Decrypt CSV
Decrypt a previously encrypted CSV file and make it readable. Runs entirely in your browser, so your data never leaves your device.
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Output
The result appears here as you type.
How to use Decrypt CSV
- 1. Paste the encrypted CSV. Paste the escsv1-prefixed ciphertext produced by Encrypt CSV into the input pane. Nothing decrypts until the matching password is supplied in the next step.
- 2. Enter the password. Type the exact password that was used to encrypt the file into the Password field. Any mismatch, even a single character, will fail to produce readable output.
- 3. Copy the decrypted CSV. Copy the plain, readable comma-separated rows recovered from the ciphertext and use them as you would any normal CSV export.
When to use Decrypt CSV
Decrypt CSV reverses AES-256-GCM encryption on a file produced by Encrypt CSV, turning ciphertext back into readable rows when you supply the correct password. It's the counterpart step for opening a CSV that was locked down for safe storage or transfer.
- Reading a password-protected data backup. You previously encrypted a backup of sensitive records and now need to access it again. Entering the password recovers the original CSV without any special software.
- Opening a file received over email. A colleague sent you an encrypted CSV and shared the password separately for safety. Decrypting it here gets you back to the plain data ready to open in a spreadsheet.
- Verifying an encryption workflow before deployment. You're testing that a script correctly encrypts and decrypts CSV exports as part of a data handling process, and want to confirm the round trip produces identical data.
Examples
Back to plain CSV
Input
escsv1:2Yy1nq…kA==
Output
name,age Ada,36
About the Decrypt CSV tool
Decrypt CSV does its work locally, right in the browser. Decrypt a previously encrypted CSV file and make it readable. 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 Decrypt 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.