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Guides & how-tos

Practical, no-fluff walkthroughs for everyday digital work — and the free tools to do each job right in your browser.

Jun 30, 2026

How to format and validate JSON

Beautify messy JSON, minify it for production, and fix the most common "invalid JSON" errors — with a free formatter that runs in your browser and never sees your data.

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Jun 29, 2026

How to make a QR code (that never expires)

Make a free QR code for a link, Wi-Fi, contact card and more — and why a static code never expires or tracks your scans. Plus design tips so it actually scans.

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Jun 28, 2026

How to compress a PDF without losing quality

Why PDFs get so big, the difference between lossless and lossy compression, and how to shrink a PDF for free in your browser — with tips to keep the text sharp.

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Jun 27, 2026

How to remove the background from an image (free)

Cut out the background of a photo for free, right in your browser — no Photoshop, no sign-up, nothing uploaded. Plus tips for clean edges and what to do with the transparent PNG.

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Jun 23, 2026

How to write a CV that gets interviews

A practical, no-fluff guide to writing a clear, modern CV — what to include, how to structure it, and the mistakes that get applications rejected.

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Jun 22, 2026

What to put on an invoice (with a free template)

Everything a professional invoice needs — the required fields, how to number and date invoices, payment terms, and how to handle tax — plus a free generator.

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Jun 21, 2026

How to calculate VAT (add and remove)

Simple formulas for adding VAT to a net price and removing VAT from a gross price, with worked examples — plus a free calculator that does it for you.

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Jun 20, 2026

How to merge PDF files for free

Three ways to combine PDFs into one document — in the browser, on Windows, and on Mac — plus tips on page order, file size, and keeping your files private.

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