Design on the canvas.
Edit the source.

Canvas and source editing share one template model. Use visual controls for layout work, then open HTML and CSS when the change is easier to express in code.

Free account, no credit card

See how one element appears in both views

Select any element to adjust its layout visually, or inspect the underlying source code in real time. Changes in either view sync directly to the same template.

One template model
Canvas
#total
Source representation
<div id="logo"
     style="left:6%; top:10%; text-align:left">
  Acme Co.
</div>
<div id="invoice-no"
     style="left:62%; top:10%; text-align:right">
  {{ invoice.number }}
</div>
<div id="bill-to"
     style="left:6%; top:34%; text-align:left">
  {{ customer.name }}
</div>
<div id="due"
     style="left:62%; top:34%; text-align:right">
  {{ invoice.dueDate }}
</div>
<div id="total"
     style="left:62%; top:68%; text-align:right">
  {{ invoice.total }}
</div>

The selected canvas element and source representation share this stable identifier. Both controls update the same template model. Bound to invoice.total.

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Choose the view that fits the change

1

Start from source or a blank canvas

Paste HTML, upload HTML with its CSS and assets, submit supported source through the API, or build a new design visually. Each path creates an editable template model.

2

Use the most direct editing view

Move and align elements on the canvas. Restructure markup or styles in source. Stable identifiers keep both views attached to the same elements.

3

Preview and render the saved model

Review the output with representative data and a named profile. Rendering uses the saved template model and explicit request options rather than a separate visual export.

Preserve what the visual model does not own

Complex templates may contain advanced CSS or custom scripts. The designer preserves unsupported markup in protected regions while keeping element IDs and revision history intact across both visual and code edits.

Stable identifiers across views

Elements and bindings retain their identifiers when edited from source or canvas. A selection, structural diff, or merge can refer to the same model object instead of trying to match two unrelated representations by appearance.

Protected regions for unsupported markup

Source outside the supported visual contract is preserved as a protected block rather than converted into controls that cannot represent it. The canvas exposes the boundary and allows edits around the region.

A versioned visual-support contract

Supported HTML elements, attributes, CSS selectors, and properties are defined by a versioned contract. Check that contract before expecting a source construct to appear as an editable canvas control.

Authored and computed styles together

Inspect the declared style beside the value that applies after variables, inheritance, and specificity. This makes it possible to distinguish an incorrect rule from one that was overridden elsewhere.

Unsafe executable input constrained

Import validation rejects or isolates scripts, event handlers, unsafe URLs, and remote imports according to the authoring contract. Pasted markup does not receive unrestricted execution simply because it entered through the source editor.

Revisions that preserve the change trail

Name and publish revisions, compare their model or rendered output, and restore an earlier state by creating a new revision. The history retains both the intervening work and the later restoration.

Define several outputs without copying the base design

Add named output profiles to a base design. Each profile can override visibility, crop, dimensions, quality, background, format, or delivery while leaving the shared content and structure in one place. Use separate designs when the outputs do not share that structure.

Base design Contract PDF · A4 · 12 pages Summary PNG · 1200 × 630 Social WebP · 1080 square
Print profile: full page, margins, print colors.
Card profile: cropped, the total promoted, no footer.
Social profile: square, background swapped, WebP.

The application, API, and renderer refer to the same saved profile identifier. A scheduled job still needs to select the intended profile and supply the data required by the template.

Turn existing material into an editable starting point

Reconstruct an existing PDF

Import detected structure and content into the editable model instead of treating every page as one flat image. Review ambiguous regions in the correction workflow and compare the result with the source before publishing it.

Adopt a reachable web page

Capture a reachable page and reconstruct supported content as an editable design. Review the adopted result. Script-driven behavior and source rules outside the visual contract may not become canvas controls.

Bind collected fields to the layout

Connect form fields to existing design elements or create an element from a field. Store the relevant submission and schema version with the document workflow so later regeneration can use the intended binding contract.

Preview content that can stress the design

Render bindings with representative names, paragraphs, table rows, images, and missing optional values. A short placeholder cannot reveal overflow, pagination, or empty-state problems.

Use editing controls that preserve intent as content changes

Our visual designer provides full control over layout, layer structure, data bindings, multi-page organization, and version history. Everything is built so your design stays pixel-perfect even when incoming data lengths vary.

  • Undo and redo across change types. Reverse property, structure, page, binding, and destructive changes, not only canvas movement.
  • Select, group, lock, and order layers. Protect completed regions while changing related elements as a set.
  • Align with guides, grids, snapping, and exact movement. Use repeatable geometry rather than relying only on a drag that looks close at one zoom level.
  • Create and manage multiple pages. Reorder, duplicate, delete, and configure pages where the document structure is authored.
  • Bind tables and repeated rows. Let line items grow from input data while keeping headers, columns, totals, and page behavior in the template.
  • Place images, SVG, QR codes, barcodes, and shapes. Keep generated and scannable elements inside the document layout and bind their changing values where needed.
  • Preview screen, print, responsive, and paged output. Check the design in the presentation mode and dimensions its recipient will receive.
  • Show autosave state. Make pending, saved, failed, and conflicting changes visible before the editor is closed.

Test the template with data that can break the layout

A clean canvas filled with short placeholders proves very little. Preview the document with the longest values, largest row sets, missing optional fields, and image shapes the real workflow will supply. Keep those cases available when the template changes.

Use long and multilingual text

Replace short sample names and headings with realistic upper bounds. Check wrapping, truncation, direction, font coverage, and the page break that follows. Text length can change the document even when every style value stays the same.

Vary repeating data

Preview zero, one, and many table rows. Confirm how headers repeat, totals stay with the intended group, and content continues across pages. A line-item design should define its empty and overflow behavior before the first production batch.

Exercise optional content

Remove optional values and verify whether the element hides, shows a default, or leaves deliberate space. Put that rule in the template or binding contract instead of relying on every calling workflow to make the same decision.

Review each output profile

A profile can change dimensions, visibility, crop, format, and background. Preview the stress cases under every profile you publish; a base design that fits A4 may still fail when cropped into a card or rendered with a different image ratio.

Separate editing authority from publishing authority

Copy, brand, layout, integration, and approval may belong to different people. Roles, revision conflicts, and audit events let them work on one template without granting every participant every destructive action.

Permissions by operation

Control view, edit, publish, restore, export, and delete separately. A copy editor can correct text without receiving permission to publish or delete history.

Visible revision conflicts

Detect when another save changed the base revision and provide an explicit recovery path. Do not silently treat the last network response as the intended combined result.

Events tied to an actor and time

Record designer and revision events with the responsible identity and timestamp so a published template change can be traced beyond the visual diff alone.

Keep published output connected to a named revision

A long-lived template changes while documents continue to use it. Name the state you publish and keep the save status visible. Compare revisions before release, and restore an earlier state as new history when a later change must be undone. The record should explain both moves.

  • Autosave reports its state, including pending, successful, failed, or conflicting changes.
  • Published revisions remain identifiable. Earlier states stay in the history, and restoring one creates a later revision that records the restoration.
  • Concurrent saves use the base revision. When it changed, the editor shows a conflict instead of silently overwriting the other save.
  • Compare model and rendered changes, since a small source edit can alter line wrapping, page breaks, or visibility in the finished output.
  • Unsafe input is constrained during import. Scripts, event handlers, remote imports, and unsafe URLs do not gain unrestricted execution.
  • Unsupported visual markup has an explicit boundary. Protected regions keep source that the canvas does not own. Versioned support lists state which elements, attributes, selectors, and properties can be edited visually.

Questions about visual and source editing

Is the HTML mine, or is it generated markup I cannot read?

You can open, edit, and export the template HTML and CSS. The visual canvas and source editor operate on the same document model, so source changes are not a separate export that must be re-imported.

What happens to markup the designer does not understand?

The editor keeps unsupported markup in a protected region instead of rewriting it as visual elements. You can see the boundary, preserve the source block, and make canvas changes around it.

Can two people work on the same template?

Yes. Templates track full revision history so your team can safely collaborate. If two people edit at the same time, the editor prevents accidental overwrites, and you can review or restore previous versions at any point.

Do I have to choose between designing and coding?

No. Split view lets you work in the visual canvas and HTML source side by side with live preview. You get full visual drag-and-drop tools alongside direct code editing, data binding, and revision tracking.

Can I start from a PDF I already have?

Yes. You can import existing PDF documents to convert them into editable templates. The designer identifies text and form fields, lets you adjust any detected elements side by side with the original, and saves the layout for reuse.

How do I produce different sizes from one design?

Create named output profiles on one base design. A profile can change visibility, crop, size, quality, background, and delivery settings. The designer, API, and renderer refer to the same saved profile definition.

Does it work without a mouse?

Keyboard navigation and shortcuts cover the authoring workflow, while document structure and reading order remain properties you can inspect in the design.

Which plan includes the designer?

The designer is available on the free account along with API access and PDF and image output. Paid plans start at $9 a month for 1,000 renders when you need a larger allowance, more templates, storage, users, or concurrency.

Build the first template
in the view you prefer

Start on the canvas or from HTML, test the layout with representative data, and save a reviewed revision before rendering it.

No credit card required.