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How to clone a disc
Cloning makes an identical disc: cdBurner reads the source to an image and writes it back out, preserving the contents exactly.
cdBurner copies a disc in two stages: it reads the source into an ISO image on your PC, then writes that image back to a blank disc. The result is a faithful, end-to-end duplicate. It works only with discs that aren't copy-protected.
What you'll need
- A Windows 10 or 11 PC with a CD, DVD or Blu-ray writer (internal or external USB).
- A blank disc with room for the disc you want to clone.
- The disc you want to clone.
- The free cdBurner burn agent — a one-time, 2-second install.
Step by step
Connect the burn agent
Open onlinecdburner.com and connect the burn agent.
Rip the source to an ISO
Insert the disc you want to clone and rip it to an ISO image.
Insert a blank disc
Swap in a blank disc of the same type.
Burn the ISO
Write the saved image back — you now have an exact copy.
Tips for a clean burn
- You get a standard ISO image — keep it as a backup or burn it to a fresh disc anytime.
- Copy only discs you own that aren't copy-protected; cdBurner does not remove CSS or AACS protection.
- Use a quality blank and a moderate speed when you write the copy back for the most reliable result.
Common mistakes to avoid
- Trying to copy a copy-protected disc — cdBurner won't bypass protection.
- Using a different disc type for the copy than the original.
- Writing the copy at too high a speed on cheap media.
Why cdBurner is different
cdBurner is the only disc burner that runs entirely in your web browser — there is genuinely nothing else like it online.
- 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.
Frequently asked questions
Is this legal?
Copying discs you own for personal backup is generally fine. cdBurner only works with unprotected discs — it does not remove CSS or AACS copy protection.
What do I end up with?
A standard ISO image of the disc that you can archive or burn to a blank disc whenever you like.
Is cdBurner really free?
Yes — completely free and ad-supported. No trial, no watermark and no paid tier.