Download and install the latest version of Filestar.
Right click on one or more Bw file(s) on your desktop and select Convert with Filestar.
Type convert to apng in the search box.
Press Convert.
Or let an AI agent do it: filestarcli -i photo.bw -c "convert to apng" (how).
Documents - File Explorer─☐✕
This PC › Documents
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.bwContract.bw
.xlsxBudget.xlsx
.pdfReport.pdf
.pngLogo.png
Filestar*Help✕
Drop files here to get started
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Let your AI agent convert BW to APNG
Claude Code, Codex, Cursor and other agents can do this on your computer with Filestar. Your files stay on your machine.
Install Filestar and add it to your agents:
npm install -g filestar
filestarcli agent install
Then ask your agent:
“Convert the BW files in my Downloads folder to APNG”
Or run it yourself:
filestarcli -i photo.bw -c "convert to apng"
Runs on your computer, so your files stay on it. Works on Windows, macOS and Linux. 50 free conversions with the npm install, no account needed.
Can my AI agent convert BW to APNG?
Yes. Install the Filestar CLI with npm install -g filestar and your agent can run filestarcli -i photo.bw -c "convert to apng" on your computer, so your files stay on it.
The bw file type is associated with Silicon Graphics RGB, a bitmap image format developed by Silicon Graphics, Inc. (SGI). It is specifically designed for grayscale images, utilizing a single channel to represent varying shades of black and white. The format is known for its use in graphics and visualization applications, especially in environments where Silicon Graphics workstations were prevalent. BW files are capable of storing high-quality images with efficient compression, making them suitable for both professional graphics work and scientific visualization.
Animated Portable Network Graphics (APNG) is a file format which extends the Portable Network Graphics (PNG) specification to permit animated images that work similarly to animated GIF files, while supporting 24-bit images and 8-bit transparency not available for GIFs. It also retains backward compatibility with non-animated PNG files.
