Read image metadata from a local JPEG, PNG, or WebP file without uploading it to a server. Useful for verifying export settings, debugging responsive layouts, or checking file size before email attachments.
Reported fields
| Field | Source |
|---|---|
| File name | Browser File object |
| MIME type | Reported content type |
| File size | Byte length on disk |
| Width / height | Decoded raster dimensions after load |
| Aspect ratio | Reduced ratio (e.g. 1920×1080 → 16:9) |
| Megapixels | width × height ÷ 1,000,000 |
Decoding uses the same Canvas pipeline as conversion tools, so dimensions reflect the rendered bitmap, not necessarily raw EXIF tags.
When to use it
- Confirm pixel dimensions of a screenshot or export
- Compare file size before/after compression elsewhere
- Quick sanity check before batch processing
Limitations
EXIF orientation, DPI, GPS, and ICC profiles are not parsed—only decoded pixel width/height. SVG and GIF are out of scope. Corrupt files may fail to load with a generic error.