批量旋转多张图片 90°、180°、270° 或自定义角度。
The Bulk Image Rotation Tool is a powerful browser-based utility for rotating and flipping multiple images at once. Whether you need to correct photo orientations from your camera, fix EXIF rotation issues, or create mirror effects, this tool handles batch processing efficiently without uploading files to any server.
Choose from quick rotation presets (90°, 180°, 270°) or enter custom angles for precise control. Combine rotations with horizontal and vertical flipping to achieve any orientation. All processing happens locally in your browser using HTML5 Canvas, ensuring your images remain private and secure.
The rotation angles rotate images counter-clockwise by default. 90° rotates the image a quarter turn to the left, 180° flips it upside down, and 270° rotates it three-quarters to the left (equivalent to 90° clockwise). You can also enter custom angles for precise rotation needs.
Rotation turns the image around its center point by a specified angle, while flipping creates a mirror image. Flip Horizontal mirrors the image left-to-right (like looking in a mirror), and Flip Vertical mirrors it top-to-bottom (upside-down reflection). You can combine rotation and flipping for complex transformations.
Yes, for 90° and 270° rotations, the width and height are swapped. For example, a 1920×1080 image rotated 90° becomes 1080×1920. For 180° rotations or custom angles, the canvas is sized to fit the rotated image without cropping. Flipping does not change dimensions.
Yes! Enter any angle between -360° and 360° in the Custom Angle field. Positive values rotate counter-clockwise, negative values rotate clockwise. For example, -45° tilts the image 45° to the right, and 45° tilts it 45° to the left. The canvas automatically adjusts to fit the rotated image.
Bulk rotation is essential for correcting photo orientation from cameras/phones, fixing EXIF rotation issues, preparing images for printing or display, standardizing orientation across photo collections, creating mirror effects for design projects, and batch correcting landscape/portrait orientation mistakes.
Yes! You can apply rotation and flipping together. The transformations are applied in sequence: first rotation, then horizontal flip (if enabled), then vertical flip (if enabled). This allows for complex transformations like rotating 90° and flipping horizontally to achieve specific orientations.
For 90°, 180°, and 270° rotations, there is no quality loss as these are lossless transformations. Custom angles may introduce minimal interpolation artifacts due to pixel resampling. All images are exported as PNG to preserve maximum quality and support transparency.
You can rotate multiple images in a single batch. The tool processes each image sequentially to prevent memory overload. Processing time depends on image size and count, but modern browsers handle dozens of images efficiently. All processed images can be downloaded individually or as a ZIP archive.
For images with transparency (PNG, WebP), the transparent areas are preserved. When rotating by custom angles, any new empty space created is filled with transparency. The canvas automatically sizes to fit the entire rotated image, ensuring no content is cropped.
Yes! The tool displays a preview grid showing all your images. Once processed, each preview updates to show the rotated/flipped result. You can download images individually by clicking the download button on each preview, or download all processed images at once as a ZIP file.
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