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What is an ISO file?
An ISO file is a single-file copy of an entire disc, including its file system and boot data. You don't copy it onto a disc — you 'burn the image' so the disc becomes an exact replica of the original.
Every other burner is a program you install. cdBurner isn't: it runs in your browser with one tiny background helper, and it's free. Open the burner →
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Why cdBurner is different
Every other burner is a program you install. cdBurner isn't: it runs in your browser with one tiny background helper, and it's free.
- 100% free — no trial, no watermark, no nag screens.
- Private — files are written locally and never uploaded to a server.
- No bloatware — one small signed helper, not a heavy install.
- Built on Windows' native IMAPI2 engine, so your discs read everywhere.