Batch Rotate Images
Rotate up to 20 images by 90, 180, or 270 degrees in one local batch. The browser decodes each source with its displayed orientation, calculates the correct destination canvas, verifies the encoded result, and creates a ZIP without sending the photographs to a server.
- 本地加工
- 无需帐户
- 每个文件的状态
- 免费使用
专为可靠的批量工作而打造
The tool is designed for quarter-turn corrections across phone photos, scanned pages, product shots, and exported graphics. It changes pixel orientation and output dimensions where required. It is not a lossless JPEG transform and does not preserve every source metadata block.
Correct many orientations together
专为具有清晰输出证据的可重复图像工作流程而构建。
Automatic destination dimensions
您选择的文件保留在当前浏览器会话中。
Per-file failure isolation
每个队列行报告其自己的结果，而不阻塞有效文件。
Local ZIP generation
可下载的输出使用与生成的字节匹配的名称和格式。
How to use Batch Rotate Images
四步工作流程将原始文件与生成的输出分开。
- 1
添加文件
Choose up to 20 images that the browser can decode.
- 2
选择设置
Select a clockwise quarter-turn angle.
- 3
本地处理
Process the queue and compare the new dimensions.
- 4
验证并下载
Download the verified output files in one ZIP.
这个批处理工具的作用
The tool is designed for quarter-turn corrections across phone photos, scanned pages, product shots, and exported graphics. It changes pixel orientation and output dimensions where required. It is not a lossless JPEG transform and does not preserve every source metadata block. Every item is handled independently, so one unsupported or damaged file does not erase successful work from the rest of the queue.
- Correct many orientations together
- Automatic destination dimensions
- Per-file failure isolation
- Local ZIP generation
Batch Rotate Images guide
使用这些检查来获取适合目标的输出，而不是在成功下载时停止。
Understand 90, 180, and 270 degree rotation
A 90-degree clockwise turn moves the top edge to the right, while 270 degrees moves it to the left. Both swap width and height. A 180-degree turn keeps the same dimensions and reverses both axes. These exact quarter turns avoid interpolation ambiguity, but the browser still creates a newly encoded file. The queue lists the resulting width and height so portrait and landscape changes are visible before download.
Account for camera orientation metadata
Phone and camera JPEG files may store pixels in one orientation and rely on EXIF metadata to tell viewers how to display them. Modern browser decoders generally present the oriented visual result. This batch starts from that decoded appearance, applies the chosen turn, and writes a flattened orientation. Because the export does not copy EXIF, downstream software should see the same upright pixels without needing the original orientation tag.
Choose output expectations carefully
JPEG output is useful for opaque photographs but introduces another lossy encoding step. PNG is lossless for the decoded pixels and can retain alpha, although its file can be larger. WebP is retained when browser encoding supports it. Animated sources become a single decoded frame, and formats the browser cannot decode are reported rather than relabeled. The selected background is only used when an opaque JPEG must replace transparent pixels.
Validate a representative sample
After download, inspect text direction, faces, horizon lines, and any asymmetric logo. Check image dimensions in the destination system and confirm that no second orientation correction is being applied by an old workflow. If source files are archival masters or require untouched JPEG coefficients, use a dedicated lossless rotation application instead. This browser workflow favors convenience, privacy, and predictable visible results.
批次质量检查表
当源集合很有价值时，从副本开始，并保留可让您将每个结果追溯到其原始结果的文件名。在处理整个队列之前测试一个小的代表性集，包括最大的文件、透明图像、肖像和风景图像。处理后，比较实际目标中的像素尺寸、格式、文件大小、透明度、文本清晰度、边缘细节和颜色。成功的浏览器状态确认该工具已完成并验证了其预期的输出结构；它不能取代编辑审查或接收平台的规则。保留下载的 ZIP 或 CSV 以及用于运行的设置，然后记录需要单独处理的异常。对于发布工作流程，还要检查描述性替代文本、权限、同意、命名约定、备份策略和缓存行为。这些步骤使可重复的批次比将每个已完成的下载视为自动准备生产更安全。
常见问题
有关格式、隐私、质量和浏览器行为的实用答案。
Can I rotate all images by the same angle?
Yes. One 90, 180, or 270 degree clockwise setting is applied to every decodable file in the queue.
Do 90-degree rotations swap width and height?
Yes. Both 90 and 270 degree turns swap canvas dimensions; 180 degrees keeps them unchanged.
Is JPEG rotation lossless?
No. This browser tool decodes pixels and creates a new JPEG, so another lossy encoding step occurs.
Will EXIF orientation remain?
The visible orientation is flattened into new pixels, while most source metadata is omitted from the canvas export.
Can transparent images be rotated?
Yes when the browser decodes them. PNG output preserves decoded transparency; JPEG uses the selected solid background.
我的照片上传了吗？
No. Rotation, encoding, signature checking, ZIP creation, and download stay in the browser.
Why is an animated image reduced to one frame?
Canvas works from the decoded still frame supplied by the browser and does not rebuild source animation timelines.