Online XLS Editor

The tool enables in-browser editing of Excel workbooks by accepting XLS/XLSX uploads and rendering a grid view for cell-level edits. It supports basic formula evaluation, data validation, simple sorting and filtering, and locale-aware formatting with exports back to XLSX or CSV. This is designed for analysts, operations teams, and educators who need rapid edits without desktop software. Conceptually, the system parses workbook structure, maps cells to values, and recalculates dependent formulas when changes occur, maintaining parity with familiar Excel semantics for common functions. Security and processing are performed server-side with ephemeral storage, ensuring that the original file remains untouched unless explicitly exported after edits. Unique value comes from a lightweight, accessible browser-based workflow that preserves workbook integrity while enabling quick data corrections, template updates, and portable exports for sharing with colleagues. Core features include multi-sheet support, cell editing, basic arithmetic and functions (SUM, AVERAGE, IF), data validation retention, and export to XLSX or CSV. Use cases include updating budgets, cleaning datasets, adjusting templates, or preparing workbook-ready assets for stakeholders without installing software.