Deep work is the ability to focus without distraction on cognitively demanding tasks. Popularized by Cal Newport's 2016 book Deep Work, it refers to concentrated, high-value work that builds rare, valuable skills. In contrast, shallow work (emails, meetings, notifications) feels productive but produces little actual output. Deep work is the foundation of expertise and meaningful professional achievement.
The Deep Work Log is a lightweight, browser-based focus journal for tracking deep work sessions. Log the date, duration, task description, and quality rating for each session. Over time, the log reveals your focus patterns, peak productivity hours, optimal work duration, and total deep work hours — enabling data-driven optimization of your productivity.
Tracking creates accountability and visibility. Logging each session motivates consistency and commitment. Patterns emerge — which days and times you focus best, whether morning or evening is more productive, what duration feels optimal. With this data, you can protect peak focus time deliberately and eliminate distractions systematically.
The Deep Work Log uses markdown format for easy reading and exporting. Each entry captures: date, duration (minutes or hours), task name, what you accomplished, and a focus quality rating (1–10). The markdown structure makes it easy to export, backup, or migrate your focus journal data.
Completely private. All session data is stored in your browser's localStorage — it persists between visits on the same device and browser, but is never sent to any server or cloud service. Your productivity data stays on your device only. Clearing browser data will erase your log, so export it first if you need backup.
Newport recommends: (1) schedule deep work blocks in advance, (2) track deep work hours like an athlete tracks training, (3) eliminate social media and notifications during focus time, (4) create a "shutdown ritual" to clearly end your workday, and (5) target 4 hours of deep work daily as a realistic maximum for knowledge workers. The Deep Work Log supports practices 1, 2, and tracking.
Cal Newport recommends 4 hours as the realistic daily maximum for knowledge workers. However, start with what's achievable — 1–2 hours daily is excellent and sustainable. Use the deep work logger to track your realistic capacity, then gradually increase as your focus stamina improves. Quality matters more than quantity.
Yes. Export your entries in markdown format for backup, analysis, or sharing. Since data is stored locally in your browser, exporting regularly ensures you have a permanent copy. You can import this data into spreadsheets or other tools for deeper productivity analysis.
Best practices: (1) schedule deep work blocks before other meetings, (2) close email and messaging apps, (3) use focus tools like this Deep Work Log, pomodoro timers, or noise generators, (4) inform colleagues of your focus time, (5) turn off notifications, (6) use a "do not disturb" status. Log your sessions to track consistency and identify what works for you.
Yes, completely free. One of 52 free tools available at jasperbernaers.com. No signup required, no account, no tracking — just a simple markdown-based focus journal for tracking your deep work hours and patterns.