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2026-07-12 PDF Tools

Best Free PDF Tools Online in 2026 — Tested and Compared

We tested ToolVerseAI, Smallpdf, iLovePDF, PDF24 and Adobe's web tools on the same tasks to see which is fastest, most private, and worth bookmarking.

How to Compress Images Without Losing Quality

Practical tips for shrinking image file sizes for the web while keeping your photos looking sharp, plus how to do it free in your browser.

Percentage Calculations Made Easy: A Practical Guide

The three most common percentage problems — finding a percentage of a number, what percentage X is of Y, and percentage change — with clear examples and a free calculator.

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2025-06-28 Image Tools

How to Resize Images Online: A Complete Guide for Every Use Case

The right image dimensions for social media, e-commerce, email and web pages — and how to resize any image to exact pixel dimensions free online.

GPA Calculator Guide: How to Calculate Your Grade Point Average

How GPA is calculated on the 4.0 scale, what different GPA values mean, and how to estimate the impact of upcoming grades on your cumulative average.

Roman Numerals: The Complete Guide to Reading and Writing Them

How Roman numerals work, the rules for subtractive notation, where they're used today, and how to convert between Roman numerals and regular numbers instantly.

How to Generate and Remember Strong Random Passwords in 2025

Step-by-step guide to generating strong passwords, what makes a password uncrackable, and how to manage dozens of unique passwords without memorising them.

Base64 Encoding Explained: What It Is, How It Works and When to Use It

A clear explanation of Base64 encoding — why it exists, how it works character by character, common use cases in web development and APIs, and how to encode or decode it free online.

Word Count, Reading Time and Why They Matter for Writers

How to use word count targets and reading time to plan, structure and improve your writing — from blog posts to essays to social media copy.

How Age Calculators Work and When You Need One

Practical uses for age calculators — from checking eligibility requirements to planning milestones — and how the date arithmetic behind them works.

JSON Formatting and Validation: A Developer's Guide

Why JSON formatting matters, how to debug common JSON errors, and how to use a JSON formatter and validator to speed up your development workflow.

Metric vs Imperial: A Practical Guide to Unit Conversion

Everything you need to know about converting between metric and imperial units — length, weight, temperature and volume — with practical tips and common conversion factors.

Understanding BMI: What It Measures, What It Misses, and How to Use It

A balanced guide to Body Mass Index — how BMI is calculated, what the categories mean, the limitations of BMI as a health measure, and when to use it.

The Complete Guide to Free PDF Tools Online (2025)

How to merge, split and work with PDF files online without installing software. Covers privacy, browser-based tools and practical use cases.

SEO Meta Tags: The Complete Guide for 2025

A comprehensive guide to HTML meta tags for SEO — title tags, meta descriptions, Open Graph, canonical URLs, robots directives and structured data.

Password Security Guide: How to Create and Manage Strong Passwords

A practical guide to creating strong passwords, avoiding common mistakes, choosing a password manager, and understanding why length matters more than complexity.

QR Codes Explained: How to Create, Use and Track Them (2025 Guide)

A practical guide to QR codes — what they encode, how to design them for print, which error correction level to use, and how to create them free online.

The Complete Guide to Image Compression for the Web (2025)

Everything you need to know about compressing images for the web without losing quality — formats, tools, benchmarks and practical tips.