Branded Thumbnails — Your Logo on Every Image, Generated by API

ThumbAPI generates thumbnails with your company or channel logo built into the design. Send a title, upload your logo as base64, set imageStyle: "with-logo", and get a branded thumbnail that maintains your visual identity across every piece of content.

Consistent branding at scale. No design team needed. One API call per thumbnail.

How It Works

The with-logo style takes your logo via the personImage parameter (base64-encoded PNG or SVG with transparency works best). The AI generates a thumbnail design matched to the title and overlays your logo in a visually balanced position.

1. Encode your logo — PNG with transparent background recommended
2. Send the API request — include the logo in personImage, set imageStyle: "with-logo"
3. Get a branded thumbnail — your logo appears in the design, consistently placed

API Parameters

Why Brand Consistency Matters

Viewers scroll through hundreds of thumbnails per session. A consistent logo placement, color scheme, and visual style makes your content recognizable at a glance — before reading a single word. Over time, your branded thumbnails become a trust signal. People click because they recognize the brand and trust the quality behind it.

Who Uses Branded Thumbnails

• Companies with YouTube channels — every video carries the brand, not just the creator's face.
• SaaS products — tutorial videos, product updates, and webinar recordings all get branded covers.
• Media companies — multiple shows or series under one brand umbrella, each with consistent branding.
• Agencies — manage multiple client brands, each with their own logo in every thumbnail.
• Blogs and newsletters — branded cover images for every post, automatically generated from the title.

Logo Best Practices

• Format: PNG with transparent background. Avoid JPEG (no transparency).
• Size: At least 200x200px for clarity. The API scales it to fit the design.
• Simplicity: Simple logos work better at thumbnail scale. Wordmarks may be too small to read.
• Contrast: Ensure your logo is visible against both light and dark backgrounds.

Personalized vs Faceless vs Branded