Step 1: Share your EPUB files using the button above or by drag and drop.
Step 2: Click the 'Transform' button to start the transformation.
Step 3: Grab your converted BMP files.
EPUB to BMP Transformation FAQ
How do I convert an EPUB file to BMP?
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Upload your EPUB file using the picker above and the converter detects the source type and runs the EPUB → BMP pipeline. The result downloads automatically when conversion completes; no account needed for one-off conversions. EPUB is the open ebook standard from the International Digital Publishing Forum, now maintained by the W3C. BMP is the Windows Bitmap, the raw raster format built into Windows since 1985.
How are the pages of a reflowable book turned into fixed images?
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By rendering them at a chosen page size first, because a reflowable book has no inherent pages — the reader creates them from screen width and font size. The converter picks a standard page geometry, lays the text out onto it, and renders each resulting page as one image. Change the page size and you get a different number of images from the same book.
How big will the BMP files be?
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Larger than you might expect, because BMP keeps every pixel exactly rather than approximating. A 1080p still lands around 2-5 MB and a 4K still around 6-15 MB, so a long extraction run adds up quickly. That is the right trade when the images feed further processing, and the wrong one when they are going straight onto a web page. BMP usually stores completely uncompressed pixel rows with a small header, which is why it is so simple to parse.
Why does my EPUB file refuse to convert?
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DRM, in almost every case. A protected EPUB is encrypted and tied to an account, and no converter can decrypt it — ours included. Files you created yourself, or bought from a DRM-free store, convert without any trouble at all. EPUB has no fixed pagination, so page numbers are meaningless, and complex layout — tables, equations, multi-column — degrades badly.
Can I convert only part of the EPUB instead of all of it?
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Yes — the page-range option takes `1-5`, `1,3,5` or `all`, so a single chapter, an appendix or just the cover can be extracted without processing the rest. On a long document that is the difference between a handful of files and several hundred.
Do I get one image per page?
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Yes — each page renders as its own BMP file and the set arrives as a ZIP. The page-range option narrows that down when you only want a cover or a single chapter, and setting it to a single page returns one file rather than an archive.
Is the EPUB to BMP converter free?
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Yes — basic EPUB → BMP conversion is free with no registration required. Premium adds higher per-file size limits, more parallel batch workers, longer retention, and removes ads.
How big an EPUB file can I convert to BMP?
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Free accounts: up to 100 MB per EPUB file. Premium: typically 1 GB per file depending on the source type. Very large files are split into chunks server-side when the BMP format allows.
Will conversion change the content of my EPUB?
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Conversion preserves all information that both EPUB and BMP can represent. Format-specific features the BMP cannot represent (e.g. vector data in raster output, formulas in plain-text output) are rasterized or stripped — the result page lists what changed. An EPUB is a ZIP archive of XHTML and CSS with a manifest — essentially a small website packaged as a book.
Can I convert many EPUB files to BMP at once?
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Yes — drop multiple EPUB files into the upload zone and they are queued in parallel. Premium runs more parallel workers; on a 50-file batch this is the difference between minutes and seconds.
Does the EPUB to BMP converter work on phones and tablets?
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Yes — the UI is responsive and the conversion pipeline runs server-side, so mobile devices upload-then-download just like desktops. iOS and Android browser file pickers (camera roll, Files app) work end-to-end.
Which browsers does the converter support?
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Chrome, Firefox, Safari (15+), Edge, and Opera. The converter uses standard `<input type="file">` upload — no WebAssembly or PWA dependency — so even older browsers work to upload an EPUB and download the BMP.
