Guides
Short, practical answers to the questions behind a conversion, with real test numbers.
Why your iPhone photos are HEIC, and how to open them anywhere
iPhones save photos as HEIC to save space, but Windows, Android and many websites can't open them. Why that happens, and how to get a JPG for free.
How to reduce image size for a website without losing quality
A phone photo is about 5 MB; a web page needs closer to 100 KB. Resize, pick a modern format, set the quality and strip metadata, with real before-and-after numbers.
JPG vs PNG vs WebP vs AVIF: which image format to use
Which image format should you use? JPG, PNG, WebP and AVIF compared on file size, quality, transparency and browser support, with real test numbers.
How to get a photo under 100 KB, 200 KB or 1 MB for an upload form
Upload form says "max 200 KB"? How file size limits work, what to change first, and how to hit any limit in one step, with real results from a 12-megapixel photo.
Turn phone photos of a document into one small PDF
Ten phone photos make a 50 MB PDF if you are not careful. How to take good document photos and combine them into one PDF of 1 to 2 MB, free and private.
How to make a video small enough to email or send in chat
Why phone videos are so big, how much smaller they can get, and the settings that fit a clip into an email. Plus why turning a video into a GIF makes it bigger.
llms.txt: what Smushify does and how to automate it