Web Image Collector v.2.5 Web Image Collector is the perfect tool for downloading thousands of images from the web. Simply enter a web site address (URL) or search keywords, and within seconds you will see numerous thumbnails of downloaded images. How to Resize Pictures (for Macs) In this Article: Resizing an Image in Preview Cropping an Image in Preview Community Q&A Resizing an image on your Mac is simple with Preview, a free image utility that comes pre-installed on OS X. Preview helps you crop images easily and adjust their dimensions without having to install additional software.
A lot of us will unanimously vouch that iPhoto 11 is the best way for Mac users to manage, edit, and share photos, but some Mac users may not take enough photos to warrant purchasing or bothering with the program. In addition, you may simply need to quickly resize images without bothering to open iPhoto, which sometimes can mean opening a huge library of thousands of images.
For more streamlined purposes, Apple’s default OS X applications, Preview and Mail, and a free lite version of a third party application called ResizeIt may suffice. If you, on the other hand, need to do batch resizing of images, check out my article5 Quick & Easy Mac Automator Hacks for Digital Photos5 Quick & Easy Mac Automator Hacks for Digital PhotosRead More on using Automator for this purpose.
Resizing In Preview
By default, when you double-click on an image on your Mac, Preview is the application that opens it up. What you may not know is that it’s also a good application for resizing images. To do so, open an image into Preview, and click Tools > Adjust Size in the menu bar.
The drop-down window will provide you information about the dimension and resolution size of the image. For images you’re going to post for viewing on a website, the resolution size 72-150 pixels is adequate. For printing purposes, 240 to 300 pixels should be used. You should manually type in the dimension for resizing your image.
Or you can use one of the presets provided in Preview. It used to be that 640 x 480 pixels was the standard size for posting images on the web, but with many people viewing the web on widescreen monitors and small mobile phones, you might need to consider other sizes, such as 800 x 600 or the smaller 320 x 240. Unfortunately, Preview doesn’t allow you to save custom sizes as a preset. If you have a custom size you need to regularly use, create an Automator workflow5 Quick & Easy Mac Automator Hacks for Digital Photos5 Quick & Easy Mac Automator Hacks for Digital PhotosRead More or use ResizeIt described below.
Caution: when you resize images in Preview it will not give you the option to save the original of your image. So you need to either make a duplicate copy of the photo before resizing, or select Save As to make sure you’re saving the resized image as a separate file.
Resizing In Mail
If you want a super fast way to resize an image(s), simply drop it into your Apple Mail application and mail it. Done. Mail even provides you with options for resizing.
At the bottom of the composition box, Mail will tell you the dimensions of the resized photo before you mail it. You can change it to Small, Large, or Actual Size, provided the recipient of your email has a fast enough Internet speed to download a large size image file.
The great thing about using Mail to resize an image is that it doesn’t resize your original. It makes a copy and then resizes it. However, if you try to drag the image out of your drafted email, it will not be the resized version.
Resizing In ResizeIt
If you don’t want to haul out iPhoto or Photoshop to resize an image, and if you need to do some quick batch resizing of images, a small free application, ResizeIt available in the Apple Mac Store, may do the trick. Now I must say, ResizeIt could use some work, although it does what it says it will do.
The best way to use ResizeIt is to select, then drag and drop one or more photos onto the ResizeIt icon in your Dock. From there you will be presented with a dialog box in which you configure the settings you need. Be sure to leave the Overwrite Files box unchecked if you don’t want to resize your original image(s). If you leave the “Choose the folder to save images” unchecked, ResizeIt will resize, save, and put your images into a folder for you.
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You can also save various sizes as presets. The application worked OK for me. I do think however that the pixel boxes should start with “W” and then “H”, for that’s typically how dimensions are set in image applications. The first number is usually the width and the second is height. But ResizeIt is a free application, so not much to complain about. It’s a useful program for quick batch resizing.
Finally, if you click on Script > Generate Droplet, ResizeIt will produce an AppleScript script that you can save as a droplet application. It‘s sort of like creating an Automator application for resizing images. So for example, if you regularly need to resize photos to a particular size, like 800 x 600, then you simply create the preset in ResizeIt, and then have the application create a droplet for that size. The code will open up in AppleScript and you can save it as an application that you can keep in your Dock. From there, you just drop your images onto the droplet and, viola, they get automatically resized. That‘s the way computers should work.
The key to resizing images is to have as many options to do so. No one wants to receive or view an oversized image. Let us know if you have any other strategies for resizing images. For Windows users, check out Simon‘s article on resizing photosThe Top 3 Apps to Batch Rename, Convert & Resize Photos (Windows only)The Top 3 Apps to Batch Rename, Convert & Resize Photos (Windows only)Read More.
In an article that’s soon to follow, we will give iPhoto it’s due when it comes to resizing photos. Stay tuned.
Explore more about: Image Editor, Photography.
Your Mac’s Preview app doesn’t just contain PDF-editing features. It’s a great little image editor, too. Preview offers basic tools for cropping, resizing, rotating, annotating, and otherwise tweaking images.
Just as QuickTime will never replace iMovie in spite of all its useful media editing features, Preview will never replace Photoshop or even iPhoto. But, for some quick and basic image editing, Preview is surprisingly useful.
Get an Image Into Preview
RELATED:Use Your Mac’s Preview App to Merge, Split, Mark Up, and Sign PDFs
Getting an image into Preview is easy. By default, you can simply double-click an image file and it will open in Preview. If you’ve changed your image file associations, you can Command-click or right-click on an image file, point to Open With, and select Preview.
You can also open the Preview app from the Applications folder, Launchpad, or by pressing Command + Space to open Spotlight Search and searching for Preview. From Preview, you can open the image file directly. Or, with Preview open, you can click File > New From Clipboard to import an image file from your clipboard. You can then edit the image and get it back onto your clipboard by clicking Edit > Copy.
If you’d like to take a screenshot and edit it, you can press Command+Shift+3 to snap a screenshot of your entire screen, Command+Shift+4 to snap a screenshot of a selectable area, or Command+Shift+5 to snap a screenshot of only the current window. The screenshot will be saved as a .png file on your desktop, and you can open it in Preview to begin editing it. (Or, you can hold Ctrl as you take a screenshot — Command+Ctrl+Shift+3, for example. Your Mac will save the screenshot to your clipboard, and you can import it into Preview with the File > New From Clipboard option.)
Rotate an Image
Rotating an image is simple. Simply click the rotate button on the toolbar near the top-right of the window one or more times. You can also click the Edit menu and click one of the Rotate or Flip options.
To save your changes, click File > Save. You can also click File > Duplicate to create a duplicate copy and save the edited image as a new file, keeping the original image before the edits were made.
To undo any changes, click the Edit menu and select Undo. To revert to the original image file before you began editing it, click the File menu, point to Revert To, and select the original image version.
Crop an Image
Cropping an image is also simple. Preview uses the rectangular selection by default, so you should just be able to start clicking and dragging. Click the Tools menu and select Rectangular Selection if this isn’t working as expected.
Click and drag anywhere in the image to select a rectangular section of the image. Click Tools > Crop afterward and preview will crop the selection, cutting out everything else in the image. As with any edit, click File > Save to save your changes.
Resize an Image
Select Tools > Adjust Size to bring up the Resize dialog, which will allow you to resize the image. It supports many measurement units, including pixels. By default, it will resize the image proportionally, maintaining the original aspect ratio to ensure the resized image doesn’t look stretched or smooshed.
Image-resizing tools like this one are useful for shrinking images so they don’t take up as much visible area or on-disk space. They’re not ideal for enlarging an image as the blown-up image will be lower-quality — for this reason, enlarging an image is almost never a good idea.
Annotate an ImageResize Image On Mac Os![]()
Preview includes various image mark-up tools — the same ones that work in PDFs — which you can access by clicking the Show Markup Toolbar button near the top-right corner of the window. You can also click the Tools menu, point to Annotate, and select one of these tools in the menu.
Free Software To Resize Images
Select a tool and it will replace the default “rectangular selection” tool. You can then click somewhere in the image to add text, draw a line, highlight an area, create a shape, or insert an arrow — whichever tool you’ve selected.
Adjust Color or GammaImage Resize Software
RELATED:Use Your Mac’s QuickTime App to Edit Video and Audio Files
The built-in Preview application also has a tool for adjusting the color levels or gamma of an image. Click Tools > Adjust Color to access it. Use the options on the pane that appears to adjust various color settings. The pane includes an overall color level graph you can modify as well as sliders for adjusting exposure, contrast, highlights, shadows, saturation, temperature, tint, sepia, and sharpness. It’s useful for everything from fixing the color levels of an image to applying that old-timey sepia filter Instagram made trendy.
It doesn’t matter if you’re not sure what the options do — the image will update in the background as you adjust these sliders, so you can see a preview of your color adjustments in real time. You can figure out what the options do by playing with them.
Preview is a surprisingly powerful app. Not only can it view just a single image file at a time, it can view multiple images at a time and quickly cycle between them, producing a sort of slideshow. To do this, select multiple images in the Finder by holding the Shift key and clicking each. Next, Command-click or right-click on the images and open them in Preview. Preview will open with a sidebar showing a list of thumbnails for all the images you opened. Cycle between them using the arrow keys or by clicking the thumbnail images to quickly view all of them.
Image Credit: Quentin Meulepas on Flickr
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