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GoToolz Blog
Practical guides, tips and tutorials for working with PDFs, images, text, code and everyday digital tasks.
How to Calculate Fuel Cost for a Trip (Simple Formula and Examples)
Work out the petrol or diesel cost of any trip using km per litre, L/100 km or mpg, split it between passengers, and find your car's real fuel average.
How to Make a Dropbox or OneDrive Direct Download Link
Turn a Dropbox or OneDrive share link into a link that downloads the file instantly, embed images and videos on a website, and fix links that stop working.
How to Record Your Voice Online for Free (No App, Clear Sound)
Record your voice in the browser on a phone or computer, get clear sound without a studio, fix microphone problems and save the recording as MP3 or WAV.
What Color Do You Get When You Mix Two Colors? A Simple Guide
Find out what color you get when you mix red, blue, yellow, green and more, why paint and screens mix differently, and how to mix any two colors online.
TTF vs OTF vs WOFF vs WOFF2: Which Font Format Should You Use?
TTF, OTF, WOFF and WOFF2 explained in plain words: which one to install, which one to put on your website, and how to convert fonts for free in your browser.
How to Remove a Watermark, Logo or Date Stamp from a Photo (Free)
Remove a watermark, logo, text or old date stamp from your own photos in seconds. Learn the brush technique that gives clean results, free in your browser.
How to Calculate Zakat on Gold, Silver and Savings (Step-by-Step 2026 Guide)
A plain-language guide to working out zakat on cash, gold, silver and business stock, with the nisab explained, a worked example and a free calculator.
How to Calculate Your Loan EMI and See the Real Cost of a Loan
Learn how banks calculate EMI, why the total interest is often much higher than you expect, and four simple ways to pay less, with a free EMI calculator.