What this workspace does
A measured image specification sheet.
Image Inspector · browser local
Check image size & dimensions
Use a local image size checker to inspect pixel width and height, megapixels, aspect ratio, MIME type, byte size, alpha availability, and decoded orientation in one report.
Use it accurately
Pixel dimensions and encoded byte size answer different questions; the report keeps both visible so you can compare the file with the destination rule.
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
Use this image size checker to inspect one local file's pixel width, height, aspect ratio, MIME type, byte size, alpha channel, and decoded orientation before upload. The report reads browser-observable properties without resizing or rewriting the source. Compare the measurements with the current destination rule; a technical report does not guarantee submission acceptance.
What to choose and what you get
What to choose
- one supported local image
Result
- a local image specification report with pixels, ratio, MIME type, bytes, and alpha facts
Supported use
- A local report of pixel width, height, megapixels, ratio, MIME type, bytes, alpha availability, and decoded orientation.
- A quick image size check before choosing a resize, compression, format, or upload-validation workflow.
Before you start
- The report does not judge visible subject placement, image quality, identity, or a destination's content policy.
- It does not guarantee that a separate website, application, or destination will accept the result.
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.
Choose the right settings
- Use this route when you need to check an image's pixel size, dimensions, ratio, bytes, or format without rewriting it.
- Use /image-inspector when readable metadata, colors, PPI, or GPS fields matter too.
- Use /custom or a named validator after you know which measured property needs to change.
Worked example
An upload rule mentions pixels and file size, so one image needs both properties checked before choosing an edit.
Starting facts
- The selected image remains unchanged.
- Decoded dimensions and encoded bytes answer different questions.
Observed operation: Read width, height, megapixels, aspect ratio, MIME type, encoded bytes, alpha availability and decoded orientation locally.
Review the result: Compare each reported fact with the current destination rule and open a resize or compression route only for the property that fails.
Boundary: The report cannot assess subject placement, visible quality, identity or an external destination's private acceptance checks.
What you can do
Check an image's size, pixel dimensions, ratio, and file size before upload.
If it does not work
- A malformed or browser-unsupported image cannot be decoded, so its dimensions and file facts cannot be reported.
- Pixel dimensions and encoded byte size answer different questions; a file can meet one limit while failing another.
- EXIF orientation or alpha pixels can affect how the image appears beyond its raw width and height.
Things to know
- The report describes properties decoded by this browser and does not inspect every field another image viewer may expose.
- Compare the measured file with the current destination rule 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
Reports decoded pixel dimensions, aspect ratio, MIME type, encoded byte size, alpha availability, and orientation for one local image.
Check before sharing
A local measurement or export does not guarantee acceptance by an external destination.