Free tools
Free developer tools
Practical blockchain utilities powered by the Tatum API — no signup required to explore.
API Tester
LiveSend requests to any public API, inspect responses, and try curated Tatum Gateway, Data API, and Rates examples.
HTML Color Picker
LivePick any color, sample from images or your screen, generate palettes, check contrast, and copy hex / RGB / HSL.
Ethereum Gas Tracker
LiveLive slow / medium / fast Ethereum gas prices, historical Gwei chart, and Wei ↔ Gwei ↔ Ether converter.
Top Trending Tokens
LiveLive trending tokens across major chains — ranked by volume, liquidity, and on-chain momentum.
Text to Hex Converter
LiveConvert text to hexadecimal or hex to text instantly — perfect for encoding, debugging, and blockchain development.
SHA-256 Hash Generator
LiveGenerate SHA-256, SHA-512, Keccak-256 (Ethereum), MD5, and SHA-1 hashes from text or files.
Unix Timestamp Converter
LiveConvert Unix timestamps to human-readable dates and vice versa — essential for blockchain development.
Base64 Encoder / Decoder
LiveEncode text to Base64 or decode Base64 to text instantly — commonly used for APIs and data encoding.
URL Encoder / Decoder
LiveEncode special characters in URLs or decode percent-encoded URLs — essential for query parameters.
JSON Minifier
LiveMinify JSON to reduce file size or prettify for readability — validates and shows size savings.