How to Convert an XLSX to JPG

How to Convert an XLSX File to a JPG Image

Sheetise provides a simple, high‑performance API that lets you turn an Excel workbook (.xlsx) into a high‑quality JPG picture. This is ideal for generating thumbnails, embedding spreadsheets in web pages, or creating visual reports without exposing the original data.

Why Use Sheetise for XLSX‑to‑JPG Conversion?

  • Full fidelity – preserves cell formatting, colours, charts, and images.
  • Fast & scalable – optimised for .NET, works on Windows, macOS and Linux.
  • Customisable resolution – set horizontal and vertical DPI to match your needs.
  • Zero‑dependency – no external tools or Office installations required.

Getting Started

Add the Sheetise.ImageConverter package to your .NET project (via NuGet) and call the ImageConverter.Process method.

Sample C# Code 

using Sheetise;

var loadOptions = new LoadOptions
{
    // Path to the source XLSX file
    InputFile = @"D:\Reports\Financials.xlsx"
};

var saveOptions = new ImageSaveOptions
{
    // Desired output file – JPG extension selects the JPEG format
    OutputFile = @"D:\Reports\Financials.jpg",

    // Optional: control image resolution (DPI)
    HorizontalResolution = 150,
    VerticalResolution = 150,

    // Optional: JPEG compression quality (0‑100)
    // Quality = 90
};

ImageConverter.Process(loadOptions, saveOptions);

The snippet loads Financials.xlsx and writes Financials.jpg using the specified resolution (and optional quality setting).

Key Options for JPG Output

  • HorizontalResolution / VerticalResolution – define the DPI; higher values produce clearer images at the cost of a larger file size.
  • Quality (if supported) – JPEG compression quality from 0 (maximum compression) to 100 (best quality).

Best Practices

  1. Use at least 150 DPI for printable graphics; 72 DPI is sufficient for web thumbnails.
  2. If the workbook contains large charts, increase the DPI to avoid pixelation.
  3. Open the generated JPG in an image viewer to verify appearance before distribution.
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