,7 @@ export const marpCli = async (
           type: 'string',
         },
         'image-scale': {
-          defaultDescription: '1 (or 2.5 for PPTX conversion)',
+          defaultDescription: '1 (or 2 for PPTX conversion)',
           describe: 'The scale factor for rendered images',
           group: OptionGroup.Converter,
           type: 'number',

test/converter.ts

@@ -533,9 +533,9 @@ describe('Converter', () => {
           expect(write).toHaveBeenCalled()
           expect(write.mock.calls[0][0]).toBe('test.pptx')
 
-          // It has a different default scale x2.5
+          // It has a different default scale x2
           expect(setViewport).toHaveBeenCalledWith(
-            expect.objectContaining({ deviceScaleFactor: 2.5 })
+            expect.objectContaining({ deviceScaleFactor: 2 })
           )
 
           // ZIP PK header for Office Open XML