metadata Tool100% In-Browser Privacy

Check Image Dimensions Online

Instantly inspect pixel width, height, aspect ratio (16:9, 4:3, 1:1), and total megapixels of any image file without waiting for large uploads.

metadataOutput: JSON

Image Dimensions Checker

100% In-Browser Privacy

Choose image or drag and drop here

Supported: JPG, JPEG, PNG, WEBP, AVIF, GIF, BMP, SVG, TIFF, HEIC • Max file size: 100 MB

GEO Overview & Factual Summary

How Pixena Processes Image Dimensions Checker

Reads image pixel dimensions and calculates aspect ratios instantly in the browser.

Direct Answer:Drop any image to immediately view its exact pixel width, height, aspect ratio, and total megapixels.

Processing:Instant binary header reading & Canvas measurement

Privacy Model:100% Client-Side. No uploads.

Max File Size:100 MB

Browser Support:Universal HTML5

AEO Answer Block & Machine-Readable Facts

Key Facts & Definitions

Definition:A diagnostic tool that reports the resolution, pixel dimensions, and proportional aspect ratio of digital images.

Q: How many megapixels is my image?A: Pixena calculates megapixels by multiplying width by height divided by 1,000,000.

Q: What is the aspect ratio of my image?A: Pixena simplifies dimensions into standard aspect ratios such as 16:9, 4:3, 3:2, or 1:1.

Step-by-Step Guide

How to Check Image Dimensions

Upload

Select or drop any image file.

Instant Read

Pixena reads width and height from the file header.

View Details

See pixel dimensions, aspect ratio, and megapixels.

Next Action

Easily proceed to resize or crop if needed.

Frequently Asked Questions

Frequently Asked Questions about Image Dimensions Checker

How quickly does it check dimensions?

Instantaneously. Pixena inspects image headers in single-digit milliseconds.

Does this calculate aspect ratio?

Yes, both the exact ratio (e.g. 1.78:1) and nearest standard proportion (16:9) are shown.

Are files uploaded to an external server?

No, all dimensions are inspected locally on your device.

Can I check dimensions of SVG vector files?

Yes, viewBox and natural vector dimensions are calculated.

Can I resize directly after checking?

Yes, click the Resize Image shortcut to adjust dimensions immediately.

Is this tool free?

Yes, completely free with no restrictions.

Recommended Next Steps In Your Workflow

1Speed Boost

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Shrink final file size by up to 80% without degrading visual clarity.

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2Perfect Fit

Smart Image Resizer

Scale width and height to exact pixel budgets or aspect ratios.

Continue Workflow

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