Building a Browser-Based Image Rotate & Flip Tool...

Rotating an image sounds trivial — until you need the output canvas to fit the rotated image exactly, handle arbitrary angles, and combine rotation with horizontal/vertical flipping in any order. Here's how we built the Image Rotate tool at Ultimate Tools using Canvas API, with CSS preview transforms for instant feedback and a separate canvas export path for the actual download. Two Rendering Paths The component uses two separate rendering strategies: Preview — CSS transform on an <img> tag. Ins