What this workspace does
A simplified ratio and useful closest-format comparisons.
Image Inspector · browser local
Find an image’s aspect ratio and closest canvas.
Open an image to reduce its width and height to a ratio, then compare that ratio with common square, portrait, landscape, video, and print canvases.
Use it accurately
A close ratio can still need a crop or padding; use the image fixer for the final canvas.
Private browser processing
Selected files are processed in the current browser session. Aftermath has no account, cloud file storage, or server-side file-processing job.
What this tool checks
Find an image's aspect ratio and compare it with nearby canvas ratios before you crop, fit, pad, or resize a local file. The browser reports the ratio from the decoded pixel dimensions and leaves the source unchanged. A close ratio comparison is a planning aid, not proof that an external platform will accept the finished asset.
What to choose and what you get
What to choose
- one supported local image
Result
- a local aspect-ratio result and closest canvas comparisons
Supported formats
- Accepted formats: JPG, PNG, WebP.
- Output formats: HTML report.
Browser support and permissions
- Modern browser with JavaScript, a supported image decoder, and enough memory for the selected image.
- No camera, microphone, or screen permission is needed.
Worked example
A 4032 × 3024 photograph needs comparison with 4:3, 3:2 and 16:9 canvases before cropping.
Starting facts
- The decoded source ratio is determined from its displayed pixel dimensions.
- The source should not be rewritten during comparison.
Observed operation: Calculate and simplify the exact ratio, then compare its crop difference with nearby common canvas ratios.
Review the result: Choose the closest intentional destination ratio and inspect how much edge content a later crop would remove.
Boundary: A close mathematical ratio does not choose the composition, focal point or platform requirement for the user.
Check your result
- A close ratio can still need a crop or padding; use the image fixer for the final canvas.
Things to know
- Review the result on the intended device before relying on it.
Privacy boundary
The selected image stays in the current browser session and is not sent to an Aftermath processing service. How local processing is verified.
What this tool verifies
Checks the displayed limits and reports or creates a local aspect-ratio result and closest canvas comparisons from one supported local image.
Check before sharing
A local measurement or export does not guarantee acceptance by an external destination.