How to change default trade options

When swapping on the Uniswap interface you can adjust the default trade options, which determine the liquidity pools your swap is routed through.

When default trade options are turned on, Uniswap will select the most efficient trade route considering price, liquidity, and network costs.

You can also turn default trade options off to select a specific trade route option.

The available trade route options are:

Default trade: Selecting this allows Uniswap to find the best route for your swap. This option uses UniswapX when eligible, as well as liquidity from Uniswap v2, v3, and v4 pools. Since some v4 pools may have hooks that can change how a swap is executed in that pool (e.g., a hook providing limit order functionality), v4 pools with such hooks are excluded. V4 pools with custom fee tiers are also excluded. (Learn more about custom hooks here.)
UniswapX: Selecting this allows swaps to be routed through UniswapX when eligible. This option is only available on the Uniswap Web app.
v4 pools: Selecting this will force your swap to only use Uniswap v4 liquidity pools for the swap route. Since some v4 pools may have hooks that can change how a swap is executed in that pool (e.g., a hook providing limit order functionality), v4 pools with such hooks are excluded. V4 pools with custom fee tiers are also excluded.
v3 pools: Selecting this will force your swap to only use Uniswap v3 liquidity pools for the swap route.
v2 pools: Selecting this will force your swap to only use Uniswap v2 liquidity pools for the swap route.