myhasher
A simple desktop tool to normalize and hash customer data
using SHA-256.
myhasher works with CSV / TXT files and helps prepare
email addresses and phone numbers for privacy-safe
data processing.
No data leaves your computer. All processing is performed locally.
What it does
- Reads CSV / TXT files
- Automatically detects likely email and phone columns
- Normalizes input data before hashing
- Hashes data using SHA-256
- Creates a new output file without modifying the original file
Why it is useful
Customer data often needs to be normalized and hashed before
it can be used in advertising or data workflows.
Instead of using spreadsheets, scripts, or manual steps,
myhasher provides a simple local workflow:
Load a CSV file → review the detected data → run the process.
Key points
- No coding required
- No account required
- No data upload
- Original files are not modified
Current scope
myhasher currently supports:
- Email normalization and SHA-256 hashing
- Japanese phone number normalization
- JP_DIGITS mode
- E164_JP mode
Phone number normalization is currently designed for Japanese domestic numbers.
Who it is for
- Marketing teams
- Advertising operators
- CRM / customer data teams
- Anyone who needs a simple local hashing workflow
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