Compare Binary Streams
See the difference between two binary blobs of bytes. Runs entirely in your browser, so your data never leaves your device.
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Output
The result appears here as you type.
How to use Compare Binary Streams
- 1. Paste the two streams. Enter the first binary sequence on one line and the second on the next line. The tool aligns them from the first bit and compares position by position.
- 2. Read the difference markers. Below the two streams, a caret line marks every column where the bits disagree, and a final count reports how many positions differ. Comparing 1111 with 1010 flags two mismatched bits.
- 3. Copy the diff report. Copy the aligned streams with their markers into a bug report or commit message so others can see precisely which bits changed.
When to use Compare Binary Streams
Compare Binary Streams is a diff tool for raw bits. It answers two questions at once: where exactly do two sequences disagree, and how many bits separate them, which is the Hamming distance. That beats scanning parallel strings by eye every time the data is more than a few bits long.
- Locating corruption after transmission. A payload came out of a radio link slightly wrong. Diff the sent and received bitstreams to see whether errors cluster in bursts, which points at interference, or scatter randomly.
- Measuring Hamming distance for coursework. Coding theory assignments constantly ask for the distance between codewords. Paste both words and the differing-bits count is your answer, with the marker line as supporting work.
- Verifying a bit-level round trip. After encoding data and decoding it back, compare the original stream against the round-tripped one. Zero differing bits proves the pipeline is lossless; anything else pinpoints the damage.
- Debugging off-by-one shifts. When a stream diff shows nearly every bit differing, the culprit is often misalignment rather than corruption. The caret pattern makes a one-bit shift easy to recognize.
Examples
Diff two streams
Input
1111 1010
Output
1111 1010 ^ ^ Differing bits: 2
About the Compare Binary Streams tool
Compare Binary Streams does its work locally, right in the browser. See the difference between two binary blobs of bytes. 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
Does Compare Binary Streams cost anything?
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?
No data leaves your device. The whole tool is JavaScript that runs inside your browser tab, so there is no upload, no server-side processing and no log of what you did. If you disconnect from the internet after the page loads, it keeps working.
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?
Nothing to install and no account needed. Open the page in any up-to-date browser, including on a phone or tablet, and the tool is ready.
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.