Hey Product Hunt! 👋 I'm Muhammad Ahmad, founder and lead architect of KivaroTools.

KivaroTools — Free Online Utilities, Built with Privacy in Mind

🌐 https://kivarotools.com

I'm excited to introduce KivaroTools, a growing collection of online utilities and financial calculators designed to make everyday digital tasks easier, faster, and more privacy-conscious.

🚨 The Problem

Developers, finance professionals, and creators regularly work with sensitive files and data:

• Converting financial statements and invoices into Excel or Word.

• Formatting large JSON payloads or SQL queries.

• Compressing confidential PDFs to strict file-size limits.

• Calculating take-home salaries across different countries.

Yet many online tools require users to upload their files to remote servers, deal with usage restrictions, or pay for basic functionality.

I wanted to build a better alternative.

⚡ Our Approach: Browser-Based Processing

KivaroTools is built around a simple principle: process data locally whenever possible, without unnecessary server uploads.

Using modern web technologies, including Next.js, React, TypeScript, Web Workers, HTML5 Canvas, and Web Cryptography APIs, eligible tools perform their processing directly in the browser.

For supported tools, users can even disconnect from the internet after the page loads and continue working locally.

🛠️ What's Available?

1. Document & PDF Tools

🔗 https://kivarotools.com/document

• PDF to Excel, CSV, and Word conversions.

• Word, Excel, and PowerPoint to PDF.

• PDF compression with target file-size controls.

• PDF merging and splitting.

• PDF to JPG and image/HEIC to PDF conversion.

• Spreadsheet formula-injection protections (CWE-1236).

2. Developer & Security Tools

🔗 https://kivarotools.com/developer

• JSON formatting, validation, and auto-repair.

• JSON to CSV, Excel, and YAML conversion.

• SQL formatting across 19 dialects.

• Regex testing and debugging with capture-group extraction.

• SVG optimization.

• Base64 and Base64URL encoding.

• Secure password generation and SHA-256 hashing.

3. Financial Calculators

🔗 https://kivarotools.com/finance

• Salary and tax calculators covering 22 countries.

• Reverse net-to-gross salary calculations.

• PDF invoice generation.

• Precious metals value and Zakat Nisab calculations.

• Mortgage and loan EMI calculators.

• Step-up SIP investment planning.

4. Media & SEO Utilities

🔗 https://kivarotools.com/media
🔗 https://kivarotools.com/seo

• Image compression with target file-size controls.

• QR code generation with SVG and PDF export.

• Readability and grammar analysis.

• Multi-format text case conversion.

• Next.js metadata generation.

🔐 What Makes KivaroTools Different?

• Privacy-conscious, browser-based processing for supported tools.

• No registration required for the available utilities.

• A broad collection of document, developer, financial, and media tools.

• Financial calculators designed around country-specific tax rules and assumptions.

• A continuously evolving platform built with modern web technologies.

🚀 What's Next?

I'm working to expand KivaroTools with more useful utilities, improved functionality, and additional capabilities.

I'd genuinely love to hear from the Product Hunt community:

• Which tool do you find most useful?

• What features or utilities are missing?

• Have you found an edge case or bug that I should investigate?

I'll be actively participating in the comments and answering your questions.

Try KivaroTools: https://kivarotools.com

Thanks for checking out my project. Your feedback means a lot! 💙