Compare Two Texts.
Find Every Difference Instantly.
Paste, upload, or drag-and-drop your texts. TextCompare highlights additions, deletions, and changes line-by-line, word-by-word, or character-by-character — in real time.
Compare Any Two Texts in 3 Steps
Paste or Upload
Type, paste, or drag-and-drop your original and modified texts into the two panels. Supports files up to 2 MB.
Choose Options
Select line, word, or character diff. Toggle ignore case, whitespace, or blank lines to refine your results.
Review Differences
Added lines appear in green (+), removed in red (−), changed in amber (~) with intra-line highlights.
Export or Share
Copy results, download as .txt or .html, or generate a shareable URL to send your comparison to a colleague.
Everything a Diff Tool Should Have
Built for writers, developers, editors, and anyone who needs to track changes accurately and quickly.
Side-by-Side & Unified Views
Switch between a split view showing both texts simultaneously and a unified view showing all changes in one stream.
Line, Word & Character Diff
Three diff granularities let you zoom in from broad line changes down to the exact characters that were modified.
File Upload & Drag-and-Drop
Upload .txt, .md, .json, .csv, .js, .py, .html, and 20+ other formats directly. No pre-processing needed.
Real-Time as You Type
The diff updates automatically as you type, with smart debouncing to keep the interface fast and responsive.
Shareable URL Links
Generate a compressed URL that encodes your comparison. Share it with anyone — they see your exact texts and results.
100% Private — No Server
Every comparison runs entirely in your browser. Your text is never sent to any server. Confidential documents stay confidential.
Built for Every Comparison Need
Compare Code Changes
Review patches, spot regressions, compare config files, and audit code changes without opening a full IDE. Supports 20+ file types with monospace rendering.
Track Document Revisions
Compare draft versions of articles, reports, and contracts. Word-level diff shows exactly what was added, removed, or changed between revisions.
Audit Document Versions
Identify changes between contract versions, policy documents, or regulatory filings. Private, browser-only processing for sensitive material.
Check for Plagiarism Patterns
Compare essay drafts, spot repeated passages, and ensure original content across multiple versions. Free and instant — no account required.
Frequently Asked Questions
Paste your original text in the left panel and your modified text in the right panel. TextCompare highlights differences automatically in real time. You can also drag and drop text files (.txt, .md, .json, and more) into either panel. The comparison updates as you type.
Yes — completely free, no account, no login, and no subscription required. There are no usage limits or text size restrictions (beyond 2 MB for file uploads). All processing happens in your browser.
Line diff compares entire lines. A line is either equal, added, removed, or modified. This is the default and best for most use cases.
Word diff additionally highlights which words within modified lines have changed. Ideal for spotting small wording changes in long lines.
Character diff shows the exact characters that changed within modified lines. Most granular — useful for typo detection and precise edits.
No. All comparison happens entirely in your browser using JavaScript. Your text never leaves your device. Only your preference settings (not your text) are saved in your browser's local storage. TextCompare is safe to use with sensitive or confidential documents.
Yes. The main tool supports any plain text including code. For a code-optimized experience (tab expansion, monospace-first layout, ignore-whitespace defaults), try the Code Diff Checker. For JSON-specific formatting and key-aware comparison, use the JSON Diff Checker.
Click the Share button after running a comparison. TextCompare compresses your texts and options into a URL and copies it to your clipboard. Anyone with the link can view the exact same comparison — no account required. For texts larger than ~50 KB, use the download option instead.