Use Tool Free →
PDF to BMP Converter – Convert PDF to Bitmap Image Free | ProPDFMaker.com
✅ Free  ·  No Signup  ·  No Server Upload  ·  100% Private

PDF to BMP Converter
Convert PDF to Bitmap Image

Convert any PDF page to a high-quality BMP bitmap image. Choose your DPI resolution, 24-bit color or grayscale, select pages and download instantly — all in your browser.

PDF
PDF Document
➔
BMP
Bitmap Image
100%
Free Forever
300
Max DPI
24-bit
Color Depth
BMP
Output Format

PDF to BMP — Convert Now

Upload your PDF, choose resolution and color mode, select pages, then download BMP images.

ℹ️
How this works: PDF.js renders each page onto an HTML canvas at your chosen DPI. A custom pure-JavaScript BMP encoder then writes a valid Windows BMP file with correct 14-byte file header, 40-byte BITMAPINFOHEADER, and 4-byte aligned BGR pixel rows — all in your browser. No server, no upload.
⚙️ Conversion Settings
A4: ~1240 × 1754 px — ~6.2 MB/page
📂 Upload PDF File
📄

Drag & Drop PDF file here

or click to browse — never uploaded to any server

✅ PDF Files Only
🖼️ Select Pages to Convert
🖼️

No PDF loaded yet

Upload a PDF above and click "Load PDF & Show Pages"

Why Use This Tool

The Best Free PDF to BMP Converter

Render PDF pages to high-quality BMP bitmaps entirely in your browser — no plugins, no uploads, no quality loss.

🔒
100% Private & Secure
Your PDF never leaves your device. All rendering and BMP encoding happens locally in your browser using PDF.js. No server, no data collection.
🖼️
Native BMP Encoder
A pure-JavaScript encoder writes valid Windows BMP files with the correct 14-byte file header, 40-byte BITMAPINFOHEADER (DIB), and 4-byte aligned BGR pixel rows — no external libraries needed.
📐
4 DPI Options
Choose 72 DPI (screen-size), 96 DPI (web), 150 DPI (good quality), 200 DPI (high quality), or 300 DPI (print-ready). Higher DPI means larger, sharper BMP files.
🎨
24-bit Color & 8-bit Grayscale
24-bit RGB mode captures full color. 8-bit grayscale mode encodes with a 256-entry palette, producing much smaller BMP files suitable for document archiving or OCR.
☑️
Flexible Page Selection
Click thumbnails to select individual pages. Use Select All, Deselect All, or Invert Selection for fast bulk control before converting.
📦
ZIP for Multiple Pages
When converting multiple pages, all BMP files are packed into a single ZIP archive using JSZip for a clean one-click download. Or choose individual file mode.
🔢
Live File Size Estimate
The estimated BMP file size per page is calculated in real time as you change the DPI and color mode, so you can plan your output before converting.
🖥️
White or Black Background
PDF pages often have a transparent background. Choose white or black to fill transparent regions in the BMP output for a clean, print-ready result.
📱
Works on Any Device
Fully responsive and mobile-friendly. Convert PDF pages to BMP on desktop, tablet, or phone without installing any software or app.
BMP Format Reference

Windows BMP File Structure

Understanding what's inside the BMP files this tool generates.

SectionSizeDetails
File Header14 bytesSignature "BM", total file size, reserved (0), pixel data offset (54 bytes)
DIB Header (BITMAPINFOHEADER)40 bytesHeader size (40), image width, image height (positive = bottom-up), color planes (1), bits per pixel (24 or 8), compression (0 = none), image size, DPI in pixels/meter
Color Table0 or 1024 bytesNot present for 24-bit RGB. Present for 8-bit grayscale: 256 entries × 4 bytes (B, G, R, 0) with values 0,0,0,0 → 255,255,255,0
Pixel Datawidth × height × (3 or 1) + paddingRows stored bottom-up. Each row padded to a multiple of 4 bytes. 24-bit: B,G,R order. 8-bit: single intensity byte per pixel
Simple Process

Convert PDF to BMP in 3 Steps

From upload to BMP download in under a minute.

1
Upload Your PDF
Drag your PDF onto the upload zone. Pages are rendered as live thumbnails so you can see each page before converting.
2
Set Options & Select Pages
Choose DPI (72–300), color mode (24-bit or grayscale), and background. Click page thumbnails to select which ones to convert.
3
Download BMP Files
Click Convert & Download. Each page is rendered and encoded to a valid BMP file. Multiple pages are zipped together automatically.
More PDF Tools

More Free Tools on ProPDFMaker

PDF to AI PDF to AZW3 Organize PDF Pages MOBI to PDF ODT to PDF Merge PDFs
FAQ

PDF to BMP — Common Questions

What is a BMP file?
BMP (Bitmap) is an uncompressed raster image format developed by Microsoft. It stores raw pixel data with no lossy compression, making it ideal for applications that require exact pixel-level fidelity such as document archiving, printing, and image processing pipelines.
Why are BMP files so large?
BMP stores raw, uncompressed pixel data. A 150 DPI A4 page at 24-bit color is approximately 1240 × 1754 pixels × 3 bytes = ~6.5 MB. At 300 DPI the same page is ~26 MB. Use lower DPI for smaller files or choose grayscale mode to reduce size by two-thirds.
Is my PDF uploaded to a server?
No. All processing happens in your browser using PDF.js for rendering and a custom JavaScript BMP encoder. Your file never leaves your device — complete privacy guaranteed.
What DPI should I choose?
Use 72–96 DPI for screen display or web use. Use 150 DPI for general quality. Use 300 DPI for print-ready output, OCR preprocessing, or professional archiving. Higher DPI produces much larger BMP files.
What is the difference between 24-bit and 8-bit grayscale?
24-bit RGB stores full color as three bytes (R,G,B) per pixel. 8-bit grayscale stores one intensity byte per pixel with a 256-entry color palette — making files about 3× smaller while preserving all text and line art clarity.
Can I convert a password-protected PDF?
No. Encrypted PDFs cannot be rendered without the password. Remove the password from your PDF first using a PDF editor, then upload for BMP conversion.