Diagram showing a BMP file converting into a TIFF file inside a browser window

Image guides

How to Convert BMP to TIFF in Your Browser

Converting a BMP image to TIFF produces an uncompressed 8-bit RGBA TIFF suited to print production, scanning, and archival master copies. This guide covers the steps and what to know about transparency and file size.

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Step-by-step conversion

  1. Open /tools/bmp-to-tiff.
  2. Choose a BMP file — the content is validated before conversion, not just the filename or extension.
  3. Select Convert & download.
  4. Save the .tiff file from your browser downloads.

Transparency and file size

Output is uncompressed 8-bit RGBA, so an alpha channel from the source is preserved. Because the file is uncompressed, it can be several times larger than the source.

Source-specific behavior

Transparency is kept only when the browser decodes a real alpha channel from the source BMP; most BMP files have no transparency at all.

Privacy

Conversion runs locally in your browser. The file is not uploaded to Looty Tools servers for this workflow.

Convert BMP to TIFF FAQ

Why would I need TIFF instead of BMP?
Print shops, scanning pipelines, and archival workflows often specifically require TIFF as the master format.
Does the source BMP actually have transparency?
Rarely. Most BMP files have no alpha channel. When the browser does decode real alpha data from a 32-bit source BMP, it is preserved in output formats that support transparency.
Does TIFF output keep transparency?
Output is uncompressed 8-bit RGBA, so an alpha channel from the source is preserved. Because the file is uncompressed, it can be several times larger than the source.
Are my files uploaded?
No. Conversion runs locally in your browser and does not upload your file to Looty Tools servers.
What is validated before conversion?
The file must actually be a BMP — the tool checks the ‘BM’ header bytes, not just the filename or extension, before decoding.

Related guides

Open the tool

Jump into BMP to TIFF when you are ready to process your files.

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