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SnapOtter d24e244af4 docs: organize tool pages by modality under /tools/<modality>/

Move all 157 tool pages into image/video/audio/pdf/data subfolders so URLs read /tools/<modality>/<id> (e.g. /tools/image/crop). Nest the image sub-categories under an Image group in the sidebar so the nav reads by modality. Add public/_redirects (301, clean + .html forms) mapping every old flat /tools/<id> URL to its new path so inbound links keep working. Rewrite all internal /tools links. Verified with a clean docs build (no dead links).

2026-06-18 14:12:28 +08:00

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description

description
Rotate images by any angle and flip horizontally or vertically.

Rotate & Flip

Rotate images by an arbitrary angle and/or flip them horizontally or vertically. Rotation and flip operations can be combined in a single request.

API Endpoint

POST /api/v1/tools/image/rotate

Accepts multipart form data with an image file and a JSON settings field.

Parameters

Parameter	Type	Required	Default	Description
angle	number	No	`0`	Rotation angle in degrees (clockwise). Accepts any numeric value.
horizontal	boolean	No	`false`	Flip the image horizontally (mirror)
vertical	boolean	No	`false`	Flip the image vertically

Example Request

Rotate 90 degrees clockwise:

curl -X POST http://localhost:1349/api/v1/tools/image/rotate \
  -H "Authorization: Bearer si_your-api-key" \
  -F "file=@photo.jpg" \
  -F 'settings={"angle": 90}'

Flip horizontally:

curl -X POST http://localhost:1349/api/v1/tools/image/rotate \
  -H "Authorization: Bearer si_your-api-key" \
  -F "file=@photo.jpg" \
  -F 'settings={"horizontal": true}'

Rotate and flip together:

curl -X POST http://localhost:1349/api/v1/tools/image/rotate \
  -H "Authorization: Bearer si_your-api-key" \
  -F "file=@photo.jpg" \
  -F 'settings={"angle": 45, "vertical": true}'

Example Response

{
  "jobId": "a1b2c3d4-e5f6-7890-abcd-ef1234567890",
  "downloadUrl": "/api/v1/download/a1b2c3d4-e5f6-7890-abcd-ef1234567890/photo.jpg",
  "originalSize": 2450000,
  "processedSize": 2480000
}

Notes

Rotation is applied first, then flip operations.
Non-90-degree rotations (e.g. 45 degrees) will enlarge the canvas to fit the rotated image, with transparent or black fill depending on the output format.
Common values: 90, 180, 270 for quarter-turn rotations.
EXIF orientation is auto-applied before processing, so the rotation is relative to the visual orientation.

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