Simple script to copy all the code blocks at once from an Etherscan smart contract code page.

copy-all-code.js

// Simple script to copy all the code blocks at once from an Etherscan smart contract code page
// (example: https://etherscan.io/address/0x43506849d7c04f9138d1a2050bbf3a0c054402dd#code).

// Uses a hardcoded CSS selector, must update if Etherscan updates its frontend markup
// (this script was last updated February 2024).

// References:
// 1. Etherscan uses Ace for code blocks (https://ace.c9.io/)
//     - API reference: https://ajaxorg.github.io/ace-api-docs/ 
// 2. Etherscan's "Copy source to clipboard" button is implemented in `copySourceCodeBtn`,
//    which can be found in assets/js/custom/addresspage4.js.

let allCodeBlocks = '';
document.querySelectorAll('pre[id^=editor]').forEach(node => {
  const editor = ace.edit(node.id);
  editor.selectAll();
  const text = editor.getCopyText();
  allCodeBlocks += text + '\n\n';
});
navigator.clipboard.writeText(allCodeBlocks);

// Bookmarklet version:
// javascript:allCodeBlocks="";document.querySelectorAll("pre[id^=editor]").forEach(t=>{const e=ace.edit(t.id);e.selectAll();const o=e.getCopyText();allCodeBlocks+=o+"\n\n"}),navigator.clipboard.writeText(allCodeBlocks);