Create a Custom List
Generate a list of arbitrary length with arbitrary items. Runs entirely in your browser, so your data never leaves your device.
Output
The result appears here as you type.
How to use Create a Custom List
- 1. Set the number of items. Enter how many items you want the generated list to contain. This becomes the exact line count of the output, whether you need five placeholders or five hundred.
- 2. Write an item template. Type a template using {i} anywhere you want the item number to appear, for example 'row {i}' or 'user{i}@example.com'. Each generated line substitutes the current index into that spot.
- 3. Copy the generated list. The output pane fills with your requested number of items, each one built from the template. Copy it into a test fixture, spreadsheet or seed script.
When to use Create a Custom List
Create a Custom List generates a numbered list of any length from a template you write. It is for when you need repetitive placeholder data with a predictable, numbered pattern rather than random content.
- Seeding test data for a database. You need fifty rows like 'test-user-1' through 'test-user-50' to seed a development database. Setting the count to 50 and the template to 'test-user-{i}' produces the exact list.
- Generating placeholder emails for a form test. A signup form needs to be load tested with unique email addresses. A template like 'tester{i}@example.com' with a large item count gives you as many unique addresses as you need.
- Building numbered slide or section titles. A presentation outline needs headings like 'Chapter {i}' for twelve chapters. This generates the full numbered list instantly instead of typing each heading by hand.
- Creating sequential filenames for a script. A batch script expects files named 'frame{i}.png' for a set number of frames. Generating that list here gives you the exact filenames to reference in the script.
Examples
Three numbered items
Output
item 1 item 2 item 3
About the Create a Custom List tool
Create a Custom List is a free online tool that works entirely inside your web browser. Generate a list of arbitrary length with arbitrary items. Because the processing happens on your own device, nothing you enter is uploaded, logged or stored anywhere.
This page is one of 114 List utilities on EditSafely. Each one does a single job well, and all of them follow the same rule: your input stays on your machine.
You can shape the output with 2 settings, including Number of items and Item template ({i} is replaced by the item number), and the result refreshes the moment you change one. A worked example further down the page shows exactly what the tool produces for a real input.
Because nothing leaves your device, the tool is suitable for sensitive content such as internal documents, credentials or customer data. It also responds instantly, since every keystroke is handled on your own machine rather than by a remote API.
Frequently asked questions
Does Create a Custom List cost anything?
Yes, it is completely free. All 2,658 tools on EditSafely work without an account, a subscription or usage limits.
Does the generator send anything to a server?
No data leaves your device. The whole tool is JavaScript that runs inside your browser tab, so there is no upload, no server-side processing and no log of what you did. If you disconnect from the internet after the page loads, it keeps working.
How do I get a different result?
Run the generator again. Each run is computed fresh on your device, and any options you change are applied to the next result immediately.
Do I need to sign up or install anything?
Nothing to install and no account needed. Open the page in any up-to-date browser, including on a phone or tablet, and the tool is ready.
How do I use the result?
The output panel has a one-click copy button, and you can keep refining the input while you work; the result updates in place as you type.