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SAI BMP
File conversion

Convert SAI to BMP

Verified by Adam B.· reviewed by FE Editorial ·updated Jun 25, 2026
QUICK ANSWER
Is it possible to convert SAI to BMP?
Yes - SAI converts to BMP.

Open your .sai file in PaintTool SAI and choose File > Export As > BMP. All layers are merged and any transparency is filled with white. Unless a specific workflow requires BMP, exporting to PNG gives the same lossless quality at a much smaller file size.

1 programs
Also to BMP: QOI · XPM · PPM

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Tested on macOS, Windows & Linux
Last verified Oct 2026

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Why convert SAI to BMP?

BMP is sometimes required by older Windows software or hardware that expects uncompressed raster data and will not accept PNG. The .sai format is proprietary, so PaintTool SAI is the only path to any export. .bmp stores pixels uncompressed, producing large files with no quality advantage over PNG.

How to convert SAI to BMP

Paint Tool SAI APP

Open the .sai file, go to File > Export As and choose .bmp. SAI exports a flat 24-bit RGB bitmap with all layers merged and no compression.

Programs that convert SAI

Paint Tool SAI

About these formats

.SAI PaintTool SAI Image

A SAI file is a layered painting document created by PaintTool SAI, a digital art program from SYSTEMAX Software Development. Only PaintTool SAI can open it - no other mainstream app reads…

Open .SAI details →
.BMP Windows Bitmap Image

A BMP file is a Windows Bitmap - a simple, usually uncompressed raster image developed by Microsoft. Every major OS and image viewer opens it with no extra software (double-click works).…

Open .BMP details →

Quality & what to watch

  • All layers are merged on export; BMP is a flat format with no layer support - keep the original .sai to preserve editability.
  • BMP does not support transparency: any transparent canvas areas are filled with white on export.
  • BMP files are very large - a 3000x4000 px image exports to roughly 34 MB as BMP versus 2-5 MB as PNG; prefer PNG unless BMP is specifically required.

Frequently asked questions

Can I convert SAI to BMP without PaintTool SAI?
No - the .sai format is proprietary and encrypted; no other software or online converter can read it.
Will my layers be preserved in the BMP?
No - BMP is a flat format; all layers are merged on export. Export to .psd instead if you need to keep layers.
Why is my BMP file so large?
BMP stores pixels uncompressed, so file sizes are much larger than PNG for the same image; export to PNG unless BMP is specifically required.
What happens to transparent areas when exporting to BMP?
BMP does not support transparency - transparent areas are filled with white on export.