What a swap costs on Linea
Gas is paid in ETH and is low. Proving costs are real but amortised across everyone in a batch, so per-transaction cost falls as the chain gets busier — the opposite of the relationship most users expect.
Every swap has three separate recipients and FBT Swap is only one of them. Network gas is paid in ETH and goes to the chain itself. The pool fee sits inside the price you are quoted and goes to liquidity providers. The platform fee is 0.70% of the input. None of the three is taken out of another, and none of them changes after you sign.
Getting assets onto Linea
The official bridge from Ethereum is the main route in, and exchange support has grown steadily. Outbound finalisation depends on proof generation rather than a fixed dispute period, so the wait is shorter but not instant.
Before moving a large amount, send a small test transfer and confirm it arrived on lineascan.build. FBT Swap is non-custodial and cannot reverse, freeze or compensate a transfer sent on the wrong network — it never holds the funds, so there is nothing for it to return.
What to check before you sign
This is a younger chain with thinner pools than Arbitrum or Base. The same order that barely moves the price on a major L2 can take meaningful price impact here, so check the quoted impact rather than assuming the rate.
Check three things every time: the network name your wallet is showing and chain ID 59144, the contract address of the token you are receiving, and the size of the approval you are granting. An unlimited approval stays live until you revoke it — it is a separate signature from the swap and deserves separate attention.
What this page does not promise
The rate you see is the best route among the venues queried at that moment, which is not the same as the best price available anywhere. Routing through an aggregator reduces exposure to sandwich attacks but does not make a public transaction immune to them, and FBT Swap does not forecast prices or recommend trades.
FBT Swap cannot audit token contracts you import yourself, cannot restore a lost recovery phrase and cannot reverse a confirmed transaction. The only official domain is fbtswap.ir and the only contact address is fbtswap@gmail.com; we never contact users first.