A Linea swap exchanges two assets that are already on Linea. Moving an asset from Ethereum or another chain into Linea is a bridge transaction. The two actions can appear in one cross-chain interface, but they involve different contracts, fees and checks.
This guide focuses on same-chain swaps. It explains how to verify tokens, compare liquidity routes, review gas and confirm the result without relying on a fixed price or liquidity claim.
Prepare the wallet and network
Use a compatible self-custody wallet and confirm Linea is active. Check current network and protocol information in the official Linea documentation. Keep enough of the network's supported gas asset for the transaction shown by your wallet.
Verify both token contracts through their issuers and a reputable Linea explorer. Symbols and logos can be duplicated. A token being visible in a wallet or token list does not by itself prove authenticity or sufficient liquidity.
If your funds are on another chain, use the separate bridge vs swap guide before proceeding.
Step 1: confirm the exact assets
Before entering the amount:
- verify that Linea is selected;
- verify the input token contract;
- verify the output token contract;
- confirm that the destination application supports that representation;
- open the swap interface from its official domain.
Follow the full process in how to verify a token, network and contract.
Step 2: request and read the quote
Enter the intended trade amount. Review estimated output, minimum received, price impact, route, explicit fees, gas and token approvals.
The Linea help guide to token swaps describes an aggregation flow that searches liquidity from multiple platforms. This is useful context: different interfaces can search different venues and return different paths.
Latin Link is a non-custodial liquidity aggregation interface. Its routing can consider eligible liquidity sources through OpenOcean. Aggregation expands the search, but no interface can guarantee the highest output for every pair and amount. Compare the complete result with how to compare liquidity routes.
Step 3: evaluate route quality
A direct pool is simple but may be shallow. A multihop route can pass through a more liquid token. A split route, where supported, can use several liquidity sources. Each path changes the combination of output, fees, price impact and gas.
Use the following order:
- verify the token contracts;
- compare estimated output for the same amount;
- inspect minimum received;
- check price impact;
- review every explicit fee;
- include current gas;
- understand the contracts that will receive approval.
If the route shows extreme impact or cannot produce a stable quote, do not force it by setting a very high slippage tolerance.
Step 4: separate gas, fees and slippage
| Item | What it is | What to inspect |
|---|---|---|
| Network gas | Cost to process the Linea transaction | Wallet estimate |
| Pool or protocol fee | Charge along the liquidity route | Quote disclosure |
| Interface fee | Separate interface charge, if applicable | Quote disclosure |
| Price impact | Effect of the amount on available liquidity | Route and trade size |
| Slippage tolerance | Adverse movement accepted before execution | Minimum received |
These values are not interchangeable. Read slippage, price impact and gas before changing a transaction setting.
Step 5: review the approval and final transaction
An ERC-20 swap may require an approval. Verify the token, spender and allowance. The approval is a separate on-chain action and can consume gas even if the later swap fails.
On the final wallet screen, confirm:
- Linea is the active network;
- the correct input and output contracts are displayed;
- the amount and minimum received match the quote;
- the router or spender matches the interface;
- the recipient is your wallet;
- the gas estimate is acceptable.
Reject unexplained signatures, chain switches or token transfers.
Step 6: confirm the result on-chain
Open the transaction hash in a reputable Linea explorer. Check status, transfers, contracts and recipient. If the output token does not appear automatically, verify its contract before importing it into the wallet.
A route can change between quote and execution within the parameters accepted by the transaction. Compare the final transfer with the minimum received, not only with an early headline estimate.
Liquidity and route limitations
Linea can host several DEXs and liquidity sources, but market depth is specific to each pair and amount. Token availability does not guarantee a direct pool or low price impact.
An aggregator can compare eligible venues, yet it cannot use a venue or token that is unsupported, inaccessible or illiquid at that moment. For a new token, start with a small test and verify all contracts. A test reduces operational uncertainty but does not eliminate smart-contract or market risk.
Common Linea swap mistakes
- confusing the bridge step with the swap;
- selecting a token by symbol only;
- having insufficient gas balance;
- comparing different amounts or stale quotes;
- ignoring the minimum received;
- signing an unlimited approval without reviewing the spender;
- increasing slippage to overcome missing liquidity.
Frequently asked questions
Is a Linea swap the same as moving ETH from Ethereum to Linea?
No. Moving assets between networks is a bridge operation. A same-chain swap starts and ends on Linea.
Why can two Linea interfaces show different routes?
They may query different liquidity sources, use different routing logic or apply different fees. Timing and trade size also affect the quote.
Does Latin Link guarantee the lowest cost?
No. Latin Link can compare eligible routes through its aggregation flow, but the result depends on current liquidity, fees, gas, price impact and slippage.
Does Latin Link hold my tokens?
No. It is non-custodial. The transaction is signed from the user's wallet and Latin Link does not hold private keys.
Can Latin Link cancel a confirmed transaction?
No. A confirmed blockchain transaction cannot be reversed by a non-custodial interface.