You can also use these tools to adjust the white point within your image. We mentioned Preview's versatile mastery of multiple image formats. The great thing is the application can not only open images in all these formats, but can also shift images between them, doing so is ever so easy:. Preview understands more image formats than you will see in that list. To explore these just hold down the Option key when you click the drop-down format item. Share Pin Email. Johnny Evans is a former freelance contributor to Lifewire who specializes in iPhones, iOS, and Apple TV and blogs daily about it at other publications.
Updated October 09, You will learn how to:.
Scale the sheet size for printing
Preview is compatible with a variety of image formats:. From left to right the default set includes:. Sidebar controls: These let you use and navigate the Sidebar, which can be useful if you are working through a multipage PDF.
Magnification icons : Two magnifying glass icons let you zoom in and out of the image. You can also use Command Minus or Command Plus to accomplish this. Share button : This lets you share the current image in various ways. Highlight: This drop-down menu becomes active when you open a PDF with a text entry bar.
Its primary use is to insert a signature into PDF documents. Rotate: Tap this to rotate an image. Hint: Hold down the option button when you use the Rotate button to rotate in the opposite direction. Search: This lets you search through text in a PDF. This tool is not available here when working with images.
The Selection Tool : This lets you choose to select an item using a Rectangular or an Elliptical tool. It also provides Lasso and Smart Lasso selection tools, on which more below. When working with a PDF this becomes a rectangular selection tool. Instant Alpha : For some image types you can use this tool to automatically select the background or other objects within an image. Just click the area you want to select and drag your cursor.
The more you drag the cursor the more of the image will be highlighted in red to show you have selected it. Shape Tools : You can add rectangles, stars, and other shapes. There is also a Loupe tool which you can use to magnify an area of your image, just drag the green handle to decrease or the blue handle to increase magnification. Sketch: Sketch shapes with this tool. If Preview recognizes a shape you draw it will choose that instead. On Macs with a Force Touch touchpad, a second Draw tool appears.
This is force sensitive and lets you draw thicker shapes in reaction to the pressure of your touch. Text : Tap this box to enter text, then drag the text to where you want it to be. You can edit font, size, and color using the Text Style tool to the right of this tier of the toolbar. Sign : This tool lets you sign documents if possible in the document you are using. In the page s wide and page s tall boxes, enter the number of pages on which you want to print the sheet.
On the Layout tab, under Print , in the Scale box, enter the percentage to reduce or enlarge the sheet. Set page margins. Change column width or row height. Fix data that is cut off in cells. Print with landscape orientation. Print headings or titles on every page. Insert, move, or delete page breaks in a sheet. On the File menu, click Print.
How to Resize a Photo on Mac
Here is Facebook image dimensions. Go to the Tools menu and select Adjust Size. This window opens and you can set the width or height. Both are linked so if you change one then the other changes.
Print a sheet on a specified number of pages
It prevents the image from becoming distorted when the size changes. Sometimes you cannot get the optimum dimensions using the resizing tool. Click and drag a box over the image and adjust it so that it is the right size. Now that the image is the right size, go to the File menu and select Export. The resulting file size is shown below and this image will be 61 KB. This is significantly smaller than the KB of the original image.
If we were using this on a website or blog, it would enable the page to load much faster because it is one sixth the size of the original. It is a good idea to save the image twice with two different quality settings.
Pages-export to pdf creates massive file size
In this case it was exported with the quality setting three notches and two notches from the end. This resulted in 61 and 80 KB file sizes. It is faster to download and display and speeds up web pages. If you want to know more about optimising images for use on your blog or website, read How to speed up your website by optimising the images.
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Image files scrubbed clean
Resize your photos to these: Landscape - x Portrait - x Square - x Best images sizes for the web This depends on the website, or more specifically, the theme that a website uses. Check the size Double click a jpg image on the disk and it opens in Preview.
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Find what size you need It is a good idea to find what size image you need.