Guides
Practical answers for everyday file tasks
Each guide explains the problem in plain language, then walks through the fix with the tools on this site. No signup, no software, nothing uploaded.
4 min read
How to compress a PDF for email
Email services reject big attachments. Here is how to shrink a PDF to fit Gmail, Outlook or WhatsApp limits without losing readable text, in your browser.
3 min read
How to convert iPhone HEIC photos to JPG
iPhones save photos as HEIC, which Windows, many websites and older apps cannot open. Convert them to JPG in your browser, in batches, with no app to install.
3 min read
How to merge PDF files on Windows, Mac or phone
Combine several PDFs into one document in the right order, on any computer or phone, without installing software or creating an account.
5 min read
How to reduce image size for a website without losing quality
Large images are the top reason pages load slowly. Learn the right dimensions, format and quality for web images, and shrink them in bulk in your browser.
4 min read
How to password protect a PDF, and when it is enough
Add a password to a PDF before sharing contracts, payslips or ID scans. Learn what an open password and an owner password do, and what encryption cannot protect you from.
3 min read
How to make a Wi-Fi QR code for guests
Stop spelling out your Wi-Fi password. Make a QR code that connects guests with one scan, print it well, and keep your network safe.