Contract Diff Checker

The Contract Diff Checker is a tool that lets you compare two smart contract source code files side by side. Any differences between the files will be automatically highlighted.

How to use it:

  1. Enter two contract addresses and click the Lookup button to load the contract details and their source code.
  1. If either contract contains multiple source files, each file will be listed with a name and number.

    Select the specific source file for each contract you wish to compare, then click the Compare Difference button at the bottom of the page.
  1. Any differences between the selected source files will be clearly highlighted for easy review.
Teck Yuan Lee
Teck Yuan Lee
Last updated:

Still Have Questions?

Supported Explorers

Abscan
Apescan
Aptoscan
ArbiScan
BaseScan
Berascan
Blastscan
BscScan
BTTCScan
CeloScan
Etherscan
Fraxscan
GnosisScan
HyperEVMScan
KatanaScan
Lineascan
Mantlescan
MegaETH Etherscan
MemeCoreScan
MonadScan
Moonscan
Moonriver Explorer
opBNB Explorer
OP Mainnet Etherscan
Plasmascan
PolygonScan
SeiScan
SnowScan
SonicScan
StableScan
Taikoscan
Uniscan
WorldScan
XDCScan