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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
Generate a waveform visualization as a PNG image from an audio file.

Waveform Image

Generate a waveform visualization as a PNG image from an audio file, with configurable dimensions and color.

API Endpoint

POST /api/v1/tools/audio/waveform-image

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

Parameters

Parameter	Type	Required	Default	Description
width	integer	No	`1024`	Image width in pixels (256 to 3840)
height	integer	No	`256`	Image height in pixels (64 to 1080)
color	string	No	`"#4f46e5"`	Waveform hex color (e.g. `"#4f46e5"`)

Example Request

curl -X POST http://localhost:1349/api/v1/tools/audio/waveform-image \
  -H "Authorization: Bearer si_your-api-key" \
  -F "file=@audio.mp3" \
  -F 'settings={"width": 1920, "height": 400, "color": "#e07832"}'

Example Response

{
  "jobId": "a1b2c3d4-e5f6-7890-abcd-ef1234567890",
  "downloadUrl": "/api/v1/download/a1b2c3d4-e5f6-7890-abcd-ef1234567890/audio.png",
  "originalSize": 4500000,
  "processedSize": 45000
}

Notes

The output is always a PNG image, regardless of the input audio format.
The waveform is rendered on a transparent background.
Useful for thumbnails, social media previews, or embedding in web pages.

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