Guides for getting things done in your browser
Short, practical write-ups that pair with the tools on this site — how to compress an image without wrecking it, scan a WiFi QR code, or trim a post to a platform's character limit. Every tool mentioned runs locally, so nothing you work on is uploaded.
How to Remove Location and Metadata From Photos Before You Share Them
What a photo really reveals, the built-in way to strip it on every device, why lossless removal matters, and which apps strip it for you.
How to Compare Two Lists and Find What's Missing
The formulas for Excel and Google Sheets, the invisible characters that break matches, and a paste-and-go alternative.
How to Get the Hex Code of a Color From an Image (and Why It Looks Wrong)
Three ways to pick a color, the four reasons the result is a shade off, and how hex and RGB relate.
How to Reduce Image Size in KB (and Hit an Upload Limit First Try)
Crop, resize, then compress, in that order. Plus why a 20 KB file can still be "too large", and how target-size compression really works.
Why Scanned PDFs Compress Differently from Text PDFs
One PDF shrinks by 90%, another gets bigger. The difference is whether the pages are pixels or vectors — and it changes what you should do.
How to Merge PDFs Without Uploading Them
Most free PDF mergers upload your file to a server. Here is what actually happens in the browser instead — and what to watch out for.
JPG to PDF: Page Sizes and Margins Explained
Page size, orientation, and margins change how a photo PDF prints. Here is how to choose without wasting paper.
Compress Images Without Visible Quality Loss: PNG vs JPG vs WebP
Lossless vs lossy, the quality settings that actually matter, and why resizing beats format choice every time.
How to Scan a WiFi QR Code on iPhone and Android
Camera-app steps for both platforms, what to do when nothing happens, and how to print a guest card that works.
Twitter/X, Instagram, and LinkedIn Character Limits in 2026
A quick reference table of current limits, plus why emoji count double on some platforms.