What Can You Do With an Online Spreadsheet Editor?

"Online spreadsheet editor" can mean anything from a glorified grid to something that genuinely replaces desktop spreadsheet software for everyday work. Here's a capability-by-capability look at what's actually possible, using JTDesigner's Spreadsheet Studio as the reference.

Formulas

A real formula engine with roughly 80 functions across math, statistics, logical, lookup and text/date categories, including VLOOKUP, XLOOKUP and INDEX/MATCH, with automatic recalculation as you edit.

Formatting

Fonts, colors, borders, fills, alignment, number formats (currency, percent, scientific, date, custom), and freeze panes to keep headers visible while scrolling.

Conditional formatting

Rules based on cell values, plus color scales and data bars — the kind of at-a-glance visual highlighting that makes a spreadsheet easier to read at scale.

Charts

Column, bar, line, area, pie, donut and scatter charts, bound directly to a data range so they update as your data changes.

Named ranges

Define a named range scoped to a single sheet or the whole workbook, so formulas can refer to it by name instead of a raw cell reference — useful once a workbook has more than a couple of sheets.

File compatibility

Import .xlsx and CSV files, and export back to either format, or to JTDesigner's portable JTProject format. Multiple sheets, formulas, and formatting are preserved on import where supported.

Where JTDesigner fits

Spreadsheet Studio is one of JTDesigner's seven browser-based Studios — all sharing the same local-first workflow and JTProject portability.