---
title: Limits and expiry times
description: "Every size limit, time limit, and naming rule in quickS3, in one place, from the largest upload to how long a share link can last."
section: Reference
order: 10
audience: [owner, admin, member, agent-user]
status: published
lastVerified: 2026-09-15
sources:
  - src/objects/organisation.constants.ts
  - src/lib/passwords.ts
  - src/routes/auth-password.ts
  - src/mcp/consent.ts
  - src/mcp/server.ts
  - src/objects/routes/providers.slug-utils.ts
  - src/routes/orgs/organisations.ts
  - web/src/components/app/BucketBrowser.tsx
  - web/src/components/app/CreateBucketDialog.tsx
  - web/src/components/app/bucket-browser/PreviewDialog.tsx
  - web/src/components/app/bucket-browser/TextPreview.tsx
  - wrangler.jsonc
---

These are quickS3's own limits. Your storage provider has limits too, and the smallest one always applies.

## Files

| Limit | Value |
| --- | --- |
| Largest upload, most providers | About 5 TB |
| Largest upload, Azure | 5 GB |
| Largest upload through the backend upload fallback | 100 MB |
| Largest upload from an AI client | 5 GB |
| Files uploaded in parts | Over 256 MB, on every provider except Azure |
| Time to resume an interrupted upload | 7 days |
| Largest browser download | 1 GB |
| Text preview | First 1 MB of the file |
| Table preview (CSV, TSV) | First 200 rows and 50 columns |

An Owner can also set an **Upload size limit** on each connection. It applies to Admins and Members, not to Owners.

## Links and access

| Limit | Value |
| --- | --- |
| Share link lifetime | 1 hour to 30 days, 24 hours by default |
| AI client access | 30, 60, or 90 days, 30 by default |
| AI download link | 5 minutes, works once |
| AI upload link | 15 minutes |
| AI approval page | 10 minutes |
| Audit log | 14 days |

## Accounts

| Limit | Value |
| --- | --- |
| Signed-in session | 30 days |
| Email sign-in link | 15 minutes, works once |
| Email verification link | 24 hours |
| Password reset link | 30 minutes |
| Invitation | 7 days |
| Password length | 10 to 128 characters |
| New organisations | 5 per hour |

## Names

| Name | Rules |
| --- | --- |
| Bucket or container | 3 to 63 characters: lowercase letters, numbers, and hyphens, starting and ending with a letter or number |
| Connection slug | Lowercase letters and hyphens only |
| Folder prefix in a rule | Slashes at either end are ignored; capital letters matter |

Share links can also be created for as little as 5 minutes by AI clients; the web app offers 1 hour and up.