Hex viewer

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All tools › Bytes

Hex viewer

Bytes with their offsets and a text column, and what the header says.

It runs entirely in this browser tab: the documents you paste are never uploaded, and the tool makes no network request while it works. Open your browser's network panel and try it — nothing leaves the page.

What it takes

Bytes as hexadecimal or Base64, or the text itself — whichever the setting names.

An example

89504e470d0a1a0a0000000d49484452000000100000001008060000001ff3ff61000000097048597300000b1300000b1301009a9c18

Settings

Read the bytes as
The framework's input is a text area, so binary arrives written down. Choices: Hex, Base64, Plain text.
Bytes a row
Sixteen is what a dump has looked like for fifty years. A number from 4 to 32.
Start at
The offset the dump begins at, in bytes. A number from 0 to 1000000.
Contains
Plain text, matched anywhere in the line.

How to use it

  1. Paste your text into the box above, or open a file.
  2. Adjust the settings beside it until the result is what you wanted.
  3. Copy the result, or save it as a file. The result updates as you type.

Questions

Is what I paste uploaded anywhere?
No. The whole tool is carried as WebAssembly and runs on your own device. That is the point of the group: the files these tools are for are exactly the ones you would not paste into somebody else's server.
How big a file can it take?
About a megabyte, and it says so rather than truncating quietly. Past that you are handing it a database rather than a document, and the input here is a text area — the editing view is capped at forty thousand characters and says so, though the tool still reads all of what you gave it.
Why does it say it guessed?
Because it did. Which format a document is, which delimiter a table uses and whether the first row is a header are all decided by looking at the text. Each guess is right almost always and each is printed on the result, because a converter that guessed silently and got it wrong would eat a file.
Does it change my numbers?
No. A number keeps the text it was written as, all the way through: `1.0` stays `1.0` and a thirty-digit identifier stays thirty digits. Nothing here is ever a floating-point value, which is why a sorted document differs from the original only where you asked it to.

Other tools for bytes

Binary file diff
Byte for byte, with the offset and length of every differing run.

Base64 inspector
Decodes a string and says what kind of file it turned out to be.

Protobuf decoder
A message split into field numbers and values, without its schema.

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