Timer for Khan Academy

Question timer for Khan Academy exercises and quizzes: automatic question detection, count up or countdown, local-only records.

Timer for Khan Academy adds a small, private timer to Khan Academy practice questions, so you can see how long each question actually takes — while you work and in a summary at the end of the attempt. WHAT IT DOES • Automatic per-question timing. Open a practice exercise and a small floating panel appears in the corner of the page. It starts counting as soon as a question is on screen, restarts when you move to the next question, and keeps the time of the question you just finished. • Count up or count down. Record time spent, or set a per-question limit (5–3600 seconds) and watch the countdown, with a clear "over time" state and an optional two-tone beep when the limit is reached. The tone is synthesised by the browser, so no audio file is downloaded. • A summary at the end. On Khan Academy's end-of-attempt screen, a "Time per question in this attempt" card lists every question with its time and a Correct / Incorrect / Skipped / Over time tag, plus any time spent paused. The card is inserted above Khan Academy's own results, so nothing already on the page is covered. • Optional history. The toolbar popup lists your 500 most recent records: question number (for example Q2/4), time, whether you were over the limit, and the result of your first submission. • Settings that apply immediately: interface language (English or 简体中文), default timer mode, per-question time limit, beep on/off, show or hide the floating panel, start collapsed as a small pill, resume the previous time when a question is reopened, and a developer-mode view for reporting problems. WHY INSTALL IT • Pace yourself with real numbers. Khan Academy tells you whether an answer was right, not how long it took. A per-question timer turns "I am slow at this" into "question 3 took 4 minutes" — the number you can actually act on, especially when practising for a timed test. • It stays out of your way. The panel is small, can start as a collapsed pill, and can be hidden completely; the timer keeps recording either way. • It only observes. The extension never answers, checks, submits or skips anything, and it never changes your Khan Academy progress or scores. • Nothing leaves your browser. No account, no server, no analytics, no tracking. PRIVACY AND PERMISSIONS • Settings and timing records are stored only in your browser's local extension storage, on your own machine. • The extension contains no network code at all — no fetch, XMLHttpRequest, WebSocket, remote scripts or dynamic code evaluation. The build runs an automated check that fails if any of these appear in the shipped files, so "your data never leaves your device" is enforced, not just promised. • It asks for two permissions only: – storage: to save your settings and timing records locally. – activeTab: so the popup can show the live timer status of the tab you are looking at. It has no access to your history, cookies, passwords, clipboard or files. • It runs only on khanacademy.org. Question text and your typed answers are never stored — only timing data and a short local fingerprint of the question, used to tell one question from another. • You can clear all records at any time from the popup, and removing the extension deletes its local data. REQUIREMENTS AND SCOPE • Designed for khanacademy.org practice exercises, including quizzes and unit tests. Practice exercises are the most thoroughly verified; where a page does not expose the question information the timer relies on, the popup says so instead of showing a wrong time. • No Khan Academy account is required for the timer itself, and it works offline once installed. NOT AFFILIATED WITH KHAN ACADEMY This is an independent, unofficial extension. It is not affiliated with, endorsed by, or connected to Khan Academy. The name is used only to describe the website it is designed for. SUPPORT Bug reports and questions: https://github.com/pizht/timer-for-khan-academy/issues — please include your browser version, the extension version shown in the popup, the exercise URL and the popup's status text.