Website preset

What the platform does with the file

• It reads the file with the same rules as the page editor, Look and feel and Homepage. Anything it would drop (an unknown block, a field outside the description, an unsafe link, an invalid colour) is listed for you one by one before you apply it.
• Pages are created as drafts, and you review them before they go live. An existing page is overwritten only if you explicitly choose to.
• The file does not carry images, only their addresses. The target store downloads them into its media library and accepts JPEG, PNG, GIF, WebP and AVIF. An address starting with a slash is combined with the zdroj field.
• Homepage categories and products are referenced by slug, not by id: an id from one store is meaningless in another.
• A newer format version than the platform knows is rejected as a whole.

Limits

File size

2 MB

Pages per file

300

Blocks per page

200

Images per use

80

From the platform code. This list is built directly from the platform source code, and every deployment checks that the two still match.

File fields

Field	What it holds
druh	File marker, always portican-predvolba. It tells the platform this is not just any JSON.
verzia	Format version, currently 2.
nazov	The name the agency gave the preset.
vytvorene	When the preset was created, in ISO 8601. For humans only.
zdroj	The address of the website the preset came from. Image addresses starting with a slash are built from it.
tema	The website theme; fields below. Optional.
stranky	The list of pages; fields below.
uvodnaStrana	The store homepage; fields below. Optional.
eshop	The store layout from a template: homepage banner, columns on a phone, categories and product card, each option from a closed list. May be missing; version 1 has none.

Page fields

Field	What it holds
slug	The page address. Empty means the website homepage.
jazyk	Language code of the page, for example sk, cs, en.
adresa	The address in the page's language, when it differs from the slug.
nazov	Page name in the menu.
seoTitulok	Title for search engines.
seoPopis	Description for search engines.
poradieVMenu	Position in the website menu. Without a number the page stays out of the menu.
bloky	Page blocks in the order they appear. Kinds and fields are covered in Blocks and fields.

Theme fields

Field	What it holds
light	Theme colours as #rrggbb: background, foreground, primary, primaryForeground, accent, accentForeground, mutedForeground, surface, line, brand2, brand3.
radius	Corner radius in rem, for example 0.75rem.
tmavyRezim	Whether the store offers a dark mode switch (true or false).
font	Body font: Geist, Jost, Inter, Lora, Playfair Display, Old Standard TT, Space Grotesk, Bodoni Moda, Archivo, system-ui, Faustina, DM Sans, Montserrat, Work Sans, Manrope, Nunito Sans, Cormorant Garamond, Source Serif 4, Libre Baskerville, Merriweather.
pismo	Script font: Allura, Kaushan Script.
sablona	Template: zaklad, expert.
styl	Style of the Expert template: vyrazny, triezvy, redakcny, produktovy, teply.
fontNadpisov	Heading font, from the same list as the body font.
znacka	Text wordmark instead of a logo: up to 40 characters plus an optional script addition.
logo	Logo address.
logoWidth	Logo width in pixels.
logoHeight	Logo height in pixels.
titulnaFotka	Hero photo address.
popisZnacky	Short brand tagline, up to 40 characters.

Store homepage fields

Field	What it holds
pas	Texts of the banner at the top of the homepage.
sekcie	Homepage sections in order, always all of them.
dlazdice	Category tiles; the category is a slug.
pocetKategorii	How many categories to show when they are picked automatically.
pasy	Product strips; both the collection and the products are slugs.
pocetProduktov	How many products one strip holds.
vyhody	Store benefits below the banner.

Example

The smallest useful preset: a theme and one page with two blocks. The platform reads all of it without a single finding; every deployment checks that.

{
  "druh": "portican-predvolba",
  "verzia": 1,
  "nazov": "Florist, simple website",
  "vytvorene": "2026-09-29T10:00:00Z",
  "zdroj": "https://example.com",
  "tema": {
    "light": {
      "primary": "#0f5c4a",
      "primaryForeground": "#ffffff"
    },
    "radius": "0.75rem",
    "font": "Inter",
    "sablona": "expert",
    "styl": "teply"
  },
  "stranky": [
    {
      "slug": "",
      "jazyk": "en",
      "nazov": "Home",
      "poradieVMenu": 1,
      "bloky": [
        {
          "id": "uvod",
          "druh": "hlavicka",
          "obsah": {
            "nadpis": "Flowers for every day",
            "text": "We tie our bouquets in the morning and deliver them the same day.",
            "tlacidlo": "See what we offer",
            "odkaz": "/shop"
          }
        },
        {
          "id": "otazky",
          "druh": "otazky",
          "obsah": {
            "nadpis": "Frequently asked questions",
            "polozky": [
              {
                "otazka": "Do you deliver on Sundays?",
                "odpoved": "Yes, orders placed by 10:00 are delivered the same day."
              }
            ]
          }
        }
      ]
    }
  ]
}