Drop an image here
or click to choose · PNG, JPG, WebP, GIF
Choose imageAbout the Image Info
Need to know how big a picture actually is? Drop it here and get the facts at a glance: exact pixel dimensions, the simplified aspect ratio (like 16:9 or 4:3), megapixel count, file size and MIME type, all laid out alongside a preview of the image itself. No digging through file-manager property dialogs, no opening a heavyweight editor just to read a single number.
It's the quick sanity check before uploading a header image with strict size requirements, submitting photos to a print service, or debugging why a logo looks stretched — an odd aspect ratio is often the giveaway. The file is inspected by your browser alone: it never leaves your device, nothing is stored, and you can check as many images as you like for free.
Features
- Exact pixel width and height at a glance
- Aspect ratio simplified to its cleanest form
- Megapixel count calculated automatically from the dimensions
- File size and MIME type reported precisely
- Instant results with a full image preview
- Read locally in your browser — never uploaded
How to check image dimensions and size online
- Drag any image onto the tool or click to browse for it.
- Read the dimensions, aspect ratio and megapixels instantly.
- Note the file size and format for upload requirements.
- Click Change image to inspect another file.
Frequently asked questions
What details does the tool show about my image?
Six essentials: the filename, exact pixel dimensions, the aspect ratio reduced to its simplest form, resolution in megapixels, file size in human-readable units, and the MIME type such as image/png or image/webp. Together they answer nearly every 'will this image fit?' question.
How is the aspect ratio calculated?
The width and height are divided by their greatest common divisor, giving the tidiest whole-number ratio — 1920×1080 shows as 16:9, 3000×2000 as 3:2. Unusual dimensions can yield awkward ratios like 397:250, which itself is a hint the image was cropped irregularly.
Does this tool show EXIF data like camera settings?
No — this tool deliberately focuses on the basics of dimensions, size and format that upload forms most often ask about. For camera model, lens, exposure settings, capture date and GPS location, use Tooldoodle's dedicated EXIF viewer instead, which reads the full metadata block from JPEG and RAW-derived files.
What do megapixels actually tell me?
Megapixels are simply width times height divided by a million — total pixel count. They indicate how large the image can be printed or displayed before softening: roughly 2 MP suits full-HD screens, 8 MP a good A4 print, and 24 MP a large poster.
Is the image uploaded to read its properties?
No. Your browser decodes the file locally to measure it, and every number you see is computed right on your device. Nothing is transmitted over the network or retained after you leave the page, so checking sensitive documents, private photos or unreleased design work carries no exposure risk whatsoever.