The most common and most likely answer to this crossword clue is the 9 letter word PRINTABLE
I've seen this crossword clue in The Guardian
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More clues leading to the result PRINTABLE
Buddy explains!

The straight part
We know that "Like PDFs" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case like pdfs = printable.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does PRINTABLE mean?
PRINTABLE noun- A digital image meant to be printed on paper.
- Worthy or capable of being printed.