Free Text Processing Tools

5 professional tools for analysis, deduplication, conversion, diff, and replacement
No downloads, browser-based, privacy-safe

Why choose our text tools?

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Fast processing

Optimized algorithms for large files

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Privacy-safe

Local processing, no uploads

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Free forever

All features are free

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Cross-device

Desktop, phone, and tablet ready

Professional Text Tools

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Word Count

Analyze keyword frequency with stop-word filtering and export

Keyword densityStop-word filterMultilingualExport results
Use case:Ideal for SEO, content analysis, and research
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Text Deduplication

Remove duplicate lines or comma-separated items while keeping order

Line dedupeComma dedupeKeep orderSmart detection
Use case:Perfect for data cleanup and list management
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Aa

Case Converter

5 case conversion modes with live preview and one-click copy

5 modesLive previewOne-click copyBatch processing
Use case:Great for coding, formatting, and standardization
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Text Diff

Compare two texts with line/word diffs and highlighted changes

Line diffWord diffHighlightsDetailed report
Use case:Useful for version checks and proofreading
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Batch Replace

Batch replace with regex, live preview, and multiple rules

RegexBatch rulesLive previewUndo/redo
Use case:Ideal for editing, refactoring, and data processing
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Best-fit Scenarios

Content creators

Dedup, keyword analysis, formatting

Recommended tools:
Word CountText DeduplicationCase Converter

SEO specialists

Density analysis, content diff, bulk updates

Recommended tools:
Word CountText DiffBatch Replace

Data analysts

Cleanup, normalization, duplicates

Recommended tools:
Text DeduplicationBatch ReplaceCase Converter

Developers

Code diff, bulk refactors, formatting

Recommended tools:
Text DiffBatch ReplaceCase Converter

FAQ

Which text formats are supported?

Plain text, rich text, and HTML. Works with Chinese, English, numbers, and symbols.

Is there a file size limit?

Large files are supported. We recommend under 100MB per run for best performance.

How do I save results?

All tools support copy and export. Save as TXT or CSV as needed.

Do you support batch processing?

Yes, you can process multiple text blocks or apply multiple rules in one run.