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SnapOtterandGitHub 00b651c9f8 feat(i18n): 21-language pipeline, landing/docs/API wiring, landing+API translations

Shared Claude Code translation pipeline (scripts/i18n, no API key) plus Astro/VitePress/Scalar i18n wiring. Landing and API reference translated into all 20 languages; docs i18n wiring + English source anchors. The translated docs markdown (apps/docs/<locale>/**, 3,620 files) follows in a companion PR because it exceeds GitHub's per-PR CI file limit.

2026-07-11 13:01:55 +08:00

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description

description
Apply a two-color duotone effect with custom shadow and highlight colors.

Duotone

Apply a two-color duotone effect to an image. The image is converted to grayscale, then mapped to a gradient between the shadow color (dark tones) and the highlight color (bright tones).

API Endpoint

POST /api/v1/tools/image/duotone

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

Parameters

Parameter	Type	Required	Default	Description
shadow	string	No	`"#1e3a8a"`	Shadow hex color (applied to dark tones)
highlight	string	No	`"#fbbf24"`	Highlight hex color (applied to bright tones)
intensity	integer	No	`100`	Effect intensity (0-100); 0 returns the original, 100 applies the full duotone

Example Request

curl -X POST http://localhost:1349/api/v1/tools/image/duotone \
  -H "Authorization: Bearer si_your-api-key" \
  -F "file=@photo.jpg" \
  -F 'settings={"shadow": "#0f172a", "highlight": "#f97316", "intensity": 80}'

Example Response

{
  "jobId": "a1b2c3d4-e5f6-7890-abcd-ef1234567890",
  "downloadUrl": "/api/v1/download/a1b2c3d4-e5f6-7890-abcd-ef1234567890/photo.jpg",
  "originalSize": 2450000,
  "processedSize": 1870000
}

Notes

Output format matches the input format. HEIC, RAW, PSD, and SVG inputs are automatically decoded before processing.
An intensity of less than 100 blends the duotone result with the original image, allowing for subtler effects.
Popular duotone combinations include navy/gold, teal/coral, and purple/pink.

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