Custom Codebook

Create your own secret codes and personal cipher dictionary. All data is stored locally in your browser for privacy.

Your data is stored locally and never uploaded

How to Use

Create Entries

Add keywords or codes with their meanings. Morse code is automatically generated for each entry.

Play & Learn

Click the play button to hear the Morse code sound for any entry. Download as audio file for offline practice.

Import & Export

Export your codebook to CSV for backup. Import CSV files to restore or share with others.

Share Codes

Share individual entries with friends via social media or copy to clipboard.

Edit Anytime

Click the edit button to modify any entry. Update keywords, meanings, or fix typos easily.

Secure & Private

All your data stays in your browser. Nothing is uploaded to any server - your codes remain truly secret.

Add New Entry

My Codebook(0)

Your codebook is empty. Add your first entry above!

What is a Morse Code Codebook?

A Morse code codebook is a personal dictionary that maps your custom words, phrases, or secret codes to their Morse code equivalents. Historically, codebooks were essential tools for telegraph operators and military communications, allowing them to quickly encode and decode messages. Our digital codebook brings this timeless concept into the modern era, allowing you to create, store, and practice your own personalized Morse code vocabulary.

Why Create Your Own Codebook?

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Personalized Learning

Create entries for words you use frequently or want to memorize. This personalized approach accelerates your Morse code learning by focusing on relevant vocabulary.

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Secret Communication

Build a private cipher dictionary with friends or family. Use code words that only you and your contacts understand for fun, private messaging.

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Practice Tool

Each entry includes audio playback, helping you practice listening recognition. Download audio files for offline practice anywhere, anytime.

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Complete Privacy

All data is stored locally in your browser. Nothing is uploaded to any server, ensuring your codes remain truly secret and private.

Creative Uses for Your Codebook

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Emergency Preparedness

Store essential phrases like 'Need Help', 'Safe', 'Location' in Morse code for emergency situations when other communication fails.

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Ham Radio Practice

Amateur radio operators can build a vocabulary of common QSO phrases, callsigns, and frequently used terms for quick reference.

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Educational Games

Teachers can create vocabulary lists for students, turning Morse code learning into an interactive classroom activity.

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Jewelry & Crafts

Design Morse code bracelets, necklaces, or artwork. Store names, dates, and meaningful phrases to reference when creating personalized gifts.

The History of Morse Codebooks

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Codebooks have been integral to Morse code communication since its invention in the 1830s. Commercial telegraph companies developed extensive codebooks to reduce transmission costs by substituting long phrases with short codes. During wartime, military codebooks were highly classified documents, with nations constantly developing new codes and attempting to break enemy ciphers. The famous Zimmermann Telegram of 1917, decoded using diplomatic codebooks, changed the course of World War I. Today, while technology has evolved, the concept of personal codebooks lives on in our digital tool, preserving this rich tradition for a new generation.