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The Portal Creator’s central preview displays your portal with several clickable circles overlaid on it. Each circle opens a dedicated configuration menu for that part of the portal. You can edit the frame block, the inside block, the lighter item, and the particle effect — all without writing any YAML.
1

Open the Portal Creator

Navigate to https://astaspasta.alwaysdata.net/ in your browser. The portal preview loads automatically in the center of the screen.
2

Configure the frame block

Click the circle in the top-left area of the portal to open the frame block menu.Inside this menu you can:
  • Set the accepted block face — Restrict the frame to only accept a block placed along a specific axis. For example, you can require an acacia log placed along the Y axis.
  • Set the minimum portal size — Enter the minimum width and minimum height (in blocks) the portal frame must be.
  • Set the maximum portal size — Enter the maximum width and maximum height the portal frame can be.
  • Choose a block — Select a block from the list, or type a block name manually into the input field.
If you type a block name that the editor doesn’t recognise, it will display a placeholder image in the preview. The block name you entered still works correctly in-game — this is a display limitation of the editor only.
3

Configure the inside block and lighter

Click the circle in the center of the portal to configure the inside block, or click the lighter circle to configure the lighter material.Both menus show a small box listing available blocks and items. Select one from the list, or type a name manually to use a block or item that isn’t listed.
4

Configure particles

Click the particle element on the portal preview to open the particle settings box.From here you can:
  • Enable or disable particles — Toggle whether the portal displays ambient particles at all.
  • Change the particle color — Use the color picker to choose any color for the portal’s particles.
Work through the frame block settings first (size constraints and block face), then move on to the inside block and lighter. Particles are purely cosmetic, so you can adjust those last.