Guides & tutorials
Practical, tested guides to get the most out of your files — PDFs, photos, documents, audio and video.
How to make a PDF small enough to email
Gmail and Outlook.com cap attachments at 25 MB, iCloud Mail at 20 MB. How to get a PDF under the limit on any device, or send it another way.
How to compress a video to send by email, WhatsApp or Discord
Video too big to send? Current limits for Gmail, Outlook, WhatsApp, Discord and Telegram, the settings that fit, and free ways to shrink a video on any device.
How to convert iPhone photos to JPG (on any device)
Convert iPhone HEIC photos to JPG in bulk on Windows, Mac or the iPhone itself — built-in methods, the right settings, and a free no-upload converter.
How to convert MOV to MP4 on Mac, Windows and iPhone
Convert iPhone and Mac MOV videos to MP4 for free — Finder, iMovie, Clipchamp, VLC, HandBrake or your browser — and fix videos that won't play on Windows.
How to reduce image file size without losing quality
The three levers that shrink images — dimensions, compression, format — with the right settings for web, email and social media, on any device.
How to reduce PDF file size without losing quality
What actually makes a PDF heavy, which compression settings keep text and images sharp, and the free methods that work on Windows, Mac and phones.
The best free PDF tools in 2026, compared honestly
A fair comparison of free PDF tools — iLovePDF, Smallpdf, PDF24, Adobe and browser-only options — with their free limits, privacy model and best uses.
How to convert a PDF to Word without losing formatting
Why PDF-to-Word conversions break layouts, which free method keeps formatting best (Word, Google Docs, browser tools) and how to fix tables and columns.
How to extract audio from a video on any device
Pull the soundtrack out of a video as MP3 or M4A on Windows, Mac, iPhone or Android — free methods, the best bitrate, and how to avoid quality loss.
How to upload an MP3 to YouTube (by turning it into a video)
YouTube and Instagram don't accept MP3 files. Turn audio and a cover image into an MP4 for free — in your browser, iMovie, Clipchamp or with FFmpeg.
PNG vs JPG vs WebP: which image format should you use?
JPG, PNG, WebP, AVIF, SVG: what each image format is good at, file size and quality compared, and why downloads come out as WebP — and how to fix it.
How to password-protect a PDF for free
Add a password to a PDF for free with Preview, Word, LibreOffice or a browser tool. Open vs permissions passwords, AES-256, and how to share it safely.
HEIC vs JPG: what is a HEIC file, and should you keep it?
HEIC is the iPhone's photo format: half the size of JPG at similar quality, but poorly supported. How it works, how to open it, and when to switch.
How to convert photos to PDF on iPhone and Android
Turn photos into a PDF on iPhone or Android with built-in apps — Files, Photos, Notes, Google Drive — or a free browser tool. Multi-page, A4, small files.
How to merge PDF files on a Mac (4 free ways)
Combine PDFs on a Mac with Preview, a Finder Quick Action or a free browser tool — with the tricks for page order, and fixes when Preview won't cooperate.
MP3 vs WAV: what's the difference and which should you use?
WAV is lossless and big, MP3 is compressed and universal. Sound quality, file sizes per minute, and when to use WAV, MP3, FLAC or AAC — explained simply.