zendesk/cross-storage

Health v2 · maintenance only

Adoption not part of the score

2219 stars · 176 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded

A JavaScript library enabling cross-domain local storage sharing with per-origin permissions. It uses a hub-and-client architecture with embedded iframes and postMessage, exposing a promise-based API.

Use cases

• share localStorage across subdomains
• replace shared root-domain cookies with larger client-side storage
• let multiple browser tabs on different domains access one data store
• store session data client-side without bloating request headers
• control which domains can read or write shared storage

When to choose

• you need to share client-side data across multiple domains or subdomains
• you want to avoid cookie size limits and header overhead
• you need fine-grained per-origin permissions on storage access

When to avoid

• you only need same-origin storage (use localStorage directly)
• you need server-side shared state or strong data integrity guarantees
• your target browsers lack iframe postMessage support

Facets

library · maturity maintenance

caching security http-client web-development frontend privacy browser localstorage cross-domain iframe postmessage promises javascript

Member repositories

For agents

markdown · JSON · MCP: product_card(name="zendesk/cross-storage")