Guides & Tutorials
Clear, practical guides on images, SEO, passwords, JSON, calculations and more — written to help you understand the task, with links to the free tool that does it.
Best Free Online Tools for Everyday Tasks
The free browser tools that save the most time for students, freelancers, small businesses and office work — what each does and when to use it.
Read guideHow to Compress Images Without Losing Quality
Learn how image compression works, which format and quality settings to use, and a simple workflow to shrink photos by 60–80% with no visible loss.
Read guideHow to Convert JPG to WebP (and When You Should)
What WebP is, how much smaller it makes photos, browser support, and step-by-step instructions to convert JPG to WebP free in your browser.
Read guideHow to Format JSON Online (and Fix Common Errors)
How to pretty-print, validate and minify JSON, what the most common JSON syntax errors mean, and how to fix them quickly — with safe, local tools.
Read guideHow to Create Strong Passwords You Can Actually Use
What really makes a password strong, why length beats complexity, how passphrases work, and simple habits that protect your accounts from attacks.
Read guideHow to Use a Word Counter to Write Better
How word counters count words, why counts differ between apps, and how to use word, sentence and keyword statistics to edit essays, posts and scripts.
Read guideHow to Generate QR Codes That Always Scan
Create QR codes for links, Wi-Fi, contacts and payments, choose static vs dynamic codes, and follow size, contrast and testing rules so every code scans.
Read guideHow to Calculate Percentages: Formulas and Examples
Easy formulas for percentage of a number, percentage change, increases, decreases and reverse percentages — with worked examples and common pitfalls.
Read guideHow to Optimize Images for Websites and Page Speed
A practical checklist for fast-loading website images: dimensions, formats, compression, lazy loading, width/height attributes, alt text and file names.
Read guideBest Free SEO Tools for Website Owners
The free SEO tools that cover the essentials — Search Console, page speed, on-page checks, structured data and sitemaps — and what each one can (and can’t) tell you.
Read guideHow to Convert PNG to JPG (Without Ugly Black Backgrounds)
When to convert PNG to JPG, how to handle transparent areas, which quality to choose, and how to convert free in your browser without uploading files.
Read guideHow to Use Base64 Encoding (and When Not To)
What Base64 is, how it works, real uses like data URIs, email and API auth, why it is not encryption, and how to encode and decode text and files safely.
Read guideWhat Is JSON and Why Is It Used?
A beginner-friendly explanation of JSON: its syntax, data types, examples, how it compares with XML and CSV, and why APIs and apps use it everywhere.
Read guideHow to Calculate Age Online (Exactly, in Years, Months and Days)
How exact age is calculated, why simple subtraction gives wrong answers, leap-year birthdays, and how to find your age on a cut-off date for jobs and exams.
Read guideHow to Reduce Image File Size for Forms, Email and WhatsApp
Simple ways to make an image file smaller to meet upload limits like 200 KB or 1 MB: resize, compress, crop and change format — on any phone or computer.
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