Check the spec
Charset, lengths and check-digit rules for this symbology are listed above — the form enforces them instantly.
Free tools · Barcodes
Generate Telepen Numeric codes that scan.
Dense numeric Telepen; digits and X only. Type the payload for Telepen Numeric below — validation, check digits and a local scan-test run in your browser before anything exports.
Barcode generator
Type text, get a symbol.
Runs locally in your browser. Nothing is uploaded; the field clears after ten idle minutes.
Advanced (GS1, checks, profiles, retail add-ons, supply-chain carrier)
This symbology has no tunable options — the engine picks the densest valid symbol.
Style (readable text, bar height, export size)
Bar height stretches bars vertically, which scanners ignore (only horizontal timing matters). The SVG download keeps the engine's exact geometry.
Specification
| Standards | Telepen specification |
|---|---|
| Character set | Digits and X only, 1–60 characters. |
| Lengths | 12345 |
| Check digits | Mod-127 style check digit computed by the engine. |
| Quiet zone | 10X quiet zone. |
| Capacity | Digits and X, 1-60 characters. |
Usage
Telepen Numeric labels industrial parts, documents and work orders: print it on badges, boards and bins where rugged 1D scanners operate.
- Telepen Numeric on asset tags for workshop tracking
- Telepen Numeric on work-order paperwork for line-side scanning
- Telepen Numeric proofs exported as PNG for quick sharing
Shape
Pros
- Telepen Numeric tolerates industrial printers, labels and badge stock.
- Case folding, padding and check rules are explained before encoding.
- PNG and SVG exports cover both quick sharing and print.
- The self-verify readout shows exactly what a scanner will observe.
Cons
- Telepen Numeric is wider per character than 2D codes for long payloads.
- Dense narrow bars demand close, steady photography when verifying.
- Damaged or smudged labels lose characters with no error correction.
- Colored or low-contrast prints scan poorly.
Form requirements
- Enter 12345.
- Digits and X only, 1–60 characters.
- The symbol is decoded again locally before preview and downloads unlock.
Sources
- AIM symbology specifications (AIM)
Related formats
Keep exploring.
How it works
Three steps, all on your device.
The same engine that reads barcodes writes them — every symbol is decoded again before you see it.
Type the payload
Every symbol is validated and decoded again on your device before it is shown.
Download and print
Take a resolution-independent SVG for print or a PNG for sharing. Nothing is uploaded.
Questions
Telepen Numeric Generator & Specs, answered.
If you manage servers by hand, see the engineering services behind this tools series.
What can I type for Telepen Numeric?
Digits and X only, 1–60 characters. Example: 12345.
How does Telepen Numeric handle check digits and printing?
Mod-127 style check digit computed by the engine. 10X quiet zone. Export SVG for print and PNG for sharing; both render on your device.
Is my data uploaded anywhere?
No. Encoding and verification run entirely in your browser — the page makes no network requests with your data, stores nothing, and wipes the field after ten idle minutes.
Related tools
More from the free-tools series.
Every tool runs entirely in your browser — no accounts, no uploads.
2D CODE / GENERATE
2D Code Generator
Generate QR, Data Matrix, Aztec, PDF417 and MaxiCode with error-correction, color and frame controls — validated and scan-verified in your browser.
Open the toolBARCODE / SCAN
Barcode Reader & Scanner
Decode 1D, 2D and postal barcodes from an uploaded image or your camera, with honest format and profile details. Nothing is uploaded anywhere.
Open the toolSSH / KEYS
PPK to OpenSSH Converter
Convert private keys between PuTTY .ppk, OpenSSH and legacy PEM formats — both directions, encrypted keys supported. Your key never leaves your browser.
Open the tool