Repair your BMP Online

Do you have a BMP image file that will not open or display correctly? If so, our free-to-use BMP repair tool may be able to help. Our tool analyses the content of your BMP image file and is able to determine if the file pixel data is valid. Our tool will let you know what is wrong with your BMP file and attempt to fix it.

Or drag and drop your files here to upload.
A maximum of 20 files can be uploaded at once.

Please note: Your BMP, once uploaded to our server, will be deleted 15 minutes after upload.
If our tool offers the option to repair your file, please ensure you download the repaired file within this time period.

How to Repair your BMP Online?

Here are 3 simple steps to repair your BMP using our fast and free repair tool.

Upload your BMP

Click the "Select File" button, then select a BMP file. The maximum file size is 100MB.

Analysis and Repair

Your BMP file will be analysed, and our tool will attempt to repair your BMP file if possible.

Repair or Convert your BMP

Select an option to either repair or convert to receive your repaired BMP file.

Frequently Asked Questions

Will the resolution and quality of the BMP file be affected?

No. Our BMP repair tool will not adjust the resolution or quality of the repaired image file.

Is it free to use the BMP file repair tool?

Yes! Our BMP repair tool is 100% free to use.

Are there any usage limits when repairing my BMP file?

No, you can repair as many files as you wish. We do not have any limits when using our BMP repair tool.

How long does it take to repair my BMP?

We aim to process BMP repairs as quickly as possible; this usually takes around 5 seconds; however, this may be longer depending on the file size and data needed to be repaired.

What does the BMP repair process involve?

Once your BMP has been selected, it will undergo some initial checks to verify that the file has some basic information. If the initial checks pass, we then upload the file to our servers for more detailed analysis.

Is it safe to repair my BMP on FabConvert.com?

Yes, of course it is! Your BMP, once repaired, is deleted 15 minutes after upload, and any download link will expire after this time.

Can I repair my BMP on Windows, Linux, Android, iOS or Mac OS?

Yes! Our BMP repair tool will run on any system with a modern web browser.

BMP file format information

ExtensionBMP
Full NameBitmap Image File
TypeImage
Mime Typeimage/bmp
FormatBinary
Opens WithPaint.Net

BMP files are used to store bitmap images in a simple and uncompressed manner. Introduced by Microsoft in the 1980s as a standard image format for use with their Windows operating system, the format has evolved over the years and is still relevant today.

Due to the uncompressed nature of BMP files, they can quickly grow in size when using high resolutions. Modern formats such as PNG and JPEG can be used as an alternative when dealing with larger images or images where transparency is a requirement (PNG only).

The BMP format supports different pixel colour depths, allowing creators to minimise file sizes if their content has a lower colour depth. Due to their age and popularity, BMP files can be opened in most modern image editing applications without requiring conversion tools.

Repairing a BMP File

BMP Image File Header Data

The data contained within a BMP image file is binary, and it is the first sequence of bytes within the file that contains the header data for the image, which contains information such as image width, height, colour depth, palette, and other metadata.

Knowing how this header data is formed and what the header data should be for each individual file type allows our tool to not only ensure the file is using the correct file extension but also that all the expected pixel data is present and correct.

Pixel Colour Depth and Palettes

Certain image file formats (oftentimes, but not always, older formats), such as BMP, can store pixel data using a reduced number of bits per pixel. For regular full-colour images, these are stored at 24-bits per pixel (1 byte per RGB channel, equating to roughly 16 million colours). Storing pixels using reduced bits per pixel can help reduce the final file size, and older legacy hardware was often limited by the colour depth of their displays anyway, making this practice worthwhile.

Palettes are also commonplace, allowing a limited number of colours to be used from the full 16 million colour space. The BMP often does this to significantly reduce file size while retaining pixel and colour detail. During the validation and repair process, our tool will not alter the pixel colour depth or, if present, any palette used by the image.

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