A CBR is a RAR full of page images, and RAR is the reason it is awkward: it is proprietary, so plenty of comic readers cannot open one. This reads it here in the tab and writes a PDF with one page per image.
Why CBR is the awkward one
libarchive reads it here — the same library bsdtar uses — so no WinRAR is needed and nothing is uploaded. If you want a comic archive rather than a PDF, CBR to CBZ does the same reading and writes the container every reader supports.
Nothing is re-encoded, and that is the whole point
A converter that offers you a quality option for this is decoding your artwork and compressing it again for no reason. The result here is bit-for-bit the pages you started with, in a container more things open.
Page order
page-2 before page-10, which plain alphabetical sorting gets backwards.
If the pages were already misordered inside the archive, they will be misordered in the PDF. Renaming files to guess at the intended order would be a worse surprise than reproducing what is there.
Why convert at all
Choose "page exactly the size of each image" for reading on a screen, and a paper size if it is going to be printed on paper.
Other names for this
Also searched as “comic rar to pdf”, “cbr converter”, “comic book rar to pdf”.
Questions
- Do I need WinRAR?
- No. The RAR is read in this tab. Nothing is installed and nothing is uploaded.
- Is my file uploaded?
- No. The PDF is built in this tab and handed to you as a download. That matters here more than most places: the documents people convert to PDF are contracts, CVs, medical letters and manuscripts.
- Should I convert to PDF or to CBZ?
- CBZ if you are going to read it in a comic reader — smaller, faster, and supported everywhere. PDF when something will only accept a PDF.
- Can I convert several files at once?
- Yes. Drop as many as you like, or a whole folder. Each becomes its own PDF keeping its original name.