The simplest way to generate dynamic on‑brand images at scale

Image Generation API

Need to generate branded visuals automatically without redesigning the same image over and over?

Robolly is the image generation API that lets you design once in a visual editor, then generate thousands of consistent, personalized images instantly via a single URL or API call.

Get startedVisit API docs

  • Simple‑to‑use Image generation API

  • 200+ premade templates

  • Any size or format (JPG, PNG, WebP & more)

  • Secured signed URLs

  • Render forms for no‑code rendering

  • Bulk automation via Datasets

  • Native integrations with Google Sheets, Airtable, Zapier, Make, N8N & more

  • All‑in‑one platform with PDF & video rendering

Why teams choose Robolly for image generation

Most image generation APIs today are pure AI tools (DALL·E, Flux, Gemini, etc.). They're great for creative concepts but terrible for production: inconsistent branding, hallucinations, exploding costs at scale, and no control.

Robolly is different. It's a template‑based dynamic image generation API built for marketing, e‑commerce, SaaS, and growth teams who need reliable, on‑brand visuals every single time.

Image templates collage

Powerful API – Simple as a URL

Developers love how straightforward it is. A single HTTP GET request with your template ID and variables returns a ready‑to‑use image. You can do it manually, it works in email, or create a fully automated flow.

Generate an image with dynamic data:

curl "https://api.robolly.com/templates/12345/render.jpg?title=John+Doe&photo=https://example.com/photo.jpg"

Or in JavaScript for example:

const params = new URLSearchParams({
  title: "John Doe",
  photo: "https://example.com/photo.jpg"
});

fetch(`https://api.robolly.com/templates/12345/render.jpg?${params}`)
  .then(response => response.blob())
  .then(blob => {
    const url = URL.createObjectURL(blob);
    // Save or display your image
  });

Full RESTful API available for listing templates, managing datasets, and more. Check out the API documentation.

Efficient no‑code integrations

Connect directly to Google Sheets, Airtable, Zapier, Make, or N8N. Marketers and ops teams can trigger image generation without ever touching code.

Layer 1

Datasets

Bulk generation made simple

Datasets let you upload a CSV and generate hundreds (or thousands) of unique images in one batch – different headlines, photos, colors, QR codes, you name it.

Perfect for personalized social campaigns, product catalogs, or seasonal promotions. You can even create multi‑template and multi‑format outputs from your data in the same batch.

Datasets interface
Google Sheets add-on interface

Google Sheets Integration

Official Google Add-on

Robolly integrates seamlessly with Google Sheets through its official add-on, available in the Google Workspace Marketplace. Install it once and turn any spreadsheet into a complete visual automation hub.

  • Render images or PDFs directly inside your Google Sheet

  • One‑click bulk rendering of multiple rows

  • Save generated files straight to Google Drive

  • No code required

Render forms

No‑code image generation for everyone

Thanks to Robolly Render forms, you can share image templates with non‑technical teammates or even your clients and give them the power to generate production‑ready images, without touching your codebase or the template editor.

  • Share a simple link, not source files

  • Save hours of back‑and‑forth

  • Keep design control

  • White‑label option available

Render forms interface

All‑in‑one platform

Effortless dynamic images + PDFs and videos

Robolly isn't just an image generation API. It's your complete media automation engine:

  • Dynamic images (social, OG, thumbnails, banners, mockups)

  • PDFs (invoices, certificates, reports)

  • Short videos (product explainers, personalized messages)

One platform, all your media automation needs.

Signed URLs & Hidden render links

Enterprise‑grade security & reliability

Robolly’s infrastructure is built from the ground up for enterprise-grade security and reliability. Every image is delivered instantly and securely, no matter the scale.

  • All renders over HTTPS

  • Signed URLs & hidden render links

  • Optional authentication toggle per template

  • Scales effortlessly from 10 to 100,000+ images per day

I'm impressed. Thumbs up!

"First impressions count, and I'm impressed… Great to see they thought of securing the API with a hash too, and that's not an afterthought… Thumbs up!"

Jean-Jacques Halans

Web developer & security specialist

Real results from real teams

Robolly isn't just another API. It's a solution that people love using. Robolly has proven itself as the go‑to image generation API for startups, SMEs, and enterprises worldwide – all looking to automate their visual content and delight their users.

Simple and intuitive!

"A really cool tool. I was able to save a lot of time automatically generating a certification for my client's customers... there are hundreds of them."

Daniele Righi

Co-founder & Innovation Manager

Cannot recommend highly enough!

"From the very beginning, the Robolly team has exceeded all my expectations. Their support was remarkable – knowledgeable, efficient, and incredibly patient."

Charlie Taylor

Founder of Withsow

These are just a few voices from our customers. Robolly has 5 out of 5 star rating on platforms like Capterra, Trustpilot and G2. Read more customer reviews

Ready to automate your visuals?

Stop spending hours on repetitive design work. Start generating perfect, on‑brand images in seconds. Start your free trial today and see why developers and marketers alike trust Robolly.

Start your free trial

Frequently Asked Questions

What is Robolly's Image Generation API?

Robolly's Image Generation API is a simple, template-based service that lets you generate thousands of consistent, on-brand images instantly. Design your layout once in our visual editor, feed it dynamic data via URL or API, and get pixel-perfect JPG, PNG, WebP, or SVG images every single time.

How is Robolly different from AI tools like DALL·E, Flux, or Midjourney?

Unlike generative AI tools that create a new image from scratch every time (and often vary in style or quality), Robolly uses reusable templates you fully control. This delivers perfect brand consistency, predictable results, and much lower costs at scale. Ideal for marketing, e-commerce, social media, and automated workflows.

Do I need to know how to code to use it?

Not at all. You can generate images with a single URL, use our no-code Render Forms, connect directly via Google Sheets plugin, or automate with Zapier/Make. Developers love the clean REST API, while non-technical teams can work entirely inside Google Sheets or Airtable.

How does the Google Sheets integration work?

Install the official Robolly Google Sheets plugin from the Google Workspace Marketplace. Then render images or PDFs directly inside your spreadsheet with one click or a simple formula. Generated files are automatically saved to Google Drive which is perfect for bulk campaigns without leaving your sheet.

What about bulk image generation?

Extremely easy. Use Datasets to upload a CSV or connect your spreadsheet, then generate hundreds or thousands of unique images in one batch. You can even render multiple templates and formats at once – all with the same on-brand quality.

How fast are the images generated?

Most images render in under 2 seconds. Even large bulk jobs complete in minutes, not hours. Speed and reliability are core to Robolly.

Can I use it for client work or white-label solutions?

Absolutely. White-label options are available, and Render Forms let you share templates with clients or teammates while keeping full design control.