JSON Viewer was built to solve a simple, well-known problem: viewing and formatting JSON — without the hassle of ads, trackers, cookies, or third-party scripts. No account required. No data harvesting. Just a clean, fast tool that does what it says.
Most online JSON tools are cluttered with advertising and tracking. We wanted something we could trust with sensitive data — so we built it ourselves and made it available to everyone.
When you share JSON via the Share feature, your data is encrypted entirely in your browser using AES-256-GCM before anything leaves your device. The encryption key is derived from your chosen password using PBKDF2 with a random salt. The server only ever receives and stores encrypted, unreadable data — it has no access to your content or your key.
We cannot recover your data. We cannot retrieve your encryption key. If you lose the key, the data is gone. The responsibility is yours.
Shared encrypted data is stored temporarily in Azure Blob Storage. Automatic cleanup runs regularly — do not rely on shared links being available beyond a few days. This is not a storage service. If you need to keep the data, save it locally.
This tool is provided free of charge and as-is, with no warranties or guarantees. Fair use is encouraged — please don't abuse it. If everyone plays nice, it stays free for everyone.
Got ideas for improvements, found a bug, or just want to tell us it's all rubbish? Write to json@swphub.dev.