Practical guides for getting more out of Altto
Short, straightforward write-ups on converting between formats, plus how-to guides for the rest of Altto's tools.
JPG vs PNG: which should you use?
Compression, quality, transparency and file size compared — plus free tools to convert or compress either format.
Guide · 6 min readThe full BMI chart, explained
Every BMI category from underweight to Obese Class III, how to calculate BMI by hand, and healthy weight ranges by height.
Guide · 5 min readPractical ways to use a QR code
Wi-Fi sharing, digital business cards, menus and more — the exact format each one needs, plus a free generator to make one instantly.
Guide · 4 min readHow many words is a page?
A practical word count guide — how many words fit on a page, and how long an essay, cover letter or blog post should actually be.
Guide · 6 min readHow to convert a PDF to Word without losing formatting
Why formatting breaks during conversion, and the practical steps — before and after — that keep the result usable.
Guide · 5 min readPDF vs. Word: which format should you use?
Two formats built for opposite goals — a practical comparison and how to decide which one a document needs.
Guide · 5 min readHow to convert a password-protected PDF to Word
What PDF passwords actually do, and how to convert a locked PDF without sending it or its password anywhere.
Guide · 5 min readHow to convert a PDF to Word without uploading it
How to tell whether a "free" converter is sending your file to a server, and how to avoid it entirely.
Guide · 4 min readHow to convert a PDF to Word on iPhone or Android
No app, no subscription, no sign-up — how to do the whole job from your phone's own browser.
Guide · 4 min readHow to turn a PDF into a Word document
The quickest way to get from a PDF you can't edit to a Word file you can — plus what actually happens to your formatting along the way.