OwnFile

Convert BMP to JPG

Free, unlimited BMP to JPG conversion that runs inside your browser. Your files never leave your device. Every conversion runs locally in your browser.

No upload · No sign-up · No file limit

or drop them here

Processed on your device · never uploaded · no limit

This converter needs JavaScript, because the conversion runs on your device rather than on a server.

BMP files are effectively uncompressed, so a single photograph can easily run to 20 MB or more. Converting to JPG typically cuts that by 95% or more with no visible difference, which is usually the entire reason for doing it — BMP files are too large to email, upload, or store in any quantity.

Before you convert: JPG uses lossy compression, so a small amount of detail is discarded to save space. At the default quality this is not visible on photographs, but sharp text and flat colour can soften slightly.

How to convert BMP to JPG

  1. Select your BMP files. Click "Choose BMP files" or drag them onto the box above. You can select as many as you like at once.
  2. Wait for the conversion. Each file is converted to JPG on your own device. Nothing is uploaded, so it finishes as fast as your hardware allows.
  3. Download the results. Download files individually, or take them all at once as a single ZIP archive.

BMP vs JPG

  BMP JPG
Full name Bitmap Image File Joint Photographic Experts Group
Introduced 1986 1992
Compression Uncompressed Lossy
Transparency No No
Animation No No
Extensions .bmp, .dib .jpg, .jpeg, .jpe

About BMP files

BMP is a Microsoft format that stores pixels essentially raw, with little or no compression. The result is perfect fidelity and files that are frequently ten to fifty times larger than an equivalent JPG — a modest photograph can easily exceed 20 MB. It persists mainly in legacy Windows software, scanning utilities, and industrial equipment that never moved on.

Where they come from: Legacy Windows applications, scanners, and industrial software.

Drawbacks of BMP

  • Enormous file sizes
  • No transparency in the common variants
  • Effectively obsolete for web or sharing use

Why convert to JPG?

JPG (also written JPEG) has been the default photographic format since 1992 and remains the most universally supported image format in existence. It uses lossy compression tuned for photographs, discarding detail the human eye is least likely to notice. Every operating system, browser, printer, and photo kiosk on the market reads it without complaint.

  • Opens on literally any device or application
  • Small files for photographic content
  • Adjustable quality-to-size tradeoff

Support: Universal. Supported in every browser ever shipped.

Common questions

Are my files uploaded to a server?

No. The conversion runs entirely inside your browser using your own device’s processor. Your BMP file is never transmitted, never stored, and never seen by us — you can disconnect from the internet after the page loads and it will still work.

Is there a file size or daily limit?

There is no daily limit and no account required. Because your device does the work rather than our server, we have no per-conversion cost to recover. The practical ceiling is your device's available memory — very large files on older phones may fail, in which case convert them in smaller batches.

Can I convert several BMP files at once?

Yes. Select or drop as many BMP files as you like and they are converted one after another, then offered as individual downloads or a single ZIP.

Will the quality drop?

JPG is a lossy format, so some data is discarded. We default to a high quality setting where the difference is not visible on normal viewing, and you can raise or lower it before converting.

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