CSV Guides & Tutorials
Practical, step-by-step answers to the most common CSV problems. Every guide pairs with a free tool that runs privately in your browser.
How to Open a 500MB+ CSV File Without Crashing Excel
Inspect, search, and page through massive gigabyte-scale datasets with zero browser lag or memory crashes.
Excel Cannot Open More Than 1,048,576 Rows: 3 Fixes
Why Excel truncates rows at 1,048,576, and how to safely split or inspect files to prevent data loss.
How to Split a Large CSV File Without Excel
Excel chokes past 1,048,576 rows. Here is how to split any large CSV in seconds, free and offline.
How to Change CSV Delimiter (Semicolon to Comma or Tab)
Fix regional European Excel exports, convert delimiters safely, and preserve UTF-8 accent characters.
How to Split a CSV by Column Value
Create one file per country, category or customer automatically from a single CSV.
How to Merge Multiple CSV Files Into One
Combine many CSV exports into a single clean file, even when columns differ.
How to Remove Duplicate Rows From a CSV
Clean duplicate contacts, orders or records from a CSV, by whole row or specific columns.
How to Convert CSV to JSON (and Back)
Turn spreadsheet exports into API-ready JSON in one click, no coding required.
How to Convert CSV to Markdown Table for GitHub & Docs
Generate aligned GitHub-flavored Markdown tables from spreadsheet data with instant copy and download.
How to Convert CSV to XML (and XML to CSV) Free Online
Transform flat tabular records into structured XML nodes for ERPs, feeds, and configurations.