Compare two texts line by line.

Paste a before and after version of a file, log, or config to see every line that changed.

Text to compare

Before

After

Result

Line differences

text
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- Copy or download results.
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Processed locally — inputs and results stay in this browser tab. Copy and download actions run only when you choose them.

More Signalbench tools

Small tools for stubborn bugs.

Format JSON, inspect JWT claims, explain cron expressions, and compare text locally in your browser.

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Format and validate JSON without leaving your browser.

Format, indent, and validate JSON locally in your browser, with a clear error message when the syntax is invalid.

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Decode a JWT and read its claims.

Decode a JSON Web Token locally to read its header and payload claims — decoding a JWT is not the same as verifying it.

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Understand any cron expression at a glance.

Parse a five-field cron expression and see the minute, hour, day, month, and weekday fields explained in plain language.

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Encode and decode Base64 without breaking Unicode.

Encode UTF-8 text as Base64 and Base64URL or decode canonical data back to Unicode text.

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Encode URL components without confusing + and %20.

Encode and decode UTF-8 URL components or HTML form values locally.

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How the comparison works

Lines are compared by position: line 1 against line 1, line 2 against line 2, and so on. Inserting or deleting a single line shifts every line after it, which can make a small edit look like a larger change than it is.

Unchanged lines are shown with no marker.
Removed lines are marked with a minus sign.
Added lines are marked with a plus sign.

Signalbench

Inspect, transform, and debug data without sending it away.

Tools

Home Format and validate JSON without leaving your browser.Decode a JWT and read its claims.Understand any cron expression at a glance.Compare two texts line by line.Encode and decode Base64 without breaking Unicode.Encode URL components without confusing + and %20.

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