Output format
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Convert BMP to JPG Online Free — Fast Batch Conversion
How to Convert Images Online
1Upload your BMP file
Click the upload button or drag and drop your BMP file. Upload up to 10 files for batch conversion.
2Select JPG output format
Choose JPG as the output format. Quality 90 is the default.
3Convert
Click Convert. Convertify processes your BMP using Rust and libvips.
4Download JPG
Download your JPG file. The BMP is deleted from the server immediately after download.
Supported Image Formats
JPG
Universal format for photos. Supported everywhere, great balance between quality and file size.
BMP
Uncompressed bitmap format. Maximum quality but very large file size.
HEIC
Apple photo format used by iPhone and iPad. High quality with small file size.
HEIF
High Efficiency Image Format — same as HEIC, used on Apple devices.
WebP
Modern image format by Google. Up to 30% smaller than JPG with the same quality.
PNG
Lossless format that preserves every pixel. Best for screenshots and logos.
GIF
Classic format for simple animations. Supports transparency and up to 256 colors.
TIFF
Professional lossless format used in printing and photography.
AVIF
Next-gen format with excellent compression. Up to 50% smaller than JPG.
PPM
Portable Pixmap format used in Unix/Linux environments.
HDR
High Dynamic Range format storing extended brightness data.
FITS
Flexible Image Transport System used in astronomy and science.
PDF
Portable Document Format. Convert PDF pages to JPG, PNG or WebP images.
AVIF vs WebP vs HEIC vs JPG
Quick comparison to help you choose the right format
AVIF
- Size: Up to 50% smaller than JPG
- Browsers: Chrome, Firefox, Safari
- Transparency: ✓
- Best for: Web performance
WebP
- Size: 25-35% smaller than JPG
- Browsers: All modern browsers
- Transparency: ✓
- Best for: Web compatibility
HEIC
- Size: ~50% smaller than JPG
- Browsers: Safari only
- Transparency: ✓
- Best for: iPhone storage
JPG
- Size: Baseline
- Browsers: All browsers & apps
- Transparency: ✗
- Best for: Universal sharing
Frequently Asked Questions
- Why are BMP files so large?
- BMP stores every pixel as raw uncompressed data. A 1920x1080 24-bit BMP is exactly 5.5 MB regardless of content. File size is determined entirely by dimensions and bit depth — there is no compression.
- How much smaller will my JPG be compared to BMP?
- Typically 80–95% smaller. A 5.5 MB BMP at 1920x1080 becomes 200–500 KB as JPG at quality 90. The exact reduction depends on image content complexity.
- Will I lose quality converting BMP to JPG?
- At quality 85–95, visual differences are imperceptible for photographic content. Convertify converts at quality 90 by default, producing JPG output that is visually identical to the BMP source.
- Can I open BMP files in web browsers?
- No. No major browser supports BMP natively. Converting to JPG gives you a file that works in every browser without plugins.
- Can I convert multiple BMP files at once?
- Yes. Convertify supports batch conversion — upload up to 10 BMP files and download them all as JPG simultaneously.
- Does BMP support transparency?
- Standard 24-bit BMP does not support transparency. JPG also has no transparency support. If you need transparency, convert to PNG or WebP instead.
- What quality setting should I use for BMP to JPG?
- Quality 85–90 for most use cases. At quality 90 (Convertify default), JPG output is visually identical to the BMP source. Lower settings (70–80) produce smaller files with slight compression artifacts.
- Why do industrial machines produce BMP files?
- Legacy firmware written in the 1990s defaulted to BMP as the standard Windows bitmap format. Many industrial systems have never been updated and continue to export BMP. Converting to JPG is the standard step for moving these images into modern systems.
What is BMP and why are BMP files so large?
BMP (Bitmap) is Microsoft original uncompressed image format from 1985. BMP stores every pixel as raw binary data with no compression — file size equals exactly width x height x 3 bytes plus a 54-byte header. A 1920x1080 24-bit BMP is precisely 5.76 MB. A 3000x4000 photo saved as BMP is 34.3 MB. There is no algorithmic reduction — just raw pixel values. This made sense in 1985 when processing power was too limited for real-time compression, but in 2026 BMP files are impractically large for every modern use case.
Why convert BMP to JPG?
JPG reduces BMP file size by 90–97% with no perceptible quality loss for photographic content. A 17 MB BMP at 3000x2000 pixels becomes 1.5–3 MB as JPG at quality 90 — an 82–91% reduction. Beyond size, BMP has zero web compatibility: no browser displays BMP files natively, social media platforms reject BMP uploads, email clients frequently block BMP attachments as oversized. JPG is universally supported — every browser, OS, app, photo editor, social platform, and email client handles JPG without any extension or plugin.
BMP vs JPG comparison
| Feature | BMP | JPG |
|---|---|---|
| Compression | None (uncompressed) | Lossy (DCT) |
| File size (1920x1080) | ~5.5 MB | ~200–500 KB at quality 90 |
| Browser support | None | Universal |
| Social media upload | Rejected | Accepted everywhere |
| Email compatibility | Often blocked | Always works |
| Transparency | No | No |
| Best for | Legacy Windows systems | Universal sharing and web |
BMP file sizes: exact calculations
BMP file size is deterministic: width x height x 3 bytes + 54-byte header. A 1920x1080 BMP = 5,760,054 bytes (5.5 MB). A 2560x1440 BMP = 11,059,254 bytes (10.5 MB). A 3840x2160 (4K) BMP = 24,883,254 bytes (23.7 MB). A 6000x4000 (24MP) BMP = 72,000,054 bytes (68.7 MB). Compare to JPG: that same 6000x4000 photo at quality 85 is typically 4–8 MB. BMP files are 8–20x larger than equivalent JPG files.
Common sources of BMP files in 2026
BMP files still appear in several contexts. Industrial equipment — CNC machines, PCB inspection systems, laser cutters — often exports BMP from firmware written in the 1990s that has never been updated. Medical imaging devices including older X-ray and scanning equipment sometimes produce BMP output. Old document scanners with outdated drivers save BMP by default. Government and enterprise systems built on Windows XP/7-era infrastructure may generate BMP reports. Some CAD applications export technical diagrams as BMP. Batch BMP-to-JPG conversion is a recurring workflow step in all these environments.
Quality settings: how much does JPG compression affect BMP images?
JPG quality settings control the trade-off between file size and visual quality. At quality 95: nearly indistinguishable from the BMP source, roughly 60–70% smaller. At quality 85: visually identical for photographic content, 75–85% smaller. At quality 75: slight artifacts in fine detail, 80–90% smaller. At quality 60: noticeable artifacts, 90–95% smaller. For most use cases — sharing, email, web upload — quality 85–90 is the optimal balance. Convertify converts at quality 90 by default.
Batch BMP to JPG conversion
Convertify supports batch conversion — upload up to 10 BMP files at a time and download them all as JPG simultaneously. This is useful when processing exports from legacy industrial or medical equipment, converting old Windows screenshots, preparing scanned documents for email, or reducing an archive of BMP files. All files are processed in parallel.
Privacy and security
Convertify processes all files server-side over an encrypted HTTPS connection. Your BMP files are never stored permanently — deleted immediately after download. No account required. Files are purged within 6 hours even if not downloaded. This matters particularly for BMP files from industrial or medical equipment which may contain sensitive operational or patient data.
How Convertify converts BMP to JPG
Convertify uses a Rust backend with libvips for BMP to JPG conversion. libvips reads BMP files directly — handling all color depth variants from 1-bit monochrome to 24-bit color — and encodes to JPG at quality 90 by default using the libjpeg-turbo encoder. The streaming pipeline processes files without loading the entire BMP into memory. Files are deleted immediately after download.