Duplicate Bits in Bytes
Replace each bit with two bits in each byte. Runs entirely in your browser, so your data never leaves your device.
0 chars · 0 lines
Output
The result appears here as you type.
How to use Duplicate Bits in Bytes
- 1. Paste the bits to expand. Enter a binary string such as 10 in the input pane. Multiple values on separate lines are all processed, and anything that is not a 0 or 1 is flagged rather than silently skipped.
- 2. Watch each bit become a pair. Every bit is written twice in place, so 10 grows into 1100 and 1011 becomes 11001111. The order never changes; the string simply doubles in length with each bit repeated.
- 3. Copy the widened output. Use the copy button to take the doubled bit string into your project. Because the mapping is exact, you can undo it later by collapsing each pair back to a single bit.
When to use Duplicate Bits in Bytes
Duplicate Bits in Bytes stretches a bit string by writing every bit twice, a trick that shows up more often than you would expect. It is the core of Manchester-style expansions, pixel doubling in 1-bit graphics, and clock-rate conversions where each symbol must occupy two slots. Doing it by hand invites transcription errors; this does it exactly.
- Scaling 1-bit sprite rows horizontally. Retro game graphics stored as binary rows can be doubled in width by duplicating every bit. Run each row through the tool to produce a 2x-wide version of the sprite.
- Prototyping a line-coding scheme. Some serial encodings represent each data bit as two identical channel bits before further transformation. Expand your payload here to inspect what the doubled stream looks like ahead of simulation.
- Matching a double-rate sampling clock. When a receiver samples at twice the transmit rate, each sent bit appears twice in the capture. Duplicate your reference pattern to compare it against the oversampled trace directly.
- Creating stress-test patterns. Fuzzing a parser that expects fixed-width fields sometimes calls for inputs with long runs. Doubling bits turns a short varied pattern into one with guaranteed pairs for boundary testing.
Examples
Duplicate
Input
10
Output
1100
About the Duplicate Bits in Bytes tool
Duplicate Bits in Bytes does its work locally, right in the browser. Replace each bit with two bits in each byte. There is no upload step, no queue and no account, and your data never travels over the network.
It belongs to the Binary Tools collection on EditSafely, a set of 112 small, focused Binary utilities that share the same instant, private workspace.
There is nothing to configure. Provide the input and the result appears on its own. A worked example further down the page shows exactly what the tool produces for a real input.
Running locally also makes the tool fast and dependable: results appear as you type or drop a file, there is no server outage that can take it down mid-task, and confidential data can be processed without a second thought.
Frequently asked questions
Is Duplicate Bits in Bytes free to use?
Yes, it is completely free. All 2,658 tools on EditSafely work without an account, a subscription or usage limits.
Is it safe to paste sensitive or confidential data?
Everything happens locally. Your browser downloads the tool's code once, then does all the processing itself; nothing you enter is transmitted, stored or logged. You can even go offline after the page loads and it will still work.
How much text can I process at once?
There is no fixed limit. Because the work happens on your own device rather than on a shared server, the practical ceiling is your machine's memory, which comfortably handles inputs far larger than typical online tools allow.
Do I need to sign up or install anything?
No. The tool works in any modern browser on desktop, tablet or phone. There is no account to create, no extension to add and no software to install.
How do I use the result?
The output panel has a one-click copy button, and you can keep refining the input while you work; the result updates in place as you type.