Free developer tools

Send requests to any public API, inspect responses, and try curated Tatum Gateway, Data API, and Rates examples.

Pick any color, sample from images or your screen, generate palettes, check contrast, and copy hex / RGB / HSL.

Live slow / medium / fast Ethereum gas prices, historical Gwei chart, and Wei ↔ Gwei ↔ Ether converter.

Live trending tokens across major chains — ranked by volume, liquidity, and on-chain momentum.

Convert text to hexadecimal or hex to text instantly — perfect for encoding, debugging, and blockchain development.

Generate SHA-256, SHA-512, Keccak-256 (Ethereum), MD5, and SHA-1 hashes from text or files.

Convert Unix timestamps to human-readable dates and vice versa — essential for blockchain development.

Encode text to Base64 or decode Base64 to text instantly — commonly used for APIs and data encoding.

Encode special characters in URLs or decode percent-encoded URLs — essential for query parameters.

Minify JSON to reduce file size or prettify for readability — validates and shows size savings.