PDF to CBZ Converter

About PDF to CBZ

Renders each page and packages the images as a CBZ — a comic book archive, which is a ZIP of pictures and nothing else. Comic readers on phones, tablets and e-readers open them natively and handle page turns, zoom and reading direction far better than a PDF viewer does.

File names are what a comic reader sorts by, so the pages are zero-padded: 001.jpg, 002.jpg, and so on. Without padding, 10.jpg sorts before 9.jpg in every reader there is, and a hundred-page book comes out in an order nobody can follow.

The format carries no text, no metadata and no table of contents — a CBZ is pictures in a named order. That is its whole design, and the reason it is so widely supported.

Where it helps

• Page names are zero-padded, so every reader shows them in the right order.
• JPEG or PNG, at a resolution and quality you choose.
• Comic readers handle page turns and zoom far better than PDF viewers on a small screen.
• The document never leaves your browser.

Limits

• A CBZ holds pictures only — no text, no search, no metadata, no contents.
• The text of the original is gone; this is a rendering, not a conversion.
• Rendering at a high resolution makes a large archive, and comic readers on older devices struggle with very large pages.
• CBR — the RAR-based variant — cannot be produced, and should not be: it needs a proprietary compressor.

Frequently asked questions

What is a CBZ, exactly?

A ZIP file of page images with a different extension. There is no more to it — which is why every comic reader on every platform supports it.

Why are the files named 001, 002?

Because readers sort by file name as text, and in text 10 comes before 9. Zero-padding is what keeps the pages in order.

JPEG or PNG?

JPEG for scanned or painted artwork, which is photographic. PNG for digital line art and flat colour, where JPEG leaves visible ringing along the edges — at two or three times the size.

Can I make a CBR instead?

No. CBR is a RAR archive, and RAR compression is proprietary — nothing in a browser can write one. Every reader that opens CBR opens CBZ too.

Related tools

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