Create a Presentation From Excel or a Spreadsheet
Upload your Excel (.xlsx / .xls) or CSV file and get a structured presentation built from it — no retyping rows of numbers into slides by hand. The part that matters with data is accuracy: Gixo reads figures from your spreadsheet and keeps that source attached to the generation and review path. Verify source-critical numbers before presenting.
The short answer
You have the numbers in a spreadsheet — a metrics export, a budget, a results table — and you need them in a deck. The slow way is retyping each figure into slides, where a single fat-fingered digit becomes a wrong number in front of an audience. AI can do the conversion, but only if it carries your actual figures across rather than approximating them.
Gixo reads your spreadsheet directly: Excel workbooks are parsed cell-by-cell, and CSVs are read as rows and columns. When sources are provided, Lumen keeps uploaded and pasted material authoritative and lets the user choose uploaded-only generation or allow web context. Lumen records generation-time source provenance and keeps citations and source review attached; it does not automatically verify every claim, so human review remains required.
The result is a structured, editable deck you can refine and export — built from your real data, not a plausible-looking version of it.
How to turn a spreadsheet into a deck: Excel to PPT in four steps
When you create a presentation, upload your Excel (.xlsx / .xls) or CSV file as a reference document (you can add a few related files too). Excel workbooks are read cell-by-cell; CSVs are read as their rows and columns.
Keep generation uploaded-only when the sheet must be the sole source, or allow web context while keeping the spreadsheet authoritative.
When source material does not support a specific fact, Lumen instructs generation to omit it or use neutral, non-numeric wording. Reviewers should verify source-critical claims before presenting. Compare source-critical figures with the workbook before presenting.
Tweak the deck in Lumen, then export it using the hybrid PowerPoint path. PowerPoint export is hybrid by design: stable layouts become editable text and shapes, complex slides preserve fidelity as images, and the file opens cleanly in PowerPoint. Before an export runs, a deterministic readiness check inspects every slide and blocks the file when an unresolved placeholder, an unfilled image slot, or a browser-only image would otherwise ship unfinished, while fidelity trade-offs are surfaced as warnings rather than applied silently.
Why this matters more for data than for anything else
A deck built from a topic can be vague and still be useful. A deck built from a spreadsheet can't — its whole reason to exist is the numbers, and a wrong one undermines the entire thing. That's why the conversion has to be faithful: the figure on the slide should be the figure in your cell, full stop.
Source provenance makes the review path visible, but it is not automatic claim verification. For a results review, board update, or investor deck, compare source-critical numbers with the workbook and correct the working deck before handoff.
How an AI slide generator turns a spreadsheet row into a chart
The reason most AI slide generators produce weak data decks is that they ask a language model to invent the chart. That is the wrong job for a model: it will produce numbers that read correctly and plot wrongly. Lumen splits the two. The model may request a chart for a slide; it never supplies the data.
Each chart request is then resolved against the tables that actually exist in your uploaded source material. The match is structural — the request is normalised and tested against the label the table sits under — not a similarity score, so when a chart picks a table there is a one-line answer for why it picked that one. The values are then drawn by a deterministic renderer from the matched table.
The important behaviour is what happens when nothing matches. A chart request that resolves to no table does not get filled with plausible numbers, and it does not ship as an empty placeholder either — the slide is removed before the deck is topped back up to length. A reader is better served by a missing module than a broken one.
That is the practical difference between a deck built from your workbook and a deck written about your workbook. It does not remove the review step: compare source-critical figures against the sheet before you present.
Frequently asked questions
Updated