Batch PDF to BMP Converter

Pure Local Processing No Server Upload 5 Output Formats PDF.js Engine

Output Format

PNG Lossless, best for documents JPEG Small file, best for sharing WebP Modern web format BMP Uncompressed bitmap TIFF Professional print/archive

Resolution (DPI) 72=screen, 150=medium, 300=print

Pages

All Pages Custom Range

100% Free & Private batch PDF to BMP converter. No file upload required — convert PDF pages to lossless BMP bitmap format locally in your browser. Preserves every raw pixel with custom DPI settings (72-600) and page range selection. Ideal for professional image editing and printing, with fast ZIP download.

Tips & Tricks

Uncompressed Bitmap

BMP is an uncompressed bitmap format that stores raw pixel data. It preserves every detail with zero compression artifacts but produces very large files.

When to Use BMP

Choose BMP only for legacy system compatibility, Windows-native applications, or situations where you need absolutely no compression. It is rarely recommended for modern use.

BMP Best Practices

Avoid BMP for web or sharing. Use it only when required by legacy software. For most purposes, PNG provides lossless quality with much smaller file sizes.

Common Use Cases

Windows Compatibility

Use BMP format for legacy Windows applications

Raw Pixel Editing

Edit raw pixel data without compression artifacts

Legacy Software

Support older software that only accepts BMP format

Educational Use

Learn about bitmap image structure and pixel data

No-Compression Archive

Archive with zero compression for exact pixel data

Custom Processing

Feed raw BMP data into custom image processing pipelines

FAQ

Are my PDF files uploaded to a server?

No. All processing happens entirely in your browser using the PDF.js rendering engine. Your PDF file never leaves your device, making this tool safe for sensitive or confidential documents.

What makes BMP different from other formats?

BMP is an uncompressed bitmap format that stores raw pixel data. It produces very large files with zero compression artifacts. BMP is native to Windows and useful for legacy compatibility, but PNG is recommended for most use cases.

How do I select specific pages to convert?

You can convert All Pages, or use Custom Range by entering page numbers. Use commas for individual pages (e.g., 1,3,5) and hyphens for ranges (e.g., 1-5).

What DPI should I use?

72 DPI is standard for screen viewing and web use. 150 DPI offers a good balance of quality and file size. 300 DPI is recommended for high-quality printing. Higher DPI produces significantly larger files.

How many pages can I convert at once?

There is no hard limit on pages, but very large PDFs (200+ pages) at high DPI may consume significant memory. For best results, we recommend converting large PDFs in batches or at a lower DPI.

Why are BMP files so large?

BMP files are the largest because they are completely uncompressed — they store raw pixel data directly. A single BMP page at 300 DPI can be hundreds of megabytes. For most purposes, PNG or WebP offer far better compression with comparable quality.

Can I convert password-protected PDFs?

Currently, password-protected PDFs are not supported. Please remove the password protection before uploading.