Compress DjVu Files
Make a large DjVu book smaller, free and right in your browser: nothing is uploaded. Heavy scans are encoded again at a resolution made for reading, and the text layer and contents are kept.
- 100% free
- No upload
- No sign-up
- Text kept
How to compress a DjVu file
- 1
Choose your DjVu files
Drop one or more .djvu or .djv files on the page, or click Choose files. Choose Smaller, or Better pictures for books with illustrations.
- 2
Wait while it works
Each page is drawn again and encoded right in your browser. A book of a few hundred pages takes a minute or two.
- 3
Download the smaller book
You'll see the size before and after. Click Download to save the compressed DjVu file.
Why use this DjVu compressor
No upload
Your books never leave your device. Nothing is sent to a server or stored anywhere.
Much smaller files
Scans made at very high resolution or saved as full-colour photos often shrink to a fraction of their size.
Still searchable
The hidden text layer is kept on every page, so you can still search the book and copy text from it.
Contents kept
Bookmarks and the table of contents stay, pointing to the same pages.
Works on any device
Windows, Mac, Linux, Chromebook, iPhone, iPad and Android: all you need is a recent browser.
Free, no limits
No sign-up, no watermark, no ads, and no limit on file size or number of books.
How does DjVu compression work?
Some DjVu books are much larger than they need to be: pages scanned at 600 dpi or more, or plain text pages saved as full-colour photos. On a screen, 300 dpi is plenty for text.
This tool draws each page again and encodes it the way DjVu was made for: text pages in black and white at 300 dpi, pages with pictures or colour as pictures at 150 dpi (200 dpi with Better pictures). A page that wouldn't come out clearly smaller is kept exactly as it was, so books that are already compact stay as they are.
To read the smaller book, open it in our free online DjVu viewer. To keep only some pages, use Split DjVu.
Compress DjVu: questions and answers
Free online DjVu tools