Image Dimensions Checker
Check image width, height, aspect ratio, megapixels, and DPI print sizes.
Drop an image to inspect dimensions & resolution
Instant readout of width, height, aspect ratio, megapixels, and print sizes.
How to use Image Dimensions Checker
- 1Upload or drag and drop any image into the inspector.
- 2Instantly view exact pixel width, height, aspect ratio, and megapixels.
- 3Review print size calculations at 72, 150, and 300 DPI, and check compatibility against social media standards.
Key Features & Highlights
- •Instant pixel width and height measurement
- •Precise aspect ratio identification (16:9, 4:3, 1:1, 9:16, etc.)
- •Megapixel resolution and orientation calculation
- •Physical print dimensions chart for 72, 150, and 300 DPI
- •Preset compatibility matrix for Full HD, 4K, Instagram, YouTube, and X
- •100% private in-browser analysis
Check Image Dimensions & Resolution Online
Quickly verify whether your image meets publication guidelines, social media upload specifications, or physical print requirements. Our tool checks the pixel dimensions, aspect ratio, orientation, and total resolution of any image without uploading it to a server.
Print Size Calculator (DPI Standards)
Wondering how large your photo can be printed without losing clarity? The integrated DPI print calculator computes physical print measurements in inches and centimeters for screen viewing (72 DPI), standard office printing (150 DPI), and commercial photo quality (300 DPI).
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Frequently Asked Questions
What resolution is needed for sharp printing?
For crisp photo prints, magazines, and marketing brochures, 300 DPI (dots per inch) is the industry standard. For large banners viewed from a distance, 150 DPI or lower is often acceptable.
Is my image uploaded anywhere during inspection?
No. Analysis runs 100% locally in your browser using HTML5 Image APIs. None of your files, personal photographs, or client assets are ever sent to external servers.
How do I calculate megapixels from image pixel dimensions?
Multiply the image pixel width by its height, then divide by 1,000,000. For example, a 4032×3024 smartphone image has 12,192,768 total pixels, which equals approximately 12.2 megapixels (MP).
Why does verifying image dimensions prevent Cumulative Layout Shift (CLS)?
Specifying the exact width and height attributes in HTML `<img>` elements allows modern browsers to calculate the aspect ratio and allocate space before the image is fetched, eliminating disruptive layout jumps and improving Google PageSpeed scores.
What are standard dimensions for social media platforms?
Standard dimensions include 1200×630 for Open Graph link cards (Facebook, LinkedIn), 1080×1920 for Stories/Reels/TikTok (9:16), 1080×1350 for Instagram vertical portrait posts (4:5), and 1280×720 for YouTube thumbnails (16:9).
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