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
- 無需帳戶
- Per-file status
- 免費使用
Built for dependable batch work
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
Built for repeatable image workflows with clear output evidence.
Automatic destination dimensions
Your selected files remain in the current browser session.
Per-file failure isolation
Each queue row reports its own result without blocking valid files.
Local ZIP generation
Downloadable output uses names and formats that match the generated bytes.
How to use Batch Rotate Images
A four-step workflow keeps the original files separate from generated output.
- 1
Add files
Choose up to 20 images that the browser can decode.
- 2
選擇設定
Select a clockwise quarter-turn angle.
- 3
本地處理
Process the queue and compare the new dimensions.
- 4
Verify and download
Download the verified output files in one ZIP.
What this batch tool does
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
Use these checks to get output that fits the destination rather than stopping at a successful download.
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.
Batch quality checklist
Start with copies when the source collection is valuable, and keep filenames that let you trace every result back to its original. Test a small representative set before processing the full queue, including the largest file, a transparent image, a portrait, and a landscape image. After processing, compare pixel dimensions, format, file size, transparency, text sharpness, edge detail, and color in the actual destination. A successful browser status confirms that this tool completed and verified its expected output structure; it does not replace editorial review or the receiving platform’s rules. Keep the downloaded ZIP or CSV with the settings used for the run, then record exceptions that need individual treatment. For publishing workflows, also check descriptive alternative text, rights, consent, naming conventions, backup policy, and cache behavior. These steps make a repeatable batch safer than treating every completed download as automatically ready for production.
常見問題
Practical answers about formats, privacy, quality, and browser behavior.
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.
我的照片上傳了嗎？
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.