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Why this runs on your computer

There is no upload: The work happens in this tab. Your file never travels, so there is no copy of it anywhere but your own disk.
Nothing to delete later: Sites that upload promise to delete your file afterwards. That promise only matters because the file was theirs to hold.
It works with the Wi-Fi off: The honest test. Turn off your connection and the tools keep working, because everything they need is already here.

PDF to CBZ: a comic PDF as a comic archive

Turn a PDF into a CBZ comic archive, one image per page - here in this tab, with nothing uploaded.

How to convert pdf to cbz

Drop your PDF.
Choose the page resolution and JPEG quality.
Save the CBZ.

Why this one stays private

Comic readers handle CBZ better than PDF. This renders each page in your browser and packs them as a CBZ, without uploading the PDF.

Questions

Can it make a CBR instead?

No - creating RAR archives needs a licence from RARLAB. CBZ opens in every comic reader that opens CBR.

Which resolution should I use?

1600 pixels tall suits most tablets and e-readers; 2400 keeps more detail for large screens.

Is my book uploaded?

No. The file is opened by your browser, in this tab, and the new file is made here too. Nothing is sent to a server, so there is no copy of your book anywhere else.

How to convert pdf to cbz

Why this one stays private

Questions

Other tools here