Software | Diary of Joy and Shine

Diary of Joy and Shine_

<Software / Released Applications>

JoyShine Medical Calculator

A handy Windows calculator that combines a standard arithmetic calculator with hundreds of medical calculation modes across 28 specialty categories: anthropometry, cardiovascular risk, emergency triage, critical care / ICU, trauma, toxicology, infectious disease, hepatology, gastroenterology, pulmonary, neurology, rheumatology, hematology & oncology, pharmacokinetics, nursing assessment, drug dosing, comorbidity / prognosis, substance use, anesthesia & pain, obstetrics, rehabilitation / functional status, dermatology, and more.

Runs as a single-executable on Windows 7 SP1 through Windows 11. No installer, no .NET, no Visual C++ Redistributable required.

JoyShine File Seeker

Fast content search across large numbers of files. Performs keyword and regular-expression searches over text files, Office documents (Word/Excel/PowerPoint), PDFs, and DICOM patient metadata, with file-format detection by content (not extension) and optional MD5/SHA-256 forensic hashing.

Runs as a single-executable on Windows 10/11 (64-bit). No installer, no additional runtime required.

JoyShine Notebook (with AES Security)

A powerful, encryption-secured notebook for Windows. The encryption key is derived from your password by Argon2id, and the whole notebook is encrypted as a single AES-256-GCM vault. Because one authentication tag covers the entire file, any tampering is detected the moment you open it. No additional runtime is required - just copy the executable and the program runs on its own.

Runs as a single-executable on Windows 7 SP1 through Windows 11 (x64). No installer, no .NET, no Visual C++ Redistributable required.

JoyShine File Eraser

A single-executable overwrite tool for files and folders. Goes beyond standard delete by overwriting the data region first, with 9 selectable algorithms (NIST SP 800-88 Rev.2 random single-pass through Gutmann 35-pass), Wipe Free Space, and SSD detection warning.

Runs as a single-executable on Windows 10/11 (64-bit). No installer, no administrator privileges, no additional DLLs required.

LEE22.NET OCR CONVERTER
The powerful tool to convert many image files into text files. Just drag and drop image files into the listview and you can get all these image files converted into text files in a sec. Now, it's only compatible with two languages, English and Japanese, and I'm going to add more languages, and PDF files to text files converting function later if I'd like to.

JoyShine Password Generator
A deterministic password generator for Windows. Enter two keywords you can easily remember and the same strong password is reproduced every time, so there is nothing to store or sync. Toggle numbers, uppercase, lowercase and symbols (with an editable symbol set), set the length anywhere from 5 to 128, and read the entropy of each result in bits. Key stretching uses PBKDF2-HMAC-SHA256 with 600,000 iterations and HKDF (RFC 5869), and the clipboard is automatically cleared 30 seconds after copying. Runs as a single native executable on Windows 7 / 8 / 8.1 / 10 / 11 (64-bit). No installer, no .NET runtime, no additional DLLs required.

Convert Characters
Convert characters to Proper case, Upper case, Lower case, Encrypted, Decrypted, Narrow, Wide, MD5, SHA1, SHA256 and SHA512.