Related tools: Format Converter, Image Compressor
Yes. Lock the aspect ratio to preserve proportions while resizing, or use preset crop ratios like 16:9, 4:3, and 1:1.
No. All transformations happen entirely in your browser.
Yes. Free to use, no sign-up, no watermarks.
There is no hard limit — processing is constrained by your device memory. Most devices handle images up to 20 MP without issues.