Text Compare Tool

Compare two text files or text blocks instantly. See additions, removals, modified lines, and unchanged lines with side-by-side comparison, highlighted editor panes, file upload, and downloadable reports.

Text Compare Controls

Compare two versions of text with diff highlighting directly inside both editors and a detailed side-by-side comparison below.

Ignore whitespaceIgnore caseShow only differences below

The editors also highlight changed lines immediately on both sides.

Upload left text file

Upload right text file

Left text184 chars · 1 lines

Right text207 chars · 1 lines

Unchanged

Added

Removed

Modified

Visible rows

Side-by-side comparison

Full row-by-row comparison of the left and right inputs.

Status

Left

Content

Right

Content

removed

Project: SmartTools Status: Active Owner: Dev Team Environment: Production Theme: Light Version: 1.0.0 Notes: - Regex tester shipped - YAML converter shipped - Diff checker in progress

added

Project: SmartTools Status: Active Owner: Developer Team Environment: Production Theme: Dark Version: 1.1.0 Notes: - Regex tester shipped - YAML converter shipped - Diff checker shipped - JWT decoder shipped

Included features

Changed lines highlighted directly in both editor panes.
Side-by-side comparison with line numbers and row status.
Summary counts for added, removed, modified, and unchanged lines.
Ignore whitespace and ignore case options.
Optional hiding of unchanged lines in the comparison table.
Upload text-based files on both sides, swap inputs, and download reports.

What can this text compare tool do?

This tool compares two versions of text, highlights changed lines directly inside both editors, shows a side-by-side comparison table, summarizes differences, and lets you upload, copy, or download comparison data quickly.

Common use cases

Use it for document revision checks, draft comparison, notes comparison, log review, config updates, content editing, and general text-based difference checking before publishing or deployment.