Developer & Accountant Tools Suite
High-performance, privacy-first tools designed to streamline daily financial, accounting, and software engineering workflows. Built by Hafiz Muhammad Usman with strict web standards and zero server tracking.
Instant Professional Invoice & Receipt Generator
Tax, VAT & discount compliant. Generate, preview, and print/save clean PDFs.
INVOICE
| Description | Qty | Rate ($) | Amount | |
|---|---|---|---|---|
| $1,200.00 | ||||
| $450.00 | ||||
| $650.00 |
Comprehensive Tool Guides & Specifications
Each tool includes full documentation, mathematical formulas, JSON syntax validation tips, code examples, and frequently asked questions.
JSON Formatter & Validator
Free online JSON Formatter and Validator. Prettify messy JSON, minify payloads, validate syntax, fix missing quotes, and inspect API responses instantly in your browser.
Invoice & Receipt Generator
Create professional PDF invoices and receipts online for free. Calculate subtotal, VAT/tax, discounts, payment details, and export print-ready vector invoices with zero watermarks.
Profit Margin & Markup Calculator
Calculate gross profit, net profit margin percentage, markup percentage, and total revenue online. Essential financial calculator for retail, e-commerce, and services.
Loan EMI & Compound Interest Calculator
Calculate monthly loan EMI payments, total interest payable, loan amortization schedules, and compound interest online. Free financial planning tool for business and personal loans.
Freelancer Rate & Salary Calculator
Calculate your target hourly rate, daily rate, and annual billable income based on living expenses, tax obligations, billable hours, and profit targets.
Base64 & URL Encoder/Decoder
Encode and decode Base64 strings, UTF-8 text, and URL parameters online. Fast, secure, client-side developer utility with live dual-direction translation.
CSS Box Shadow & Glow Generator
Generate modern, smooth CSS box shadows, colored glows, and ambient elevation layers visually. Copy clean CSS and Tailwind CSS classes with one click.
Cryptographic UUID v4 Generator
Generate cryptographically secure random UUID v4 identifiers online. Fast bulk UUID generator with zero latency, compliant with RFC 4122 specifications.