Batch Image to BMP Converter

Pure Local Processing No Server Upload 7 Output Formats Canvas API

Output Format

PNG Lossless, supports transparency JPEG Small file, best for photos WebP Modern web format AVIF Next-gen compression BMP Uncompressed bitmap TIFF Professional print/archive ICO Icon format for Windows

100% Free & Private batch image to BMP converter. No file upload required — convert HEIC, PNG, JPG, WebP, AVIF, TIFF, ICO to standard uncompressed BMP locally in your browser. Perfect for raw pixel data processing, with fast batch ZIP download.

Tips & Tricks

Uncompressed Format

BMP stores image data without any compression, resulting in large files but perfectly preserving every pixel. It is one of the simplest image formats to read and write.

When to Use BMP

Choose BMP when working with legacy software, raw pixel data, or systems that require uncompressed image data. It is widely supported across all platforms.

BMP Best Practices

Use BMP for compatibility with older software or when you need pixel-perfect data for further processing. For storage or web use, convert to a compressed format like PNG.

Common Use Cases

Legacy Software

Compatible with older applications that only support BMP

Raw Image Processing

Work with uncompressed pixel data for image analysis

Embedded Systems

Use in resource-constrained systems with simple rendering

Medical Imaging

Exchange lossless image data in medical applications

Data Conversion

Intermediate format for batch image processing pipelines

Education

Learn about image file structure with the simplest format

Frequently Asked Questions

Are my images uploaded to a server?

No. All processing runs entirely in your browser via the Canvas API. Your images never leave your device.

Why are BMP files so large?

BMP is an uncompressed format that stores raw pixel data directly. Each pixel is stored with full color information, resulting in large file sizes. For example, a 1920×1080 BMP is about 6 MB, while the same image as JPEG might be under 1 MB.

Is there a file size limit?

Yes, each file must be under 50 MB. You can upload up to 20 files at once. If you need to convert more, process them in batches.

When would I use BMP?

BMP is useful when you need raw, uncompressed pixel data for compatibility with legacy software, medical imaging (DICOM workflows), certain industrial systems, or as an intermediate format before applying custom compression algorithms.

Can I convert multiple images at once?

Yes. Upload up to 20 images at once. After conversion, you can download each file individually or package them all as a ZIP archive for convenience.