What the checker reads
MerchQuill asks the browser for the decoded pixel width and height of the selected image. From those dimensions it derives megapixels, aspect ratio, orientation, and physical size at the selected target density.
Print & design
Image Resolution Checker
Check a local image's pixels, megapixels, aspect ratio, and practical print size at common target densities before sending artwork to production.
- Free
- No server upload
- JPG · PNG · WebP
Local image check
Choose a JPG, PNG, or WebP image
The browser reads the image dimensions locally. The file is not sent to MerchQuill or stored on a server.
Drop an image here
or choose a local file up to 50 MB
JPG · PNG · WebP · processed in your browser
Read the result correctly
Resolution tells you how many pixels you have to work with.
Print size depends on how densely those pixels are placed on the physical page. The same image can cover a larger area at a lower density or a smaller area at a higher density.
The file stays local
The current checker performs its image inspection in your browser. There is no upload endpoint for this tool, so the image is not transferred to MerchQuill for analysis or storage.
300, 200, and 150 DPI answer different print-size questions
300 DPI
A common high-detail target for close-view print work.
200 DPI
A strong density for many print workflows.
150 DPI
Often considered for larger output or longer viewing distance.
Pixel density is not the same as visual quality
A file can have many pixels and still contain blur, aggressive compression, artifacts, poor focus, or upscaled detail. The checker therefore reports density guidance rather than claiming that a particular image is guaranteed to print sharply.
Always verify the production provider's requirements
Print methods and products can have their own artwork sizes, bleed rules, color requirements, accepted file types, and preferred resolution ranges. Use this checker as a planning tool, then compare the result with the current production spec.
FAQ
Image resolution checker questions
Does MerchQuill upload my image?
No. The checker reads supported image files in your browser to obtain their pixel dimensions. The selected file is not sent to MerchQuill or stored on a server.
What image formats does the checker support?
The current version accepts JPG or JPEG, PNG, and WebP files up to 50 MB, provided your browser can decode the image.
How is the maximum print size calculated?
The checker divides pixel width and pixel height by the selected target density. For example, 4500 × 5400 pixels at 300 DPI corresponds to 15 × 18 inches.
Does a 300 DPI result guarantee a sharp print?
No. Pixel density is only one factor. Source sharpness, compression, scaling, print process, substrate, printer behavior, and viewing distance can all affect the final result.
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