Learn How to Use
ToolKH Utilities
Step-by-step guides, video tutorials, and pro-tips to help you get the most out of our free web utilities.
How to Use AI to Generate Text, Images & Videos – Guide with Sample Outputs (2026)
Master AI prompt engineering for multi-format text (JSON, Markdown, Social, Code), photorealistic images (Midjourney, DALL-E 3), and cinematic text-to-video (Sora, Runway Gen-3). Includes copyable prompts, sample outputs, and interactive prompt generator.
Top 10 AI Tools by Category (Text, Image, Video, Audio & More) – 2026 Guide
Discover the best AI tools in 2026 organized by category — text generation, image creation, video production, audio/voice, coding, and presentations. Includes free and paid options with official links.
Monthly Employee Timesheet & Overtime Tracker (Free Excel & CSV Download)
Download free Excel (.xlsx) and CSV monthly timesheets with automated overtime calculation formulas for standard hours, 1.5x regular overtime, and 2.0x Sunday/holiday rates.
YouTube Video SEO & Content Publishing Checklist (Free Printable Guide)
Master YouTube video optimization with our complete upload checklist, keyword strategy guide, thumbnail practices, and interactive SEO checker tool.
Free Download Khmer Unicode, Keyboard Layout & Popular Khmer Fonts Guide
Download official Khmer Unicode keyboard layout installers for Windows/Mac, view typing cheat sheets, and access top free Google Khmer fonts (Kantumruy Pro, Battambang, Moul).
How to Calculate NSSF & Tax on Salary in Cambodia (Complete 2026 Guide)
Master Cambodian Tax on Salary (ToS) and NSSF pension calculations with our free interactive calculator, GDT tax bracket breakdowns, dependent rebate rules, and HR payroll examples.
Free Cambodia Public Holiday Schedule (2020 to 2027) – Download Excel File
Download the complete official Cambodia public holiday list from 2020 through 2027 in Excel (.xlsx/CSV) format with Khmer and English translations. Perfect for HR, payroll, and project planning.
How to Use QR Code Generator Pro
Learn how to create custom QR codes, modify shapes and colors, embed logos, and export print-ready formats in high definition.