OmniCastCONVERTER
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Only workspace IDs are saved in this browser—never files or input.
LOCAL TOOL / SECURITY

TOTP & HOTP Generator

Secrets are used only for the current run and are never stored or transmitted.

Options
Time-based or counter-based OTP.
HMAC algorithm used by the token.
Length of the displayed code.
Seconds per TOTP window.
Counter used in HOTP mode.
Optional 6–8 digit code checked against the current value.
Runs locally in this browserNothing is uploaded. Passwords are stored only when you explicitly choose Remember on this device.
02
Tool outputThe current one-time password, counter, remaining time, and optional verification result.
Run toolNothing is uploaded. Passwords are stored only when you explicitly choose Remember on this device.
About this utility

How to use TOTP & HOTP Generator

Generate or verify RFC 4226/6238 one-time passwords from a Base32 secret entirely in memory.

What to provide

Secrets are used only for the current run and are never stored or transmitted.

  1. Paste, type, or drag and drop a supported text file into the input area.
  2. Choose the options that match your intended result.
  3. Select “Run tool” or press Ctrl/Command + Enter, then copy, download, or move the result back into the first input for another pass.

What the result means

The current one-time password, counter, remaining time, and optional verification result.

Privacy and safety

This utility is loaded as browser code and processes your input only in this tab. OmniCastConverter has no upload endpoint and never stores your content, filenames, tokens, or secrets. Generated markup and code are shown as inert text and are never executed.

Limitations

  • Protect the secret like a password. Clock synchronization and secure provisioning are required for real authentication.

Try the included example

Select “Load example” at any time to restore this tested sample.

JBSWY3DPEHPK3PXP
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Related security & ids tools

JWT Decoder & InspectorOpen tool →JWT HS256 SignerOpen tool →JWT HS256 VerifierOpen tool →Hash GeneratorOpen tool →