Encrypt CSV
Encrypt a CSV file and hide information in it. Runs entirely in your browser, so your data never leaves your device.
0 chars · 0 lines
Output
The result appears here as you type.
How to use Encrypt CSV
- 1. Paste your CSV. Drop the comma-separated rows into the input pane, entirely in your browser, since encryption only protects data that never left your machine unencrypted in the first place.
- 2. Set a password. Enter a password in the Password field. It's used to derive an AES-256-GCM encryption key, so a longer, less guessable password gives the resulting ciphertext stronger protection.
- 3. Copy the encrypted output. Copy the resulting ciphertext, prefixed with the escsv1 marker, and store or share it. Only someone with the matching password can turn it back into readable CSV using Decrypt CSV.
When to use Encrypt CSV
Encrypt CSV locks a CSV file's contents behind a password using AES-256-GCM, turning readable rows into unreadable ciphertext that only Decrypt CSV with the correct password can reverse. It runs entirely in your browser, so the plaintext never has to leave your machine.
- Sending sensitive data over an insecure channel. You need to email a CSV of account details but can't guarantee the email itself is secure. Encrypting it first means an intercepted message reveals nothing without the password.
- Storing a backup of confidential records. You keep a personal backup of financial or medical data in CSV form and want it unreadable if the storage location is ever compromised.
- Sharing credentials or API keys as structured data. A CSV lists API keys or access tokens for a small team. Encrypting it before sharing means only teammates with the password can actually read the values.
Examples
AES-256-GCM, key derived from your password
Input
name,age Ada,36
Output
escsv1:2Yy1nq…kA== (only Decrypt CSV with the password gets it back)
About the Encrypt CSV tool
Encrypt CSV does its work locally, right in the browser. Encrypt a CSV file and hide information in it. There is no upload step, no queue and no account, and your data never travels over the network.
It belongs to the CSV Tools collection on EditSafely, a set of 133 small, focused CSV utilities that share the same instant, private workspace.
You can shape the output with the Password setting, and the result refreshes the moment you change it. A worked example further down the page shows exactly what the tool produces for a real input.
Running locally also makes the tool fast and dependable: results appear as you type or drop a file, there is no server outage that can take it down mid-task, and confidential data can be processed without a second thought.
Frequently asked questions
Is Encrypt CSV free to use?
Yes, it is completely free. All 2,658 tools on EditSafely work without an account, a subscription or usage limits.
Is it safe to paste sensitive or confidential data?
Everything happens locally. Your browser downloads the tool's code once, then does all the processing itself; nothing you enter is transmitted, stored or logged. You can even go offline after the page loads and it will still work.
How much text can I process at once?
There is no fixed limit. Because the work happens on your own device rather than on a shared server, the practical ceiling is your machine's memory, which comfortably handles inputs far larger than typical online tools allow.
Do I need to sign up or install anything?
No. The tool works in any modern browser on desktop, tablet or phone. There is no account to create, no extension to add and no software to install.
How do I use the result?
The output panel has a one-click copy button, and you can keep refining the input while you work; the result updates in place as you type.