# Upload Your First Deck to SlideStage Pro

This tutorial shows how to upload a verified `.stage` file to SlideStage Pro.

## Prerequisites

- A running SlideStage Pro instance.
- A signed-in user account.
- A valid `.stage` file.

## 1. Sign in

Open the Pro login page and sign in with your email and password.

If you do not have an account, ask an admin for an invite link.

## 2. Open the upload page

Choose the deck upload entry point.

The form accepts:

- A `.stage` file.
- An optional title override.

If no title is provided, Pro uses the manifest title.

## 3. Upload

Submit the file. Pro will:

1. Check size.
2. Compute SHA-256.
3. Load the archive with `@slidestage/core`.
4. Validate the manifest.
5. Check package paths.
6. Store the blob.
7. Create deck and version records.

## 4. Review the detail page

Check title, slide count, current version, and playback.

## 5. Playback acceptance

Open the viewer and verify slide navigation, notes, annotations, and persistence.

If Lite cannot open the package either, fix and repack the source deck first.

## Common errors

- `INVALID_STAGE_ZIP`: not a readable `.stage` archive.
- `INVALID_MANIFEST`: manifest does not match the schema.
- `UNSAFE_PATH`: package path is unsafe.
- File too large: check `UPLOAD_MAX_BYTES`.