How to convert Html to Csv

HTML to CSV Conversion Guide

Overview
Converting HTML tables or structured markup into CSV files lets you extract tabular data for analysis, import into spreadsheets, or feed downstream systems. The Sheetize HTML Converter for .NET supports a direct transformation from HTML (or MHTML) to CSV while preserving cell values, data types and basic formatting.

Supported Formats

  • Input: Html or MHtml (any HTML document containing <table> elements).
  • Output: Csv (comma‑separated values). Other supported destinations include Xlsx, Json, Xml, Tsv, etc.

Step‑by‑Step Workflow

  1. Create Load Options – Point the converter to the source HTML file.
  2. Configure Save Options – Set SaveFormat to FileFormatType.Csv and optionally specify a delimiter, encoding, or whether to include header rows.
  3. Run the Process – Invoke HtmlConverter.Process(loadOptions, saveOptions); the programme parses the HTML tables and writes a CSV file.

Sample Code (C#) 

using Sheetize;

// Load the HTML document
var loadOptions = new LoadOptions
{
    InputFile = @"D:\Report.html", // Html or MHtml source
};

// Define CSV output settings
var saveOptions = new HtmlSaveOptions
{
    SaveFormat = FileFormatType.Csv,
    OutputFile = @"D:\Report.csv",
};

// Perform the conversion
HtmlConverter.Process(loadOptions, saveOptions);

Tips & Best Practices

  • Table Structure – Ensure each <table> has a <thead> for column headers; otherwise the converter will treat the first row as data.
  • MHTML Support – If the source is an MHtml archive, provide the .mht file path; the converter extracts the embedded HTML automatically.

When to Use HTML → CSV

  • Scraping web‑page reports that are delivered as HTML tables.
  • Converting e‑book content (ePub, AZW3) that contains tabular data into CSV for analytics.
  • Archiving legacy HTML dashboards into a lightweight, import‑ready format.

Further Reading

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