Show HN: Delightful Cells – reliable AI batch processing for spreadsheets

A new browser-based tool called Delightful Cells launched via Show HN to provide reliable AI batch processing for spreadsheets, accepting .xlsx, .xls, or .csv files without an Excel add-in. Delightful Cells retries failed batches automatically, preserves completed rows, and lets users rerun only the rows that failed, with filtering, replacing, and calculations running locally while only selected cell content is sent to AI. The tool uses one-time credits that never expire rather than a subscription.

Upload an Excel or CSV, describe what each row needs, and get a complete result. Failed batches are retried automatically, completed rows are preserved, and you can rerun only the rows that failed. .xlsx, .xls, or .csv — works in your browser, with no Excel add-in. Filtering, replacing, and calculations run locally. AI sends only the selected cell content for processing. or ✨ AI jobs run in reliable batches with automatic retry and partial-result recovery. One-time credits, no subscription, and credits never expire. The classic tools each do exactly one thing — no chat, just upload and go.