How to Check an Image's Size and Resolution (Windows, Mac, Phone, Browser)
imgmend Team
AI Image Tools
Find out an image's pixel dimensions and file size on Windows, Mac, iPhone, Android and in your browser, and what the numbers mean for print and screen.
To find an image's size, check its pixel dimensions (width × height) and its file size: on Windows right-click the file and open Properties → Details, and on Mac open the file in Preview and choose Tools → Show Inspector. On a phone, the photo's info panel shows both.
| Where | How |
|---|---|
| Windows | Right-click → Properties → Details |
| Mac | Preview → Tools → Show Inspector |
| iPhone | Open the photo, swipe up or tap the info icon |
| Android (Google Photos) | Open the photo, swipe up for details |
| Browser | Open the image in its own tab; the tab title shows its dimensions |
Windows
Right-click the image file, choose Properties and open the Details tab. Under Image you see Dimensions, such as 4032 × 3024, and the file size appears on the General tab.
Mac
Open the image in Preview and choose Tools → Show Inspector. The General panel lists pixel dimensions and file size. Choosing Tools → Adjust Size also shows the current width and height.
iPhone and Android
On iPhone, open the photo in Photos and swipe up or tap the info icon to see the file details. On Android, open the photo in Google Photos and swipe up. The details panel shows the resolution and file size on most versions.
In a Browser
For an image on a web page, right-click it and open it in a new tab. Browsers such as Chrome and Firefox show the dimensions in the tab title.
What the Numbers Mean
- Pixel dimensions are the real resolution. See how to change the resolution of a picture.
- File size (KB or MB) depends on pixels and compression. To reduce it, use the imgmend compressor, which shows the old and new size.
- For print, divide the pixels by the DPI to get inches: 2400 px at 300 DPI prints 8 inches wide. See pixel dimensions for paper sizes.
If the Image Is Too Small
If the dimensions are lower than you need, an AI upscaler can enlarge the image. Try the imgmend upscaler (2x free), keeping in mind it cannot recover detail the photo never captured.
Frequently Asked Questions
How do I check the size of an image?
Open its Properties on Windows or the Inspector in Preview on Mac to see pixel dimensions and file size.
How do I check the resolution of a photo on my phone?
Open the photo's info panel; it lists the resolution and file size.
What is the difference between image size and file size?
Image size is the pixel dimensions. File size is how much storage the file uses.
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