Bannerbear and Polotno SDK both produce rendered images and video from templates, but they're built for opposite jobs. Bannerbear is for systems that generate media — your team designs templates in their dashboard, your code calls an API, your users receive finished assets. Polotno SDK is for products where users design media — your customers open an editor inside your app and create the templates themselves. The right choice almost always depends on which side of that line you're on.
Pick the one that matches what you're building
Pick Bannerbear if…
- You generate assets from your own data, not your users' designs — Bannerbear's whole workflow assumes you control the templates and your code triggers the renders.
- You want a mature ecosystem of Zapier, Make.com, and Airtable plugins — Bannerbear has invested years in its no-code integrations, and that ecosystem is broader than ours.
- You don't need to embed an editor in your product — Bannerbear doesn't ship one; if you build on it and later need an editor, you'd be writing it yourself.
- You're a non-developer team that wants a hosted dashboard — Bannerbear's UI is designed for marketers and ops teams to operate without engineering.
Pick Polotno SDK if…
- Your users need to design or edit creatives inside your app — this is exactly the gap Polotno fills, and the gap Bannerbear leaves open.
- You want one JSON schema for editing AND rendering — same data shape from canvas to API, so user-edited variants and programmatic generation share infrastructure.
- You need to self-host for compliance or data sovereignty — Polotno offers self-hosted rendering and editing; Bannerbear is cloud-only.
- Your usage is shaped by flat-rate licensing, not per-render quotas — different pricing models fit different workloads; this isn't about "cheaper," it's about predictability at your scale.
How Bannerbear and Polotno actually differ
The two products overlap in output (PNG, JPG, MP4) and rendering speed, but the underlying architecture is different in five ways that matter for the decision.
1. Who uses the editor
Bannerbear has a hosted template builder, but it's for your team — you log in, design templates, then expose them to your code via the API. Your end-users never see a canvas.
Polotno SDK is the opposite. The editor is a JavaScript component you mount inside your own application, and your users open it directly. They drag, type, upload, position. Templates can be created by them and saved to your own backend.
Why it matters: if your product needs end-user design as a feature, Bannerbear stops where Polotno starts. Building Bannerbear plus your own editor on top is a multi-month engineering project that arrives at what Polotno ships out of the box.
2. One schema, or two worlds
Bannerbear keeps templates in their hosted account. The API exposes "modifications" — a flat parameter map that swaps text or image URLs into pre-built slots. Editing the template structure itself happens in their dashboard.
Polotno uses a single JSON schema for both editing and rendering. The same file describes a template a user just edited in the browser AND drives a programmatic Cloud Render call seconds later. Templates are files you store, version, diff, and migrate.
Why it matters: when programmatic generation and user-edited variants share one data model, you don't write translation layers, you don't sync state across two systems, and your templates aren't trapped in a vendor account.
3. Where rendering happens
Bannerbear renders on its managed cloud. That's the only mode.
Polotno SDK renders in three places: in the browser using the user's device (zero backend needed), on your own servers (full data control, predictable cost at scale), or via Polotno Cloud Render API (managed, with webhook callbacks for completed jobs, like Bannerbear).
Why it matters: privacy posture, latency, and per-render cost are choices, not defaults. A SaaS handling regulated data can self-host. A consumer app can render in the browser for instant export. A high-volume backend can use Cloud Render. The schema and API surface stay identical across all three.
4. What "media" means
Bannerbear is image-first. Video was added later and works for templated overlays and basic compositions, but the product's center of gravity is image generation.
Polotno treats image, video, and PDF as equivalent first-class citizens. The same schema models all three; the same editor renders all three; the same Cloud Render API outputs all three.
Why it matters: if you need both, one integration covers both, and you don't run into "we'll handle that later" when a feature crosses formats.
5. The embed model
Bannerbear's mental model: outsource generation to a service. Your product calls Bannerbear, gets back a URL, displays the asset.
Polotno's mental model: own the design surface. Your product contains the editor and the rendering, with Polotno as the layer underneath.
Why it matters: this affects branding (Polotno embeds white-label inside your UI; Bannerbear-rendered assets sit alongside your product), data residency (Polotno can run entirely on your infrastructure; Bannerbear cannot), and product velocity (Polotno gives you primitives, so feature work is yours; Bannerbear gives you a service, so feature work is theirs).
What people are building with each
Concrete scenarios are usually clearer than feature lists. A few:
- Generating Instagram cards for a marketing team's weekly campaign feed — Bannerbear (or APITemplate). Marketing builds the template, the agency's automation fires it from a Google Sheet. No user design, no editor needed.
- Adding "design your social card" to a SaaS product — Polotno. Customers open the editor, design from your branded templates, hit publish. The whole point is user-side creation.
- Producing 10,000 personalized email-banner variants every night from a CSV — either fits. Bannerbear is the more turnkey path if you don't need an editor. Polotno fits if you want the same render pipeline to also serve a future "let users customize their own variant" feature without a re-platform.
- Building a print-on-demand storefront where customers personalize products — Polotno. The customer designing a mug, t-shirt, or poster is the entire user experience.
- Embedding a creative tool inside an enterprise marketing platform with self-hosting requirements — Polotno. Bannerbear's cloud-only model is incompatible with the data-residency rules these platforms commit to.
When Bannerbear is the right call
Honestly: more often than this page might suggest.
If your product doesn't need an editor for end-users — if your team designs templates and your code triggers renders — Bannerbear is a more turnkey choice for that workflow. It's been doing it for years, the dashboard is friendlier for non-engineers, and the marketplace of Zapier / Make.com / Airtable connectors is broader than ours. For a marketing-ops team automating social images out of a CRM, the right answer is usually Bannerbear.
The point of departure is when you realize you need your customers to do the designing. There's no path forward for that on Bannerbear without writing an editor yourself, and editors are hard. That's where Polotno fits, and it's the only place we'd argue we belong.
Architecture and integration deep dive
Polotno SDK runs in the browser via a JavaScript editor and embeds directly into your product. You wire in your authentication, asset libraries, and business logic; the editor becomes a component in your application, not a separate hosted destination. Rendering paths are interchangeable — in-browser for instant feedback, self-hosted for privacy and throughput, or cloud for scale — all using the same schema. Setup details are on Request API key; cloud details are on Cloud Render.
Bannerbear integrates by REST and official client libraries. Templates live in your Bannerbear project, and the service returns URLs for finished assets or writes to connected storage. There is no JavaScript editor to embed in your application.
Automation and templating
Polotno SDK stores projects as JSON. You generate designs from code, map variables from your data, integrate AI systems for captions or asset selection, and render locally, on your servers, or via the Cloud Render API. The same schema drives manual editing in the browser and batch generation from a backend job. For element-level control, see the video element schema; the image element and text element follow the same model.
Bannerbear automates by applying modifications to hosted templates and rendering on its side. The structure of a template — what slots exist and how they're laid out — is fixed when you design it; runtime data fills the slots.
Rendering and export
Polotno SDK exports to PNG, JPEG, PDF, PPTX, GIF, and MP4 across client-side, self-hosted, and Cloud Render API; see import and export docs for details. The Cloud Render API supports webhook callbacks for asynchronous job completion, mirroring Bannerbear's webhook pattern.
Bannerbear renders on its managed backend. Workloads are governed by plan credits; when credits are exhausted, generation pauses until upgrade or reset.
FAQ
Does Polotno have webhooks like Bannerbear?
Yes. The Cloud Render API accepts a webhook URL on each render request and POSTs the full job payload to that URL when rendering completes. Behavior is functionally equivalent to Bannerbear's webhook flow.
Can I migrate Bannerbear templates to Polotno?
Templates don't transfer automatically — Bannerbear stores its templates in a proprietary internal format, and Polotno uses an open JSON schema. The remap is mechanical for most templates: text slots become text elements, image slots become image elements, layout positions translate cleanly. We'd recommend rebuilding templates rather than scripting a converter unless your library is large.
How does Polotno compare on Zapier and no-code workflows?
Bannerbear has invested in being a first-class citizen of the Zapier / Make.com / Airtable ecosystem; Polotno hasn't. We're an SDK and API for engineering teams, not a no-code product for marketing-ops users. If your workflow lives in Zapier and a render is one step in a larger automation, Bannerbear is a better fit than Polotno today. If your workflow is "our backend triggers a render via API," the gap doesn't matter — Polotno's REST API is straightforward to call from any job runner or workflow tool.
Does Polotno support AI image generation in templates like Bannerbear?
Polotno includes AI image background removal and AI text generation built into the editor. For AI image generation (text-to-image), Polotno integrates cleanly with external AI providers (OpenAI, Replicate, Stability) — you call the model, then pass the resulting image URL into the template schema. Bannerbear has a similar pattern via its AI image feature.
Can I self-host Polotno but not Bannerbear?
Correct. Polotno offers self-hosted editing and rendering on every plan, with full source-code access available at the enterprise tier. Bannerbear is cloud-only — there is no self-hosted offering.
Is Polotno free for small projects?
Polotno provides a 60-day development license with no payment required, suitable for evaluation, prototyping, and dev-environment work. Production use requires a paid plan. Bannerbear's free tier (a small number of renders per month, ongoing) is structured differently and is genuinely useful for hobby-scale or very low-volume production. If you're at hobby scale with no plans to grow into per-user editing, Bannerbear's free tier is the more economical option.
