How to take a screenshot and edit it on Mac

Updated : Nov 23, 2021
この記事は約14分で読めます。
tortoiseshell cat

Here are three ways to edit after taking a screenshot on your Mac.

Normally, you save the file and then edit it, but you can also edit it suddenly without saving the file.

Comparison of three methods and advantages / disadvantages

Merit Demerit

Here, I will introduce three methods, but let’s compare them together with their advantages and disadvantages.

MethodAdvantagesDisadvantages
① How to edit a screenshot
with “Preview.app”
after saving the image file
・Possible on all macOS versions
・More editing functions
can be used than ③
・Need to save
screenshot images once
② How to edit a screenshot
with “Preview.app”
immediately after capturing
・No need to save
screenshot images once
・More editing functions
can be used than ③
・Possible on
macOS 10.14 Mojave
or later
③ How to edit a screenshot
with “Markup” function
immediately after capturing
・No need to save
screenshot images once
・Possible on
macOS 10.14 Mojave
or later
・There are fewer
editing functions
than ①②
Mr. Otter
Mr. Otter

I’m confused and can’t tell the difference between ①, ② and ③!

Little devil fox
Little devil fox

It may be so if you read only the text.

First of all, ① and ② are the same where they are edited in the “preview.app” of the genuine Mac application.

Then, the difference between ① and ② is that ① saves the screenshot image once and double-clicks it to start “Preview.app”.

On the other hand, ② can launch “preview.app” directly immediately after taking a screenshot.

Mr. Otter
Mr. Otter

I understand a little!

① is the old way, and ② is the new way since macOS 10.14 Mojave or later!

<meta charset="utf-8">Little devil fox
Little devil fox

Oh yeah.

Then, in ③, you can call a function called “markup” immediately after taking a screenshot, just like in ②.

<meta charset="utf-8">Mr. Otter
Mr. Otter

I’ve generally understood, but what’s the difference between “Preview.app” and “Markup”?

Is it the same that both can edit images?

<meta charset="utf-8">Little devil fox
Little devil fox

Yes, it’s the same in the sense that you can edit the image.

But you can think of “Markup” as a reduced version of “Preview.app”.

The specific differences are explained in the next section.

Difference between “Preview.app” and “Markup” function

Comparison
Little devil fox
Little devil fox

“Preview.app” and “Markup” function are the same in the sense of editing an image.

So what’s the difference?

I made a comparison table.

ItemPreview.appMarkup function
Insert lettersOKOK
Insert shapesOKOK
CropOKOK
RotateOKOK
ResizeOKNG
Combine with other imagesOKNG
Instant alphaOKNG
Transfer to iPhone / iPad for editingNGOK
PrintOKNG
Convert to PDF or JPEGOKNG
Mr. Otter
Mr. Otter

Looking at this table, the only thing we can’t do with “Preview” is “Transfer to iPhone / iPad for editing”.

<meta charset="utf-8">Little devil fox
Little devil fox

That’s right.

So if you want to take screenshots on your Mac and write better with the Apple Pencil on your iPad, use “Markup” function.

<meta charset="utf-8">Little devil fox
Little devil fox

Also, for those who only insert letters, insert shapes, and crop, “Markup” function may be sufficient.

Mr. Otter
Mr. Otter

Resizing and printing aren’t supported by “Markup” function for the features we use often.

<meta charset="utf-8">Little devil fox
Little devil fox

Even if you just say the words, it may not come to you, so I think you should gradually get used to it while using it and decide when and which one to use.

<meta charset="utf-8">Little devil fox
Little devil fox

Let’s be used to them!

Mr. Otter
Mr. Otter

I’ll be used to them!

One last question, what is “Instant Alpha” that can only be used for “Preview.app”?

<meta charset="utf-8">Little devil fox
Little devil fox

It is a function to exclude the background of the image, maybe.

Even if you don’t use it forcibly, you can do the following web services these days, which is easier.

Remove Background from Image – remove.bg
Remove image backgrounds automatically in 5 seconds with just one click. Don't spend hours manually picking pixels. Upload your photo now & see the magic.
Mr. Otter
Mr. Otter

I see!

① How to edit a screenshot with “Preview.app” after saving the image file

▶ After taking a screenshot, open the saved screenshot image file with the genuine Mac app “Preview.app”.

Normally, double-clicking a screenshot image will launch “Previewq.app”.

Mac "Preview.app"

If “Previrew.app” isn’t launched, please see the link below.

▶ When “Preview.app” is launched, click the icon “Markup” at the top of the screen to change to edit mode.

Mac "Preview.app"

▶ After switching to edit mode, make the necessary edits.

When you’re done editing, click the icon “Markup” again to exit edit mode.

Mac "Preview.app"

This is the end of the explanation, “① How to edit a screenshot with “Preview.app” after saving the image file”.

② How to edit a screenshot with “Preview.app” immediately after capturing

This method is only valid on macOS 10.14 Mojave or later.

Below are the steps to edit in “Preview.app” without saving the image.

▶ On macOS 10.14 Mojave or later, a thumbnail of the screenshot image is displayed in the lower right corner of the screen for about 5 seconds immediately after taking a screenshot.

Mac Screenshot Thumbnail

▶ Right-click on this thumbnail image to display menu items.

If you select “Open in Preview” in this, the screenshot image will open with the genuine Mac application “Preview”.

Mac Screenshot Thumbnail
Mac "Preview.app"

If “Previrew.app” isn’t launched, please see the link below.

▶ When “Preview.app” is launched, click the icon “Markup” at the top of the screen to change to edit mode.

Mac "Preview.app"

▶ After switching to edit mode, make the necessary edits.

When you’re done editing, click the icon “Markup” again to exit edit mode.

If you want to save the edited result, give it a suitable name and save it.

Mac "Preview.app"

This is the end of the explanation, “”.

③ How to edit a screenshot with “Markup” function immediately after capturing

This method is only valid on macOS 10.14 Mojave or later.

Below are the steps to edit with the “Markup” function without saving the image.

▶ On macOS 10.14 Mojave or later, a thumbnail of the screenshot image is displayed in the lower right corner of the screen for about 5 seconds immediately after taking a screenshot.

Mac Screenshot Thumbnail

▶ Right-click on this thumbnail image to display menu items.

If you select “Markup” in this, the screenshot image will open in the “Markup” screen.

Mac Screenshot Thumbnail

▶ When the Markup screen opens, make the necessary edits.

When you have finished editing, click the “Done” button to save the edited file and exit.

This is the end of the explanation, “”.

Unable to lauch “Preview.app”?

Screenshot images are saved in PNG format, but apps that open PNG files are assigned to “Preview” by default on the Mac.

However, it may be assigned to another app when you manually change the settings or install some app.

In this case, in order to open with the “preview” introduced on this page, change the settings by the following method.

▶ Find the file with the extension PNG, right-click to display the menu, and select “Get Info”.

The file can be anything, but I think the screenshot image stored on the desktop is just right.

Mac File Right-click Menu

▶ When the file details screen is displayed as shown, change the “Open with this application” app pointed to by the arrow to “Preview”, and then click the “Change everything …” button. increase.

Mac File Information

▶ When the confirmation screen for changing the settings is displayed as shown in the figure, click the “Continue” button to confirm.

Are you sure you want to change all similar documents to open with the application “~”?

This change will apply to all documents with extension “.png”.

Mac File Open with

▶ After changing the settings, you can close the open detailed information screen.

This is the end of the explanation, “Unable to launch Preview.app?”.

Conclusion

I have introduced 3 ways to edit Mac screenshots.

Screenshots are often used on Mac, so try each one and find the one that suits you best.

Reference information

Take a screenshot on your Mac
You can capture the entire screen, a window, or just a portion of the screen.
Take screenshots or screen recordings on Mac
On your Mac, take pictures or recordings of the screen using Screenshot or keyboard shortcuts.

This is the end of this article.

コメント

タイトルとURLをコピーしました