# Core options These options are the same across every DiceBear core: the JavaScript, PHP, Python, Rust, Go, and Dart libraries, and the [HTTP API](https://www.dicebear.com/how-to-use/http-api/). Only the way you pass them differs from one language to the next, so each library page shows that in its own syntax. The names, types, defaults, and behavior below do not change. They apply to every avatar style. Where the type lists `[min, max]`, you may pass either a fixed value or a two-element tuple. The PRNG samples a value from the tuple's range. | Option | Type | Default | Description | | ----------------- | ------------------------------------------------ | ------------- | ------------------------------------------------------------------------------------------------------------------------------------------ | | `seed` | `string` | `''` | Seed for deterministic generation | | `flip` | `'none' \| 'horizontal' \| 'vertical' \| 'both'` | `'none'` | Flip the avatar (accepts an array of values to randomize) | | `rotate` | `number \| [min, max]` | `0` | Rotation in degrees (−360 to 360) | | `scale` | `number \| [min, max]` | `1` | Uniform scale factor around the canvas center (0 to 10; `1` is original size) | | `borderRadius` | `number \| [min, max]` | `0` | Border radius in percent of the canvas (0 to 50; `50` makes a circle) | | `size` | `integer` | _unset_ | Output size in pixels (1 to 4096); when unset the SVG scales to its container | | `translateX` | `number \| [min, max]` | `0` | Horizontal translation in percent of the canvas width (−1000 to 1000) | | `translateY` | `number \| [min, max]` | `0` | Vertical translation in percent of the canvas height (−1000 to 1000) | | `idRandomization` | `boolean` | `false` | Suffix every SVG `id` with a random, non-deterministic value (avoids `url(#…)` collisions when several avatars share a page) | | `title` | `string` | _unset_ | Accessible title; when set, the SVG becomes `role="img"` with `