Skip to content
Guides
- HEIC vs JPG: Why iPhone Photos Are HEIC and When to ConvertWhat HEIC is, why iPhones use it, where it doesn't open, and three ways to get JPGs: the Most Compatible camera setting, automatic conversion on transfer, or converting files.
- 128 vs 192 vs 320 kbps MP3: File Size and What You HearMP3 size per minute at 128, 192, 256 and 320 kbps with the exact math, why 320 kbps is the ceiling, and why re-encoding a low-bitrate file at 320 adds nothing.
- Is It Legal to Convert YouTube Videos to MP3?What YouTube's Terms of Service actually say about downloading, how copyright law differs from the Terms, and the ways YouTube does let you save audio and video.
- How to Compress a PDF Without Uploading ItWhy scanned PDFs get so big, what PDF compression changes (image resolution and JPEG quality) and leaves alone (text), how to fit Gmail's 25 MB limit, and when compressing won't help.
- How to Remove a PDF Password (When You Know It)Take the open password or the printing and copying restrictions off a PDF you're allowed to open, why a forgotten open password can't be removed, and how to protect the file again.
- How to Make a Video Small Enough to EmailWhat decides a video’s file size (resolution, bitrate, length), the attachment limits in Gmail and Outlook, how to trim and compress a video to fit, and when sending a link works better.
- WebP vs JPG vs PNG: Which Image Format Should You Use?How JPG, PNG and WebP differ in compression, transparency and file size, which suits photos, screenshots and logos, where WebP can still cause trouble, and how to convert between them.