What is a BMP File? How to Open, Convert and Manage Photo Format

Last Updated on November 11, 2021 by Peter Wood

BMP is one of the most widely used image and graphic formats. When you want to open, convert, and manage BMP files, you should understand what it stands for, when to save images in BMP format, and more. If you saved the photos in the wrong file format, it may destroy your artwork and make it unrecoverable anymore. When you want to learn more about the BMP files, you can find the ultimate guide for the file from the article.

What Is A BMP File

Part 1: What is a BMP File

BMP is an image file format, which represents the Bitmap Image file. But it means far more than that. Firstly, BMP stands for both a file extension and a file format. An image with a .bmp file extension indicates that it is a raster image or bitmap image. The image is non-compressed and contains a file header and the pixels of the associated bitmap.

The file header tells you and your photo editor the size of the image, the width, the height, the color options as well as the information about where the bitmap pixels should be located within the grid. Generally speaking, the BMP files only store 2D digital images with different resolutions and dimensions. They can be color images or monochrome images.

Cons and Pros of BMP File

The biggest problem is when to use BMP as the image format. Since BMP files stores raster graphic data, it is compatible with almost all digital devices and you do not need a specific BMP viewer.


  1. Available to most Windows, Mac, iOS, and Android devices.
  2. Easy to ready and compatible with most image editors.
  3. Support various color depths, alpha channels, color profiles, and more.
  4. Not compress, it is the reason BMP images are excellent in quality.
  5. Work well with pint output devices.
  6. Support lossless compression.


  1. The file size is very large due to non-compression.
  2. BMP images take a lot of space and slow down the performance.
  3. It is hard to send MBP images through the Internet.
  4. BMP files are not able to print on a vector plotter.

Bear in mind that JPG and GIF are also bitmaps, but they use image compression algorithms to decrease the file size. It makes sense that they work better on the Internet than BMP. When it comes to file size, PNG is also a lossless image format but significantly smaller. To print an image, TIFF is more flexible than BMP.

Define of BMP

Part 2: How to Open and Manage BMP

BMP is easy to browse and open on various devices, but it is very large in file size. What should be the best BMP viewer and manager to open the photos, check the details, or even manage the photo formats and video formats? WidsMob Viewer Pro is an all-in-one BMP photo viewer, converter, and manager that enables you to browse BMP files in different modes, convert photos in a batch process, apply photo filters, and even group the favorite files within clicks.

  1. Open the BMP photos in thumbnail, full screen, favorite, and other modes.
  2. Convert the BMP to JPEG, PNG, TIFF, and more, or vice versa in batch.
  3. Rename the BMP files, resize the photos, apply photo effects, and more.
  4. Select the desired BMP photos, delete the unwanted, or export them.
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How to Open and Manage BMP Files

Step 1: Launch WidsMob Viewer Pro after installing the software. Go to the File menu and click the Open option to trigger the open-file dialog. Then find the BMP files and open them. Of course, you can open a file explorer and locate the BMP images, drag and drop them into the viewer.

Step 2: Here are several modes that allow you to view and open BMP images in different situations. Just learn more details with the following information.

Full-Screen Mode: If you want to view BMP files with details, go to the View menu and choose the Enter Full-Screen option. Then the images will be displayed on full screen. You can switch images with the bar at the bottom.

Open BMP File

Library Mode: To view and manage all BMP images on one screen, locate the Library area on the left side, click the + icon and name the new album. Then move the BMP files into the album. Now, you will see all of them in the thumbnails. It allows you to adjust the size to view more files.

Library Mode BMP

EXIF Mode: If you need to get the metadata of your BMP files, you can go to the View menu and choose the Show Info option. Then you will see the EXIF information above each image.


Slideshow Mode: When it is not convenient to browse BMP files manually, click the View menu and choose the Slideshow mode. Then the images will display one by one. You can adjust the duration and other options.

Slideshow Mode BMP Win Download Mac Download

Part 3: How to Convert BMP Files in Batch

As mentioned previously, BMP is not the best format if you want to print or share the images. WidsMob Viewer Pro can also convert BMP images to other photo formats, like JPG, PNG, TIFF, etc. Moreover, it supports batch converting or selects the desired ones for conversion.

Step 1: After you open the BMP files in WidsMob Viewer Pro, you can go to the Edit menu, choose the Batch Convert option from the Batch option. Then the photo converter dialog will pop up.

Step 2: Click the Format option and choose a proper output format, such as JPEG for sharing online. Move the slider of the Quality option. The better the image quality, the large the file size.

Step 3: Click the Folder icon and set the output destination to store the output images. Finally, you can click on the Convert button to begin converting BMP files to JPEG images.

Save BMP to JPEG Win Download Mac Download

Part 4: FAQs about BMP Image

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1Is a BMP Image Compressed?

In general, BMP images are not compressed. It allows you to receive high-quality images, but, at the same time, the size of the file is very big. But you might also find some compressed BMP files, which are usually suitable for photographs.

2What are the Differences between BMP and JPEG?

BMP is uncompressed bitmapped images with high resolution, compared to the JPEG, which is a compressed digital image with a relatively small size. It is the reason that JPG images, being easily downloadable, are preferred over BMP images for web use.

3Is It Possible to Open BMP Image Online?

Yes. You can find some online photo viewers and editors to open BMP files, such as Fotor. Of course, Google Photos is another web-based BMP photo viewer that not only browses photo files, but also converts a BMP file to PDF and many other formats.


Based on the information above, you should understand what BMP is, the advantages and disadvantages of BMP images, and how to open, edit, and manage the photo files. WidsMob Viewer Pro is the best way to open and manage BMP files on your computer. Moreover, it can help you to batch convert BMP files into other image formats. If you have any queries, you can share more details in the comment.

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