Design binary wire protocol frames visually. Add named fields with bit/byte widths, choose endianness, and see a precise byte-level layout diagram. Export as C struct, Rust struct, or other language definitions.
Open Binary Packet Frame Designer → free, no sign-inDesigning binary wire protocols requires precise byte-level thinking: field names, widths, endianness, alignment, and offsets all have to be right before you write a single line of code. The Binary Packet Frame Designer lets you build protocol frames visually — drag in fields with names and bit widths, choose endianness, and see a live byte-layout diagram with offsets — then export directly as a C struct, Rust struct, or other language definitions.
Embedded systems engineers, network protocol developers, and anyone working at the intersection of hardware and software who designs binary message formats will save significant time by visualising the layout before implementing it.
No tutorials. No learning curve. Open it and get started.
No server uploads. Exports code in multiple languages simultaneously — C, Rust, and others — so the design step and the implementation step happen together.
Completely free. No trial period. No premium tier for basic functionality. No account required. Use it as often as you need.
One job, done well. Binary Packet Frame Designer was built to solve a specific problem cleanly. No feature bloat, no ads, no distractions.
What is a binary wire protocol?
A binary wire protocol is a format for transmitting structured data as a sequence of bytes — common in embedded systems, network protocols, and hardware interfaces.
Can I specify individual bit fields?
Yes — fields can be specified in bits, not just bytes.
What languages are supported for export?
C and Rust are supported, with other language definitions available.
Does it handle alignment automatically?
The layout diagram shows the exact byte layout including any alignment constraints for the chosen field widths.
Is this suitable for learning about binary protocols?
Yes — the visual layout makes the byte-level structure immediately clear.
Free. Instant. No sign-in. Open it and get the job done.
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