HandyjarFind a tool

Image dimensions.

Check pixels, aspect ratio and file size, right in your browser.

Files stay on your device

Choose an image

Check one image at a time. Open a file or drop it below.

Drop an image here, or

JPEG, PNG, WebP, GIF, BMP, TIFF, ICO, AVIF and SVG. Other images depend on your browser’s decoders.

Choose an image to see its details.

How it works

  1. Choose an image. Open a local file or drop one into the tool.
  2. Check the details. Compare displayed and encoded pixels, and see the aspect ratio and exact byte count.
  3. Keep the information. Copy the details or download a JSON report. Clear to start again.

Frequently asked questions

Why can displayed and encoded dimensions differ?

Encoded pixels describe the stored image grid. An orientation tag can rotate or mirror that grid for display; a quarter turn swaps width and height. Displayed pixels describe the decoded, oriented still image before the preview is scaled to fit this page. Aspect ratio and megapixels use those displayed pixels. JPEG, PNG, WebP, GIF, BMP and TIFF expose encoded dimensions here; other formats show “Not independently read” when that information is unavailable. Orientation tags are read for JPEG, PNG, WebP and TIFF; an unavailable tag is not guessed. Some browsers ignore orientation tags inside WebP files; when a tag is present but this browser did not apply it, the Orientation row says so and the displayed pixels stay as the browser shows them.

Are these pixels, DPI or print dimensions?

These are pixel counts. For example, 1200 × 800 pixels has a 3:2 aspect ratio and 0.96 megapixels. File size is the original file’s exact byte count, including metadata. Compression changes bytes without necessarily changing pixels. DPI and physical print dimensions are not reported or assumed; print size depends on the resolution chosen when printing. SVG is measured at the renderer’s rasterized viewport size, not a count of vector objects.

Which formats and image types can I open?

JPEG, PNG, WebP, GIF, BMP, ICO, AVIF, TIFF and SVG are supported. Other formats, including HEIC, depend on your browser. Files are tried regardless of extension or reported MIME type. Animated and multi-image files show one decoded still image; TIFF uses the first image. ICO uses the image selected by the browser. This is not an inventory of all frames, pages or embedded thumbnails.

The preview is a raster thumbnail; HDR and wide-gamut colors may appear different. SVG scripts and animation do not run, external resources are not fetched, and missing fonts use the bundled fallback. These preview changes do not modify the original.

Are my files private, and can I cancel?

Reading and decoding run in your browser. The tool does not upload, log or persist your images or names. Copy details writes only after you click it; JSON is downloaded only when requested. Cancel & clear stops processing and releases previews and downloads. Selecting another file also clears the previous result.

There is no tool-imposed file-size or pixel limit. Large files can exceed actual browser memory or decoding capabilities. If reading fails, choose another file or try a browser with the needed decoder. Clipboard access may be unavailable; selectable text and JSON export remain available.