Greasy Fork is available in English.

Gemini JSON Wrapper – Highlight-Safe,

Unwraps Gemini JSON, soft-fixes \\n, preserves highlight

You will need to install an extension such as Tampermonkey, Greasemonkey or Violentmonkey to install this script.

You will need to install an extension such as Tampermonkey to install this script.

You will need to install an extension such as Tampermonkey or Violentmonkey to install this script.

You will need to install an extension such as Tampermonkey or Userscripts to install this script.

You will need to install an extension such as Tampermonkey to install this script.

You will need to install a user script manager extension to install this script.

(I already have a user script manager, let me install it!)

You will need to install an extension such as Stylus to install this style.

You will need to install an extension such as Stylus to install this style.

You will need to install an extension such as Stylus to install this style.

You will need to install a user style manager extension to install this style.

You will need to install a user style manager extension to install this style.

You will need to install a user style manager extension to install this style.

(I already have a user style manager, let me install it!)

// ==UserScript==
// @name         Gemini JSON Wrapper – Highlight-Safe, 
// @namespace    http://tampermonkey.net/
// @version      3.0
// @description  Unwraps Gemini JSON, soft-fixes \\n, preserves highlight
// @author       copypaste
// @match        *://gemini.google.com/*
// @grant        none
// ==/UserScript==

(function() {
    'use strict';

    const CONFIG = {
        wrapStyles: {
            whiteSpace: 'pre-wrap',
            wordBreak: 'break-word',
            overflowWrap: 'break-word',
            overflowX: 'auto',
            maxWidth: '100%',
            fontFamily: 'monospace',
            fontSize: '13px',
            lineHeight: '1.4'
        },
        targetSelectors: [
            '[data-text-generation-response] pre',
            '[data-text-generation-response] code',
            '.text-generation-response pre',
            '.text-generation-response code',
            '.response-output pre',
            '.response-output code',
            'pre',
            'code'
        ],
        checkInterval: 2000,
        minJsonLength: 100,
        dataAttribute: 'data-json-wrapped'
    };

    function looksLikeJSON(str) {
        const trimmed = str.trim();
        if (!trimmed.startsWith('{') && !trimmed.startsWith('[')) return false;
        try {
            JSON.parse(trimmed);
            return true;
        } catch {
            return false;
        }
    }

    function softUnescape(str) {
        return str.replace(/\\n/g, '\n').replace(/\\t/g, '\t');
    }

    function processCodeElements() {
        let changes = 0;
        CONFIG.targetSelectors.forEach(selector => {
            document.querySelectorAll(selector).forEach(el => {
                if (el.hasAttribute(CONFIG.dataAttribute)) return;

                const hasSpans = el.innerHTML.includes('<span');
                if (!hasSpans) {
                    const txt = el.textContent.trim();
                    if (txt.length >= CONFIG.minJsonLength && looksLikeJSON(txt)) {
                        el.textContent = softUnescape(txt);
                        changes++;
                    }
                }

                Object.assign(el.style, CONFIG.wrapStyles);
                el.setAttribute(CONFIG.dataAttribute, 'true');
            });
        });

        if (changes > 0) console.debug(`[JSON Wrapper] Updated ${changes} elements`);
    }

    function debounce(func, delay) {
        let timeoutId;
        return function(...args) {
            clearTimeout(timeoutId);
            timeoutId = setTimeout(() => func.apply(this, args), delay);
        };
    }

    const debouncedProcess = debounce(processCodeElements, 500);

    function initObserver() {
        const observer = new MutationObserver((mutations) => {
            let shouldProcess = false;
            for (const mutation of mutations) {
                if (
                    mutation.type === 'childList' && mutation.addedNodes.length > 0 ||
                    (mutation.type === 'attributes' &&
                     CONFIG.targetSelectors.some(sel => sel.includes(mutation.attributeName)))
                ) {
                    shouldProcess = true;
                    break;
                }
            }
            if (shouldProcess) debouncedProcess();
        });

        const containers = document.querySelectorAll('.response-output, [data-text-generation-response]');
        if (containers.length > 0) {
            containers.forEach(container => {
                observer.observe(container, {
                    childList: true,
                    subtree: true,
                    attributes: true,
                    attributeFilter: ['class', 'data-text-generation-response']
                });
            });
        } else {
            observer.observe(document.body, {
                childList: true,
                subtree: true
            });
        }
    }

    function init() {
        processCodeElements(); // Initial run
        initObserver();        // Watch for dynamic loads

        setInterval(() => {
            debouncedProcess(); // Lazy interval refresh in case observer misses something
        }, CONFIG.checkInterval);
    }

    if (document.readyState === 'loading') {
        document.addEventListener('DOMContentLoaded', init);
    } else {
        init();
    }

})();