Pas 1: Puja el teu EPUB fitxers utilitzant el botó de dalt o arrossegant i deixant anar.
Pas 2: Feu clic al botó "Convertir" per iniciar la conversió.
Pas 3: Baixeu el vostre fitxer convertit BMP Fitxers
EPUB a BMP Preguntes freqüents sobre conversions
How do I extract the cover from a EPUB file as BMP?
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Upload the EPUB and the converter detects the cover image (usually flagged in the OPF as `cover-image`) and returns it as a BMP. By default we serve the cover at its embedded resolution; the advanced "resize" option lets you target a specific width like 400×600 for a thumbnail grid.
Can I render every page of the EPUB as a BMP?
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Yes — switch the advanced option from "cover only" to "all pages" and we rasterize each EPUB page to a BMP at the chosen DPI, then bundle them in a zip. Reflowable EPUB pages render at a fixed page size (A5 / 6×9 / custom) before rasterization.
At what resolution does the extracted BMP come out?
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Default is 1600×2400 (high-res cover suitable for retailer upload). Advanced options expose 600×900 (web thumbnail), 1200×1800 (Kindle store cover), 1600×2400 (Apple Books / Kobo), and custom dimensions for ad creatives.
Will the BMP keep the EPUB cover color profile?
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Yes — ICC profile embedded in the EPUB cover (if any) is preserved into the BMP. Most retailer-uploaded ebook covers ship as sRGB, which the BMP keeps. For print-ready CMYK output, use a separate /image-to-cmyk/ step after extraction.
Can I extract specific pages of the EPUB as BMP, not just the cover?
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Yes — the page-range advanced option accepts inputs like `1,3,5` or `10-15` to pick which rendered EPUB pages get turned into BMP files. Useful for grabbing illustrations or pull-quotes for marketing.
Why is my extracted BMP cover blurry or low-res?
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The EPUB contained a low-resolution cover. Many older ebooks ship with 600×900 or smaller cover JPGs — upscaling makes them softer, not sharper. For marketing assets, source the high-res cover from the publisher rather than upscaling the in-book copy.
What about transparency in the BMP?
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PNG BMP preserves transparency if the EPUB cover had an alpha channel (rare for ebooks; common for promo art). JPG BMP cannot store transparency and flattens onto white. For logo / icon work, target PNG or WebP BMP.
Does the EPUB to BMP converter strip text from page images?
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No — rasterization is pixel-faithful. Text on the EPUB page renders as pixels in the BMP, no OCR or text extraction happens. For editable text, use /epub-to-docx/ or /epub-to-txt/ instead of this image route.
Is my EPUB file private during BMP extraction?
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Yes — uploaded EPUB files are processed in isolated workers and deleted within minutes. Cover extraction is a single-pass read with no human review.
How long does it take to render a 400-page EPUB as BMP files?
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Cover-only extraction is instant (under 2 seconds). Full-book rasterization to BMP at 150 DPI takes 30-90 seconds for a 400-page novel; high DPI (300+) doubles or triples that.
Can I use the extracted BMP cover commercially?
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Yes if you hold the cover rights (your own book, public domain reissue). Covers of published ebooks usually belong to the publisher; we just extract pixels — we don't change the licensing situation of the underlying EPUB.
What's the file size of a typical extracted BMP cover?
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A 1600×2400 cover at JPG quality 90 is 300-800 KB; the same dimensions at PNG are 1-3 MB. The advanced "quality" option trades file size against compression artifacts on the BMP output.
Els fitxers BMP emmagatzemen imatges en format de mapa de bits sense comprimir, cosa que resulta en fitxers de grans dimensions però amb una qualitat perfecta.