Convert Image to BMP Format

    Use PngExport to convert a browser-supported image into a 24-bit BMP and download the bitmap file.

    1Upload
    2Convert
    3Download
    PngExport image conversion guide

    Convert an image to BMP online with PngExport

    Use the free PngExport BMP converter to turn a PNG, JPG, JPEG, WebP, or other browser-supported image into a 24-bit BMP bitmap. Convert an image to BMP in your browser and download a standard .bmp file without installing desktop software.

    PNG to BMPJPG to BMPWebP to BMP24-bit BMP output

    Before conversion

    PNG image

    May contain transparency

    The source may have transparent pixels or use a compressed image format.

    After conversion

    24-bit BMP

    White background

    BMP output is uncompressed and opaque. Transparent source areas are composited onto white.

    Illustrative format preview only; it does not show a converted upload.

    BMP explained

    What is a BMP image file?

    BMP (Bitmap Image File, also called a Windows bitmap) stores an image as rows of pixel color values. PngExport creates a 24-bit, uncompressed BMP: each output pixel has red, green, and blue color channels, with no alpha channel. This straightforward bitmap structure can be useful when a specific program, device, or workflow asks for a BMP file.

    Uncompressed 24-bit output

    This converter writes BMP pixel rows directly, including the required row padding and bitmap headers. It does not apply JPEG- style lossy compression.

    No alpha transparency

    Standard 24-bit BMP stores RGB color, not transparent pixels. The converter flattens transparent areas onto white so the exported bitmap has a solid background.

    How it works

    Convert PNG, JPG, or WebP to BMP in three steps

    Use the PngExport image-to-BMP converter above to create a BMP file from an image your browser can decode.

    1. 01

      Choose your image

      Select a PNG, JPG, WebP, or another image your browser can open. PngExport shows the selected image in the converter.

    2. 02

      Convert to BMP

      The browser decodes the image, composites transparency over white, and writes a 24-bit, uncompressed BMP bitmap.

    3. 03

      Download the BMP file

      Download the generated .bmp file to your device. Your original image is left unchanged.

    Browser-based workflow

    How PngExport converts an image to BMP in your browser

    The image is decoded and converted on your device using browser image and canvas features. No remote conversion-server upload is needed for this tool.

    1. 1

      Your browser decodes the selected image and draws it over a white canvas background.

    2. 2

      The converter reads the canvas pixels as 8-bit red, green, blue, and alpha values.

    3. 3

      Transparent pixels are blended onto white; RGB pixels are written bottom-up as 24-bit BGR rows with BMP row padding.

    4. 4

      The BMP file header and bitmap data are packaged as a local .bmp download.

    Useful for specific workflows

    When should you convert an image to BMP?

    BMP is useful when compatibility or a project requirement calls for bitmap data. It is usually not the best choice for smaller web downloads because uncompressed BMP files can be large.

    Legacy Windows software

    Create a BMP copy when an older desktop application or workflow specifically requires a bitmap file.

    Embedded screens and devices

    Prepare a simple, uncompressed bitmap for software or hardware tools that import 24-bit BMP images.

    Image editing workflows

    Use BMP as an intermediate format when an editor, utility, or project specification asks for a .bmp file.

    Testing and compatibility

    Make a standard BMP version to check how an image appears in software that supports bitmap files.

    Choose the right format

    BMP compared with PNG, JPG, and WebP

    Converting to BMP changes the file format, not the information or quality of the source. Use BMP when a workflow needs it; choose a compressed format when download size matters.

    FormatTypical fit
    BMPUncompressed bitmap compatibility; files are usually large and this output has no transparency.
    PNGSharp graphics, screenshots, and transparency with lossless compression.
    JPGPhotographs and smaller files when transparency is not required.
    WebPModern websites and sharing workflows that support WebP.

    At a glance

    What to expect from the PngExport BMP converter

    A free online BMP converter for creating standard 24-bit bitmap files from browser-supported images.

    • Convert PNG to BMP, JPG to BMP, JPEG to BMP, and WebP to BMP
    • Writes an uncompressed 24-bit BMP with a standard bitmap header
    • Stores three color bytes per pixel, with row padding as required
    • Flattens transparent source pixels onto a white background
    • Preserves decoded image dimensions; does not preserve transparency or metadata
    • BMP file size is often larger than a compressed PNG, JPG, or WebP
    • Processes the image in your browser without a remote conversion upload
    • Output is a still bitmap, not an animated image

    More from PngExport

    Explore related image tools

    Need a different image format or another edit? Try these PngExport tools to convert, resize, compress, and edit images online.

    Convert images to PNG

    Create a PNG copy for crisp graphics and transparency support.

    Explore tool

    Convert images to JPG

    Export photographs as JPG when broad compatibility matters.

    Explore tool

    Convert images to WebP

    Create a WebP image for supported web and sharing workflows.

    Explore tool

    Compress images online

    Reduce image file size when you need a lighter image to share or publish.

    Explore tool

    Resize an image

    Change image dimensions to fit a page, post, or project.

    Explore tool

    Open the online image editor

    Make edits to an image in your browser with PngExport.

    Explore tool

    Questions answered

    BMP converter FAQs

    Find out how to convert PNG, JPG, or WebP to BMP, what the 24-bit BMP contains, and how conversion works with PngExport.

    How do I convert an image to BMP with PngExport?

    Choose an image in the PngExport converter, click Convert to BMP, and download the generated .bmp file. The tool creates a 24-bit BMP in your browser.

    Can I convert PNG to BMP, JPG to BMP, or WebP to BMP?

    Yes. You can convert PNG, JPG or JPEG, WebP, and other image formats your browser can decode. Supported input formats can vary by browser and device.

    Does BMP support transparency?

    This converter outputs a 24-bit BMP without an alpha channel. Transparent parts of the source image are composited onto a white background in the BMP.

    Will converting to BMP improve image quality?

    No. BMP does not restore detail lost in a JPG or other source. This tool writes decoded pixels without applying additional lossy compression, but the 24-bit BMP output does not retain transparency or all source metadata.

    Why is my BMP file larger than the original?

    PngExport creates an uncompressed 24-bit BMP, which stores three color bytes per pixel, plus row padding and a small header. It is often larger than a compressed PNG, JPG, or WebP.

    Are my images uploaded to PngExport?

    The image is decoded and converted in your browser. The BMP is generated on your device rather than by a remote conversion server.

    BMP is best used when a program or device requires bitmap format. For smaller web images, consider PNG, JPG, or WebP instead.