Local AI Excel Automation for .NET | Spire.Office.EdgeAI.XLS

Free plugin for Spire.XLS for .NET

Local AI Excel Automation for .NET Kept Inside Your Network

Spire.Office.EdgeAI.XLS runs inside Spire.XLS for .NET and applies AI directly to your workbooks—translating, cleaning and hiding data in place. No file export, no upload, and no third-party service ever sees your content.

Explore the Plugin See how it works

100% local & private Runs entirely on your own machine — nothing is uploaded.

Ready out of the box A ready-made model is built in — just install and start processing.

Light on hardware Runs on an ordinary CPU — no high-end hardware required.

◈ Free optional plugin download · Ready-to-use local AI model · Integrates with Spire.XLS for .NET

Check it on real workbooks.

Explore practical examples of how Spire.Office.EdgeAI.XLS processes Excel workbooksEach example shows
a sample file, the exact code that ran on it, and the result it produced.

Translate a sale report into multiple languages while keeping layout

A Chinese workbook goes in. An English one comes out, with headings, sheets and number formats in the same places.

API call

// Translate
var workbook = new Workbook();
workbook.LoadFromFile("input.xlsx");
await workbook.TranslateAsync(TranslateLanguage.English);
workbook.SaveToFile("output.xlsx", ExcelVersion.Version2016);

Input: English.xlsx

Output: multiple languages

Most tools can read a spreadsheet.
Few can edit it while maintaining the format.

Plenty of AI tools can read your sheets, but when it comes to editing—formulas break,
cell types shift, and layout gets ruined. That is exactly what this add-on is built to solve: seamless,
non-destructive editing right inside your spreadsheet.

Only the values change

Everything else—number formats, styling and the sheet's structure—stays exactly as it was.

Speaks spreadsheet natively

Ranges, cells, formulas and tables are treated as real spreadsheet objects, not loose text that gets pasted back in.

No quiet shortcuts

When a task can't be done safely, the add-on tells you, rather than returning a confident but incorrect result.

A full audit trail

The output records what changed, what was skipped and what was dropped, so every edit can be checked and undone.

How Spire.Office.EdgeAI.XLS
fits into Spire.XLS for .NET

A single add-on connects your .NET code to a model running on your own machine,
then adds AI to the Spire.XLS component you already use.

Your environment

Your .NET app

Opens and works with the workbook through Spire.XLS, just as before.

Local AI add-on

One method call sends the open workbook to the model on your own machine. Optional, separate download.

Local AI model

A built-in model runs on an ordinary CPU — no high-end hardware needed — and returns the processed document. 100% local.

100% local private AI · Ready-to-Use AI model · Runs on a standard CPU
· Data Stays on Your Device

What the AI can do
with your Excel files

Every capability below runs locally, inside the same
Spire.XLS component that already holds your workbook.

Translate content,
keep the layout

Translate cell text into another language while tables, headers and formatting stay put.

Hide confidential
values

Hide names, contact details and other sensitive fields before a sheet is shared or exported.

Clean up
messy data

Standardize inconsistent entries before you analyze the data.

Extract structured
fields

Pull specific values (invoice number, dates, amounts…) from a sheet, each with the cell it came from. Read-only, nothing is changed.

And more: New features are added continuously.

Private, local AI for your
sensitive spreadsheets

Payroll, finance and internal trackers are among
the most sensitive files a company keeps.

100% Local, No Upload

The model runs on your own machine or server. Document
content is never sent to an outside AI service.

Ready-made model, runs on CPU

The plugin ships with a ready-to-use model and runs
well on a standard CPU — no high-end hardware needed.

Built for strict environments

Fits enterprise document work with tight information security
rules, where files cannot leave the internal environment.

Cloud AI service

Local AI plugin

Where the file
is processed

On a provider's
servers

On your own
machine or server

What leaves
your network

Your document
content

Nothing —
no upload at all

Who can see
the content

Depends on the
provider's terms

Only you —
100% local

What you need
to run it

Cloud subscription
& GPU
infrastructure

A standard CPU is
enough —
no high-end
hardware needed

Three steps to add
it to your .NET app

If you already open workbooks with
Spire.XLS, you already know most of what's involved.

Install the add-on

Download the local AI add-on and reference it alongside Spire.XLS for .NET.

Set your model path

Pass the location of your local model files; it loads once and stays ready for execution.

Run on any workbook

Call the AI method directly on your active Workbook object, then save as you normally would.

C# example: Translate a workbook into English

using Spire.Xls;
using Spire.Office.EdgeAI;
using Spire.Office.EdgeAI.Xls;
            
var workbook = new Workbook();
workbook.LoadFromFile("input.xlsx");
await workbook.TranslateAsync(TranslateLanguage.English);
workbook.SaveToFile("output.xlsx", ExcelVersion.Version2016);