Choose your JPG, PNG or WebP in the Image Checker to see its file size, pixel dimensions and recorded density. You can also inspect transparency and calculate a print size at a PPI you choose. The original file stays on your device and is not changed.
Image Checker
Check image size, dimensions, format, transparency and recorded DPI in your browser. Calculate print size and inspect common metadata without uploading your image.
Static JPG, PNG or WebP · up to 20 MB, 8 megapixels and 8192 px per edge. Read-only checks; no image uploads.
Choose an image to begin.
Metadata can be edited, copied or stripped. These clues cannot prove whether an image is real or AI-generated.
Evidence found
Content Credentials markers
Finding a marker is not cryptographic validation. This checker does not verify signatures, signers, provenance claims or external manifests.
Image information
Recorded image density
DPI is commonly used in searches; image density is measured in pixels per inch (PPI). A density tag does not tell you whether an image is sharp.
Calculate print size
Inspection notes
This checks common EXIF fields, PNG text, supported XMP fields and selected credential markers. Unsupported or removed metadata cannot be recovered. It is not a complete file-integrity, copyright or authenticity check.
View inspected metadata
Metadata may include private names, dates or prompts. The report includes these fields.
How to check image size
Image size can mean two different things: file size in bytes, KB or MB, and dimensions in pixels. This checker shows both. It uses decimal units: 1 KB is 1,000 bytes. The exact byte count is included.
How to check image dimensions
Read width × height in pixels. A 2400 × 1600 image contains 3.84 million pixels, or 3.84 megapixels. Stored dimensions may differ from displayed dimensions when an orientation tag rotates the image.
How to check the DPI of an image
Look under Recorded image density. Recognised EXIF, JPEG JFIF and PNG pHYs fields can store density values. If a value has no physical units, or no density is recorded, the checker says so instead of inventing a default. Different tags can disagree.
DPI versus PPI
People commonly search for image DPI, but the density of an image is pixels per inch, or PPI. Printer DPI describes dots produced by a printer. A 300 PPI label alone does not establish sharpness or create extra detail.
Calculate print size
Divide pixels by the intended PPI. For example, 2400 × 1600 pixels at 300 PPI corresponds to 8 × 5.33 inches, or about 20.32 × 13.55 cm. At 150 PPI it corresponds to 16 × 10.67 inches. Choose the density appropriate for the intended output and viewing distance.
Check transparency and metadata
The checker counts fully and partly transparent pixels in the decoded image. It also displays common supported metadata fields and flags the presence of an EXIF GPS directory without showing its coordinates. Missing camera information is not evidence that an image is AI-generated.
What should I change?
If the file exceeds an upload limit, use compression. If its pixel dimensions are too large, resize it. If you want to inspect differences between two versions, use Image Compare. Checking a file does not change these properties.
Keep the limits in mind
This checker supports static JPG, PNG and WebP files up to 20 MB, 8 megapixels and 8192 pixels per edge. It reads common metadata, not every possible field. It does not establish copyright ownership, verify a scene or perform a complete corruption check.
Technical reference: PNG physical pixel dimensions specification.
Behind the result
Read-only inspection combines file headers, supported metadata fields and decoded pixel information.
Read the file header
File signatures identify JPG, PNG or WebP independently of the filename extension. Stored dimensions come from the image header.
Read density tags
JPEG JFIF, EXIF X/Y resolution and PNG pHYs values are converted to pixels per inch only when physical units are recognised. Conflicting tags are shown separately.
Inspect decoded pixels
The browser decodes a static image locally. Alpha values identify fully and partially transparent pixels; displayed dimensions reflect the decoder’s orientation handling.
Calculate print size
Print width in inches equals displayed pixel width divided by the chosen PPI. Centimetres are inches multiplied by 2.54. This calculation changes no image data.
Explore the details: PNG physical pixel dimensionsPNG metadata specification