B BLUESKY LABS

Privacy & Crypt Suite

How to Securely Encrypt Files and Text with AES-256 GCM

Learn how to use the AES-256 File & Text Encrypter to protect your sensitive data locally in your browser without uploading information to a server.

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Updated 2026-06-07. Bluesky Labs tools are designed for browser-local workflows whenever the tool supports local processing.

When to Use This Tool

  • Encrypting private text messages or passwords before sharing them.
  • Securing personal documents and PDF files for offline storage.
  • Protecting sensitive company data using client-side AES-256 GCM encryption.

Step-by-Step Workflow

  1. Open the tool

    Navigate to the AES-256 File & Text Encrypter tool on the Bluesky Labs Privacy & Crypt Suite.

  2. Enter inputs

    Choose between the 'Text' or 'File' tab depending on your data type.

  3. Load your file

    Enter your plain text or upload the file you wish to secure.

  4. Enter inputs

    Input a strong, unique encryption key or password into the provided field.

  5. Run the action

    Click the encrypt button and download or copy the resulting encrypted output.

Best Practices

  • Use a long, complex passphrase containing symbols, numbers, and mixed-case letters.
  • Never share your encryption key with anyone; losing it means you cannot recover your data.
  • Always verify that your browser's 'Private' mode is active for an extra layer of local privacy.
  • Delete the original unencrypted file from your device immediately after successful encryption.

FAQ

Does my data get sent to a server during the encryption process?

No, all encryption and decryption processes happen locally within your browser; no data ever leaves your machine.

What is AES-256 GCM and why is it secure?

AES-256 is a military-grade standard of encryption, and the GCM mode provides both confidentiality and data integrity to ensure your files haven't been tampered with.