S7 FreeTools Blog
Actionable guides, tech tutorials, and digital productivity tips.
Ad Space
How to Reduce Image File Size Without Losing Quality
Published: August 15, 2026 • 3 min read
Large image files slow down your website and eat up storage space. Learn how to compress JPGs and PNGs efficiently using lossy and lossless techniques.
Read Article →CGPA to Percentage: The Complete Formula Guide for Indian Students
Published: August 17, 2026 • 4 min read
Learn how to convert CGPA to percentage using the correct formula for your university. Covers ×9.5, ×10, and custom multiplier methods with examples.
Read Article →How to Calculate EMI Manually (With Formula and Real Examples)
Published: August 17, 2026 • 4 min read
Learn the exact EMI formula used by banks, see real worked examples, and understand how principal, interest rate, and tenure affect your monthly payment.
Read Article →