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CBZ to PDF
Read comics, manga and scanned books from CBZ archives in any PDF viewer by converting them to one compact, screen-sized PDF
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One page per image: The archive's images are placed on PDF pages in reading order, one image per page, colour preserved.
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Screen-sized and small: Pages are scaled to fit a letter page at screen resolution, so a 100 MB archive becomes a PDF of a few megabytes that opens instantly on a phone.
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Works everywhere: PDF opens on every phone, tablet, e-reader, computer and in every browser, with no comic app required.
You can upload up to 20 ebooks simultaneously.
Comic archives
How a CBZ becomes a PDF
A CBZ is a ZIP archive of page images. The converter extracts them, sorts them in page order and hands them to calibre's comic pipeline, which fits each image onto a letter-size PDF page. The result is a lightweight reading copy of the comic rather than a print master.
How to use Converter App
1
Upload the CBZ
Single issues, trade paperbacks or scanned books. Multiple archives can be converted in one job.
2
Pages are assembled
The images are ordered by file name, scaled to the page and written to a PDF, one per page.
3
Download the PDF
Open it in Acrobat, Preview, a browser, on an iPad or on an e-reader that handles PDF well.
Key features
Keeps page order
Numbered file names inside the archive define the sequence, exactly as comic readers display it.
Colour kept
Colour pages stay in colour; the images are stored as JPEG inside the PDF.
Light enough to email
Because pages are downscaled to screen size, even long trade paperbacks produce PDFs of a few megabytes.
Private
Uploads and PDFs are deleted automatically within two hours.
Experience & privacy
Built for reliable document conversion.
Backed by 10+ years of engineering expertise in large-scale data and scientific computing, it’s built for real-world document workflows that require accurate layout preservation, strict privacy, and dependable, high-level performance.
Trusted by Users
Rated 5 stars on Trustpilot for speed, reliability, and ease of use.
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Academic Use
Referenced in published research and used for interview transcription and qualitative data analysis.
Research use
CBZ and PDF: the same pictures, different habits
CBZ archives were invented for comic readers: fast page turns, right-to-left mode for manga, no overhead. PDF was invented for documents, but it is also the only format that every device opens without installing anything. Converting a CBZ to PDF therefore does not improve the comic; it broadens where you can read it. Students use it to read scanned textbooks on a laptop, families put children's books on a shared tablet that has no comic app, and commuters want a small file that loads in a mail app.
How the converter builds the document
The archive is unpacked and the images are sorted by name, the convention that every comic reader follows. calibre's ebook-convert then runs its comic input plugin, which normalises each image and scales it to the output page, and its PDF writer places one image per letter-size page. We measured the result: 1600 by 2400 pixel colour source pages came out as 584 by 754 pixel JPEGs inside the PDF, with colour intact, and the file shrank by about 90 percent. Metadata such as the title is taken from the archive name. The result is a standard PDF readable by any viewer, including very old ones.
Choosing the right output for your device
- Phones and 8-inch tablets: the converted PDF is ideal; pages match the screen and the file is small.
- Large tablets and monitors: keep the CBZ in a comic reader, or build a full-resolution PDF from the extracted images.
- E-readers: 6 and 7-inch Kindle and Kobo screens show the downscaled pages at their native size; larger models benefit from full-resolution pages.
- Printing: use the original images, not this PDF.
Alternatives worth knowing
If the target is a Kindle, our CBZ to EPUB converter produces an e-book with one grayscale, e-reader-sized image per page that is lighter than PDF; Kobo and PocketBook devices open CBZ files directly. If the goal is simply to open the pages, any ZIP tool can extract the images from a CBZ since the archive is an ordinary ZIP. And if you want the pages back in an archive later, our PDF to CBZ converter renders a PDF into page images again.
FAQ
Frequently Asked Questions
Why convert a CBZ to PDF?
Because PDF is readable on devices without a comic app: a work laptop, an e-reader, a school tablet, or a browser. It is also the format many annotation tools expect. For dedicated comic reading on a phone or tablet, CBZ in a comic app is still the smoother experience; PDF is for everywhere else.
Does the image quality change?
Yes, and you should know it before converting. calibre's comic pipeline resizes each page to fit a letter-size page at screen resolution, roughly 580 by 750 pixels in our tests with 1600 by 2400 pixel source pages. That is comfortable on a phone or a small tablet and keeps the file tiny, but it is not enough for a large monitor, a 12-inch tablet or printing. If you need the full-resolution pages, keep the CBZ, or extract the images with our CBZ to JPG converter and build the PDF with JPG to PDF, which keeps the original pixels.
How big is the PDF?
Much smaller than the CBZ. Because the pages are downscaled, a 100 MB archive usually becomes a PDF of 3 to 10 MB. In our test a 2 MB two-page archive produced a 260 KB PDF.
Will two-page spreads stay together?
Each image becomes one page. If the archive stores a spread as a single wide image, it is scaled to fit one letter page, which makes it small; if it stores two halves, they become two pages, and the viewer's two-page mode shows them side by side. Set the viewer to show the cover alone so spreads align correctly.
Can I convert CBR files as well?
Use our CBR to PDF converter for RAR-based archives, or convert the CBR to CBZ first. The PDF output is identical.
Is the PDF searchable?
No. The pages are images, so there is no text layer. For scanned text books, run the PDF through OCR afterwards to make it searchable, or OCR the images before building the PDF.