How To Change The Size Of A Photo On Mac For Twitter

You can also choose to edit the size of multiple images on your Mac at once. Here's what you need to know to resize your photos on a Mac computer. Visit Business Insider's homepage for more stories.

  1. How To Change The Size Of A Photo On Mac For Twitter Posts
  2. How To Change The Size Of A Photo On Mac For Twitter Users

Preview User Guide

Click File Options Advanced. Under Image Size and Quality, select High fidelity in the Default resolution list. Twitter header size: 1500px by 500px. Twitter profile picture size: 400px by 400px. Also, these photos can be in any of the following formats: JPG, GIF, or PNG. (Twitter does not support animated GIFs for profile or header images.) These are Twitter’s recommended dimensions for a Twitter header image and profile picture.

You can resize or rotate an image opened in Preview to fit into a particular spot. You can also reduce the file size to save disk space or to download an image more quickly.

Change an image’s dimensions

  1. In the Preview app on your Mac, click the Show Markup Toolbar button (if the Markup toolbar isn’t showing), then click the Adjust Size button .

  2. Enter new values for width and height, or click the “Fit into” pop-up menu and choose a size.

    • Resize the image by a percentage: Choose “percent” from the pop-up menu next to the Width and Height fields, then enter the percentage in those fields.

    • Force the image to keep its original proportions: Select “Scale proportionally.” If you change either the width or height, the other value changes to maintain the proportions. If you choose a size from the “Fit into” pop-up menu, the image’s width or height may be smaller than the chosen size to maintain the proportions.

    • Make the image’s dimensions smaller without losing any detail: Deselect “Resample image” before changing the width or height.

Size

How To Change The Size Of A Photo On Mac For Twitter Posts

Tip: To resize multiple images at the same time, display the images in the same window, select them in that window’s sidebar, then choose Tools > Adjust Size.

How

Rotate or flip an image

  1. In the Preview app on your Mac, open the file you want to change.

  2. Do any of the following:

    • Rotate an image: Select the image, then click (or use the Touch Bar) to rotate the image to the left. Continue clicking to keep rotating.

      To rotate the image to the right, press and hold the Option key and click until you’re done rotating the image.

    • Flip an image: Choose Tools > Flip Horizontal or Flip Vertical.

Tip: To rotate or flip multiple images at the same time, display the images in the same window, choose View > Thumbnails, select them in that window’s sidebar, then choose Tools > [Rotate or Flip].

Reduce an image’s file size

How to change the size of a photo on mac for twitter posts
  1. In the Preview app on your Mac, open the file you want to change.

  2. Choose Tools > Adjust Size, then select “Resample image.”

  3. Enter a smaller value in the Resolution field.

    The new size is shown at the bottom.

Tip: To reduce the file size of multiple images at the same time, display the images in the same window, select them in that window’s sidebar, then choose Tools > Adjust Size.

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How To Change The Size Of A Photo On Mac For Twitter Users

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