HTML Block
Use HTML blocks when a design needs custom markup inside the editor canvas.
Add an HTML block from the left sidebar. Use the right sidebar for block properties, or double-click the block on the canvas to edit its markup inline.
Common Properties
Most blocks share a core set of properties. The right sidebar shows the properties available for the current selection, including controls added by the parent panel.
Size Control how much space the block takes up
Controls the block's horizontal space. Use a fixed value for a predictable footprint, `%` when the width should respond to the canvas or parent panel, or auto sizing when content or layout should decide the width.
Controls the block's vertical space. Height can be fixed, flexible, or constrained with minimum and maximum values when a block needs room to grow without getting too large or too small.
Keeps width and height connected so a block can scale without stretching. This is useful for images, shapes, and blocks that need to preserve a specific proportion.
Arrange Place and manage the block in its layout
Set the block's position on the canvas or inside a Free Panel. X controls horizontal placement; Y controls vertical placement. Positions can use fixed units or `%` values with anchors.
Move a block to common canvas positions, or use anchors to decide how the block lines up to a percent-based X or Y value.
Rotate the block or flip it horizontally or vertically without changing the block's content.
Lock a block to avoid accidental edits, or move it forward and backward when blocks overlap.
Background Style the surface behind the block’s content
Assign a single color as the background of the block.
- Color
Use a linear, radial, or conic gradient. Gradients are built from stops, and each stop has a color and a position. Stops are ordered by position, so moving a stop changes how the colors blend across the block.
- Stop colors
- Stop positions
Choose a pattern, then customize the colors it exposes. Some patterns also include a size control. Different patterns use different numbers of colors, so the available controls change after you choose a pattern.
- Pattern colors
- Pattern size
Canvas backgrounds
Canvas and block backgrounds are separate. A transparent block can show the canvas background or the parent panel behind it.
Border Define the block’s edge and corners
Border controls are split into simple and advanced modes.
Use simple border controls when the same color, thickness, line style, and corner radius should apply everywhere.
Open Advanced Border to edit sides and corners separately. Sides can have their own color, thickness, and line style. Corners can have their own radius.
Shadow Layer shadows to add depth to your blocks
Shadows can be layered. Use a regular shadow for depth, an inner shadow for inset effects, or a glow when the shadow should spread evenly around the block.
Block Specific Properties
Padding Space between the block edge and the HTML content
Padding creates space inside the block’s edge before content is laid out.
Use one value when every side should have the same inset.
Open Advanced Padding to set top, right, bottom, and left independently.
Text color Default text color inside the block Preview Notes
HTML blocks are previewed in an iframe while you work in the editor. That keeps custom markup isolated from the editor UI, but it can make some preview behavior look slightly different from the exported HTML.
If something looks off in the editor preview, use the HTML/export button in the top toolbar to inspect the generated HTML.
Templated Content
HTML blocks can use Handlebars-style placeholders inside their markup.
Many properties can use Variables to assign their value when each image is created.
Variables can be required, ignored, or given a fallback value. When you render the template, pass values with template_values.