qpdf
Fewer than 5 people recommend it so far, so there's no written verdict. Here is what commenters said.
4recommend
0warn against
Jan 10, 2026first mention
Jan 26, 2026latest mention
Why people recommend it
“the qpdf cli for occasional stranger (particularly encryption-related) things”
switched from Adobe Acrobaton “Ask HN: Is there a good open-source alternative to A…”
“On linux I use qpdf”
Show 2 more
“you can use qpdf or PDFEdit to interpret a PDF's raw code”
“my needs are met by using `qpdf` to export QDF”
Caveats and dissent
No one in these comments warned against it.
Who recommends it in their own words
Threads where it came up
Data: qpdf.json. Quotes are verbatim; the verdict and theme labels are written by a model from these comments, and every clause links to its sources.
All comments 4
“the qpdf cli for occasional stranger (particularly encryption-related) things”
“On linux I use qpdf”
“you can use qpdf or PDFEdit to interpret a PDF's raw code”
“my needs are met by using `qpdf` to export QDF”