Standard Version, Main Window Details |
EasierSoft Bulk Barcode Generator and Label Printing Software |
Setting the Export Barcode Image File Format |
This program can export barcode image files to three formats: BMP, PNG, and EMF. EMF is a vector image format. |
1. BMP (Bitmap) |
What it is |
A simple, legacy raster image format originally created by Microsoft for Windows. |
Stores a grid of pixels (bitmap) plus a header describing image dimensions, color depth, and optionally a palette. |
Variants: uncompressed BMP is most common; older BMPs can also use simple RLE compression; headers include BITMAPINFO / DIB structures. |
Key characteristics |
Pixel-based (fixed resolution). |
Typically stores 1, 4, 8, 16, 24, or 32 bits per pixel depending on variant. |
24-bit BMP stores truecolor (no alpha), 32-bit BMP can store alpha in some cases (but alpha is not universally supported in all BMP readers). |
Very little metadata support and no standard color management (ICC profile support is uncommon). |
Advantages |
Very simple format easy to read/write and decode. |
Fast to load/parse because it's often uncompressed and sequential. |
Good for raw pixel dumps, debugging, or simple Windows-native workflows. |
No patent/licensing issues. |
Disadvantages |
Large file sizes because most BMPs are uncompressed (big storage and bandwidth cost). |
Limited features: poor/absent alpha support, weak metadata and color profile handling. |
Not suitable for web (file size) or images that must scale without quality loss. |
Cross-platform / web support is available but because of size it's rarely used outside specific Windows contexts. |
Typical use cases |
Simple Windows applications, quick screenshots saved on Windows (historically), raw image processing steps where speed of read/write matters more than storage. Not recommended for web or final distribution. |
|
2. PNG (Portable Network Graphics) |
What it is |
A lossless raster image format designed to replace GIF and improve on BMP for web and general use. |
Supports palettes (indexed color), truecolor (24-bit), and truecolor + alpha (32-bit). |
Compression: lossless DEFLATE (same family as ZIP/GZip). Optional interlacing (Adam7). |
Supports transparency (alpha channel), gamma, text metadata, and optional color profile chunks (e.g., iCCP). |
Key characteristics |
Pixel-based, but with efficient lossless compression. |
Fully supports 8-bit per channel RGBA (32-bit total) and can also support 16-bit channels in PNG specification (less common). |
Adam7 interlacing allows progressive display. |
Extensible chunk structure for metadata (tEXt, iTXt, zTXt, gAMA, cHRM, sRGB, iCCP, etc.). |
Advantages |
Lossless no image quality loss when saving. |
Native alpha transparency (per-pixel), making it ideal for overlays, icons, UI elements. |
Good compression reduces file size significantly compared to BMP while preserving perfect fidelity. |
Wide support across browsers, image editors, and platforms. |
Supports metadata and basic color management. |
Disadvantages |
File size larger than lossy formats like JPEG when storing photographs (but smaller than BMP). |
Compression is lossless: for photographic images where small file size matters, PNG is less efficient than JPEG. |
No native vector/scalability scaling a PNG up causes pixelation. |
Animated PNG (APNG) exists but is not as universally used as GIF/MP4 for animation. |
Typical use cases |
Web graphics requiring transparency (icons, UI elements, logos). |
Images where you must preserve exact pixel data (screenshots, line art, diagrams). |
Anywhere you need lossless quality with reasonable compression and cross-platform/browser compatibility. |
|
3. EMF (Enhanced Metafile / Windows EMF) |
What it is |
A vector/metafileformat introduced by Microsoft as an enhanced successor to WMF (Windows Metafile). |
Stores a sequence of GDI drawing commands (lines, shapes, text, bitmaps) and state changes rather than storing individual pixels. |
Can embed raster images inside the metafile, so an EMF can contain both vector instructions and bitmaps. |
Key characteristics |
Vector by nature: instructions like 'draw line,''fill rectangle,''draw text with font X,'etc. |
Resolution-independent for vector parts scales cleanly without loss of quality. |
EMF files are platform/technology-specific: they encode Windows GDI primitives (not portable XML like SVG). |
Two related variants: EMF and EMF+ (EMF+ extends GDI with GDI+ primitives). |
Advantages |
Scalability: vector primitives scale to any size with no quality loss excellent for printing and diagrams. |
Compact for line art, charts, and illustrations (often much smaller than an equivalent-resolution bitmap). |
Good for high-quality printing workflows, embedding in Office documents, and exchanging drawing commands between Windows apps. |
Can embed text as text objects (selectable/editable in host apps) and include device-independent units. |
Disadvantages |
Windows-centric and uses GDI commands poor interoperability with non-Windows systems and non-GDI graphics stacks. |
Not widely supported by web browsers (SVG is the cross-platform vector standard for the web). |
Complexity: because EMF encodes drawing commands, rendering depends on the consumer interpreting GDI records; not all programs support every EMF feature. |
Potential security issues if parsing untrusted EMF files in some viewers (rare, but historically discussed). |
If it embeds raster content, that part will not scale without loss. |
Typical use cases |
Vector illustrations for Windows applications, clip art, diagrams, charts for printing, and Office document graphics. |
Inter-application graphics exchange in Windows environments (e.g., copy/paste of vector drawings between apps using the Windows clipboard). |
|
4. Direct comparisons and practical guidance |
Raster vs Vector |
BMP, PNG= raster (pixel-based). Quality depends on resolution; scaling up loses sharpness. |
EMF= vector/metafile (command-based). Vector parts scale perfectly; better for line art, diagrams, and print. |
File size & compression |
BMP: usually largest (uncompressed). |
PNG: much smaller than BMP for most types of imagery due to lossless compression; for line art and screenshots PNG is very efficient. |
EMF: can be very small for vector graphics (stores drawing instructions), but can grow if it contains embedded bitmaps. |
Transparency |
PNG: excellent alpha/transparency support. |
BMP: limited/spotty alpha support historically. |
EMF: can render transparent objects if the drawing commands specify, but it's not an alpha-channel-per-pixel raster format behavior depends on renderer. |
Color fidelity and modes |
PNG: supports truecolor and indexed palettes, 8-bit and 16-bit channels, and color profile metadata. Good color fidelity. |
BMP: supports various bit depths but lacks standard color profile support. |
EMF: color is specified in drawing commands; color fidelity depends on the rendering device and color management of the consumer. |
Editing & interoperability |
PNG: universally supported by editors and browsers. Easy to open/edit as raster. |
BMP: widely supported on Windows; less used elsewhere. |
EMF: best supported in Windows/Office apps; many non-Windows tools either don't support it, or import it as a rasterized image or a converted SVG/PDF (conversion may be imperfect). |
Use in web and cross-platform environments |
PNG: ideal for web use when lossless quality or transparency is needed. |
BMP: not recommended for web due to large size. |
EMF: not suitable for web delivery (browsers don't natively render EMF); convert vector to SVG or rasterize to PNG/JPEG. |
Printing |
EMF: excellent for printing vector content (scales without loss). |
PNG/BMP: OK for printing if resolution is sufficient; BMP may cause huge files and PNG lacks vector scalability. |
5. Quick recommendations when to choose which |
Choose PNGwhen you need lossless quality, transparency, small-to-moderate file sizes, or web/browser compatibility (icons, UI, screenshots, graphics). |
Choose BMPonly when you need a very simple, raw, uncompressed bitmap for legacy Windows tooling, or for very fast read/write where storage/bandwidth is not a concern. In modern workflows BMP is rarely the best choice. |
Choose EMFwhen creating vector graphics intended for Windows applications, high-quality printing, or when you want the image to remain editable as drawing commands inside Windows/Office. For web or cross-platform vector needs, prefer SVGinstead. |
6. Misc useful notes & caveats |
If you need cross-platform vector graphics that work in browsers and most editors, prefer SVGover EMF. EMF is Windows/GDI-specific. |
For photographs where small file size matters and perfect lossless quality is not required, use JPEG(lossy) instead of PNG. PNG is better for graphics, text, and images needing transparency. |
PNG supports palette-based images (PNG-8) for very small graphics; PNG-24/PNG-32 for full-color and alpha. |
Some modern BMP variants and tools may support alpha or compression, but behavior is inconsistent test target environments if you rely on BMP alpha. |
EMF files can sometimes be converted to PDFs or SVGs for better portability; conversion quality depends on which GDI primitives were used. |
7. One-sentence summary |
BMP= very simple, often uncompressed raster (large files), good for legacy Windows tasks; |
PNG= modern, lossless raster with alpha and good compression (great for web/UI and images needing transparency); |
EMF= Windows metafile (vector) storing drawing commands excellent for scalable, printable graphics in Windows, but not a web-friendly format. |
cs@easiersoft.com