Output format
90%
Resize
Convert TIFF to BMP Online Free — Fast Batch Conversion
How to Convert Images Online
1Upload your TIFF
Click the upload button or drag and drop your TIFF file. Upload up to 10 files for batch conversion.
2Choose BMP output
BMP is selected by default on this page. Adjust quality settings if needed.
3Download
Click Convert and download your BMP file. For multiple files you get a ZIP archive.
Supported Image Formats
BMP
Uncompressed bitmap format. Maximum quality but very large file size.
TIFF
Professional lossless format used in printing and photography.
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.
JPG
Universal format for photos. Supported everywhere, great balance between quality and file size.
GIF
Classic format for simple animations. Supports transparency and up to 256 colors.
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
- Does TIFF to BMP lose quality?
- For standard 8-bit RGB TIFF: no quality loss — both are lossless. For CMYK TIFF: color space conversion may shift colors slightly. For 16-bit TIFF: quantization to 8-bit may cause subtle banding. For multi-page TIFF: only the first page is converted by default.
- What happens to multi-page TIFF?
- Only the first page becomes BMP by default. Use batch mode to extract all pages as separate BMP files.
- Can BMP store CMYK like TIFF?
- No. BMP is RGB-only. CMYK values are converted to sRGB during conversion.
- Is TIFF or BMP better for archiving?
- TIFF — it supports lossless compression (LZW/ZIP for smaller files), multi-page documents, ICC profiles, and CMYK color. BMP lacks all of these features.
- What about TIFF with LZW compression?
- The LZW data is fully decompressed during conversion. The BMP output contains raw uncompressed pixels and will be larger than the LZW TIFF.
- Can Convertify handle GeoTIFF?
- The image data is converted normally, but GeoTIFF coordinate tags are lost in BMP — BMP has no mechanism for geographic metadata.
- Why is my output BMP bigger than the source TIFF?
- BMP is uncompressed by spec — every pixel stored as raw RGB data with rows padded to 4-byte boundaries. A TIFF with LZW compression at 1080p might be 3-4 MB, but the equivalent 24-bit BMP is always 5.93 MB. The row padding formula is: floor((bpp × width + 31) / 32) × 4 bytes per row.
- Can I get a 1-bit monochrome BMP for embedded displays?
- Yes. Bilevel TIFFs or any grayscale TIFF can be thresholded to 1-bit BMP output. This is the standard input format for STM32 LCD displays, Waveshare e-paper modules, Adafruit thermal printers, and ESC/POS receipt printers. A 1-bit 1080p BMP is only about 260 KB.
- Does the BMP preserve alpha transparency from my TIFF?
- Only if you select 32-bit BGRA output, which requires a BITMAPV5HEADER (124 bytes, supported since Windows Vista). Standard BITMAPINFOHEADER (40 bytes) treats the fourth byte as padding, not alpha. Many legacy Win32 applications ignore the alpha channel entirely even with V5 headers.
- Can I get an indexed 256-color BMP to save space?
- Yes. TIFFs with 256 or fewer colors are palettized to 8-bit indexed BMP with an optimized color table. This produces files roughly 3× smaller than 24-bit BMP. For 16-color palettes, 4-bit indexed output is also available — useful for VGA-era legacy software and some embedded LCD controllers.
Professional to legacy: what TIFF to BMP does
TIFF (Tagged Image File Format) is the standard archival and prepress format, supporting features like multi-page documents, CMYK color spaces, 16-bit per channel depth, LZW/ZIP compression, embedded ICC profiles, and GeoTIFF coordinate systems. BMP supports none of this complexity — it stores raw RGB or RGBA pixels in a simple header-plus-data layout.
Converting TIFF to BMP extracts the first page (multi-page TIFFs are reduced to a single image), converts CMYK to RGB via ICC profiles, quantizes 16-bit channels to 8-bit, decompresses LZW/ZIP data, and writes the result as an uncompressed BMP. The pixel data is preserved faithfully within these format constraints.
CMYK to RGB color conversion
TIFF files from print workflows often use CMYK color space — four channels (Cyan, Magenta, Yellow, Key/Black) optimized for ink-based reproduction. BMP only supports RGB. Convertify performs CMYK-to-RGB conversion using the embedded ICC profile when available, or a default CMYK-to-sRGB transform otherwise.
This conversion is inherently imperfect because CMYK and RGB have different color gamuts. Colors achievable in CMYK ink (deep dark tones) may clip in sRGB, and vice versa. For color-critical workflows, convert TIFF to JPG or TIFF to PNG with embedded ICC profiles for better color management.
Multi-page TIFF handling
TIFF supports multiple images in a single file via SubIFDs (Image File Directories). Scanned documents, fax transmissions (CCITT Group 4 TIFF), and medical images often arrive as multi-page TIFFs with 10, 50, or even hundreds of pages.
BMP has no concept of multiple pages. Convertify extracts the first page by default and converts it to BMP. For all pages, use batch mode — each page becomes a separate BMP file delivered as a ZIP archive. This is common in document digitization workflows where a legacy OCR system ingests BMP page-by-page.
File size comparison: TIFF vs BMP
Ironically, BMP can be either larger or smaller than the source TIFF. Uncompressed TIFF and uncompressed BMP store the same raw pixel data and are nearly the same size (TIFF has slightly more header overhead due to its tag-based IFD structure). LZW-compressed TIFF is typically 2–5× smaller than BMP. CCITT Group 4 TIFF (used for B&W document scans) can be 50–100× smaller than 24-bit BMP of the same page.
For a 1920×1080 photographic TIFF: LZW-compressed TIFF ≈ 2–4 MB, uncompressed TIFF ≈ 6 MB, 24-bit BMP ≈ 5.93 MB. The formats are comparable in uncompressed mode.
When to convert TIFF to BMP
The same embedded and legacy use cases that drive all BMP conversions: industrial HMI software, Win32 GDI applications, thermal printers, CNC machines, and firmware image loaders. A specific TIFF→BMP workflow is in scanning and fax systems where a multi-page TIFF from a scanner needs to be fed page-by-page into a legacy document management system that only accepts BMP.
For archival purposes, keep the TIFF — it preserves metadata, color profiles, and multi-page structure that BMP cannot represent. Convert to BMP only for the specific system that requires it.