Buidl
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Developer tools for builders who ship fast
Web3
Address & Keys
Address Checksum
ENS Name Resolver
Private Key to Address
Multi-Chain Address Deriver
Transaction & Gas
Transaction Decoder
Gas Price Estimator
Token & Decimals
ETH Unit Converter
Token Decimals Converter
Smart Contracts
Function Selector
ABI Encoder/Decoder
Event Topic Calculator
Signature Verifier
Smart Contract Method ID Finder
Contract Storage Slot Calculator
Proxy Implementation Checker
CREATE2 Address Predictor
Contract Size Calculator
Encoding & Hashing
Keccak-256 Hash
EIP-712 Message Hasher
ECDSA Signature Parser
DeFi & Protocols
Uniswap Price Calculator
Token Launch Calculator
Governance & DAOs
Timelock Transaction Builder
Safe Batch Transaction Builder
Testing & Debugging
Foundry Cheatcode Generator
Block Number ⇔ Timestamp
Revert Reason Decoder
Transaction Trace Visualizer
Tokens & NFTs
ERC20 Permit Generator
NFT Metadata Validator
Token URI Generator
Security & Analysis
Bytecode Differ
Access Control Visualizer
Delegatecall Storage Analyzer
Converters
Time & Date
Epoch Timestamp Converter
Numbers
Number Base Converter
Data Formats
JSON to Table/CSV
JSON ⇔ YAML
XML ⇔ JSON
CSV ⇔ JSON
Image to Base64
Colors
Color Converter
Image Color Picker
Text
Case & Format
Case Converter
Escape / Unescape
Reverse String
Whitespace Remover
Comparison
List Comparer
Text Comparer
Analysis
Text Analyzer
Regular Expression Tester
Line Operations
Line Sorter
Remove Duplicates
Encoders / Decoders
Text Encoders
Base64 Text
Binary Encoder/Decoder
HTML Encoder/Decoder
URL Encoder/Decoder
Hex Encoder/Decoder
Cryptographic
ROT13 Cipher
JWT Decoder
Formatters
Code Formatters
CSS Formatter/Minifier
SQL Formatter
XML Formatter
SVG Viewer
JSON Formatter
Data Formatters
YAML Validator
Generators
ID Generators
Nanoid Generator
UUID Generator
Text Generators
Random String Generator
Cryptographic
Hash / Checksum
Password Generator
Color & Graphics
Color Palette Generator
QR Code Generator
Gradient Generator
