How to choose a design editor SDK: a decision framework

Disclosure and scope. We build Polotno SDK, one of the options this page discusses. So this page does not rank anything and does not tell you which product is best. We are not a neutral party and cannot honestly pretend otherwise. What we can offer is the decision structure: the questions that eliminate options, and where Polotno gets eliminated by them. For any vendor's current pricing and capabilities, we link to their own pages rather than restating figures that go stale.

Most "best design editor SDK" lists are written by vendors, ourselves included. They are worth reading, but a ranking from an interested party is not what makes this decision. The requirements do.

In practice six questions eliminate almost everything. Work through them in order and you usually finish with two candidates, sometimes one.

Question 0: should you buy at all?

Before comparing products, decide whether you are buying an editor or building one.

Build on a canvas library – Fabric.js, Konva – when the editor is the product, when your interaction model is unusual, or when you have front-end capacity measured in months. These libraries give you a scene graph, transforms, hit detection, and serialization.

They also give you the basics of text, cropping, and image export. They do not give you editor-grade text layout, font loading and fallback, undo/redo, a layers UI, templates, print-quality PDF, or a side panel. That list is where the time goes, and almost none of it differentiates your product.

A useful test: write down the five editor behaviors your users would complain about if they were missing. If four are table stakes that every editor already has, buy.

Full disclosure on Konva: Polotno renders through Konva and shares its author, Anton Lavrenov. So "use Konva directly" versus "buy Polotno" comes down to whether you build the editor layer yourself, including print PDF and video export.

Question 1: do you need a native SDK, or will a WebView do?

"Do you need mobile?" is the question most comparison articles ask, and it is the wrong one: almost every option can reach a phone somehow. The question that separates products is how.

Native SDKs per platform. The editor ships as a Swift/Kotlin library, rendering with native UI. IMG.LY's CE.SDK is the main option here, covering web, iOS, Android, and desktop from one vendor. Choose this if you need native performance on older hardware or deep OS integration. Offline takes planning here too: check the terms, because IMG.LY reserves fully air-gapped deployment for Enterprise licenses.

Web editor inside a WebView. The editor is a web app your native shell hosts, with a message bridge for passing designs back and forth. This is how Polotno reaches mobile: we document iOS, Android, React Native, and Flutter integrations, each with a demo project, and the same approach works in Capacitor. The editor adapts to touch, and on desktop it runs in Electron with no bridge to build. Customers ship this in production today.

The WebView route is a real trade-off, not a free lunch:

You build and maintain the bridge between native and web.
Memory matters. High-resolution export on an older device needs testing, and often server-side rendering instead.
Stock photos, templates, and fonts call external APIs, so the device needs a network, unless you take the enterprise option that bundles assets for full offline use.

How to decide: if a WebView is acceptable in your product, this question eliminates nothing and you should move on to Question 2. If you need a native editor, it eliminates most of the market including Polotno.

Question 2: where must the design data live?

Three models, and the answer is usually dictated by your compliance posture rather than your preference.

Runs on your infrastructure. The editor is a library in your app; designs never leave your systems. Some regulated data requires it, and it is often the deciding factor in enterprise reviews.
Vendor-hosted. The vendor operates the editor and stores designs. Less to run, more to review.
Inside another product's ecosystem. The Canva Developers SDK, which unifies Canva's Apps SDK and Connect APIs, puts the editing inside Canva. Your users get Canva's template library and stock content, which is a real advantage, but the experience carries Canva's branding and depends on your users having Canva accounts. It is not white-label.

Polotno sits in the first group and also offers an optional hosted rendering service, so it can straddle the first two. The editor runs on your side. Design content reaches Polotno servers only if you use Cloud Render or AI features. License checks and the default asset panels carry no design content. If you want a vendor to operate the whole editor for you, look at the vendor-hosted options instead, such as Design Huddle or Placid's Editor SDK.

Question 3: interactive editing, automated generation, or both?

These are different products that look similar in a feature table.

Interactive only: users design things by hand. Any editor SDK does this.
Automated only: you generate thousands of images from templates via API and no human touches a canvas. A render API fits this better than an editor SDK. Bannerbear, Placid, Robolly, and Switchboard Canvas all do this job.
Both: users design the template, then your system generates variants from it. This is the case that needs an editor SDK your code can drive, because your code has to read and rewrite designs a human made.

Some render APIs reach the third group too. Placid sells an Editor SDK that embeds its hosted template editor in your app, which makes it a vendor-hosted option under Question 2.

If you are in the third group, the question to ask every vendor is: is the design format documented, and can I construct a valid design from scratch in code? Some products expose a schema you can generate. Others only support substituting values into templates their editor produced. Both are legitimate; they are not interchangeable.

Question 4: how much template governance do you need?

If a hundred franchisees edit brand assets, you need locked layers, restricted fonts, approval flows, and brand enforcement. Polotno ships the building blocks: per-element locks on moving, resizing, deleting, content and style, admin, user and viewer roles, a font allowlist, and a brand kit panel. You write the validation rules and the approval workflow yourself. Design Huddle is built around governance and packages that workflow for you, so if you want it finished rather than built, it is ahead of us. Customer's Canvas offers template rules that lock elements and set limits for print products.

If your users are designing their own things and there is no brand to protect, this whole dimension disappears and you should ignore it.

If several people must edit one design at the same moment, check that separately. Polotno's editor is single-user by design. A documented demo syncs edits between users, and you run the sync layer.

Question 5: what has to come out the other end?

Export is where projects discover a problem late. Check the specific format before you commit, not the category.

Screen images: PNG and JPEG are universal. WebP varies, and Polotno does not list it as an export format.
Print: PDF is not one format. Ask about vector versus raster output, bleed, crop marks, PDF/X-1a and PDF/X-4, ICC output intent, CMYK, and spot color. A tool that exports "PDF" may still be unusable by your printer.
Video (MP4, GIF): supported by some, absent in others.
Editable handoff (PPTX, SVG, HTML): needed when the output continues its life in another tool.

For reference, Polotno SDK exports PNG, JPEG, PDF (vector and raster), SVG, HTML, PPTX, GIF, and MP4 in the browser or on your own servers. The Cloud Render API outputs PNG, JPEG, PDF, PPTX, GIF, and MP4. The details are in import and export.

Question 6: can you run a procurement cycle?

A practical constraint that is often decisive and rarely discussed.

Some vendors in this category publish prices; others quote against scope. Quote-based pricing tends to signal an enterprise motion: deeper support, longer sales cycle, and a real negotiation. Published pricing lets you start this week without a call.

Polotno is in the quote group: every license is a fixed fee by custom quote, priced on scope and volume. The 30-day free trial needs no call and no credit card, so you can build first, but you will talk to us before you launch.

Neither model is better. But if you have six weeks and no procurement budget, that eliminates half the market regardless of features, and it may eliminate us.

Verify the facts yourself

Prices and capabilities in this category change several times a year. Rather than restate numbers that will quietly become wrong, here is where each vendor documents its own:

Vendor	Their pricing	Their docs
IMG.LY CE.SDK	Pricing	Docs
Design Huddle	Website	Docs
Customer's Canvas	Website	Docs
Placid	Pricing	Docs
Templated	Pricing	Docs
Orshot	Website	Docs
Canva	Free to develop against	Docs
Fabric.js	Free, MIT	Docs
Konva	Free, MIT	Docs
Polotno	Fixed fee by custom quote, Cloud Render billed per use	Docs

Worked example

"We are a B2B print shop. Customers personalize products in the browser. We generate the print file automatically after checkout. EU customer data."

Q0: editor is a feature, not the product → buy.
Q1: browser-based purchase flow, no native app → nothing eliminated.
Q2: EU data residency → vendor-hosted needs a DPA review; runs-on-your-infrastructure is simpler.
Q3: both: customers edit, the system renders → needs server-side rendering of designs a person edited.
Q4: moderate: templates are locked, customers change text and images.
Q5: PDF with bleed, crop marks, and CMYK. This is the real constraint. Many otherwise-suitable tools fail here.
Q6: no enterprise procurement → published pricing or a light quote process. Polotno is quote-based, so it needs a conversation before launch, though the trial does not.

Q5 and Q2 do the work. Q1, which most comparison articles lead with, decides nothing.

Head-to-head detail

If you have narrowed to a shortlist, we maintain direct comparisons. They are written by us, with the same conflict of interest declared above:

For the build-versus-buy math in more depth, see build vs buy. If you are comparing against Canva as a product rather than as a platform, Canva alternatives covers that.

We build Polotno SDK, so read this as a vendor’s view. We last checked the claims about other products against their public docs on Nov 4, 2026. Spot an error? Email team@polotno.com and we will correct it.