Page 2 of 2, 13 articles in total.
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What actually makes an image file big
Three factors decide the size of an image file: how many pixels it has, what format it is stored in, and how much detail the encoder was allowed to discard. Only one of them is usually under your control at the moment you need it. Read the article -
How to compress screenshots without making the text unreadable
Screenshots are mostly flat colour and crisp text, which is exactly what JPEG handles badly. Compressing them well means choosing the right format and the right dimensions, not the right quality slider. Read the article -
Does compressing an image remove EXIF data?
A photograph can carry GPS coordinates, a camera serial number and the exact time it was taken. Re-encoding through a browser canvas removes all of it - here is what that means before you share a file. Read the article -
Compressing images before you upload them to a website
Uploading first and compressing later means the oversized file is what visitors download until you notice. A short prepare-then-upload routine avoids that, and it takes less time than fixing it afterwards. Read the article -
Compressing images in bulk without mixing up the files
A batch compression that renames everything is a batch you have to sort out by hand afterwards. Here is what to watch for, and how to keep the results matched to the originals. Read the article -
What a compression rate actually means
A percentage saved is easy to misread. It depends on what you started with, it can be negative, and a big number is not automatically better. Here is how to read the figure the compressor reports. Read the article