Show HN: ThumbAPI – thumbnail generation API for developers

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Thumbnail API for Automation: n8n, Make, Zapier | ThumbAPI<br>ThumbAPI is now live — start generating thumbnailsTry It Free

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Thumbnail API — Now Live<br>The Thumbnail API Built for Automation Workflows<br>Drop a single REST call into your n8n, Make.com, or Zapier workflow and generate thumbnails for YouTube, Instagram, X, and blog posts. Built for content automation pipelines, faceless channels, and publishing tools that need thumbnails at scale.<br>Try It for FreeAPI Documentation

generate-thumbnail.sh<br>curl -X POST https://api.thumbapi.dev/v1/generate \<br>-H "x-api-key: YOUR_API_KEY" \<br>-H "Content-Type: application/json" \<br>-d '{<br>"title": "10 Tips to Grow Your Channel",<br>"format": "youtube",<br>"imageStyle": "faceless"<br>}'

30s Setup<br>~21s Generation<br>99.9% Uptime

All styles: Faceless, Personalized & Branded

A Complete Thumbnail API for Automated Content Creation<br>Everything you need to generate thumbnails programmatically — multiple formats, flexible styles, and native automation integrations — in a single API endpoint.

Built for Automation Workflows<br>Native integrations with n8n, Make.com, and Zapier. One HTTP node in your workflow generates production-ready thumbnails. Perfect for content automation pipelines, scheduled publishing, and faceless YouTube channels.

Every Platform, One API<br>Generate thumbnails for YouTube (1280x720), Instagram (1080x1080), X/Twitter (1200x675), LinkedIn (1200x627), and blog posts (1200x630). One thumbnail API endpoint covers every platform you publish to.

Simple REST API<br>One POST request, one JSON response. No complex SDKs or OAuth flows. Just an API key and a REST endpoint. Integrate thumbnail generation in minutes, not days.

Faceless Thumbnails<br>Generate professional faceless thumbnails with text-and-graphic designs. Perfect for faceless YouTube channels, automated video content, and blogs that need eye-catching visuals at scale.

Personalized Thumbnails<br>Generate thumbnails with a person's photo included. Save your photo as an asset and use it across every generation. Ideal for YouTube creators, podcasters, and influencer content.

Branded Thumbnails<br>Create branded thumbnails with your logo overlay. Save your logo as an asset and maintain consistent visual identity across all your content automatically.

How the Thumbnail API Works<br>From API key to automated thumbnail generation in under a minute. Integrate into your publishing pipeline, CMS, or automation tool with a single endpoint.

01<br>Get Your Thumbnail API Key<br>Sign up and get your API key in seconds. Start with the free tier — 5 automated thumbnail generations per month, no credit card required.

02<br>Send a Generate Request<br>Make a single POST request with your video title, target platform, and preferred thumbnail style. The API handles the rest — AI design, style optimization, and image rendering.

03<br>Get Your Thumbnail<br>Receive a production-ready WebP thumbnail — all in one JSON response. Ready to integrate into any content automation workflow.

Integrate Thumbnail Generation in Any Language<br>JavaScriptPythoncURL<br>// Generate a YouTube thumbnail with the ThumbAPI<br>const response = await fetch("https://api.thumbapi.dev/v1/generate", {<br>method: "POST",<br>headers: {<br>"x-api-key": THUMB_API_KEY,<br>"Content-Type": "application/json"<br>},<br>body: JSON.stringify({<br>title: "10 Tips to Grow Your Channel",<br>format: "youtube", // youtube | instagram | x | blogpost<br>imageStyle: "faceless" // faceless | with-image | with-logo<br>})<br>});

const { image, format, dimensions } = await response.json();<br>// image → data:image/webp;base64,... (ready to use)<br>// dimensions → { width, height } of the generated image

Thumbnail API Pricing<br>Start free with 5 generations. Scale as you grow — no hidden fees.

Free<br>Try the thumbnail API with no commitment.<br>$0/ month<br>Start Free5 thumbnail generations / month<br>All formats (YouTube, IG, X, Blog, LinkedIn)<br>All image styles<br>WebP & PNG output<br>API access<br>Community support

Creator<br>For solo creators and small projects.<br>$19/ month<br>Get Creator40 thumbnail generations / month<br>All formats & styles<br>WebP & PNG output<br>API access<br>Email support

Most Popular<br>Pro<br>For content teams and automation workflows.<br>$49/ month<br>Get Pro200 thumbnail generations / month<br>All formats & styles<br>Photo & logo assets<br>Reference image datasets<br>Priority generation queue<br>Email support

Business<br>For agencies and high-volume pipelines.<br>$199/ month<br>Get Business750 thumbnail generations / month<br>Everything in Pro<br>Webhook callbacks<br>Dedicated server<br>Team seats<br>99.9% uptime SLA<br>Priority support + Slack channel

Explore ThumbAPI<br>Discover how the thumbnail API fits your workflow — from platform-specific use cases to no-code integrations.

Use Cases<br>Faceless Thumbnails<br>Personalized Thumbnails<br>Branded Thumbnails

Guides<br>YouTube Thumbnails<br>OG Images<br>Blog Covers<br>Instagram Images

Integrations<br>Zapier<br>Make.com<br>n8n

Thumbnail API — Frequently Asked Questions<br>Everything you need to know about integrating automated thumbnail generation into your workflow.

What is a thumbnail...

thumbnail thumbnails youtube generate content faceless

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