Generators
Coupon / Promo Code Generator
Generate bulk promo codes from a custom pattern.
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What is Coupon Codes?
A coupon code generator that lets you define a pattern (letters, digits, separators) and produce a batch of unique codes for promotions and giveaways.
How it works
The pattern is expanded using crypto.getRandomValues; a uniqueness set guarantees no duplicates within a batch.
- Enter your input. Type or paste your input into the field above — the tool responds instantly.
- Review the result. Output updates live as you type. Everything runs entirely in your browser.
- Copy or download. Use the Copy button to grab the result, or Download to save it as a file.
Examples
Realistic sample
Type or paste any realistic input — the tool computes the result locally and instantly.
Common mistakes
Expecting a server round-trip
Nothing is uploaded — every tool in this category runs entirely in your browser.