Practical, thorough articles on writing, PDFs, images, calculators, security, and self-publishing — each linked to the free tools that do the job.
A complete guide to counting words in an essay: the fastest free method, how word count affects your grade, and how to hit any limit without padding or cutting your best ideas.
Text & WritingSee exactly how many pages 500, 1,000, 2,500, and 5,000 words fill, the four settings that change the answer, and how to convert word counts to pages for free.
Image ToolsWebP images are typically 25–35% smaller than JPG or PNG at the same quality. Learn how to convert to WebP free in your browser, when to use it, and how it improves page speed and SEO.
Image ToolsA plain-English comparison of JPG, PNG, and WebP: how each compresses, what they are best for, and a simple decision guide for photos, logos, screenshots, and the web.
PDFLearn how to shrink a large PDF so it fits email limits and uploads quickly, while keeping text sharp and images readable — free, private, and entirely in your browser.
PDFCombine multiple PDFs into one clean document in your browser. Learn how to merge, reorder, and organise PDFs for free, plus when to split and compress the result.
Generators & SecurityWeak, reused passwords cause most account breaches. Learn what actually makes a password strong in 2026, how to generate and check one for free, and how to manage them safely.
ConvertersBase64 turns binary data into plain text so it can travel safely through text-only systems. Learn what it is, what it is not, common uses, and how to encode or decode it free.
CalculatorsLearn how BMI is calculated, what each category means, and the important limitations to understand before reading too much into a single number. Free BMI calculator included.
CalculatorsCompound interest is how savings grow and debt snowballs. Learn the formula, see clear worked examples, understand why time matters most, and calculate any scenario free.
CalculatorsUnderstand how monthly loan payments are calculated, what really drives the cost of borrowing, how the term changes everything, and how to compare offers before you sign.
CalculatorsPercentages confuse more people than admit it. This guide covers percentage of a number, percentage change, and everyday uses like discounts and tips, with free calculators.
CalculatorsSales tax and VAT confuse shoppers and small businesses alike. Learn how each works, how to add or remove them correctly, and calculate any amount for free.
Generators & SecurityQR codes link the physical and digital worlds. Learn how to create one free, where they work best, the mistakes that make a QR code fail, and how to test before printing.
PublishingYour blurb is the most important sales tool for your book. Learn the proven structure of a great description, how to write for emotion, and how to format it for retailers.
PublishingConfused about KDP royalties, the 70% vs 35% ebook options, print margins, and KENP page reads? This guide breaks down how self-publishing pay works and how to estimate yours.
PublishingKeywords decide whether readers ever discover your book on Amazon. Learn how KDP's seven keyword slots work, how to fill them for visibility, and the mistakes to avoid.
Generators & SecurityUUIDs are the unique identifiers that power modern software. Learn what they are, why collisions are practically impossible, where they are used, and how to generate one instantly.
ConvertersMessy, minified JSON is hard to read and easy to break. Learn JSON's simple rules, how to format and validate it, the most common errors, and how to convert to and from CSV.
Text & WritingA good URL slug is short, readable, and SEO-friendly. Learn what makes a strong slug, the rules to follow, common mistakes, and how to generate one from any title instantly.