Generate a Random String
Create a random string of any length from a chosen character set. Runs entirely in your browser, so your data never leaves your device.
Output
The result appears here as you type.
How to use Generate a Random String
- 1. Set the length. Enter how many characters each string should have in Length (characters). Longer values reduce the chance of collisions when generating tokens or IDs.
- 2. Choose how many strings to generate. Enter a count in How many strings to produce several at once, useful when you need a batch of unique tokens rather than a single value.
- 3. Pick the character set. Choose Letters and digits, Letters only, Lowercase letters, Uppercase letters, Digits only or Hexadecimal depending on what format your tokens or IDs need to match.
- 4. Copy the generated strings. Copy the list of strings, one per line, from the output pane into your test fixtures, seed data or nonce list.
When to use Generate a Random String
Generate a Random String is the general-purpose version of the string generators here, producing one or many random values at any length from any of the common character sets. It covers tokens, nonces and IDs where you need a batch rather than a single value.
- Seeding a batch of API keys for tests. A test suite needs 20 distinct fake API keys to populate a mock user table. Set the count to 20 and the length to 32 hexadecimal characters to fill the column.
- Generating one-time nonces. A script needs unique nonce values for a set of signed requests during a load test. Generating several 16-character hexadecimal strings at once gives you a ready supply.
- Populating a demo user table. A demo dataset needs unique-looking user IDs. Generate a batch of 10-character alphanumeric strings and assign one to each row.
- Creating placeholder session tokens. A frontend mockup needs realistic session tokens to display in a developer tools panel screenshot without exposing anything from a real backend.
Examples
A 16-character token
Input
Output
k7Qx2pR9mZ4aT1nB
About the Generate a Random String tool
Generate a Random String runs as plain JavaScript in your browser tab, with no server behind it. Create a random string of any length from a chosen character set. Whatever you put in stays on your device from start to finish.
The tool is part of EditSafely's String Tools section, 159 single-purpose utilities built around the same idea: open the page, get the result, keep your data to yourself.
You can shape the output with 3 settings, including Length (characters), How many strings and Characters, 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.
That local-first design has practical benefits beyond privacy. The tool keeps working on a flaky connection once the page has loaded, results are instant because nothing round-trips to a server, and it is safe to use with confidential material.
Frequently asked questions
Does Generate a Random String 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.