Image analysis API

Turn property photos into structured data.

The Nezto image analysis API extracts room type, condition, style and features from property images and generates SEO-optimised listing descriptions. Built for portals, platforms and apps that handle property imagery at scale.

Request API accessSee what it returns

API capabilities

Four models. One API call.

  • Image tagging

    Room and style classification

    Identifies room type (kitchen, bathroom, bedroom, living room, exterior), architectural style, and over 120 interior features such as hardwood floors, island hob, natural light, high ceilings and more. Returns confidence scores per tag.

  • Condition scoring

    Standardised condition per room

    Scores each room on a C1–C6 scale (C1 = excellent, C6 = poor condition). Kitchen, bathroom, interior and exterior scored separately. Returns overall property score plus sub-scores and a confidence indicator.

  • Listing descriptions

    AI-generated property descriptions

    Generates a complete, unique listing description in Swedish or English from the image set. Tone is configurable (professional, warm, concise). Output is FHA-compliant and ready to publish directly in your system.

  • SEO image captions

    Alt text for every photo

    Generates SEO-optimised, ADA-compliant alt text for each uploaded image. Proven to increase organic search traffic when applied across listing photo libraries. Supports Swedish and English.

Simple to integrate.

Submit an image, receive structured JSON. No proprietary SDK required. Standard REST with clear documentation provided at onboarding.

Request

POST /v1/image-analysis

{
  "image_url": "https://...",
  "models": [
    "tagging",
    "condition",
    "description",
    "seo_caption"
  ],
  "language": "sv"
}

Response

{
  "room_type": "kitchen",
  "tags": [
    "island_hob",
    "stone_worktop",
    "natural_light",
    "open_plan"
  ],
  "condition": {
    "score": "C2",
    "label": "Good condition",
    "confidence": 0.91
  },
  "description": "Modernt kök med köksö, stenbänkskivor och generöst dagsljusinsläpp...",
  "alt_text": "Modernt kök med köksö och stenbänkskivor i öppen planlösning"
}

Who uses it

Built for platforms that handle scale.

This API is designed for developers and product teams at property portals, listing platforms, apps and proptech companies, not for end brokers. If you're handling hundreds of listings per day, this is for you.

  • Property portals

    Auto-populate listing data

    Reduce agent data entry by pre-filling room types, features and condition on upload. Surface compliance issues before a listing goes live.

  • Residential apps

    Condition tracking over time

    Apps and platforms can evaluate property condition and renovation potential or build an objective record of maintenance and improvements.

  • AVM providers

    Enrich valuation models

    Add condition and quality scores as input features to your existing AVM. Proven to reduce MAE by up to 9% on properties with available imagery.

Specifications

  • Image formats

    JPEG, PNG, HEIC

    Standard smartphone photography is sufficient. No specialist equipment required.

  • Languages

    Swedish & English

    Descriptions and alt text generated natively in sv or en, not translated.

  • Response time

    < 2 seconds

    Per image, synchronous. Batch mode available for high-volume pipelines.

  • Compliance

    GDPR · EU

    All processing within the EU. Data Processing Agreement included at onboarding.

Ready to build with image intelligence?

Request API access and receive documentation, sandbox credentials and onboarding support.

Request API access