CSV.
Done right.
Open any CSV — free, in your browser, on any device. Edit, save, sync & AI-clean it for $9.99/mo. The opposite of bloated spreadsheets.
- Free to view
- No watermark
- No file size tax
- Works offline
| name | plan | mrr | ||
|---|---|---|---|---|
| 1 | Aria Chen | aria@studio.io | pro | 29.00 |
| 2 | Niko Park | niko@labs.dev | team | 99.00 |
| 3 | Sam Webb | sam@maker.cc | pro | 29.00 |
| 4 | Lex Rios | lex@solo.app | free | 0.00 |
| 5 | Mira Kahn | mira@pixel.io | team | 99.00 |
| 6 | Dee Olu | dee@ship.fm | pro | 29.00 |
Everything you need.
Nothing you don't.
We obsessed over one thing: making CSVs feel as fast and friendly as a notepad. No bloated grid libraries, no sluggish spreadsheets. Just your data, instantly.
Lightning fast
Opens 100k-row CSVs in milliseconds. No spinners. No bloat. Pure speed.
Edit & save
Click any cell, edit inline, add/remove rows & columns, save back as clean CSV.
Any device
Phone, tablet, laptop — works in any browser. No install required.
Download anywhere
Export your edits as a fresh CSV in one click. Your data stays your data.
Private by default
Your files load locally in your browser. Optional cloud save when you want it.
Free to view
Open any CSV instantly — no signup, no card, no payment. Pay $9.99/mo only if you want to edit & save.
Everything CSV. In one place.
We wrote plain-English guides to every CSV question we kept getting asked — what they are, how to open them, how to edit them, when to use them instead of Excel. Browse the topics or skip straight to the editor.
- / hubCSV Viewer
Open any CSV file instantly in your browser.
Read - / featureCSV Editor
Edit CSV files inline — no spreadsheet bloat.
Read - / basicsWhat Is a CSV File?
CSV explained simply, with examples.
Read - / how-toHow to Edit CSV Files
Step-by-step guide to editing CSV files.
Read - / comparisonCSV vs Excel
When to use which format — full breakdown.
Read - / guideCSV Use Cases
Real-world ways people use CSV files.
Read - / featureLightweight CSV Editor
Why lightweight beats bloated software.
Read - / featurePrivacy-Focused CSV Viewer
Your files never leave your browser.
Read - / featureFast CSV Viewer
Open large files in milliseconds.
Read
Built for everyone CSV touches.
Marketers
Clean email lists, fix audience exports, deduplicate before launching campaigns.
Developers
Preview API exports and database dumps before piping data into the next system.
Ecommerce sellers
Bulk-update prices and stock for Shopify, WooCommerce, Amazon, Etsy.
Operations & finance
Edit accounting exports, fix vendor names, recategorise expenses fast.
Students & researchers
Open public datasets and tweak survey results without firing up SPSS.
AI & data teams
Inspect training data and fine-tuning sets without breaking encoding.
Privacy-first
Your CSV files load and edit locally in your browser. We never read your data, never sell it, never train on it.
How privacy works →Lightning fast
A streaming parser and virtualised table render 100,000 rows in under a second on a phone.
See the benchmarks →Any device
Works in any modern browser. Native iOS and Android apps coming soon. Your account works everywhere.
See Pro plans →Plain-English guides.
Free to view.
$9.99 to edit.
Anyone can open and view CSVs in OpenCSV — that's free, no card. Edit, save, share with edit permissions, and run the export presets with Pro. Start with a 14-day free trial, no card up front. Cancel anytime, 30-day money-back.
- Edit unlimited CSVs
- Save to cloud across devices
- All 9 export presets
- Share with edit permissions
- AI features (coming soon)
- Cancel anytime · 30-day refund
Common questions about CSV & OpenCSV
- A CSV file is a plain text file used to store tabular data in rows and columns, with values separated by commas. CSV stands for Comma-Separated Values. It's one of the simplest and most widely supported data formats in the world.