What is a file format?
A format tells a program how to read the file.
File tools
A file ending hints at its type, but renaming it does not convert it. These pages explain formats, file kinds, making a file smaller, and keeping a clear name.
A file ending hints at its type, but renaming it does not convert it. These pages explain formats, file kinds, making a file smaller, and keeping a clear name.
A format tells a program how to read the file.
Renaming it does not change the format.
A file format shows how its inside is arranged.
A picture, a text file, and a PDF can carry the same words, but a program does not read them the same way.
An ending such as .pdf or .jpg is a hint.
Text, an image, a PDF, and an archive are not for the same job.
Each opens in a different program.
A text file stores writing and usually opens simply.
An image stores a picture.
A PDF is for keeping the look of a page together.
An archive packs several files into one bundle.
Make a file smaller when it does not fit in a message.
An already small text file changes little.
Making a file smaller is useful when sending or keeping it is hard.
Pictures, and PDFs that contain pictures, take the most room.
A short text file changes little after it is reduced.
A clear name makes the file easier to find later.
Do not delete the original until the new copy is checked.
A file name should say shortly what it is.
A date or the job of the document can sit in the name.
Words like new, final, and a random number say nothing a week later.