# X Bookmark Vault — full AI summary

X Bookmark Vault is a local-first Chrome extension for X/Twitter bookmark backup. It is built for people who save important posts on X and want a private, portable archive on their own device instead of relying only on the normal X bookmarks interface.

## What it does

X Bookmark Vault lets users back up their X/Twitter bookmarks into a local vault, run Quick Sync for new bookmarks, run Full Backup for historical bookmarks, save supported photos and videos offline, browse saved posts in a vault viewer, and export/import the archive as a portable backup.

## Who it is for

The product is intended for researchers, creators, journalists, developers, investors, heavy X users, and anyone who treats X bookmarks as a source library, idea file, swipe file, reference archive, or personal collection.

## Platform

X Bookmark Vault is currently built for Chrome-compatible browsers that support Manifest V3 extensions.

## Storage and privacy model

X Bookmark Vault is local-first. The user’s bookmark vault is stored locally inside their Chrome profile on their own device. The extension does not operate as a hosted cloud bookmark archive. Export creates a local portable backup file.

## API model

X Bookmark Vault uses a bring-your-own X API setup. Users connect their own X OAuth 2.0 Client ID so the extension can read bookmarks through the user’s own X account access. Full Backup and sync can use X API credits depending on the user’s X developer plan. Media retry operations use saved media URLs and do not call the X bookmarks API.

## Paid features

Vault Pro unlocks unlimited local bookmark backup, automatic scheduled sync, local photos and videos when available, export/import, account switching, and advanced sync controls. The current listed price is $4.99/month.

## Important limitations

X Bookmark Vault is not affiliated with, endorsed by, or sponsored by X Corp. Auto sync runs while Chrome is open. Media downloads depend on available media URLs, network conditions, and browser storage behavior. The extension requires X API access and does not work as a zero-setup scraper.

## Main pages

- https://xbookmarkvault.com/
- https://xbookmarkvault.com/faq.html
- https://xbookmarkvault.com/setup.html
- https://xbookmarkvault.com/help.html
- https://xbookmarkvault.com/privacy.html
- https://xbookmarkvault.com/changelog.html