Blog: Guides and Answers

Simple guides and answers about photos, PDFs, QR codes and files. Everything here is written to help you finish the job quickly, using free tools that run in your browser.

iPhone and HEIC

• How to Convert HEIC to JPG (iPhone Photos): 4 Easy Ways
  Four easy ways to turn iPhone HEIC photos into JPG, free.
• What Is a HEIC File? A Simple Guide for iPhone Users
  What HEIC is, why your iPhone uses it, and where it will not open.
• Why Your iPhone Photo Will Not Upload (and How to Fix It)
  The two usual reasons an iPhone photo is rejected, and the fix.

Images

• How to Compress an Image to 100 KB (Step by Step)
  Get a photo under 100 KB for forms without making it blurry.
• Photo Size for Passport and Online Forms: Pixels, KB and DPI Explained
  Pixels, KB and DPI explained for passport photos and forms.
• JPG vs PNG vs WebP: Which Image Format Should You Use?
  When to choose JPG, PNG or WebP, in plain words.

PDF

• How to Make a PDF from Photos on Your Phone or Computer
  Combine photos or camera shots into a single PDF, free.
• How to Reduce PDF Size for Email and Online Forms
  Make a PDF small enough for email or a form upload.
• How to Scan a Document with Your Phone and Save It as a PDF
  Scan pages with your camera, auto-crop them and save one PDF.
• How to Edit a PDF for Free: Rotate, Delete, Reorder and Add Pages
  Rotate, delete, reorder pages and add images to a PDF, free.

QR codes

• How to Scan a QR Code Safely: Spot Fake QR Codes
  Check where a QR code leads before you open it.
• How to Create a QR Code for a Link, Text or Wi-Fi
  Make a QR code for a link, a message or your Wi-Fi.

Files

• Excel vs CSV: What Is the Difference and When to Convert
  What CSV keeps, what it loses, and when to convert.

Privacy

• Are Online File Converters Safe? How to Protect Your Files
  Uploading vs in-browser processing, and how to choose safely.

Free tools

HEIC to JPG · Compress image · Image to PDF · QR scanner · Excel to CSV