CalcLockKeep the useful part of a photo
Drag from one corner to the opposite corner to select a crop. The dimmed area is excluded from the generated PNG. The white outline marks the selection; neither the dimming nor the outline is written into the output. On a phone, scroll outside the image.
Use exact coordinates without dragging
The keyboard-accessible controls use original-image pixels. X and Y begin at the top-left corner. Width and height must be positive whole numbers, and the crop must stay inside the decoded photo. Center square crop provides a useful starting point for profile images; adjust X or Y to keep the subject in frame.
Crop first, resize second
Cropping removes part of the frame without stretching what remains. It does not automatically resize the result to a service’s required pixel dimensions. Use the resizer afterward if you need a specific width or height. Download and inspect the cropped file before replacing or sharing any copy.
Cropping is not comprehensive anonymization
The original file is untouched. Anything still visible in the crop can reveal context, and existing originals or backups remain elsewhere. To hide a detail while keeping the rest of the frame, use solid redaction instead.
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.