Specifying Files

There are several different ways to specify the files that you want to check.

Allow your shell to expand

This works well (depending on which shell you are using), but most shells have a limit on the number of parameters you can pass.

Example (note there are no quotes):

fflint svg *.svg

Use fflint’s built-in expander

fflint can expand wildcards similar to a shell, but with the addition of ** to support zero or more directories (see patterns for details).

Example (note the double quotes):

fflint svg "./**/*.svg"

If fflint’s built-in expand is causing conflicts, you can use the --glob flag to change it:

Send a list via stdin

This works well and has the most flexibility of all, since you can use find (or a pipe or anything else) to make the list.


find . -name "*.svg" | fflint svg @-

Send a single file via stdin

This is useful if you are downloading or generating a file and do not need to store it locally.


curl --silent https://www.fflint.dev/favicon.ico | fflint ico -

If you have a directory named - (i.e. a single dash), you can force non-stdin mode by prefixing it with ./:

fflint svg ./-