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 Alpha codes that scan.
Full-ASCII Telepen for expressive 1D labels. Type the payload for Telepen Alpha 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 | Printable ASCII, 1–60 characters. |
| Lengths | HELLO |
| Check digits | Mod-127 style check digit computed by the engine. |
| Quiet zone | 10X quiet zone. |
| Capacity | Full ASCII, 1-60 characters. |
Usage
Telepen Alpha labels industrial parts, documents and work orders: print it on badges, boards and bins where rugged 1D scanners operate.
- Telepen Alpha on asset tags for workshop tracking
- Telepen Alpha on work-order paperwork for line-side scanning
- Telepen Alpha proofs exported as PNG for quick sharing
Shape
Pros
- Telepen Alpha 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 Alpha 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 HELLO.
- Printable ASCII, 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 Alpha Generator & Specs, answered.
If you manage servers by hand, see the engineering services behind this tools series.
What can I type for Telepen Alpha?
Printable ASCII, 1–60 characters. Example: HELLO.
How does Telepen Alpha 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.
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