PES to RB Converter

Convert PES images to RB documents online

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Intuitive Design

No learning curve needed. The PES to RB converter guides you through each step with a streamlined, beginner-friendly interface.

Pixel-Perfect Output

Image data from your PES file transfers to RB with maximum accuracy. The converter prioritizes faithful reproduction of the source.

Remote Processing

Your device stays responsive while PES files convert to RB on dedicated cloud servers. All processing happens remotely.

How to convert PES to RB

1

Select files from Computer, Google Drive, Dropbox, URL or by dragging it on the page.

2

Choose rb or any other format you need as a result (more than 200 formats supported)

3

Let the file convert and you can download your rb file right afterwards

About formats

PES is a machine embroidery file format developed by Brother Industries, used primarily with Brother and Babylock home and semi-professional embroidery machines. The format stores complete embroidery designs including stitch coordinates, color sequence information, and design metadata within a structured binary file. Unlike the minimalist DST format, PES files embed thread color data — specifying both the color sequence and palette references — so the machine displays correct thread colors on its LCD panel without manual configuration. PES version numbers have evolved alongside Brother's PE-Design digitizing software, with each release supporting additional machine features like larger hoop sizes, more color stops, and enhanced stitch types. The format handles standard stitch movements, jump stitches, trim commands, and color change markers, with coordinate precision suitable for detailed reproduction. One advantage is embedded color information — when a PES file loads on a compatible machine, it displays the complete color sequence and thread recommendations, streamlining setup. The tight integration with Brother's PE-Design software is another strength, providing a complete workflow from design creation through machine embroidery output with auto-digitizing, lettering tools, and stitch simulation. PES is among the most popular formats in the home embroidery community, supported by major digitizing software and widely available through online design marketplaces.
Developer: Brother Industries
Initial release: 1997
RB is the native ebook format of the Rocket eBook, one of the first commercially available dedicated e-reading devices, developed by NuvoMedia and released in October 1998. Founded by Martin Eberhard and Marc Tarpenning — who later co-founded Tesla Motors — NuvoMedia designed the Rocket eBook as a handheld device with a reflective LCD screen, capable of storing approximately ten books in its internal memory. The RB format packages HTML-based content along with embedded images, metadata, and a table of contents into a single binary container optimized for the device's limited hardware. Content was purchased and downloaded through NuvoMedia's RocketLibrarian desktop software. A notable advantage of the format was its early support for bookmarking, annotation, dictionary lookups, and adjustable font sizing — features now standard on modern e-readers but revolutionary in the late 1990s. The Rocket eBook demonstrated viable commercial demand for dedicated reading devices, paving the way for subsequent platforms from Sony, Amazon, and others. NuvoMedia was acquired by Gemstar-TV Guide International in 2000, which discontinued the device line in 2003. While RB files are largely a historical curiosity today, they can be converted to modern formats using ebook management tools, and the format remains significant as a pioneering chapter in the evolution of digital reading.
Developer: NuvoMedia
Initial release: 1998

Frequently Asked Questions

Why convert PES to RB?

Placing PES images into RB format lets recipients view them in standard document readers — far more accessible than raw PES files.

What programs open RB files?

Standard document viewers handle RB files — Microsoft Office, LibreOffice, Adobe Reader, or Calibre for e-book formats.

Where do PES files come from?

PES files come from Brother embroidery machines and design software. They contain stitch patterns, thread colors, and layout data for sewing.

How is image quality handled during conversion?

The converter extracts full image data from PES and encodes it into RB at the highest quality the target format allows. No unnecessary loss.

Do I need to install anything?

No installation needed — the conversion happens entirely online. Open the converter in any modern web browser and your device handles the rest.