Image Dimension Checker
Check the width, height, aspect ratio and megapixels of any image — one file or a whole batch.
Drag & drop images here, or click to browse (multiple files allowed)
No uploads. Your files stay on your device.
| Image | Dimensions | Aspect ratio | Megapixels | Orientation | File size | Format |
|---|
How it works
Drop in one image or a whole folder's worth and every file's pixel width and height appears instantly, together with its simplified aspect ratio (16:9, 4:3, 1:1 …), megapixel count, orientation, file size and format. Each image is decoded locally with the browser's own image decoder — nothing is uploaded, so you can safely check screenshots, client photos or unreleased artwork.
Use Copy dimensions to grab a plain 1920x1080 list for CSS,
HTML width/height attributes or a bug report, or export the full
table as CSV for a spreadsheet. Files that cannot be decoded are flagged in the table instead
of failing the whole batch.
Frequently asked questions
How do I check image dimensions online?
Drag your image onto the drop zone above, or click it to browse. The width and height in pixels appear instantly, along with the simplified aspect ratio, megapixel count, orientation, file size and format. You can drop several images at once and read them all from one table.
Are my images uploaded to a server?
No. The checker uses your browser's own image decoder, so every file is read locally on your device and never leaves it. That makes it safe for screenshots, client photos and unreleased artwork — and it also means results are instant, even for very large files.
What is the difference between image dimensions, resolution and megapixels?
Dimensions are the pixel width and height, such as 1920 × 1080. Megapixels are those two numbers multiplied and divided by a million (1920 × 1080 = 2.1 MP), which is how cameras describe sensor size. Resolution in the print sense (DPI/PPI) only matters once you fix a physical print size; on screen only the pixel dimensions count.