Generate formatted serial numbers with prefixes, segments, and checksums for products and licenses. Create 1000 trackable SKUs in one batch — local, free, no signup.
Content reviewed October 2026 · About Toolzum
Generate memorable coupon codes in bulk with prefixes and exclusions — WELCOME10-style campaigns. Create 500 trackable codes in one batch — local generation, free, no signup.
Generate random tokens in hex, base64, or alphanumeric formats for secrets and sessions. Hex and base64 draw from Web Crypto (alphanumeric uses Math.random — see format notes). The API-key preset mints 64-char secrets in one click — local generation, free, no signup.
Generate formatted software license keys from any X-template with dash separators. Issue random XXXX-XXXX keys for mock releases — local generation, free, no signup.
Compute NPS from promoter/passive/detractor counts — loyalty in one number. Score above 50 for world-class loyalty — free, local, no signup.
Stamp headers and footers on every PDF page — page numbers, dates, confidentiality lines. Number a 100-page report in one pass — local pdf-lib work, unlimited saves.
Prefix (product line) + segments (batch/year) + checksum character: ABC-2026-XXXX-C catches typos at entry. Keep total under 25 characters for labels.
Yes for manual entry — one check digit catches ~90% of transcription errors. Barcoded flows can skip them.
Random segments collide rarely at scale; sequential plus database-unique constraint guarantees. Choose per volume.
No — generation runs locally in your browser. Nothing leaves your device.
License Key Generator
Generate formatted software license keys from any X-template with dash separators. Issue random XXXX-XXXX keys for mock releases — local generation, free, no signup.
Coupon Code Generator
Generate memorable coupon codes in bulk with prefixes and exclusions — WELCOME10-style campaigns. Create 500 trackable codes in one batch — local generation, free, no signup.