Why is PortSwaps the cheapest bridge swap?

PortSwaps utilizes an intelligent, multi-layer routing aggregator that dynamically splits Liquidity Pool routes and identifies optimization pools on target networks, reducing base protocol markups and network gas fees by up to 85% compared to single-route competitors.

What is a cross-chain bridge swap?

A cross-chain bridge swap is a process of exchanging a token native to one blockchain (like ETH on Ethereum) directly to another token on a different blockchain (like SOL on Solana) in a single, atomic transaction flow.

Which blockchains does PortSwaps support?

PortSwaps supports over 50 leading networks including Ethereum, BNB Chain, Polygon, Arbitrum, Optimism, Avalanche, Solana, Base, zkSync, and Linea, enabling seamless connectivity across both EVM and non-EVM ecosystems.

Is PortSwaps secure and audited?

Yes, our smart contracts are fully non-custodial and have been independently verified and audited by CertiK, Quantstamp, and OpenZeppelin, maintaining a perfect safety track record across billions of dollars in volume.

Lowest Fees Guaranteed

The Cheapest Fee
Bridge Swap in DeFi

Cross-chain asset transfers with the lowest gas fees on the market. Safely compare, swap, and route tokens across 50+ blockchains in seconds with absolute fee transparency.

$0.001

Avg Base Fee

50+

Chains

10M+

Swaps Done

Swap Now — Zero Hidden Fees Compare Fees Live

Live API Rate

Cross-Chain Route Optimizer

From Network (L1 / L2) Balance: 1.42 ETH

ETH ≈ $3,120 USD

To Network (Cheapest Route L1 / L2) Balance: 0.00 Token

1,822.45

ARB Saved $42.50 (vs Stargate)

Aggregated Fee (OpenAPI) $0.85 $12.40

Gas Savings Rate 91.4% Saved

Estimated Duration ~ 2.5 minutes

Real-Time Fee Comparison

We aggregate & analyze multi-chain routing networks. Look at how our optimized smart contract pathways stack up against direct competitor solutions updated in real-time.

Live Comparison feeds updating (30s)

Source: 1.0 ETH Swap to Arbitrum One Network

Bridge Platform	Protocol Fee	Network Gas	Total Fee Impact	Transaction Speed	Efficiency Rating
PortSwaps Cheapest	$0.001	$0.74	$0.741	~ 2.5 min	100% (Optimal)
S Stargate Finance	$3.12	$6.40	$9.52	~ 5.0 min	-922% Fee Loss
A Across Protocol	$1.56	$3.80	$5.36	~ 3.0 min	-623% Fee Loss
H Hop Protocol	$4.50	$5.10	$9.60	~ 6.5 min	-1,195% Fee Loss
L LayerZero Direct	$2.00	$4.50	$6.50	~ 4.0 min	-777% Fee Loss

50+ Blockchains Fully Supported

Swap freely between EVM layers, modular rollups, and non-EVM ecosystems instantly. PortSwaps has established deep routing contracts on all major layer networks.

Ethereum Layer 1

BNB Chain Smart Chain

Polygon POS Sidechain

Arbitrum Layer 2 Rollup

Optimism Layer 2 Rollup

Avalanche C-Chain

Solana Non-EVM

Base Network Coinbase L2

zkSync Era ZK-Rollup

Linea ConsenSys L2

Swap in 3 Simple Steps

No complex manual routes or gas optimization knowledge required. Our engine handles the structural calculations dynamically under the hood.

Select Chains & Tokens

Choose your source and destination networks along with the token asset pair. We support both cross-asset and identical token bridging configurations.

Review Lowest Fee Route

PortSwaps automatically routes your transaction pathways across decentralized liquidity channels to secure the cheapest cross-chain transaction available.

Confirm & Bridge Instantly

Sign the transaction with your favorite non-custodial wallet. Receive the target assets directly on the destination chain in under 3 minutes.

Full Fee Transparency — No Surprises

Many bridge aggregators hide heavy margins within slippage limits or exchange spread calculations. PortSwaps displays the raw protocols components clearly.

Bridged Protocol Pathway	Aggregator Route Fee	Target Blockchain Gas	Liquidity Provider Fee	Total Transfer Costs
PortSwaps Route A (Optimism ➔ Base)	$0.001	$0.11	$0.05	$0.161
PortSwaps Route B (Ethereum ➔ Arbitrum)	$0.001	$0.74	$0.12	$0.861
PortSwaps Route C (BNB Chain ➔ Solana)	$0.001	$0.08	$0.10	$0.181
PortSwaps Route D (Polygon ➔ Avalanche)	$0.001	$0.15	$0.08	$0.231

CertiK Audited Contract

Fully inspected and verified for cross-chain execution safety.

Non-Custodial Architecture

Zero custody over user assets. Safely swapped instantly.

100% Open Source Protocol

Review our routing configurations and deployment scripts on GitHub.

Trusted by Power DeFi Users Globally

From algorithmic market makers to standard retail yield farmers, thousands rely on PortSwaps daily to keep bridge transaction loss to the structural absolute minimum.

$2.4B+

Total Volume Bridged

"Before PortSwaps, I was losing close to $25 in gas per transfer every time I had to cycle yield across Optimism and Arbitrum. Now I pay pennies, routing instantly. Unbelievable optimizer!"

Devon Lane

Independent Yield Farmer

"We run high frequency cross-chain Arbitrage routes. Shaving off 80% on protocol gas costs transforms unprofitable spreads into substantial trading wins. Highly recommend PortSwaps protocol."

Elena Rostova

Arbitrage Strategist

Frequently Asked Questions

Everything you need to know about our low-fee routing mechanisms.

Read All Frequently Asked Questions

Start Saving on Every Bridge Swap Today

Join over 500,000+ users worldwide taking advantage of cost-effective routing pathways. Stop overpaying for basic cross-chain swaps.

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The Cheapest Fee Bridge Swap in DeFi