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Articles and tips on digital tools, productivity, and PDF technology
How to Calculate Zakat on Money and Gold: A Practical Step-by-Step Guide
Most people know zakat is 2.5% — the real question is 2.5% of what, exactly. This guide explains the nisab, the lunar year, what counts as zakatable wealth and what gets deducted, with a full worked example. At the end, you can calculate your own zakat in a minute using Sahel's free calculator.
How to Split a PDF into Multiple Files Easily (2026 Practical Guide)
Need to pull a single page out of a long contract or break a huge PDF into smaller parts? This guide walks you through splitting PDF files step by step, with real-world use cases and answers to the most common questions — all online, free, and with no software to install.
How to Compress a PDF File Without Losing Quality (2026 Guide)
Getting a "file too large" error when uploading a PDF? Learn the best free way to compress PDF files quickly while keeping text and images sharp, and understand the difference between compression levels
Convert Image Formats Online Free: PNG, JPG, WebP & AVIF in Seconds
Ever needed to upload a PNG to a website that only accepts JPG? In this guide we explain the differences between common image formats (PNG, JPG, WebP, AVIF), when to choose each one, and how to convert between them for free — no software needed — using Sahel's image format converter.
Create Free QR Code Online: The Ultimate Guide to Converting Links and Text
Looking for a fast and effective way to share your data? Learn how to create a free QR code online in simple steps to boost your digital communication and convert links or WhatsApp numbers into quick response codes.
How to Merge PDF Files Online for Free (Step-by-Step Guide)
Got several PDF files you need to combine into one organized document? This guide walks you through merging PDF files online for free, no software needed, with tips on page order and quality.