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Chronicling America vs Parking St.Gallen

Same instrument, two spec sheets — measured, not claimed.

APIChronicling AmericaNEW—Parking St.GallenNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
Authnonenone
CORSnoyes
HTTPSyesyes
Card requirednono
Commercial useyesunclear
Data licensePublic domain / no known copyright (Library of Congress)Unverified
Free tierFree — public-domain collection dataFree — limits not published
Rate limitLoC throttles heavy crawling (see LoC API policy)Unpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

Chronicling America vs Parking St.Gallen: common questions

Which is more reliable, Chronicling America or Parking St.Gallen?

On our scheduled checks, Parking St.Gallen leads on measured uptime — Chronicling America at —% versus Parking St.Gallen at —% over 90 days. These are our own probe results, not provider claims; the uptime bars above show the day-by-day record for both.

Do Chronicling America and Parking St.Gallen need an API key?

Neither needs a paid key — Chronicling America is callable with no signup, and Parking St.Gallen is callable with no signup. Both are quick to prototype with; rate limits still apply.

Can I call Chronicling America and Parking St.Gallen from the browser?

Only Parking St.Gallen is browser-friendly — it returns CORS headers over HTTPS. Chronicling America needs a server-side call or proxy, so factor that into which one fits a front-end project.

Are Chronicling America and Parking St.Gallen free for commercial use?

Chronicling America allows commercial use on its free tier, and Parking St.Gallen 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.