Convert PDF to BMP — Uncompressed Bitmap

Convert PDF pages to uncompressed BMP images. BMP preserves every pixel without any compression, ideal for specialized applications requiring raw bitmap data.

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HEIC, WEBP, AVIF, TIFF, BMP, SVG, GIF, PNG, JPG, PDF, CR2, NEF, ARW, DNG — up to 50MB each, or 50 from a folder

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Preset:
Common
Modern
Legacy
Other

Modern format with excellent compression. Limited browser support.

Apple's format. Excellent quality at small sizes.

Lossless format. Large files, ideal for print/archival.

256 colors max. Best for simple graphics.

Uncompressed bitmap. Very large files.

Vector trace. Best for logos and simple graphics. Not a pixel-perfect conversion.

Smart
Manual

SSIM-optimized — finds the lowest file size at your chosen visual fidelity.

Need to crop first? Use the Crop tool. Want to adjust or filter? Try the Editor.

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Upscaling uses Lanczos interpolation (max 4x). Results may appear softer on images enlarged beyond 2x.

Resize tool → Live preview, percentage scaling, and dimension presets.

Tip: Use PNG or WebP for transparent output. Standalone tool →

Click or drop logo (PNG/JPG/WEBP, max 5MB)

Lossless format — files can be large

GIF is limited to 256 colors

Best for logos, icons, and line art. Photos produce stylized results.

BMP files are uncompressed and can be very large. Consider TIFF (LZW) or PNG for lossless with smaller file sizes.

Leave empty for all pages. Multi-page PDFs produce a ZIP.

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PDF vs BMP Comparison

Feature PDF BMP
Full Name Portable Document Format Bitmap Image File
Lossy Compression
Lossless Compression
Transparency
Animation
Browser Support All browsers (via built-in viewers) Most browsers (legacy format)
Color Depth Device-dependent 16.7M (24-bit)
Typical Use Documents, print, archival, sharing Windows legacy, uncompressed images
Year Introduced 1993 1986

Why Convert PDF to BMP?

BMP is needed for certain legacy applications, embedded systems, and specialized software that requires uncompressed bitmap input.

How to Convert PDF to BMP

1

Upload your PDF.

2

KoalaPic renders each page as a BMP image.

3

Download all pages as a ZIP.

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Quality Note

BMP is uncompressed — files are very large but pixel-perfect. Consider PNG for lossless with compression.

Frequently Asked Questions

Only because something requires it. BMP is uncompressed, so it is far larger than PNG with no quality advantage — both are lossless. Some older Windows document tools, imaging SDKs and embedded systems accept BMP and nothing else.

A 150 DPI A4 page produces roughly 25 MB, and at 300 DPI about 100 MB per page. BMP applies no compression at all, so a 200-page document at print resolution runs into tens of gigabytes.

No. BMP and PNG both store the rendered page losslessly, so the pixels are identical — BMP simply stores them without compression. Raising the DPI is what improves text quality, not changing to BMP.

Yes, one BMP per page up to 200 pages, returned as a ZIP in page order. Given the file sizes, consider converting only the pages you need.
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