Shopify Canvas lets eligible merchants ask Sidekick to create or change an online store theme, then review the result across the store’s templates. The Oct. 1, 2026 launch is in early access, and the feature is limited to desktop, eligible plans and Shopify-developed or custom themes. This documentation-based guide shows how to create a separate draft theme in Canvas and keep it unpublished while you inspect it.

The big change

  • What changed: Shopify brought Sidekick’s theme-file editing into a visual workspace that lays out store templates together and renders the working theme as it changes.
  • Why it matters: A merchant can ask for a theme direction, then inspect the result across templates and screen widths before deciding whether to publish.
  • What to watch: Early access excludes third-party Theme Store themes, app blocks and embeds, Markets, translations and theme updates. Shopify has not published a Canvas-specific price or independent evidence for its “twenty minutes” store-building claim.

This guide is for a Shopify merchant or staff member who wants to explore a new storefront design while keeping changes away from customers. The steps below come from Shopify’s live Help Center, checked Oct. 2, 2026. BIG CHANGE did not access Canvas or test the workflow.

Check access before you start

Canvas is still in early access and is available only to certain stores. Shopify’s requirements page, checked Oct. 2, says the store must be on a plan that includes theme customization, Canvas must be opened on a desktop device, and the staff account needs the Online store > Themes > Edit code permission. Canvas supports themes developed by Shopify and custom themes. Third-party themes from the Shopify Theme Store are not supported at launch.

You will need either a short description of the brand and store you want to build, or an existing supported theme to use as a starting point. Canvas creates a new theme or a separate copy. It does not edit the existing theme in place when you choose either of those starting paths.

Shopify’s launch post said Canvas would roll out to merchants over the days following Oct. 1. Its current Help Center still describes access as limited early access; the launch announcement does not promise that every store has received access. No separate Canvas fee is listed. The documented plan requirement is access to theme customization, so check your store’s plan before attempting the steps.

Create a new theme and leave it unpublished

  1. In Shopify admin on a desktop, open Online Store and choose New. The Canvas Help Center describes this route for creating a theme.
  2. In the Sidekick chat, describe your brand and the store you want to build. Shopify says Sidekick uses that description to build a theme and open it in Canvas.
  3. Wait for the theme to appear in the Canvas workspace. Shopify says the new theme is added to your theme library as an unpublished theme. Keep working on this copy while you review it.
  4. In the workspace overview, move across the templates and open the pages you need to inspect. Shopify’s Canvas navigation guide says you can open a template, use the full-screen preview, and select a product, collection or page variant where available.
  5. Ask Sidekick for a specific change, or select a block and change its settings or text. Shopify says changes are saved automatically. On an unpublished theme, they appear in Canvas and its preview; customers cannot see them because this is not the published theme.
  6. Before deciding to publish, inspect the relevant templates and preview widths. Shopify’s navigation guide supports device-width presets including desktop, tablet and mobile. Check that the page you care about behaves as expected at each width. Canvas’s overview is desktop-only; these preview widths let you inspect responsive output inside the desktop workspace.

A draft copy is useful when you want to try changes to a supported existing theme. In Online Store, open the theme’s actions menu and choose Duplicate in Canvas. Shopify says the original remains in the theme library and the copy opens in Canvas. The two themes are separate: later changes to one do not appear in the other. Before publishing, verify that the copy you intend to use contains the latest changes.

Know exactly what makes a change live

For a new or duplicated unpublished theme, changes are saved to that theme but remain out of public view until you publish it. Shopify’s publishing instructions say to click Publish, review the changes in the confirmation dialog, then click Publish changes. That final confirmation makes the theme live on the online store. Do not choose it while your goal is only to preview.

If you edit the currently published theme in Canvas, the behavior is different: changes save in Canvas, while customers continue to see the prior published version. Shopify says you must choose Update, review the changes, and then Publish changes to make them visible. If you want a lower-risk review path, work in the separate unpublished theme instead.

You can consider review complete when your intended theme appears as unpublished in the theme library, the preview shows the templates and product variations you meant to inspect, and you have not confirmed Publish changes. Shopify says an unpublished theme can be previewed without customers seeing it. Its general theme-preview documentation also describes sharing a preview link with others; visitor links are visible to anyone who has the URL and expire after two days, so share them accordingly.

Limits to account for

Shopify’s launch version does not cover every theme workflow. Its requirements page says you cannot translate theme content directly in Canvas; use its Translate & Adapt app instead. You cannot add a new block to a template manually inside Canvas, although Shopify says you can ask Sidekick to add one. Canvas cannot add or configure app blocks or app embeds, and it cannot customize a theme for different Markets. Shopify’s launch changelog also lists Markets, rollouts, translations and app blocks or embeds among launch exclusions.

Themes edited in Canvas do not receive theme updates, and Shopify’s requirements page says you cannot download their files. Merchants who rely on a third-party Theme Store theme, app extensions, localized theme content, Markets or theme updates should account for those unsupported workflows before choosing Canvas for the theme.

Shopify also notes that direct text editing in the preview is unavailable on some older themes. After Sidekick makes a change, its undo history is cleared; Shopify says you can ask Sidekick to change it back or restore an earlier version through theme history. Review the version and preview before restoring, and keep the theme unpublished until you are satisfied.

What Shopify has and has not established

Shopify announced Canvas on Oct. 1 as a workspace where Sidekick can make coordinated theme-file changes while merchants see templates together. The company says Sidekick validates code and inspects screenshots as it iterates. In its Oct. 1 launch post, Shopify executive Ben Sehl said a merchant could make a fully custom store in twenty minutes. That statement comes from Shopify; the launch material does not provide a reproducible timing study, error rate, accessibility evaluation, conversion result or independent comparison.

TechCrunch independent report independently places Canvas against Shopify's earlier section-and-block theme editor and notes that deeper customization generally required code or a developer. It reports the same launch exclusions and desktop limitation. This is launch coverage, not an independent performance evaluation.

Sources & further reading