GeoJS vs PostalCodes
Same instrument, two spec sheets — measured, not claimed.
GeoJS vs PostalCodes: common questions
Which is more reliable, GeoJS or PostalCodes?
On our scheduled checks, GeoJS leads on measured uptime — GeoJS at 100% versus PostalCodes at 99.02% over 90 days. These are our own probe results, not provider claims; the uptime bars above show the day-by-day record for both.
Which is faster, GeoJS or PostalCodes?
GeoJS has the lower median latency in our checks — GeoJS responds in 107 ms versus PostalCodes at 1030 ms (P50). Tail latency (P95) is in the table above; for most workloads the median is the number that shapes how the API feels.
Do GeoJS and PostalCodes need an API key?
Neither needs a paid key — GeoJS is callable with no signup, and PostalCodes is callable with no signup. Both are quick to prototype with; rate limits still apply.
Can I call GeoJS and PostalCodes from the browser?
Only GeoJS is browser-friendly — it returns CORS headers over HTTPS. PostalCodes needs a server-side call or proxy, so factor that into which one fits a front-end project.
Are GeoJS and PostalCodes free for commercial use?
GeoJS has unclear commercial terms, and PostalCodes has unclear commercial terms. We track service terms and the data license as separate fields — see the Commercial use and Data license rows above, and confirm both before shipping either in a paid product.