CBR to PDF, comic pages in the right order.

A CBR to PDF converter takes a comic book archive and makes one PDF from its pictures, so the comic opens in any PDF reader, on any phone and in apps that do not know the CBR format. This one runs in your browser. The comic is read on your computer, its pages are sorted in natural order, and the PDF is built there too. It also opens CBZ files, which are the same idea in a ZIP.

How to convert a CBR to PDF

1. Drop the .cbr or .cbz file on the box, or click it to choose the file.
2. Wait while the pages are read. A CBR is unpacked first, which takes a moment for a big comic.
3. Look at the pages. They are numbered in the order they go into the PDF. Press the cross on a page to remove it, for example a scanner's credits page.
4. Choose a Page size and, if you like, Last picture first for a book that reads right to left.
5. Press Download the PDF.

What a CBR and a CBZ are

A comic book archive is a folder of page pictures, packed into one file and renamed. A CBR is a RAR file. A CBZ is a ZIP file. Some comics use 7-Zip (CB7) or TAR (CBT), and those open here too. Because the name can be wrong, this page looks at the first bytes of the file to decide how to open it, so a CBR that is really a ZIP is not a problem.

Why the page order is right

Most comics name their pictures page1, page2, and so on. A plain sort puts page10 before page2, because it compares letters one by one. This page sorts numbers as numbers, so the order is page1, page2, page3 up to page10, page11. Pictures in folders are sorted by their whole path. The order you see on screen is the order of the PDF.

Page size

In the first two choices, one picture pixel is 0.75 of a PDF point, which is 96 pixels per inch. A picture 1200 pixels wide and 1800 pixels tall becomes a page 900 by 1350 points, or 12.5 by 18.75 inches. For paper, an 800 by 1200 picture fitted to A4 (595.28 by 841.89 points) is scaled by the smaller of 595.28 divided by 800 and 841.89 divided by 1200, which is 0.7016. It is drawn 561 points wide and as tall as the page, so about 17 points of background colour show on each side.

Picture quality

With As they are, a JPG goes into the PDF as the same bytes, so there is no new loss and the PDF is about as big as the pictures put together. A PNG goes in without loss too. WebP, AVIF, GIF and BMP pictures are drawn on a canvas and saved as JPG at quality 92, because PDF cannot hold them directly. Choose Smaller file and every picture is scaled to at most 1600 pixels on its longest side and saved as JPG at quality 75. That is the choice for reading on a phone.

What is not supported

• Comics locked with a password, and comics split into several parts, are refused with a message.
• The text in a comic is part of the picture, so it cannot be selected or searched in the PDF.
• A file other than a picture, such as ComicInfo.xml, is left out. The page tells you how many were skipped.
• A very large comic is held in your browser's memory. If the page runs out of memory, remove pages or choose Smaller file.

Only convert comics you own or have the right to copy. To open a RAR as a plain ZIP, use RAR to ZIP. To put loose pictures into a PDF, use JPG to PDF.