Skip to content

BMP to PNG converter

  • Runs on your device
  • Works offline once loaded

BMP files are uncompressed, so they are huge. Converting to PNG keeps every pixel and typically shrinks the file by 80 percent or more. Drop as many as you like.

How it works

  1. Drop HEIC, WebP, AVIF, GIF or BMP files.
  2. Choose the output format, quality and maximum size.
  3. Download the results as a ZIP.

Why use it

  • Lossless, much smaller.
  • Bulk conversion.
  • Transparency kept.
  • Local processing.

Questions and answers

Does converting BMP to PNG lose quality?

No. PNG is lossless, so the pixels are identical.

Why are BMP files so big?

They store raw pixels without compression.

Related guides

Images6 min read

JPG, PNG, WebP or AVIF: which format to use

We saved six photos and a graphic in all four formats at the same visual quality and compared the sizes. The newer formats win on photos by a wide margin, but each format still has a job.

Privacy and security6 min read

Do online converters upload your files?

Most online converters send your file to a server; some do the work in your browser instead. Here is how to tell which kind a site is in about a minute, and what every request looked like when we converted a photo on our own site.

Esc