BMP vs RTF — Differences, File Size & When to Use Each

BMP vs RTF

A detailed comparison of BMP Image and Rich Text Format — file size, quality, compatibility, and which format to choose for your workflow.

Convert RTF → BMP

BMP

BMP Image

Raster & Vector Images

BMP is an uncompressed raster image format native to Windows. Files are large but preserve exact pixel data with no compression artifacts. Rarely used on the web due to file size.

About BMP files

RTF

Rich Text Format

Documents & Text

RTF is a cross-platform document format that supports basic text formatting like bold, italic, fonts, and colors. It is readable by virtually all word processors, making it useful for maximum compatibility.

About RTF files

Strengths Comparison

BMP Strengths

Dead-simple format — trivially easy to read and write.
Lossless and uncompressed — perfect bit-exact pixel storage.
Universally supported in Windows applications since 1985.
Supports 1, 4, 8, 16, 24, and 32-bit color depths.

RTF Strengths

Plain ASCII — portable, grep-able, and diff-friendly.
Supported by every word processor on every OS since 1990.
Cannot carry macros or embedded code — relatively safe to open.
Simple enough to parse by hand or generate with a small script.
Good interchange format when DOCX compatibility is shaky.

Limitations

BMP Limitations

Enormous file sizes — no meaningful compression in typical use.
Not a web format — browsers support it but nobody serves BMPs over HTTP.
No metadata support (no EXIF, no ICC profile in practice).
Multiple header versions mean "a BMP" is ambiguous — parsers must handle several variants.

RTF Limitations

Frozen in 2008 — no modern features (no comments, poor styles, no track changes).
File sizes are bigger than DOCX for the same content (no compression).
Images are base64-encoded inline, inflating files further.
Visual fidelity drifts between Word versions despite the spec.

Technical Specifications

Specification	BMP	RTF
MIME type	image/bmp	application/rtf
Extensions	.bmp, .dib	.rtf
Compression	None (typical); RLE 4/8 bit (rare)	—
Color depths	1, 4, 8, 16, 24, 32 bits per pixel	—
Byte order	Little-endian	—
Standard	—	RTF Specification 1.9.1 (2008)
Character set	—	ASCII with Unicode escapes (\u)

Typical File Sizes

BMP

Small icon (32×32) 4 KB
Screenshot (1920×1080) ~6 MB
4K image (3840×2160) ~25 MB
Scanned A4 at 300 dpi ~25 MB

RTF

Short formatted letter 15-50 KB
20-page report with styling 150 KB - 1 MB
Document with embedded images 2-20 MB

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Frequently Asked Questions

BMP (Bitmap) is a raster image format developed by Microsoft for Windows. It stores images with no compression by default, resulting in large file sizes but pixel-perfect quality. It has been part of Windows since version 1.0.

BMP (Bitmap) is a raster image formato developed by Microsoft para Windows. It stores images com no compressão by default, resulting in large tamanho do arquivos mas pixel-perfect quality. It has been part of Windows since version 1.0.

BMP files open in Windows Paint, Photos, macOS Preview, GIMP, Photoshop, and virtually any image viewer. All Windows applications support BMP natively.

BMP arquivos abrir in Windows Paint, Photos, macOS Preview, GIMP, Photoshop, e virtually any image viewer. All Windows aplicativos support BMP natively.

PNG is better than BMP in almost every scenario since it provides lossless compression (smaller files), transparency support, and wider cross-platform use. BMP is mainly relevant for legacy Windows applications.

PNG is melhor que BMP in almost every scenario since it fornece sem perdas compressão (smaller files), transparência support, e wider cross-platform use. BMP is mainly relevant para legacy Windows aplicativos.