Checklist Maker

About Checklist Maker

Checklist Features

Feature	What It Does
Add items	Type a task and press Enter or click Add to append it to the list
Check off	Click the checkbox to mark an item complete - it gets a strikethrough
Reorder	Use up and down buttons to move items and prioritise your list
Delete individual	Remove a single item with the delete button
Clear completed	Remove all checked items at once, keeping unchecked tasks visible
Progress bar	Shows completion percentage based on checked vs total items
Auto-save	Saves to localStorage on every change - no manual save needed
Copy as text	Copies the list with checkbox markers for pasting into messages or docs
Print	Opens a clean print layout for paper checklists

When to Use a Checklist

Use a checklist any time the cost of forgetting a step is higher than the 30 seconds it takes to write one. The Haynes et al. 2009 NEJM study of the WHO Surgical Safety Checklist across eight hospitals showed in-hospital death rates fell from 1.5% to 0.8% and major complications from 11.0% to 7.0% after a 19-item checklist was introduced - a 46% relative reduction in surgical mortality from a one-page piece of paper. Atul Gawande popularised the same principle in "The Checklist Manifesto" (2009), documenting how aviation and construction adopted the format decades earlier to cut preventable error.

Use Case	Example Items
Daily to-do list	Reply to emails, finish report, call dentist, buy groceries
Packing list	Passport, charger, medications, toiletries, travel adapter
Project tasks	Write spec, build prototype, get feedback, fix bugs, deploy
Shopping list	Milk, bread, eggs, chicken, rice, vegetables
Moving checklist	Redirect mail, transfer utilities, change address, clean old flat
Event planning	Book venue, send invitations, order catering, arrange music
Cleaning routine	Kitchen, bathroom, vacuum, laundry, bins, dust shelves
Onboarding steps	Set up email, install tools, read handbook, meet team, set goals

Checklist vs Other Task Tools

Tool	Best For	Limitations
Checklist (this tool)	Simple lists of tasks with completion tracking	No dates, no categories, no recurring items
Daily planner	Time-blocked schedule with hour slots	One day at a time, more complex setup
Habit tracker	Recurring daily habits with streaks	Only for daily repetition, not one-off tasks
Full project management app	Multi-person projects with deadlines, assignments, dependencies	Overhead for simple personal lists

If your list is simple and you just need to check things off, a checklist is the right tool. If you need time slots, use the daily planner. If you need to track daily repetition, use the habit tracker.

Tips for Effective Checklists

Tip	Why It Works
Keep items specific and actionable	"Call dentist to book appointment" is better than "dentist" - vague items get skipped
Order by priority or sequence	Put the most important or time-sensitive items first so they get done
Break large tasks into subtasks	"Write report" is daunting; "outline report", "draft intro", "add data" are manageable
Clear completed items regularly	A clean list with only remaining items reduces visual clutter and decision fatigue
Keep the list under 15 items	Long lists feel overwhelming; split into multiple focused lists if needed
Add items as they come to mind	Getting tasks out of your head and onto the list frees mental bandwidth

What Makes a Good Checklist Item?

A good checklist item is a single, concrete action that can be ticked off in one pass. Gawande's "Checklist Manifesto" distinguishes between two formats - the DO-CONFIRM checklist, where the team completes work from memory and then reads the list aloud to confirm nothing was missed, and the READ-DO checklist, where the list is followed step by step in real time. Personal to-do lists almost always work better as READ-DO: write what you will actually do, in the order you will do it.

Weak Item	Strong Item	Why
Tax return	Download 2025/26 P60 from work portal	Names the concrete first step, not a category of work
Call mum	Call mum Saturday 10am (about birthday)	Locks in when and why, removes the decision
Fix bug	Reproduce cart-checkout bug on staging	First action is testable, not open-ended
Get fit	30-min walk at 7am Mon/Wed/Fri	A goal is not a task - the task is the action that gets you there
Review report	Read Q1 report intro + exec summary	Caps the scope so it fits a single sitting

The "two-minute rule" popularised by David Allen in "Getting Things Done" (Penguin, 2001) is worth applying at the point of capture: if an item would take less than two minutes, do it now instead of writing it down. Adding tiny tasks inflates a list and drowns out the items that matter.

Does Writing Tasks Down Really Help?

There is good evidence that it does, for two separate reasons - recall of what needs doing, and release of the mental tension of holding it in your head. Bluma Zeigarnik's 1927 paper "On Finished and Unfinished Tasks" found participants were roughly twice as likely to remember incomplete tasks as completed ones, because an open task maintains cognitive tension until it is either finished or offloaded somewhere trusted. A 2025 meta-analysis of the Zeigarnik and Ovsiankina effects in Humanities and Social Sciences Communications found that while the pure memory effect is weaker than originally claimed, the tendency to resume interrupted tasks (the Ovsiankina effect) holds up well across replications. Both point to the same practical conclusion: unfinished work sits heavy in working memory, and getting it onto a checklist lets the brain stop rehearsing it.

Allen calls this "getting it out of your head". The checklist itself becomes the external store, freeing working memory for the item currently being worked on. This is also why ticking items off feels disproportionately satisfying - the visible strike-through signals to the brain that the tension can finally be released. If your list goes stale and unticked for a week, the effect reverses: the list becomes a source of guilt rather than relief, which is why regularly clearing completed items matters.

Paper, App, or Browser Checklist?

Format	Strengths	Weaknesses
Paper	Zero friction, no battery, satisfying to tick, easy to carry	Easy to lose, no search, hard to reorder, single copy
Phone notes app	Always with you, syncs across devices, simple	Notifications and other apps pull attention, easy to lose inside folders
Dedicated task app (Todoist, Things, TickTick)	Due dates, recurring tasks, projects, priorities, tags	Feature overhead, subscription cost, setup friction, data lock-in
Browser checklist (this tool)	Nothing to install, works on any device with a browser, private by default, printable	Tied to one browser profile, no cross-device sync, single list
Spreadsheet	Columns for dates, owners, status, filters	Overkill for a personal list, slow on mobile

There is no single right answer. For a one-off list like packing for a trip or a launch-day runbook, a browser checklist is usually the fastest path - open the page, type the items, print or screenshot, done. For long-running multi-project life admin, a dedicated app with due dates will serve you better. A common pattern is to use a browser checklist for the current day or the current sprint, and a dedicated app for anything dated more than a few days out.

How Long Should a Checklist Be?

Shorter than you think. Gawande's aviation research found pilots' emergency checklists typically cap at 5 to 9 items per page because longer lists get skipped under pressure. The WHO Surgical Safety Checklist is three pages of 5 to 7 items each, split by phase (sign-in, time-out, sign-out). For a daily personal checklist, 5 to 10 items is a good target; 15 is a hard ceiling before items start getting silently ignored. If a list keeps growing past that, it is usually three smaller lists in a trench coat - split it by context (home, work, errands) or by day.

Research on "decision fatigue" by Roy Baumeister and colleagues (reviewed in his book "Willpower", Penguin, 2011) supports the same intuition: the more items on a list, the lower the willpower reserve available for the last few. Putting the most important 2-3 items at the top, and being willing to move unfinished items to tomorrow's list rather than guilt-padding today's, produces better follow-through than trying to plough through 20 items in a single day. The daily planner pairs well with this pattern for anyone who also wants time blocks, and the habit tracker handles the items that should recur every day without being rewritten.

Checklists for Specific Contexts

Context	What to Include	What to Skip
Travel packing	Passport, charger, chargers for each device, medications with prescription, adapter for destination, booking confirmations	Generic items you always pack - your muscle memory handles those
Pre-flight / long drive	Tyres, fuel/charge, documents, phone charger, emergency snacks, destination address loaded	Items that do not matter if forgotten (entertainment)
House move	Redirect mail (Royal Mail 3-12 months), transfer utilities, council tax notification, update driving licence, register with new GP	Low-priority subscriptions - do in week 2
New baby prep	Car seat fitted, hospital bag (NHS recommends packing from 36 weeks), nappies, clothes in two sizes, feeding supplies	Toys and decoration - these can wait
Software deploy	Pull request approved, tests green, database migration reviewed, rollback plan written, on-call notified, monitoring dashboard open	Aesthetic code review notes that can wait for next deploy
Interview prep	Read JD + company About page, prepare 3 STAR stories, 3 questions for them, route and timing, spare copy of CV	Over-preparing trivia - focus on 80% hits

Common Mistakes That Make Checklists Useless

Mistake	Why It Fails	Better Approach
Mixing goals and tasks	"Learn French" is not actionable on any given day	Break into the next physical step: "Do 15 min Duolingo lesson"
Keeping yesterday's unchecked items forever	The list becomes a guilt museum	Clear completed daily; roll unchecked items or accept they are not happening
Adding items you have already done	Feels productive, but trains the habit of rewarding completion theatre	Only list tasks before you start them
Writing cryptic abbreviations	"CB re: PO" means nothing next Tuesday	Write full context: "Call back supplier about PO #4321"
Vague verbs like "think about"	Cannot be finished, so stays forever	Use concrete verbs: write, email, call, read, send, pay, book
One giant mixed list	Errands, work, and life admin compete for attention	Keep separate lists for separate contexts, or tag by context inside one list

Sharing and Printing

The copy button exports your checklist as formatted text with checkbox characters (checked and unchecked). This format works well when pasted into Slack, email, or notes apps. The print button opens a clean layout optimised for paper - useful for packing lists, shopping lists, or any checklist you want to carry with you.

For longer-form writing, the online notepad provides a distraction-free text editor. To time your work on checklist items, the Pomodoro timer structures your focus sessions. All data stays in your browser's localStorage with nothing sent to any server.

Sources

• Haynes AB et al. - A Surgical Safety Checklist to Reduce Morbidity and Mortality in a Global Population, NEJM 2009
• WHO - Safe Surgery and the Surgical Safety Checklist
• Zeigarnik B - On Finished and Unfinished Tasks (1927 original paper, English translation)
• Interruption, Recall and Resumption: A Meta-Analysis of the Zeigarnik and Ovsiankina Effects, Humanities and Social Sciences Communications 2025
• Psychology Today - Zeigarnik Effect Overview
• Atul Gawande - The Checklist Manifesto (author page)
• Royal Mail - Redirection Service (UK house-move reference)