Om Prakash

Posted on Apr 22

We Built a Thumbnail Generator API — $0.010 Per Thumbnail

#ai #api #saas #showdev

Every YouTuber has the same problem: good thumbnail designers are expensive and slow. Freelancers charge Rs 500-2000 per thumbnail. Canva Pro is $12.99/month. AI thumbnail tools like Thumbly charge $29/month — before you've even generated one thumbnail.

We just added Thumbnail Generator to PixelAPI. Here's what it does and how to use it.

What It Is

A single API endpoint that generates professional thumbnails from a text prompt. No subscriptions, no design skills. Describe your thumbnail — get a PNG in ~30 seconds.

4 formats supported:

YouTube Thumbnail — 1280x720, 16:9
Instagram Post — 1080x1920, 9:16
LinkedIn Banner — 1200x624, ~1.9:1
YouTube Short — 1080x1920, 9:16

Pricing: 10 credits = $0.010 per thumbnail.

Compare to:

Replicate FLUX.dev: $0.025/image
Indian freelancer: Rs 500-2000/thumbnail
Canva Pro: $12.99/month
Thumbly AI: $29/month

Quick Example

curl -X POST https://api.pixelapi.dev/v1/thumbnail/generate \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "prompt": "A chef holding a pizza with melted cheese, dramatic lighting, dark moody background",
    "preset": "youtube",
    "style": "vibrant"
  }'

Wait ~30 seconds, poll the status endpoint, download your PNG.

Python Example

import requests, time

API_KEY = "YOUR_API_KEY"
BASE_URL = "https://api.pixelapi.dev"

def generate_thumbnail(prompt, preset="youtube", style="vibrant"):
    resp = requests.post(
        f"{BASE_URL}/v1/thumbnail/generate",
        headers={"Authorization": f"Bearer {API_KEY}"},
        json={"prompt": prompt, "preset": preset, "style": style}
    )
    resp.raise_for_status()
    gen_id = resp.json()["generation_id"]

    while True:
        time.sleep(2)
        status = requests.get(
            f"{BASE_URL}/v1/thumbnail/{gen_id}",
            headers={"Authorization": f"Bearer {API_KEY}"}
        ).json()
        if status["status"] == "completed":
            return status["output_url"]
        if status["status"] == "failed":
            raise Exception(status["error_message"])

url = generate_thumbnail(
    prompt="A chef holding a pizza with melted cheese, dramatic lighting",
    preset="youtube", style="vibrant"
)
print(f"Done: {url}")

Style Options

| Style | Best For |
|-------|
| vibrant | Food, fashion, lifestyle (default) |
| bold | Gaming, fitness, motivation |
| cinematic | Travel vlogs, short films |
| dark | Tech reviews, horror, thriller |
| minimal | Business, education, clean aesthetics |

What We Tested Internally

We ran 20+ generations before launch. Results:

Food thumbnails: 8.5/10 — vibrant colors, clear focal subject
Fashion thumbnails: 8-9/10 — strong composition, great color blocking
Gaming thumbnails: 7.5/10 — RGB neon effects rendered well
Indian/festival themes: 9/10 — SDXL handles Indian color palettes naturally

Use Cases

YouTubers with daily uploads — batch generate via API
Social media managers — Instagram, LinkedIn, YouTube from one API
SaaS tools — integrate into your video pipeline
Indian resellers — bulk thumbnails without design overhead

What You Get on Signup

50 free credits. That's 5 free thumbnails.

For $10: 10,000 credits = 1,000 thumbnails. For $50: 60,000 credits = 6,000 thumbnails. At Pro pricing: Rs 8.33/thumbnail.

API Docs: https://pixelapi.dev/tutorials/thumbnail-generator.html
Dashboard: https://pixelapi.dev/app/#thumbnail-gen

Disclosure: I run PixelAPI. Built this because our own GPU infrastructure made it near-zero marginal cost.

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