Diffchecker

The online diff tool to compare text, images, PDFs, and spreadsheets.

Open Diffchecker

Free web diffing; Desktop Pro at $6/month with offline mode and folder comparison.

Comprehensive Overview

What is Diffchecker?

Diffchecker is the standard web utility for spotting changes between two versions of text or code. It highlights additions, deletions, and inline character modifications with clear color-coded syntax. It also supports comparing graphic images (with split swipe sliders), PDF documents, and structured Excel tables.

Technical Specifications

Pricing ModelFreemium

Requires SignupNo (Instant)

Execution RuntimeClient-Side (In-Browser)

PlatformsWeb, Desktop, API

DeveloperDiffchecker Inc.

Last Verified2026-08-23

Supported Formats:

TXTCODEJSONPDFXLSXPNGJPG

Editorial Assessment

Pros & Strengths

Instant comparison with zero latency
Color-coded character highlights make minute punctuation typos obvious
No registration needed for quick text comparisons

Limitations

Desktop offline app and PDF diff require Pro plan
Banner ads on free web view

Supported Tasks & Workflows

Diff Checker & Text Compare Online Markdown Editor JSON Formatter & Validator

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