Overleaf Toolbar Word Count

Show live word count in the Overleaf PDF toolbar

K instalaci tototo skriptu si budete muset nainstalovat rozšíření jako Tampermonkey, Greasemonkey nebo Violentmonkey.

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

K instalaci tohoto skriptu si budete muset nainstalovat rozšíření jako Tampermonkey nebo Violentmonkey.

K instalaci tohoto skriptu si budete muset nainstalovat rozšíření jako Tampermonkey nebo Userscripts.

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

K instalaci tohoto skriptu si budete muset nainstalovat manažer uživatelských skriptů.

(Už mám manažer uživatelských skriptů, nechte mě ho nainstalovat!)

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.

(Už mám manažer uživatelských stylů, nechte mě ho nainstalovat!)

// ==UserScript==
// @name         Overleaf Toolbar Word Count
// @namespace    parnavh.dev
// @version      2026-08-04
// @description  Show live word count in the Overleaf PDF toolbar
// @match        https://www.overleaf.com/project/*
// @grant        none
// @author       parnavh
// @icon         https://www.google.com/s2/favicons?sz=64&domain=overleaf.com
// @license MIT
// ==/UserScript==

(function () {
    'use strict';

    let counter;

    async function updateWordCount() {
        try {
            const res = await fetch(location.pathname + "/wordcount", {
                credentials: "same-origin",
                cache: "no-store"
            });

            if (!res.ok) return;

            const { texcount } = await res.json();

            counter.textContent = `Words: ${texcount.textWords.toLocaleString()}`;
        } catch (e) {
            console.error("Word count failed", e);
        }
    }

    function install() {
        if (document.getElementById("tm-word-count"))
            return false;

        const toolbar = document.querySelector(".toolbar-pdf-left");
        if (!toolbar)
            return false;

        counter = document.createElement("span");
        counter.id = "tm-word-count";
        counter.textContent = "Words: ...";

        counter.style.cssText = `
            font-size:14px;
        `;

        toolbar.appendChild(counter);

        updateWordCount();

        const compileBtn = document.querySelector(".compile-button");

        if (compileBtn) {
            const compileObserver = new MutationObserver(() => {
                if (compileBtn.dataset.olLoading === "false") {
                    updateWordCount();
                }
            });

            compileObserver.observe(compileBtn, {
                attributes: true,
                attributeFilter: ["data-ol-loading"]
            });
        }

        return true;
    }

    // Wait until Overleaf has rendered
    const observer = new MutationObserver(() => {
        if (install()) {
            observer.disconnect();
        }
    });

    observer.observe(document.body, {
        childList: true,
        subtree: true
    });
})();