Check the spec
Lengths and check-digit rules for this postal symbology are listed above.
Free tools · Logistics
Generate USPS PLANET postage symbols.
Legacy USPS tracking barcode (confirm-service successor data). Enter 11 or 13 digits for USPS PLANET below — lengths and check digits validate instantly in your browser before the symbol renders.
Postal barcode generator
Pick a post, type the data.
Runs locally in your browser. Nothing is uploaded; validation errors name the exact rule.
Style (module size, bar height, readable text)
Rendering symbol…
Specification
| Standards | USPS postal specifications |
|---|---|
| Character set | Digits only — 11 or 13 digits without the check digit; the engine appends it. |
| Lengths | 11 or 13 digits |
| Check digits | Digits only — 11 or 13 digits without the check digit; the engine appends it. |
| Quiet zone | Calm quiet zones on both sides; pure black on white for sorter readability. |
| Capacity | Digits only — 11 or 13 digits without the check digit; the engine appends it. |
Usage
USPS PLANET routes United States mail through automated sorters: print it on envelopes and parcels where United States carriers expect it.
- USPS PLANET on envelopes for United States automated sorting
- USPS PLANET on parcels with the example 12345678901 as a starting point
- USPS PLANET proofs exported as SVG for print-safe output
Shape
Pros
- USPS PLANET is accepted by United States sorting automation.
- Lengths and check digits validate instantly with the exact rule named.
- SVG export stays sharp for envelopes and parcel labels.
- The symbol is read back locally before preview unlocks where a reader exists.
Cons
- USPS PLANET is single-purpose — it carries postal data, not general text.
- Wrong lengths or missing check digits are rejected instead of printed.
- Low contrast or tight quiet zones fail high-speed sorters first.
- Screenshots prove encoding, not sorter-grade print quality.
Form requirements
- Enter 11 or 13 digits.
- Digits only — 11 or 13 digits without the check digit; the engine appends it.
- Preview and downloads stay withheld until local verification passes where a reader exists.
Sources
- USPS Intelligent Mail specifications (USPS)
Related formats
Keep exploring.
How it works
Three steps, all on your device.
The same engine that prints parcel labels worldwide, running in your browser.
Type the data
The on-device engine enforces the rest and appends check digits where the standard says so.
Verify, then print
The symbol is rasterized and read back locally before preview and downloads unlock.
Questions
USPS PLANET Generator & Specs, answered.
If you manage servers by hand, see the engineering services behind this tools series.
What do I type for USPS PLANET?
Digits only — 11 or 13 digits without the check digit; the engine appends it. Try the example 12345678901 first.
Does USPS PLANET need a check digit?
Digits only — 11 or 13 digits without the check digit; the engine appends it. The engine computes or verifies it and names the expected digit on mismatch.
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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