How to Email a Large PDF (When It’s Too Big to Attach)
PDF too big to email? Compress it first, split it into mailable parts if it's still over the cap, and…
Tools
AAC vs MP3 (and M4A): Quality, Size, and Compatibility Compared
AAC is MP3's more efficient successor (better at low bitrates); M4A is a container usually holding AAC. Which to pick…
Photos Too Large to Email? How to Shrink Them Under the Limit
Phone photos run 4-12 MB each, too big for any inbox. Compress each under 500 KB to clear Gmail, Outlook,…
Best Video Format for WhatsApp (and How to Hit the 16 MB Inline Limit)
MP4 (H.264 + AAC) is the best video format for WhatsApp. The real job: fit the 16 MB inline cap…
Why Is My Scanned PDF So Big? Causes and How to Shrink It
Scanned PDFs are big because each page is an image: high DPI, color mode, and weak compression multiply. Here's how…
MP3 vs WAV vs FLAC: Which Audio Format Should You Use?
MP3 vs WAV vs FLAC in plain English: lossy vs lossless vs uncompressed, size vs quality vs compatibility, and a…
What DPI Do You Need? Web vs Print (and Why Web DPI Is a Myth)
Screens render by pixel dimensions and ignore DPI, so web DPI is a myth. 300 DPI only matters for print:…
How to Compress a Video on iPhone Without Losing Quality
iPhone has no built-in compressor. Use Settings, iMovie, or Shortcuts to shrink clips, or hit an exact target size in…
How to Combine Photos into One PDF (iPhone, Android & PC)
Native steps to merge photos into one PDF on iPhone, Android, and Windows, their limits on order and size, and…
MP3 Bitrate Guide: 128 vs 256 vs 320 kbps (Which Should You Use?)
128 kbps for speech, 256 for general music, 320 for archiving. The file-size math, the use-case picks, and an honest…