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SnapOtter 8532f3227b docs: audit all 157 tool pages against live schemas

Reconcile every tool page's parameters, defaults, and response shape against the tool's Zod settings schema and executionHint in code. Notable fixes: color-palette (add count + format params, hex output, median-cut algorithm), favicon (add 5 params, was documented as having none), qr-generate (add logoDataUri), convert (add ppm/eps/tga formats), video-loudnorm (-16 LUFS not -14), smart-crop (async 202 not sync 200), images-to-video (1080x1080 square), and several output-filename and behavior-note corrections.

Also normalize API endpoint paths to /api/v1/tools/<id> (no modality segment) and standardize curl examples on the Docker API port 1349. Verified with a clean docs build.

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

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description

description
Add fade-in and fade-out effects to audio.

Fade Audio

Add fade-in and fade-out effects to the beginning and end of an audio file.

API Endpoint

POST /api/v1/tools/fade-audio

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

Parameters

Parameter	Type	Required	Default	Description
fadeInS	number	No	`1`	Fade-in duration in seconds (0 to 30)
fadeOutS	number	No	`1`	Fade-out duration in seconds (0 to 30)

Example Request

curl -X POST http://localhost:1349/api/v1/tools/fade-audio \
  -H "Authorization: Bearer si_your-api-key" \
  -F "file=@audio.mp3" \
  -F 'settings={"fadeInS": 2, "fadeOutS": 3}'

Example Response

{
  "jobId": "a1b2c3d4-e5f6-7890-abcd-ef1234567890",
  "downloadUrl": "/api/v1/download/a1b2c3d4-e5f6-7890-abcd-ef1234567890/audio.mp3",
  "originalSize": 4500000,
  "processedSize": 4500000
}

Notes

Set either value to 0 to skip that fade direction. At least one must be greater than 0.
The fade duration is clamped to the audio length if it exceeds it.
Output format matches the input format.

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