Romeolight SoftwareRomeolight BPGconv

The world's smallest size image file format

We want to deliver a revolutionary image file format to all people. In order to have more people use the BPG file format, we have developed high-efficiency conversion technology. BPGconv is an application that can do batch conversions of JPEG/PNG files to BPG. It can also convert BPG files into a variety of other file formats.

What's the BPG?

BPG (Better Portable Graphics) is an image file format that Fabrice Bellard was developed. It has achieved a higher than JPEG compression rate in most cases.

Approximately half the size of the JPEG

JPEG: 54.8 Kbytes (Q=75)

BPG: 13.7 Kbytes (Q=28)

Achieve efficient conversion with batch processing

BPGconv can convert multiple JPEG or PNG files into BPG files at once. The conversion processes run parallel to each other, so they can be completed in a shorter time. You can also visually confirm the change in file size from before and after the conversion.

Functional layout and intuitive operation

The application screen is made up of a single screen. It is designed so you can complete all operations without the need to go back and forth between multiple windows. You can switch between encoding (JPEG/PNG to BPG) and decoding (BPG to JPEG/PNG) using tabs.

Option Menu

In the option menu, you can perform a variety of settings for BPG file. Since the options menu is in the same window, it can quickly be opened when needed.

Change Log

2015-04-12: Version 2.5 [Latest]
- Add "Save as" option
- Add "Auto" option for encoding
2015-03-10: Version 2.4
- Bug fix
2015-03-10: Version 2.3
- Supports x265 HEVC encoder
- Add File Open Button
- Show progress status on the Windows task-bar
2015-02-12: Version 2.2
- Reduces CPU load while converting.
2015-01-18: Version 2.1
- Supports Color space and Chroma format
- Supports meta data management
2015-01-15: Version 2.0
- Supports Bit Depth
- Supports Limited rage
2014-12-25: Version 1.0
- 1st version released.