Advanced Image Processing

Professional-grade image processing pipeline powered by state-of-the-art AI models. Color grade like a Hollywood colorist, restore degraded photos, generate depth maps, and tag images with semantic understanding — all through a single unified API.

All endpoints accept image URLs and return processed image URLs. Results are stored for 24 hours.

Endpoints

Endpoint	Description	Credits
`POST /v1/images/color-grade`	Professional color grading with presets or manual controls	1
`POST /v1/images/enhance`	AI auto-enhancement (exposure, sharpness, color balance)	1
`POST /v1/images/denoise`	AI noise reduction preserving detail	1
`POST /v1/images/colorize`	Colorize black & white images	2
`POST /v1/images/face-restore`	Restore degraded faces (CodeFormer/GFPGAN)	2
`POST /v1/images/depth-map`	Monocular depth estimation	2
`POST /v1/images/clip-tag`	AI auto-tagging with CLIP	1
`POST /v1/images/clip-embed`	Generate CLIP vector embeddings	1
`POST /v1/images/batch`	Batch process multiple images	1 per image

Authentication: Bearer token (API key)
Base URL: https://apis.fotohub.app

Color Grading

POST /v1/images/color-grade

Apply professional color grading to any image. Choose from cinematic presets used in film production, or dial in precise manual adjustments for temperature, tint, saturation, contrast, shadows, and highlights.

Parameters

Parameter	Type	Required	Default	Description
`image_url`	string	Yes	—	URL of the image to process. Must be publicly accessible. Supports JPEG, PNG, WebP. Max 50MB.
`preset`	string	No	—	Color grading preset. Options: `cinematic`, `warm`, `cool`, `vintage`, `noir`, `teal-orange`, `pastel`. Overrides manual controls when set.
`temperature`	float	No	`0.0`	Color temperature adjustment. Range: -1.0 (cool/blue) to 1.0 (warm/amber).
`tint`	float	No	`0.0`	Green-magenta tint shift. Range: -1.0 (green) to 1.0 (magenta).
`saturation`	float	No	`0.0`	Saturation adjustment. Range: -1.0 (desaturated) to 1.0 (vivid).
`contrast`	float	No	`0.0`	Contrast adjustment. Range: -1.0 (flat) to 1.0 (punchy).
`shadows`	float	No	`0.0`	Shadow level adjustment. Range: -1.0 (crushed blacks) to 1.0 (lifted shadows).
`highlights`	float	No	`0.0`	Highlight level adjustment. Range: -1.0 (pulled highlights) to 1.0 (bright highlights).
`intensity`	float	No	`1.0`	Blend intensity of the grade. Range: 0.0 (no effect) to 1.0 (full effect). Useful for subtle grades.
`output_format`	string	No	`jpg`	Output format: `jpg`, `png`, `webp`.

Preset Reference

Preset	Look	Best For
`cinematic`	Teal shadows, warm highlights, crushed blacks	Film-like scenes, landscapes
`warm`	Golden tones, lifted shadows	Portraits, golden hour
`cool`	Blue tones, high contrast	Tech, winter, moody
`vintage`	Faded blacks, warm midtones, grain	Retro, nostalgia
`noir`	Desaturated, high contrast, dark	Drama, B&W film look
`teal-orange`	Complementary teal/orange split	Blockbuster cinema
`pastel`	Low saturation, soft tones	Fashion, editorial

Response

json

{
  "output_url": "https://s1.fotohub.app/storage/v1/object/public/photos/processed/cg_a1b2c3d4.jpg",
  "usd_charged": 1,
  "billing": {
    "method": "wallet",
    "usd_charged": 1,
    "usd_charged": 0,
  },
  "applied": {
    "preset": "cinematic",
    "intensity": 1.0
  },
  "processing_time_ms": 890
}

Reading the billing block

method is credits while your plan's monthly allowance covers the request, and usd_charged is 0 because no money moved. Once the allowance is exhausted the same call returns "method": "wallet" with the USD amount in usd_charged (see Pricing for the per-operation figures). usd_charged is mirror of the same charge -- read usd_charged.

Code Examples

Python SDKTypeScript SDKcURL

python

from fotohub import FotoHub

client = FotoHub(api_key="fh_live_your_api_key")

# Using a preset
result = client.images.color_grade(
    image_url="https://example.com/photo.jpg",
    preset="cinematic"
)

# Manual controls
result = client.images.color_grade(
    image_url="https://example.com/photo.jpg",
    temperature=0.3,
    contrast=0.2,
    shadows=0.1,
    highlights=-0.1,
    saturation=0.15,
    intensity=0.8
)

print(result.output_url)

typescript

import { FotoHub } from "fotohub";

const client = new FotoHub({ apiKey: "fh_live_your_api_key" });

// Using a preset
const result = await client.images.colorGrade({
  imageUrl: "https://example.com/photo.jpg",
  preset: "teal-orange",
});

// Manual controls
const result = await client.images.colorGrade({
  imageUrl: "https://example.com/photo.jpg",
  temperature: 0.3,
  contrast: 0.2,
  shadows: 0.1,
  highlights: -0.1,
  saturation: 0.15,
  intensity: 0.8,
});

console.log(result.outputUrl);

bash

curl -X POST https://apis.fotohub.app/v1/images/color-grade \
  -H "Authorization: Bearer fh_live_your_api_key" \
  -H "Content-Type: application/json" \
  -d '{
    "image_url": "https://example.com/photo.jpg",
    "preset": "cinematic",
    "intensity": 0.8
  }'

AI Enhancement

POST /v1/images/enhance

Automatic AI-powered enhancement that intelligently adjusts exposure, white balance, sharpness, color vibrancy, and dynamic range. Choose a scene-specific mode for optimized results.

Parameters

Parameter	Type	Required	Default	Description
`image_url`	string	Yes	—	URL of the image to process. Must be publicly accessible. Supports JPEG, PNG, WebP. Max 50MB.
`mode`	string	No	`auto`	Enhancement mode. Options: `auto`, `portrait`, `landscape`, `product`, `food`.
`strength`	float	No	`0.7`	Enhancement strength. Range: 0.0 (subtle) to 1.0 (maximum).
`sharpen`	boolean	No	`true`	Apply intelligent sharpening after enhancement.
`output_format`	string	No	`jpg`	Output format: `jpg`, `png`, `webp`.

Enhancement Modes

auto — Analyzes content and applies balanced adjustments.
portrait — Optimizes skin tones, softens background, balances lighting on faces.
landscape — Boosts sky blues, enhances greens, increases clarity.
product — Neutral white balance, removes color casts, clean look.
food — Warm tones, vibrant colors, appetizing appearance.

Response

json

{
  "output_url": "https://s1.fotohub.app/storage/v1/object/public/photos/processed/enh_b2c3d4e5.jpg",
  "usd_charged": 1,
  "billing": {
    "method": "wallet",
    "usd_charged": 1,
    "usd_charged": 0,
  },
  "adjustments_applied": {
    "exposure": 0.15,
    "white_balance": "corrected",
    "sharpness": 0.3,
    "vibrance": 0.2,
    "dynamic_range": "expanded"
  },
  "processing_time_ms": 1240
}

Code Examples

Python SDKTypeScript SDKcURL

python

from fotohub import FotoHub

client = FotoHub(api_key="fh_live_your_api_key")

result = client.images.enhance(
    image_url="https://example.com/portrait.jpg",
    mode="portrait",
    strength=0.8
)

print(result.output_url)

typescript

import { FotoHub } from "fotohub";

const client = new FotoHub({ apiKey: "fh_live_your_api_key" });

const result = await client.images.enhance({
  imageUrl: "https://example.com/portrait.jpg",
  mode: "portrait",
  strength: 0.8,
});

console.log(result.outputUrl);

bash

curl -X POST https://apis.fotohub.app/v1/images/enhance \
  -H "Authorization: Bearer fh_live_your_api_key" \
  -H "Content-Type: application/json" \
  -d '{
    "image_url": "https://example.com/portrait.jpg",
    "mode": "portrait",
    "strength": 0.8
  }'

AI Denoising

POST /v1/images/denoise

Advanced AI noise reduction that removes grain, compression artifacts, and sensor noise while preserving fine details and textures. Ideal for low-light photos, high-ISO images, and heavily compressed files.

Parameters

Parameter	Type	Required	Default	Description
`image_url`	string	Yes	—	URL of the image to process. Must be publicly accessible. Supports JPEG, PNG, WebP. Max 50MB.
`strength`	float	No	`0.5`	Denoising strength. Range: 0.0 (light) to 1.0 (aggressive). Higher values remove more noise but may soften fine details.
`preserve_detail`	boolean	No	`true`	When true, uses detail-aware denoising that protects edges and textures.
`output_format`	string	No	`jpg`	Output format: `jpg`, `png`, `webp`.

Response

json

{
  "output_url": "https://s1.fotohub.app/storage/v1/object/public/photos/processed/dn_c3d4e5f6.jpg",
  "usd_charged": 1,
  "billing": {
    "method": "wallet",
    "usd_charged": 1,
    "usd_charged": 0,
  },
  "noise_level_detected": "high",
  "processing_time_ms": 1680
}

Code Examples

Python SDKTypeScript SDKcURL

python

from fotohub import FotoHub

client = FotoHub(api_key="fh_live_your_api_key")

result = client.images.denoise(
    image_url="https://example.com/noisy-photo.jpg",
    strength=0.7,
    preserve_detail=True
)

print(result.output_url)

typescript

import { FotoHub } from "fotohub";

const client = new FotoHub({ apiKey: "fh_live_your_api_key" });

const result = await client.images.denoise({
  imageUrl: "https://example.com/noisy-photo.jpg",
  strength: 0.7,
  preserveDetail: true,
});

console.log(result.outputUrl);

bash

curl -X POST https://apis.fotohub.app/v1/images/denoise \
  -H "Authorization: Bearer fh_live_your_api_key" \
  -H "Content-Type: application/json" \
  -d '{
    "image_url": "https://example.com/noisy-photo.jpg",
    "strength": 0.7,
    "preserve_detail": true
  }'

Colorize B&W Images

POST /v1/images/colorize

Automatically colorize black and white or grayscale images using deep learning. The model understands scene context, common object colors, and historical color palettes to produce natural, realistic colorization.

Parameters

Parameter	Type	Required	Default	Description
`image_url`	string	Yes	—	URL of the B&W or grayscale image. Must be publicly accessible. Supports JPEG, PNG, WebP. Max 50MB.
`saturation`	float	No	`1.0`	Output saturation multiplier. Range: 0.5 (muted) to 2.0 (vivid). Default produces natural colors.
`artistic`	boolean	No	`false`	When true, allows more creative/stylized colorization rather than strictly realistic.
`output_format`	string	No	`jpg`	Output format: `jpg`, `png`, `webp`.

Response

json

{
  "output_url": "https://s1.fotohub.app/storage/v1/object/public/photos/processed/col_d4e5f6g7.jpg",
  "usd_charged": 2,
  "billing": {
    "method": "wallet",
    "usd_charged": 2,
    "usd_charged": 0,
  },
  "processing_time_ms": 3450
}

Code Examples

Python SDKTypeScript SDKcURL

python

from fotohub import FotoHub

client = FotoHub(api_key="fh_live_your_api_key")

result = client.images.colorize(
    image_url="https://example.com/old-bw-photo.jpg",
    saturation=1.2
)

print(result.output_url)

typescript

import { FotoHub } from "fotohub";

const client = new FotoHub({ apiKey: "fh_live_your_api_key" });

const result = await client.images.colorize({
  imageUrl: "https://example.com/old-bw-photo.jpg",
  saturation: 1.2,
});

console.log(result.outputUrl);

bash

curl -X POST https://apis.fotohub.app/v1/images/colorize \
  -H "Authorization: Bearer fh_live_your_api_key" \
  -H "Content-Type: application/json" \
  -d '{
    "image_url": "https://example.com/old-bw-photo.jpg",
    "saturation": 1.2
  }'

Face Restoration

POST /v1/images/face-restore

Restore degraded, blurry, or low-resolution faces using state-of-the-art face restoration models. Recovers facial details, fixes artifacts, and produces sharp, natural-looking faces from heavily degraded inputs.

Parameters

Parameter	Type	Required	Default	Description
`image_url`	string	Yes	—	URL of the image with degraded faces. Must be publicly accessible. Supports JPEG, PNG, WebP. Max 50MB.
`model`	string	No	`codeformer`	Restoration model. Options: `codeformer` (best quality, slower), `gfpgan` (faster, good quality).
`fidelity`	float	No	`0.7`	Balance between quality and fidelity to original. Range: 0.0 (max quality, less faithful) to 1.0 (max fidelity, less enhancement). Only applies to CodeFormer.
`upscale`	integer	No	`1`	Upscale factor for the output. Options: `1` (original size), `2` (2x), `4` (4x).
`background_enhance`	boolean	No	`false`	When true, also enhances the non-face regions of the image.
`output_format`	string	No	`jpg`	Output format: `jpg`, `png`, `webp`.

Model Comparison

Model	Quality	Speed	Best For
`codeformer`	Excellent	~3s per face	Severely degraded faces, old photos, heavy compression
`gfpgan`	Good	~1.5s per face	Light degradation, batch processing, real-time apps

Response

json

{
  "output_url": "https://s1.fotohub.app/storage/v1/object/public/photos/processed/fr_e5f6g7h8.jpg",
  "usd_charged": 2,
  "billing": {
    "method": "wallet",
    "usd_charged": 2,
    "usd_charged": 0,
  },
  "faces_detected": 3,
  "faces_restored": 3,
  "model_used": "codeformer",
  "processing_time_ms": 4120
}

Code Examples

Python SDKTypeScript SDKcURL

python

from fotohub import FotoHub

client = FotoHub(api_key="fh_live_your_api_key")

result = client.images.face_restore(
    image_url="https://example.com/old-family-photo.jpg",
    model="codeformer",
    fidelity=0.6,
    upscale=2,
    background_enhance=True
)

print(f"Restored {result.faces_restored} faces")
print(result.output_url)

typescript

import { FotoHub } from "fotohub";

const client = new FotoHub({ apiKey: "fh_live_your_api_key" });

const result = await client.images.faceRestore({
  imageUrl: "https://example.com/old-family-photo.jpg",
  model: "codeformer",
  fidelity: 0.6,
  upscale: 2,
  backgroundEnhance: true,
});

console.log(`Restored ${result.facesRestored} faces`);
console.log(result.outputUrl);

bash

curl -X POST https://apis.fotohub.app/v1/images/face-restore \
  -H "Authorization: Bearer fh_live_your_api_key" \
  -H "Content-Type: application/json" \
  -d '{
    "image_url": "https://example.com/old-family-photo.jpg",
    "model": "codeformer",
    "fidelity": 0.6,
    "upscale": 2,
    "background_enhance": true
  }'

Depth Map Estimation

POST /v1/images/depth-map

Generate monocular depth maps from single images using state-of-the-art depth estimation models. Outputs a grayscale depth image where brightness represents distance from the camera. Useful for 3D effects, parallax, bokeh simulation, and scene understanding.

Parameters

Parameter	Type	Required	Default	Description
`image_url`	string	Yes	—	URL of the image to process. Must be publicly accessible. Supports JPEG, PNG, WebP. Max 50MB.
`model`	string	No	`midas`	Depth estimation model. Options: `midas` (general-purpose, outdoor/indoor), `zoedepth` (metric depth, best for indoor scenes).
`output_type`	string	No	`grayscale`	Output format type. Options: `grayscale` (standard depth map), `colored` (viridis colormap visualization), `raw` (16-bit PNG with metric depth values).
`invert`	boolean	No	`false`	Invert depth values (near=dark, far=bright instead of default near=bright, far=dark).
`output_format`	string	No	`png`	Output file format: `png`, `webp`.

Model Comparison

Model	Type	Accuracy	Best For
`midas`	Relative depth	High	General scenes, outdoor, landscapes, mixed content
`zoedepth`	Metric depth	Very High	Indoor scenes, room layout, furniture, architecture

Response

json

{
  "output_url": "https://s1.fotohub.app/storage/v1/object/public/photos/processed/dm_f6g7h8i9.png",
  "usd_charged": 2,
  "billing": {
    "method": "wallet",
    "usd_charged": 2,
    "usd_charged": 0,
  },
  "model_used": "midas",
  "depth_range": {
    "min": 0.0,
    "max": 1.0
  },
  "processing_time_ms": 2180
}

Code Examples

Python SDKTypeScript SDKcURL

python

from fotohub import FotoHub

client = FotoHub(api_key="fh_live_your_api_key")

# General depth map
result = client.images.depth_map(
    image_url="https://example.com/landscape.jpg",
    model="midas",
    output_type="colored"
)

# Indoor metric depth
result = client.images.depth_map(
    image_url="https://example.com/room.jpg",
    model="zoedepth",
    output_type="raw"
)

print(result.output_url)

typescript

import { FotoHub } from "fotohub";

const client = new FotoHub({ apiKey: "fh_live_your_api_key" });

const result = await client.images.depthMap({
  imageUrl: "https://example.com/landscape.jpg",
  model: "midas",
  outputType: "colored",
});

console.log(result.outputUrl);

bash

curl -X POST https://apis.fotohub.app/v1/images/depth-map \
  -H "Authorization: Bearer fh_live_your_api_key" \
  -H "Content-Type: application/json" \
  -d '{
    "image_url": "https://example.com/landscape.jpg",
    "model": "midas",
    "output_type": "colored"
  }'

CLIP Auto-Tagging

POST /v1/images/clip-tag

Automatically tag images with descriptive labels using OpenAI's CLIP model. Returns ranked tags with confidence scores covering objects, scenes, styles, colors, and activities detected in the image.

Parameters

Parameter	Type	Required	Default	Description
`image_url`	string	Yes	—	URL of the image to tag. Must be publicly accessible. Supports JPEG, PNG, WebP. Max 50MB.
`model`	string	No	`clip-vit-large`	CLIP model variant. Options: `clip-vit-large` (more accurate, slower), `clip-vit-base` (faster, slightly less accurate).
`max_tags`	integer	No	`20`	Maximum number of tags to return. Range: 1–50.
`threshold`	float	No	`0.15`	Minimum confidence threshold for returned tags. Range: 0.0–1.0. Lower values return more tags.
`categories`	array	No	all	Filter tags by category. Options: `objects`, `scenes`, `styles`, `colors`, `activities`, `emotions`.

Response

json

{
  "tags": [
    { "label": "sunset", "confidence": 0.94, "category": "scenes" },
    { "label": "beach", "confidence": 0.91, "category": "scenes" },
    { "label": "orange", "confidence": 0.87, "category": "colors" },
    { "label": "silhouette", "confidence": 0.82, "category": "objects" },
    { "label": "romantic", "confidence": 0.76, "category": "emotions" },
    { "label": "photography", "confidence": 0.71, "category": "styles" },
    { "label": "walking", "confidence": 0.68, "category": "activities" }
  ],
  "model_used": "clip-vit-large",
  "usd_charged": 1,
  "billing": {
    "method": "wallet",
    "usd_charged": 1,
    "usd_charged": 0,
  },
  "processing_time_ms": 520
}

Code Examples

Python SDKTypeScript SDKcURL

python

from fotohub import FotoHub

client = FotoHub(api_key="fh_live_your_api_key")

result = client.images.clip_tag(
    image_url="https://example.com/vacation-photo.jpg",
    max_tags=15,
    threshold=0.2,
    categories=["objects", "scenes", "activities"]
)

for tag in result.tags:
    print(f"{tag.label}: {tag.confidence:.2f}")

typescript

import { FotoHub } from "fotohub";

const client = new FotoHub({ apiKey: "fh_live_your_api_key" });

const result = await client.images.clipTag({
  imageUrl: "https://example.com/vacation-photo.jpg",
  maxTags: 15,
  threshold: 0.2,
  categories: ["objects", "scenes", "activities"],
});

result.tags.forEach((tag) => {
  console.log(`${tag.label}: ${tag.confidence.toFixed(2)}`);
});

bash

curl -X POST https://apis.fotohub.app/v1/images/clip-tag \
  -H "Authorization: Bearer fh_live_your_api_key" \
  -H "Content-Type: application/json" \
  -d '{
    "image_url": "https://example.com/vacation-photo.jpg",
    "max_tags": 15,
    "threshold": 0.2,
    "categories": ["objects", "scenes", "activities"]
  }'

CLIP Embeddings

POST /v1/images/clip-embed

Generate dense vector embeddings from images using CLIP. Returns a 512 or 768-dimensional float vector that captures semantic meaning of the image. Use these embeddings for visual similarity search, content-based recommendations, clustering, deduplication, and content moderation.

Parameters

Parameter	Type	Required	Default	Description
`image_url`	string	Yes	—	URL of the image to embed. Must be publicly accessible. Supports JPEG, PNG, WebP. Max 50MB.
`model`	string	No	`clip-vit-large`	CLIP model variant. `clip-vit-large` returns 768-dim vectors. `clip-vit-base` returns 512-dim vectors.
`normalize`	boolean	No	`true`	L2-normalize the embedding vector (recommended for cosine similarity search).

Use Cases for CLIP Embeddings

Visual search — Find visually similar images in your library by comparing embedding distances.
Content moderation — Compare image embeddings against known violation embeddings.
Auto-categorization — Cluster images by semantic similarity without manual labeling.
Deduplication — Detect near-duplicate images even with crops, filters, or compression differences.
Cross-modal search — Combine with text embeddings (same CLIP space) to search images by text query.

Response

json

{
  "embedding": [0.0234, -0.0891, 0.0452, 0.1123, ...],
  "dimensions": 768,
  "model_used": "clip-vit-large",
  "normalized": true,
  "usd_charged": 1,
  "billing": {
    "method": "wallet",
    "usd_charged": 1,
    "usd_charged": 0,
  },
  "processing_time_ms": 380
}

Code Examples

Python SDKTypeScript SDKcURL

python

from fotohub import FotoHub
import numpy as np

client = FotoHub(api_key="fh_live_your_api_key")

# Generate embedding
result = client.images.clip_embed(
    image_url="https://example.com/product.jpg",
    model="clip-vit-large"
)

embedding = np.array(result.embedding)
print(f"Embedding shape: {embedding.shape}")  # (768,)

# Compare similarity between two images
result_a = client.images.clip_embed(image_url="https://example.com/img_a.jpg")
result_b = client.images.clip_embed(image_url="https://example.com/img_b.jpg")

similarity = np.dot(result_a.embedding, result_b.embedding)
print(f"Cosine similarity: {similarity:.4f}")

typescript

import { FotoHub } from "fotohub";

const client = new FotoHub({ apiKey: "fh_live_your_api_key" });

// Generate embedding
const result = await client.images.clipEmbed({
  imageUrl: "https://example.com/product.jpg",
  model: "clip-vit-large",
});

console.log(`Dimensions: ${result.dimensions}`); // 768

// Compare two images
const a = await client.images.clipEmbed({ imageUrl: "https://example.com/img_a.jpg" });
const b = await client.images.clipEmbed({ imageUrl: "https://example.com/img_b.jpg" });

const similarity = a.embedding.reduce(
  (sum, val, i) => sum + val * b.embedding[i], 0
);
console.log(`Cosine similarity: ${similarity.toFixed(4)}`);

bash

curl -X POST https://apis.fotohub.app/v1/images/clip-embed \
  -H "Authorization: Bearer fh_live_your_api_key" \
  -H "Content-Type: application/json" \
  -d '{
    "image_url": "https://example.com/product.jpg",
    "model": "clip-vit-large",
    "normalize": true
  }'

Batch Processing

POST /v1/images/batch

Process multiple images in a single request with one or more operations applied in sequence. Supports up to 50 images per batch. Operations are applied as a pipeline — each operation's output feeds into the next.

Parameters

Parameter	Type	Required	Default	Description
`images`	array	Yes	—	Array of image URLs to process. Max 50 items. Each must be publicly accessible.
`operations`	array	Yes	—	Ordered list of operations to apply to each image. Operations are applied sequentially as a pipeline.
`parallel`	boolean	No	`true`	Process images in parallel (faster) or sequentially (lower resource usage).
`output_format`	string	No	`jpg`	Output format for all results: `jpg`, `png`, `webp`.

Operation Objects

Each operation in the operations array has a type and operation-specific parameters:

json

{
  "type": "enhance",
  "mode": "portrait",
  "strength": 0.8
}

Available operation types: color-grade, enhance, denoise, colorize, face-restore, depth-map, clip-tag, clip-embed.

Response

json

{
  "results": [
    {
      "input_url": "https://example.com/photo1.jpg",
      "output_url": "https://s1.fotohub.app/storage/v1/object/public/photos/processed/batch_001.jpg",
      "status": "success",
      "processing_time_ms": 2340
    },
    {
      "input_url": "https://example.com/photo2.jpg",
      "output_url": "https://s1.fotohub.app/storage/v1/object/public/photos/processed/batch_002.jpg",
      "status": "success",
      "processing_time_ms": 2180
    },
    {
      "input_url": "https://example.com/photo3.jpg",
      "output_url": null,
      "status": "error",
      "error": "Image URL returned 404"
    }
  ],
  "summary": {
    "total": 3,
    "succeeded": 2,
    "failed": 1
  },
  "usd_charged": 4,
  "billing": {
    "method": "wallet",
    "usd_charged": 4,
    "usd_charged": 0,
  },
  "total_processing_time_ms": 4890
}

Code Examples

Python SDKTypeScript SDKcURL

python

from fotohub import FotoHub

client = FotoHub(api_key="fh_live_your_api_key")

# Batch enhance + color grade a set of photos
result = client.images.batch(
    images=[
        "https://example.com/photo1.jpg",
        "https://example.com/photo2.jpg",
        "https://example.com/photo3.jpg",
        "https://example.com/photo4.jpg",
    ],
    operations=[
        {"type": "denoise", "strength": 0.5},
        {"type": "enhance", "mode": "portrait", "strength": 0.7},
        {"type": "color-grade", "preset": "cinematic"},
    ]
)

for item in result.results:
    if item.status == "success":
        print(f"Done: {item.output_url}")
    else:
        print(f"Failed: {item.error}")

print(f"Total credits: {result.usd_charged}")

typescript

import { FotoHub } from "fotohub";

const client = new FotoHub({ apiKey: "fh_live_your_api_key" });

const result = await client.images.batch({
  images: [
    "https://example.com/photo1.jpg",
    "https://example.com/photo2.jpg",
    "https://example.com/photo3.jpg",
    "https://example.com/photo4.jpg",
  ],
  operations: [
    { type: "denoise", strength: 0.5 },
    { type: "enhance", mode: "portrait", strength: 0.7 },
    { type: "color-grade", preset: "cinematic" },
  ],
});

result.results.forEach((item) => {
  if (item.status === "success") {
    console.log(`Done: ${item.outputUrl}`);
  } else {
    console.log(`Failed: ${item.error}`);
  }
});

console.log(`Total credits: ${result.usdCharged}`);

bash

curl -X POST https://apis.fotohub.app/v1/images/batch \
  -H "Authorization: Bearer fh_live_your_api_key" \
  -H "Content-Type: application/json" \
  -d '{
    "images": [
      "https://example.com/photo1.jpg",
      "https://example.com/photo2.jpg",
      "https://example.com/photo3.jpg"
    ],
    "operations": [
      {"type": "denoise", "strength": 0.5},
      {"type": "enhance", "mode": "portrait", "strength": 0.7},
      {"type": "color-grade", "preset": "cinematic"}
    ]
  }'

Pricing

Operation	USD Cost	Web App Credits	Description
Color Grade	$0.0536	1	Preset or manual color grading
Enhance	$0.0536	1	AI auto-enhancement
Denoise	$0.0536	1	AI noise reduction
Colorize	$0.1072	2	B&W to color
Face Restore	$0.1072	2	CodeFormer/GFPGAN face restoration
Depth Map	$0.1072	2	Monocular depth estimation
CLIP Tag	$0.0536	1	Auto-tagging with confidence scores
CLIP Embed	$0.0536	1	Vector embedding generation
Batch	$0.0536/image	1/image	Per-image cost, operations do not multiply cost

API operations are charged directly in USD from your prepaid wallet balance at the rates shown above. Web app credits apply only to the consumer dashboard at fotohub.app.

Batch Pricing

Batch processing charges $0.0536 per image regardless of how many operations are in the pipeline. A batch of 10 images with 3 operations each costs $0.536 total.

Best Practices

Image Quality

Input resolution matters — Higher resolution inputs produce better results for all operations. Minimum recommended: 512x512px.
Use appropriate formats — Submit JPEG for photos, PNG for graphics with transparency. WebP is accepted but JPEG typically produces best results for photographic content.
Check file size — Max 50MB per image. For batch operations, ensure all URLs are accessible and return images (not HTML error pages).

Color Grading Workflow

Start with a preset, then adjust intensity to blend it down for subtlety.
For consistent series (wedding albums, product shoots), apply the same preset and manual settings via batch processing.
Use temperature and tint for white balance correction before applying creative grades.

Face Restoration

Use codeformer with fidelity=0.5 for severely degraded faces (old scanned photos, extreme compression).
Use gfpgan for light touch-ups where speed matters.
Enable background_enhance=true only when the entire image needs restoration, not just faces.
For group photos, both models handle multiple faces automatically.

CLIP Embeddings for Search

Always use normalize=true (default) for cosine similarity comparisons.
Store embeddings in a vector database (pgvector, Pinecone, Qdrant) for efficient similarity search.
Use clip-vit-large (768-dim) for production search systems — the accuracy improvement over clip-vit-base (512-dim) is significant.
Embeddings are deterministic — same image + same model always produces the same vector.

Batch Processing

Keep batches under 50 images for optimal throughput.
Use parallel=true (default) for independent images. Use parallel=false only if you hit rate limits.
Order operations logically: denoise first, then enhance, then color grade. Denoising after color grading can remove intended grain.
Failed images in a batch do not stop processing of remaining images. Always check the status field per result.

Error Handling

All endpoints return standard HTTP error codes. See Errors for the full reference.
Common errors: 401 (invalid API key), 402 (insufficient credits), 422 (invalid parameters), 413 (image too large).
Batch operations return per-image errors in the response body even when the HTTP status is 200.

Advanced Image Processing ​

Endpoints ​

Color Grading ​

Parameters ​

Response ​

Code Examples ​

AI Enhancement ​

Parameters ​

Response ​

Code Examples ​

AI Denoising ​

Parameters ​

Response ​

Code Examples ​

Colorize B&W Images ​

Parameters ​

Response ​

Code Examples ​

Face Restoration ​

Parameters ​

Response ​

Code Examples ​

Depth Map Estimation ​

Parameters ​

Response ​

Code Examples ​

CLIP Auto-Tagging ​

Parameters ​

Response ​

Code Examples ​

CLIP Embeddings ​

Parameters ​

Response ​

Code Examples ​

Batch Processing ​

Parameters ​

Operation Objects ​

Response ​

Code Examples ​

Pricing ​

Best Practices ​

Image Quality ​

Color Grading Workflow ​

Face Restoration ​

CLIP Embeddings for Search ​

Batch Processing ​

Error Handling ​

Advanced Image Processing

Endpoints

Color Grading

Parameters

Response

Code Examples

AI Enhancement

Parameters

Response

Code Examples

AI Denoising

Parameters

Response

Code Examples

Colorize B&W Images

Parameters

Response

Code Examples

Face Restoration

Parameters

Response

Code Examples

Depth Map Estimation

Parameters

Response

Code Examples

CLIP Auto-Tagging

Parameters

Response

Code Examples

CLIP Embeddings

Parameters

Response

Code Examples

Batch Processing

Parameters

Operation Objects

Response

Code Examples

Pricing

Best Practices

Image Quality

Color Grading Workflow

Face Restoration

CLIP Embeddings for Search

Batch Processing

Error Handling