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Have you ever spent hours of frustration trying to resize a photo in your Mac's iPhoto down to Avatar size? Yesterday I was trying to fill in my Profile in a Forum I'd just joined. I tried to upload a photo of myself for my Avatar. They had a pixel limit of 100×100 pixels, and no matter how I cropped and saved and uploaded, this site's software stubbornly refused to upload my edited photos. I tried doing it in iPhoto itself, but the size adjustment was already on the smallest setting.
Here's What Didn't Work
First I tried to use my Gravatar – you do have a Gravatar….don't you! I've never had any problems using Gravatar before, and I've been posting comments on lots of other forums and websites. Why? Because posting comments on other people's websites is a good method of generating traffic back to your own site. But this particular Forum had some weird, antiquated software for uploading that I've not seen anywhere else before – and it didn't do a good job!
Tip for young players: when something you are trying to do online, refuses to do what you want it to do, blame the software. That's what I do. Why? It preserves your self-esteem, and allows you to sail serenely on, with supreme, super-hero-self-confidence in your tireless pursuit of … Living the Dream!…. for example, making a bundle online, and retiring to a tropical island (substitute personal dream of choice here).
Open the picture in Preview, then go to ToolsAdjust Size. Resize the picture to what you need. Then go to Save As and choose the picture type (JPEG, TIFF, etc) and save the new image. You wanted a quick way and I don't think they come any quicker!! As with many things on a Mac you don't need extra software, most of what you need is already on. Navigate to the image you wish to resize. This method will help you change the size of the entire image. If you want to crop out a part of the image to resize, see Cropping an Image in Preview. To search for an image name or tag, open Finder, then click the magnifying glass icon in the menu bar. If you want to resize them in place and replace the originals, leave this copy block out. You should now have two actions in the service. To make it work, click 'Options' on the Scale Images service, and select 'Show this action when the workflow runs.' This will make the service open a dialog asking for the image size.
OK, if you haven't been paying attention and following my advice and instructions in How to Add a Photo to Your Online Comments, consider yourself noticed….and go to Gravatar.com at your earliest opportunity. Make some Avatars/Gravatars, and start adding Authority to your online comments – it's a free Gravatar service and in most forums and websites, and it works a treat. Return key mac.
Note to self:Focus!! Mac snow leopard free upgrade. Quite right.
So yesterday I gave up the photo shrinking struggle, but today I started researching how to resize photos in Mac iPhoto – because no one wants to be defeated by a machine, and… I saw an opportunity to help out my readers in case they ever run up against this same problem. Here is what I learned – and yes, this works. I show you 2 ways to shrink photos: one using iPhoto, and one using Mac Preview App – that is shipped free with all Mac computers.
Personally, I use the Preview app for shrinking (or increasing) my image sizes, rather than iPhoto for changing image size – it's much easier and ALWAYS works. But try both methods and see which suits best for you.
But I do use iPhoto for Cropping, and Adjusting (exposure, sharpness, shadow etc) if I need to do that first. Then I Export the Adjusted image to my computer, where I upload image to Preview and do size adjustments there.
If you are uploading your images into a website, don't forget to Optimize your Images so they don't slow down your website's loading speed.
I always use free TinyPng.com to do that. If you use Tinypng to optimize images – don't forget to first save your images in png format (not jpg) or Tinypng doesn't work – you can easily do this in Preview's Save Options as well.
Step By Step Instructions How to Resize Photo Sizes in iPhoto
- Select your photo in iPhoto by clicking on it
- Do any adjustments of Exposure, Sharpness, Cropping etc
- Select ‘Export' from the drop down menu: iPhoto > File > Export
- Select Maximum Quality
- Select ‘Custom' from the iPhoto ‘Size' option (not the large, medium or small)
- Set the dimensions in pixels you need in the Height, Width, or Dimensions text box
- Click Export, and on the next screen select somewhere on your computer outside iPhoto where you want to export it to. For example, to Documents or Desktop.
- it's now saved as a .jpg or .png file format where you chose to save it, and can be found in Finder.
- When you use ‘Custom' size adjustments in iPhoto, you can sometimes cause distortion of the image.
- Keep calm….you can just use Preview for your size adjustments and use iPhoto only for image Editing/Adjusting.
How to Shrink Photos using Mac's Preview App
- Open a saved .jpg or .png format image using Finder>Apps>Preview – just clicking on it should automatically open it in Preview.
- If you want to keep a copy of the original image, and make a new image with different dimensions, go to Preview>File>Duplicate.
- If you haven't opened this photo/image for a while, you might now be shown an option box which tells you that this file is ‘locked' with an option to Unlock it.
- Click Unlock.
- Close you original image (out of harm's way).
- Now make your size adjustments on the copy of the image you just made.
- Go to Preview > ‘Tools' in the top line menu
- Select ‘Adjust Size' from drop down menu
- Choose the pixel size/dimensions you want – some avatar uploads limit size to 100×100 pixels max
- If you uncheck the automatic ‘Scale Proportionally' check box in Preview, you can stretch or squash images, but this will distort the image. For small adjustments, this might not matter – or, you can use this stretching/squashing feature to make some interesting ‘new' images – useful for background images.
- Go to File >Save
- If you want to, you can increase the Quality slider to Max. I find that for ordinary screenshots and image uploads into posts, you do not need to set quality to Max. Using Max resolution increases the KB size/weight of your image, which can slow down your page's loading speed. However, if you have a Photography blog, you might want to use Max Resolution anyway, and not worry about the weight of the image.
- Save – all done. Congratulations!
P.S. If you have a rectangular image that you need to make square e.g. for thumbnail uploads, it's best to crop the photo (to make it square) in iPhoto first. Then Export the square image to your computer. Upload it into Preview, and then you can shrink (or increase) the photo (which is already square) and keep the Scale Proportionally box checked, and you avoid any distortion.
Alright! Time for a treat!
Hint: rewarding yourself for your achievements, saves you waiting around for others to do it for you. That always works for me.
- Have you been researching how to Start a Blog yet?
- Have you chosen a Domain Name yet?
- Have you chosen a Domain Name Registrar yet?
- Have you bought a Domain Name yet?
- Have you chosen a Hosting company yet?
- Are you Living the Dream yet?
Carpe Deum, friends! Carpe Deum……
Cue Motto…… Plan Well. Start Small Think BIG!
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By Adela D. Louie, Last updated: August 27, 2019
Do you have a lot of images in your Mac? Would you want to know how to resize an image on Mac for you to be able to save a lot of your storage space? Then this article is for you.
Pictures are considered to be one of the most stored items on a Mac device. This is because they're actually a lot of people who are having fun taking some pictures using their iOS devices. And because of this, what they tend to do is that they actually save these pictures on their Mac and serves as a backup.
And if you would want to preview a certain image on your Mac, then that will be easy. All you have to do is to double-click on the image file and then it will open automatically for preview.
And if in case that you have you have already changed your image file associations, all you have to do is to go to your Launchpad or you can also do this just by simply pressing the Command + Space and this will launch your Spotlight Search. Then from there, you can go ahead and search for Preview. And we are going to show you in a while on how you can do this.
So, if you would need to reduce the size of a certain image on your Mac because they are too large for you to send using email, or even to use online or for some other reasons. For sure, the very first thing that would get in your mind is getting an application such as Photoshop or other applications.
However, there is a way for you to be able to resize an image just by using your Mac without any applications that you would need to download. We are also going to show you here on how you can resize your images in many ways.
Part 1: How to Resize Image On Mac Using Preview
Here are the steps that you would need to follow for you to be able to change the size of an image using the Preview tool of your Mac.
Step 1: Go ahead and find the image that you want to resize. You can do this by using the Finder app or you can use your Desktop as well.
Step 2: After that, go ahead and double-click on the image. This way, you will be able to launch the image in Preview. If this does not work, you can go ahead and close it and then right-click on the image. After that, go ahead and choose 'Open With' and then select Preview.
Step 3: And then, go ahead and click on Tools.
Step 4: From there, go ahead and choose 'Adjust Size'. Or you can do it as well by clicking on the square that has the arrow icon on it in the menu bar.
Step 5: After that, you have to make sure that the Scale of the photo is proportionally chosen. This means that the things that you can only do are to change its dimensions such as its length, or its width.
Step 6: After that, go ahead and select if you want your image to be resized based on the pixels, percent, inches, cm, mm, or by its point.
Step 7: Then go ahead and adjust the width number or you can also choose to adjust the Height number. Either of which you choose, the other one will be able to adjust automatically to make your image proportional.
So that is it. You were able to resize your image using Preview on your Mac. This method will definitely change the dimensions of the image that you have chosen to resize. But aside from this method, there are several ways with how you can resize your image.
Part 2: How to Resize An Image and Make it Smaller
Now, if what you are trying to do is to change the size of your image so that you can send it to other people using your email. Then there is a possible way for you to do this.
If you are going to launch the Adjust Size menu, and if you take a closer look, you will be able to see one that you try to adjust the dimension of your image, then you will be able to see a preview of the size. This can be in MB or in KB.
Now, in case that what you are trying to do is to resize an image to 500KB, then all you have to do is to keep on adjusting the dimensions of your image until such time that you have reached your target size.
And, aside from that, there is another way for you to do resize your image. And you can do this by the quality setting under your Export menu. Here is what you need to do.
Step 1: Go ahead and click on the image that you want to resize and then click on Export.
Step 2: After that, you will be able to see several file formats that you can choose from. You will be able to see formats such as HEIC which is the new file format, JPEG, JPEG-2000, OpenEXR, PDR, PNG, or TIFF. And if you are going to check out below, you will be able to see a list of measurements of the file available. And if you are going to click on those different file options, you will be able to see that your image will change its size.
NOTE: JPEG is smaller than PNG file and TIFF is bigger than the PNG file.
Step 3: Even though you have already chosen JPEG, you can still actually go one step forward for you to be able to resize your image. All you have to do is to slide the quality bar from Best to Least until you reach the size that you would want.
Step 4: Once that you are done and satisfied with the file size, all you have to do is to click on the 'Save' button.
Part 3: How to Resize Image on Mac but Still Maintain 300dpi
Since that the quality of the image that you are trying to resize still matters to you. Then what you would need to have the possible best result which is the 300dpi which is commonly used for images that to be printed out. So, if you want to know how you can do this, just go ahead and simply follow the guide below.
Step 1: Go ahead and deselect resample image.
Step 2: After that, go to the part where it says resolution pixels/inch.
Step 3: And then, go ahead and change the number that you see on your screen to 300. You can also change it to the number that you would want or what is required.
Step 4: Then you will be able to notice that the height and the width measurements will also adjust.
Step 5: From there, just go ahead and click on the 'OK' button.
Step 6: This method does not actually adjust the previous size of your selected image, but it only means that once that the image that you are working on is chosen to be printed, then it will appear smaller but still crystal clear.
Part 4: How to Resize an Image on Mac by Cropping in Preview
One old-school way for you to be able to resize the image that you want is to crop it. This method is actually a very easy thing to do. Now, since not everybody knows about this, then here are some guidelines on how you can do it.
Step 1: Go ahead and simply click on the image that you want to resize in Preview.
Step 2: Then after that, go ahead and drag the blue box that has the surrounding of the image that you would want to crop.
Step 3: And if you would want to make a particular size, then all you have to do is to drag the dimension box until you reach your target. And also, you will be able to see at the bottom right corner of your screen the pixel that has been chosen.
Step 4: And so, once that you have to right size box, go ahead and un-click the box then you will be able to move the box's position.
Step 5: Once that you are satisfied with the result, all you have to do is to go ahead and press on Command + K and then you will be able to crop the image.
Part 5: How to Resize an Image Without Losing the Quality
AS we all know, there is no way that you can actually add some pixels on a certain image for you to have better quality. But what you can do is that you crop the crop the image as what we have mentioned above.
On the other hand, you can also use the HEIC format, which you can actually use for you to save more of your space on your Mac. This way, you can save a certain image that is actually smaller than the JPEG but at the same time, you will still have the same quality.
The HEIC however, is only available if you are using a macOS High Sierra or Mojave. You can also have this format if you are using an iPhone or an iPad that is running on iOS 11 or iOS 12.
Part 6: How to Do A Batch Resize
Another way for you to make your job easier is to do a batch size. You can do this if you actually have a number of images that you would want to adjust. For you to know how you can do this, just go ahead and follow the guide below.
Step 1: Go ahead and choose all the images that you would want to resize by using your Finder application. You can also do this on your Desktop. Make sure that you are pressing the Command key while you are choosing your photos.
Step 2: After that, go ahead and right-click on all on the image that you have chosen and launched it on Preview. You can choose by pressing the Command + A.
Step 3: After that, go to Tools, and then click on Adjust Size.
Step 4: And if you would want to change the dimensions of your image, go ahead and click on Scale Proportionally.
Step 5: Then, you will be able to see on your screen 'Multiple Values' and all the measurements in columns.
Step 6: After that, go ahead and click on 'OK' to adjust the size of your image that you have chosen earlier.
Step 7: And then, go ahead and press Command + S for you to save all the images that you are working on.
Part 7: Changing the Format of Your Image
And as a bonus tip for you to be able to save more space on your Mac, you can go ahead and change the file format of pictures that you have resized to make its size smaller. Here is how you can do it.
Step 1: Go ahead and click on the File option in the menu bar.
Step 2: After that, go ahead and click on Export.
Step 3: From the list of format seen on the drop down, you can go ahead and choose the format that you want. You can choose from HEIC, JPEG, JPEG-2000, OpenEXR, PDR, PNG or TIFF file format.
Step 4: With the options shown, you can also adjust the quality of your image.
Step 5: And once that you are satisfied with the outcome, go ahead and simply click on Save.
Part 3: How to Resize Image on Mac but Still Maintain 300dpi
Since that the quality of the image that you are trying to resize still matters to you. Then what you would need to have the possible best result which is the 300dpi which is commonly used for images that to be printed out. So, if you want to know how you can do this, just go ahead and simply follow the guide below.
Step 1: Go ahead and deselect resample image.
Step 2: After that, go to the part where it says resolution pixels/inch.
Step 3: And then, go ahead and change the number that you see on your screen to 300. You can also change it to the number that you would want or what is required.
Step 4: Then you will be able to notice that the height and the width measurements will also adjust.
Step 5: From there, just go ahead and click on the 'OK' button.
Step 6: This method does not actually adjust the previous size of your selected image, but it only means that once that the image that you are working on is chosen to be printed, then it will appear smaller but still crystal clear.
Part 4: How to Resize an Image on Mac by Cropping in Preview
One old-school way for you to be able to resize the image that you want is to crop it. This method is actually a very easy thing to do. Now, since not everybody knows about this, then here are some guidelines on how you can do it.
Step 1: Go ahead and simply click on the image that you want to resize in Preview.
Step 2: Then after that, go ahead and drag the blue box that has the surrounding of the image that you would want to crop.
Step 3: And if you would want to make a particular size, then all you have to do is to drag the dimension box until you reach your target. And also, you will be able to see at the bottom right corner of your screen the pixel that has been chosen.
Step 4: And so, once that you have to right size box, go ahead and un-click the box then you will be able to move the box's position.
Step 5: Once that you are satisfied with the result, all you have to do is to go ahead and press on Command + K and then you will be able to crop the image.
Part 5: How to Resize an Image Without Losing the Quality
AS we all know, there is no way that you can actually add some pixels on a certain image for you to have better quality. But what you can do is that you crop the crop the image as what we have mentioned above.
On the other hand, you can also use the HEIC format, which you can actually use for you to save more of your space on your Mac. This way, you can save a certain image that is actually smaller than the JPEG but at the same time, you will still have the same quality.
The HEIC however, is only available if you are using a macOS High Sierra or Mojave. You can also have this format if you are using an iPhone or an iPad that is running on iOS 11 or iOS 12.
Part 6: How to Do A Batch Resize
Another way for you to make your job easier is to do a batch size. You can do this if you actually have a number of images that you would want to adjust. For you to know how you can do this, just go ahead and follow the guide below.
Step 1: Go ahead and choose all the images that you would want to resize by using your Finder application. You can also do this on your Desktop. Make sure that you are pressing the Command key while you are choosing your photos.
Step 2: After that, go ahead and right-click on all on the image that you have chosen and launched it on Preview. You can choose by pressing the Command + A.
Step 3: After that, go to Tools, and then click on Adjust Size.
Step 4: And if you would want to change the dimensions of your image, go ahead and click on Scale Proportionally.
Step 5: Then, you will be able to see on your screen 'Multiple Values' and all the measurements in columns.
Step 6: After that, go ahead and click on 'OK' to adjust the size of your image that you have chosen earlier.
Step 7: And then, go ahead and press Command + S for you to save all the images that you are working on.
Part 7: Changing the Format of Your Image
And as a bonus tip for you to be able to save more space on your Mac, you can go ahead and change the file format of pictures that you have resized to make its size smaller. Here is how you can do it.
Step 1: Go ahead and click on the File option in the menu bar.
Step 2: After that, go ahead and click on Export.
Step 3: From the list of format seen on the drop down, you can go ahead and choose the format that you want. You can choose from HEIC, JPEG, JPEG-2000, OpenEXR, PDR, PNG or TIFF file format.
Step 4: With the options shown, you can also adjust the quality of your image.
Step 5: And once that you are satisfied with the outcome, go ahead and simply click on Save.
How Do I Reduce The File Size Of An Image? » Images » Mac ..
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Part 8: Conclusion
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So, there you have it. Resizing an image on your Mac is possible without having to download any applications to use. All you have to do is to follow all the steps that we have mentioned above depending on how would you want to appear your image.
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