Show HN: Zither – paste JSON/CSV/a spreadsheet table, stats instantly, no AI Zither, a new browser-based tool, lets users paste JSON, CSV, or spreadsheet tables to instantly compute statistics without uploading data or using AI. All processing happens locally in the browser, ensuring no data is sent anywhere. no upload · no storage · no AI zither /ˈzɪð.ər/ · ZITH-er Paste JSON, CSV, or a table copied from a spreadsheet. Stats appear instantly, computed right here in your browser — nothing is sent anywhere. paste something to begin feedback or a message for me Thanks — got it.