Text Diff Checker

Compare two texts online by line, word or character. Highlight additions and deletions in drafts, code and JSON, preserving spaces and line breaks. No account needed.

Compare
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Result

Your result will appear here.

How to compare two texts

  1. Paste the original into the first input and the updated version into the comparison input.
  2. Choose lines for code or lists, words for prose, or characters for small spelling and number changes.
  3. Run the comparison and review the highlighted additions and deletions. Change the mode and compare again for a different level of detail.

Working with Text Diff Checker

Line comparison works well for source files and configuration changes; character comparison helps find small edits. Input is compared literally, including whitespace. Very large or complex comparisons are stopped to keep the browser responsive.

Comparing two versions of a text

Input
Input First line Second line Third line Compare with First line Updated line Third line
Result
[ { "value": "First line\n", "count": 4, "kind": "unchanged" }, { "value": "Second", "count": 1, "kind": "removed" }, { "value": "Updated", "count": 1, "kind": "added" }, { "value": " line\nThird line", "count": 6, "kind": "unchanged" } ]

Questions about Text Diff Checker

Should I compare by line, word or character?

Line mode highlights whole changed lines, useful for code, logs and lists. Word mode narrows changes within sentences and retains whitespace. Character mode helps locate a changed digit or letter. Emoji and combining marks may contain several code points; use the Unicode inspector when their appearance is misleading.

Does the comparison ignore spaces, line endings or letter case?

No. Spaces, tabs, line endings and letter case remain part of the comparison. Text that looks identical may contain different invisible characters. Word mode is not a language-aware grammar analyser. If an entire line is highlighted, try character mode to find the smaller difference.

Can I compare JSON or source code?

Yes, as pasted text. JSON is compared as text, not as equivalent data: indentation and key order can produce differences. Format both inputs with the same JSON settings first if you want a cleaner comparison. This tool does not execute code, validate program behaviour or automatically merge changes.

Can I compare Word or PDF files and download a Git patch?

This page compares two pasted text inputs; it does not extract content from Word or PDF files. Copy and download provide the structured change list as JSON text, not a Git patch or a merged document. Large or very different inputs may hit a size or time limit; compare smaller sections instead.

Are my files, tokens or text uploaded?

No. These tools process your input in your browser. The website serves the page and its code, but your input is not sent to a conversion server or saved in an account.

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Encode any file to a Base64 string, with optional Data URI prefix, padding and MIME line wrapping.

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Turn Base64 strings and Data URIs back into downloadable files without changing the decoded binary data.

URL Encoder & Decoder

Encode and decode URL components, complete URLs and form values. Handle percent escapes and spaces correctly.

HTML Entity Encoder & Decoder

Convert text and Unicode characters to HTML entities, or decode named and numeric HTML character references.

Unicode Inspector & Escape Converter

Inspect Unicode code points, UTF-8 bytes and UTF-16 units, or convert JavaScript Unicode escapes to readable text.

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Read structured data, inspect tokens and understand exactly what changed.

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Check file integrity, generate identifiers and make sense of times and recurring schedules.

MD5 Hash & File Checksum

Calculate an MD5 hash for text or a local file, and compare it with an expected checksum.

SHA-1 Hash & File Checksum

Calculate SHA-1 hashes for UTF-8 text or files and compare the result with an expected checksum.

SHA-256 Hash & File Checksum

Generate SHA-256 hashes for text or files and check a downloaded file against its published checksum.

SHA-512 Hash & File Checksum

Calculate SHA-512 text and file hashes locally and compare full hexadecimal checksums.

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Calculate standard CRC-32 checksums for text or files and compare eight-character hexadecimal results.

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Validate five- or six-field Cron expressions and list upcoming runs in an IANA time zone, including daylight-saving changes.

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Build a Cron expression from time fields or common presets, then preview its next scheduled times in your chosen zone.

Your input and files are processed on your device. Keep sensitive results out of shared clipboards and use a trusted device for private keys and tokens.