Pretrained computer vision classifier

Identify print quality with one API call.

A pretrained print quality classifier that sorts an image into one of 10 categories — the print quality of various documents. Use the print quality API immediately, no training required, then adapt it to your own data when you need more.

Pretrained · Nyckel-trained 10 labels out of the box Image input

Try the print quality classifier

Drop in a photo and get the prediction back. No signup, no setup.

What this print quality classifier recognizes

A sample of the 19 labels this pretrained classifier chooses between.

Acceptable
Average
Basic
Deficient
Excellent
Fair
High
Inferior
Low
Medium

Need a label that isn't here? Clone the classifier into your Nyckel console and edit the label set to fit your data.

Call the print quality API

Once you've added this classifier to your console, you get your own copy of it behind your own endpoint. Invoke it with any HTTP client:

curl

curl -X POST "https://www.nyckel.com/v1/functions/YOUR_FUNCTION_ID/invoke" \
  -H "Authorization: Bearer $NYCKEL_ACCESS_TOKEN" \
  -H "Content-Type: application/json" \
  -d '{"data": "https://example.com/photo.jpg"}'

Python

import requests

# Get an access token: https://www.nyckel.com/docs/api/overview/authentication/
token = "YOUR_ACCESS_TOKEN"

response = requests.post(
    "https://www.nyckel.com/v1/functions/YOUR_FUNCTION_ID/invoke",
    headers={"Authorization": "Bearer " + token},
    json={"data": "https://example.com/photo.jpg"},
)
print(response.json())

Example response

{
  "labelName": "Acceptable",
  "labelId": "label_...",
  "confidence": 0.92
}

Under the hood

Model type
Nyckel-trained

Trained on a Nyckel-curated dataset covering 10 print quality categories, served on Nyckel's own infrastructure — your image stays on Nyckel.

Input
Image

Send an image URL or file to the invoke endpoint; the response is a label with a confidence score.

Make it yours
Adaptable

Clone it, then correct predictions and add your own samples in the console — Nyckel retrains automatically, turning this into a custom model tuned to your data.

More than a demo: this page is one of thousands of pretrained functions on Nyckel, an ML classification platform. You can invoke classifiers by API, review predictions, correct labels, collect samples from production traffic, and promote any pretrained function to a private custom model — without changing your integration.

Where teams use print quality classification

Quality Control in Manufacturing

Implementing a false image classification function can aid manufacturers in the quality control process by automatically identifying print defects in labels or packaging. This can significantly reduce manual inspections, ensuring only high-quality prints are shipped to customers.

E-commerce Product Listing Verification

E-commerce platforms can use this function to verify the quality of images uploaded by sellers, ensuring that only high-quality images are displayed to potential buyers. This promotes customer trust and enhances the overall shopping experience.

Advertising Campaign Assessment

Marketing agencies can leverage this function to assess the print quality of advertising materials before distribution. By identifying and addressing issues in advance, companies can ensure their marketing messages are conveyed clearly and attractively.

Document Management Systems

Organizations can integrate this function within document management systems to filter out low-quality, poorly printed documents. This ensures that only legible and professional documents are stored and shared, improving overall communication efficiency.

Automated Photo Printing Services

Photo printing services can utilize this function to assess and reject low-quality images during the upload process. This not only enhances customer satisfaction by ensuring only good quality prints are produced but also reduces waste and operational costs.

Print Media Publishing

Publishing houses can implement the false image classification function to examine print quality before final publication runs. This minimizes the risk of producing subpar printed materials, ensuring that books, magazines, and brochures maintain high standards of quality.

Artwork Authentication

Art galleries and auction houses can use this technology to verify the quality of print reproductions against original artworks. This helps in accurately appraising artworks and ensures that only authentic pieces are presented to buyers, maintaining the integrity of the art market.

Common questions

What's the difference between a zero-shot and a Nyckel-trained classifier?

A zero-shot classifier uses a large foundation model's general knowledge to pick between your labels — no task-specific training, so new or edited labels work immediately. A Nyckel-trained classifier has been trained on labeled examples and runs on Nyckel's own infrastructure, which typically makes it faster, cheaper per call, and more accurate on data that resembles its training set. The "Under the hood" section on this page shows which kind this classifier is, and any classifier can be adapted into a trained one by adding your own examples.

How do I know whether this will work for my application?

Honestly: we can't know in advance — it depends on your data stream and how closely it resembles what this classifier has seen. The reliable way to find out is to measure it on your own data: start invoking the classifier with real traffic, or upload and annotate a set of images in the console — make sure they look like your production data, not idealized examples. Nyckel's evaluation metrics then show you exactly how it performs on that data before you rely on it.

What happens when it makes a mistake?

No classifier is perfect, so Nyckel is built around the correction loop: invokes can be captured for review, you confirm or correct predictions in the console, and corrections become training data. Over time the model adapts to your data distribution — accuracy on your traffic improves with use rather than staying fixed.

Do I need training data to get started?

No. This print quality classifier works out of the box — clone it into your console and you'll have your own API endpoint in under a minute. Training data only enters the picture when you want to adapt it: your corrected predictions and uploaded samples improve the model, and you can also edit the label set to match your needs.

What does it cost to try?

Trying the classifier on this page is free with no signup. Cloning it requires a free account, and the free tier covers your first API calls each month — see nyckel.com/pricing for current limits and paid tiers.

Ready to classify print quality at scale?

Add this pretrained classifier to your Nyckel console — you'll get a live API endpoint in under a minute, and a path to a custom model when you need one.