DataForge
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Row 4,182 has an extra comma. Two rows share the same ID. Half the dates read 03/12/2024, the rest read 2024-03-12. CSV Studio Pro finds all of it, and lets you fix it before it becomes someone else's problem.
Import, table, clean, validate, transform, convert — one workflow, not six separate tools.
Bring in CSV or TSV files, browse or drag-and-drop, and preview the real data before you commit to anything.
Filter, sort, hide columns, and edit cells directly in a full data table — with undo and redo throughout.
Trim whitespace, drop blank or duplicate rows, normalize casing and quotes, strip invisible characters, standardize dates.
Flags missing required values, duplicate IDs, malformed emails, ambiguous or invalid dates, and out-of-range enum values — with a fix suggested for each.
Rename, reorder, remove, merge, split, and compute columns, extract values, nest into JSON structures, or group rows.
Save a sequence of clean/validate/transform/convert/export steps as a workflow and run it across many files.
No subscription, no tiers to compare every year, no account to manage. Start free, pay once through Paddle if you upgrade.
£0
Open, clean, validate, transform, and export CSV/TSV files locally — the everyday toolkit, no card required.
£29 once, via Paddle
Everything in Free, plus the power tools for reshaping data and running the same job across many files.
Free and Pro are the same download — buy Pro and a license key unlocks the full toolkit in the same app, no reinstall needed. Purchases are processed securely by Paddle; there's no separate account or login for CSV Studio itself.
An AI coding agent (Claude Code, Claude Desktop, or anything else that speaks MCP) can drive the same engine the desktop app uses, straight from the command line — inspect a file, clean it, validate it, transform it, convert it, or batch-process a folder.
claude mcp add csv-studio -- node /path/to/csv-studio/mcp/server.js
Free-tier tools work with no license; Pro-gated tools (batch conversion, the reshaping transforms, custom validation rules) check the same license as the desktop app.
Windows. It's a desktop app installed from a setup file and runs offline once installed.
No. Every operation — cleaning, validation, conversion — runs locally on your computer. Files are never sent to DataForge Tools or any third party.
Your license key arrives by email right after checkout, with an Activate button that unlocks the app automatically if it's already installed. Prefer to do it by hand? Paste the key into Settings → License instead. Either way, there's no separate account or activation server.
No hard limit — CSV Studio streams large files in chunks rather than loading everything into memory at once, so it stays responsive on files well beyond what Excel can comfortably open.
Nested objects flatten to dot-notation columns (e.g. address.city), and arrays join into a single delimited cell. Going the other way, the JSON export's "Nested" structure mode reverses that automatically for columns already using dot notation.
Yes. £29 once via Paddle for CSV Studio Pro. No recurring billing, no seat renewals.
Yes. Buy the Pro license from the pricing section above whenever you're ready — checkout opens right here, no separate storefront to visit.
Head to Recover your license and enter the email you paid with plus the transaction ID from your Paddle receipt — we'll re-send the license email straight away.
One-time purchase. Runs locally. No account required.
Get CSV Studio Pro