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VaultNote – Local-first encrypted note-taking in the browser

VaultNote – Local-first encrypted note-taking in the browser

Mar 7, 2026 Developer Tools

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VaultNote – Local-first encrypted note-taking in the browser

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Hi HN,I built VaultNote, a local-first note-taking app that runs entirely in the browser.Key ideas:- 100% local-first: no backend or server - No login, accounts, or tracking - Notes stored locally in IndexedDB / LocalStorage - AES encryption with a single master password - Tree-structured notes for organizing knowledgeThe goal was to create a simple note app where your data never leaves your device. You can open the site, enter a master password, and start writing immediately.Since everything is stored locally, VaultNote also supports import/export so you can back up your data.Curious to hear feedback from the HN community, especially on:- the security approach (local AES encryption) - IndexedDB storage design - local-first UX tradeoffsDemo: https://vaultnote.saposs.comThanks!

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