CSV Editor
CSV Editor is a free tool for inspecting, cleaning, deduplicating and exporting CSV files in your browser.
Your data never leaves your device.
No account, no upload. Free with generous in-browser limits.
Open a CSV file
Drag and drop a .csv, .tsv or text file here or browse for one. Your file is read locally and never uploaded.
Try a 100 MB file, not just small ones. Large files open in streaming mode.
Streaming mode: browsing, filtering, sorting, analysis and export are available. Editing cells and transformations are disabled for very large files.
CSV Editor processes every file locally in your browser. Nothing is uploaded or stored. Sessions are saved in your browser only. Anonymous page views are counted.
Need fuzzy matching for messy duplicates?
CSV Editor flags exact and near-duplicate rows. For full fuzzy matching, phonetic matching and AI-powered reconciliation inside Google Sheets, try Flookup Data Wrangler.
Try Flookup Data Wrangler