Guides & how-tos
Short, practical guides written to answer one question properly — and to point you at the right tool when you need it.
How to Merge PDF Files Free — Without Uploading Them Anywhere
Merge two or more PDFs into one clean document, the order you want, without sending your files to a server.
ImageHow to Compress an Image Without Losing Quality (2026 Guide)
The exact quality settings that shrink a photo by 60–80% with no visible difference — and when to stop.
ImageJPG vs PNG vs WebP: Which Image Format Should You Use?
A decision table for the three formats that matter, plus the one case where PNG beats everything.
PerformanceThe Right Image Size and File Size for a Fast Website
Concrete pixel widths and byte budgets that keep pages fast — no guessing, no “just run it through a compressor”.
PDFHow to Add Page Numbers or a Watermark to a PDF
Number, label and protect a document before it leaves your desk — without paying for desktop software.
PDFHow to Turn Photos Into One PDF (Receipts, IDs, Homework)
Combine phone photos and scans into a single tidy PDF that matches page sizes and stays readable.
SEOSEO Checklist for a New Website: The 14 Things That Actually Move Rankings
The technical fixes that remove roadblocks, then the content work that creates rankings. In the right order.
AnalyticsUTM Parameters Explained: Track Campaigns Without Breaking Your URLs
What utm_source, utm_medium and utm_campaign really do, and the naming convention that keeps reports readable.
SecurityHow to Create a Strong Password You Can Actually Remember
What makes a password strong in 2026, why length beats symbols, and how to store them properly.
MoneyEMI Calculator Explained: What Your Loan Payment Really Costs
How the monthly instalment is calculated, why the first years pay mostly interest, and how to compare offers.
MarketingHow to Make a QR Code That Actually Works (Size, Contrast, Testing)
Why some printed QR codes fail in the wild, and the practical rules that make yours scannable every time.
PerformanceDoes Converting Images to WebP Improve SEO?
What actually changes when you move to WebP: bytes, speed, Core Web Vitals — and what does not.
DeveloperHow to Format and Validate JSON (and Fix the Error Google Sends You)
A five-minute method for turning a wall of minified JSON into readable, valid data — plus the errors that break most files.
ImageHow to Resize an Image by Pixels — Exact Width & Height, Free
Set an exact pixel width and height, keep the aspect ratio locked and download as JPG, PNG or WebP — entirely in your browser.
SocialFacebook Story, Post & Page Cover Sizes 2026 — Exact Pixels
The current Facebook image dimensions: story 1080×1920, feed 1200×630, page cover 851×315 and profile 320×320 — each with a free resizer.