CalcLockCheck pixels and bytes before changing anything
A photo can have a large pixel count but a small compressed file, or modest dimensions but a large file. This tool reports both, plus aspect ratio and portrait, landscape or square orientation. The byte count is the size of the file you selected, not an estimate of how much space all your copies occupy.
Understand what the browser reports
Decoded dimensions reflect how this browser interprets the image, including any orientation handling it applies. Browser-reported MIME type may be missing or based on the file’s extension; it is not a signature-based authenticity check. The preview helps you confirm that you selected the intended photo.
Download a small text report
Generate the report to save the file name, dimensions, byte count and reported type as plain text. It does not contain the photo itself. The file name may contain identifying information, so review the report before sending it to anyone.
This is not a metadata scanner
The inspector does not enumerate EXIF, GPS coordinates, camera details, color profiles or hidden data. It does not tell you that a photo has no metadata and does not strip anything from your original. Use an appropriate metadata inspection workflow if you need to review those fields.
Local processing and practical limits
These browser utilities are separate from the CalcLock iPhone vault. Choosing a photo here does not import it into the app. The tool code processes your selection in this browser, with no image upload, remote processing service or browser-storage persistence. Downloads are saved wherever your browser normally places them.
Inputs must be browser-decodable PNG, JPEG or WebP, up to 25 MB, 24 million pixels and 10,000 pixels per side. A device may run out of memory below these limits. HEIC, GIF, SVG and AVIF are not supported inputs. Animated PNG or WebP is treated as a browser-decoded still frame, not preserved as an animation.
Crop and watermark exports are newly encoded PNG copies. They do not copy original EXIF fields, but that statement applies only to the generated copy. It does not remove information from originals, backups or other shared files, and it does not make the visible image anonymous. Browser encoding may add its own information. The inspector only reads the image and creates a text report; it does not re-encode or strip the selected photo.
Clear removes the current preview, settings and download link, and releases the tool’s object URLs. It does not securely erase device memory or delete downloaded files. Review all downloaded results before sharing or replacing anything.