# Text Data Decompressor

Advanced text decompression tool that can restore compressed text using RLE, LZ77, Huffman decoding, and more

> Canonical page: https://elysiatools.com/en/tools/text-data-decompressor

- **Category:** Text Processing

- **Keywords:** text decompression, data decompression, file decompression, rle, lz77, huffman, decoding, 文本解压, 数据解压, 算法解压

## Overview

The Text Data Decompressor is a powerful utility designed to restore compressed text strings to their original, readable format using industry-standard algorithms like RLE, LZ77, and Huffman decoding.

## Inputs

- **Compressed Text** (textarea): Enter the compressed text data that you want to decompress back to original form
- **Decompression Algorithm** (select): Choose the decompression algorithm or use auto-detection
- **Decompression Data (Optional)** (textarea): Required for Huffman decompression. Paste the tree data generated during compression.
- **Input Encoding** (select): Choose the encoding of your compressed input
- **Enable Auto-Detection** (checkbox): Automatically detect the compression algorithm when "Auto-Detect" is selected

## When to use

- When you need to restore text that was compressed using Run-Length Encoding (RLE) or LZ77 algorithms.
- When you have encoded data strings that require Huffman decoding to reveal the original content.
- When you need to quickly decode Base64 or Hex-encoded compressed data back into plain text.

## How it works

- Paste your compressed text into the input field.
- Select the appropriate decompression algorithm from the dropdown menu, or enable 'Auto-Detect' to let the tool identify the format.
- Specify the input encoding (Raw, Hex, or Base64) to ensure the tool interprets the data correctly.
- Provide any necessary auxiliary data, such as a Huffman tree, if required by the specific algorithm, and click to decompress.

## Use cases

- Restoring log files or configuration data that were compressed to save storage space.
- Decoding data payloads received from legacy systems that utilize RLE or LZ77 compression.
- Reconstructing text from Huffman-encoded data streams for analysis or debugging.

## Frequently asked questions

### Does this tool support all compression formats?

It supports common algorithms including RLE, LZ77, Huffman, and Base64 decoding.

### What should I do if the auto-detect feature fails?

If auto-detection fails, manually select the specific algorithm used during the compression process.

### Is Huffman decompression always possible?

Huffman decompression requires the original tree data or mapping table used during compression to successfully reconstruct the text.

### Can I decompress Hex or Base64 encoded strings?

Yes, select the corresponding 'Input Encoding' option to ensure the tool decodes the format before applying the decompression algorithm.

### Is my data stored on your servers?

No, all decompression processes are performed locally in your browser to ensure your data remains private.

## Related tools

- [Text Data Compressor](https://elysiatools.com/en/tools/text-data-compressor): Advanced text compression tool using multiple algorithms including RLE, LZ77, Huffman encoding, and more
- [Text Compressor](https://elysiatools.com/en/tools/text-compressor): Compress text by removing extra spaces, newlines, and unnecessary whitespace while preserving content structure
- [Text Template Engine](https://elysiatools.com/en/tools/text-template): Fill text templates with variables and data using various template formats
- [Title Case Converter](https://elysiatools.com/en/tools/title-case-converter): Convert text to editorial-quality Title Case using AP, Chicago, or Wikipedia style rules. Lowercases function words, capitalizes first/last words and after colons, handles hyphenated compounds.
- [Upside-Down Text](https://elysiatools.com/en/tools/upside-down-text): Flip text upside-down (ɥǝllo) with per-letter rotations, plus optional toggles to keep reading order and protect URLs/emails. Plain Unicode text, no font needed.
- [Advanced Duplicate Line Remover](https://elysiatools.com/en/tools/advanced-duplicate-line-remover): Detect and remove duplicate lines with advanced options for mode, case sensitivity, and trimming
- [ASCII Art Generator](https://elysiatools.com/en/tools/ascii-art-generator): Convert text to ASCII art using various fonts and styles
- [Bold & Italic Text](https://elysiatools.com/en/tools/bold-italic-text): Convert text to bold, italic, or bold-italic using the Mathematical Alphanumeric Symbols Unicode block. Plain Unicode text — no font needed.

## Samples

- [Text with Emoji Samples](https://elysiatools.com/en/samples/text-with-emoji-samples): Mixed language text containing various Unicode emojis for testing emoji extraction
- [Text with Sensitive Data Samples](https://elysiatools.com/en/samples/text-with-sensitive-data-samples): Text containing various types of sensitive data for testing data masking (phones, emails, ID cards, bank cards)
- [Chinese-English Mixed Text Samples](https://elysiatools.com/en/samples/text-chinese-english-mixed-samples): Sample text files with mixed Chinese and English content for testing automatic spacing tools
- [Text Case Format Samples](https://elysiatools.com/en/samples/text-case-formats): Examples of different text case formats: camelCase, snake_case, kebab-case, PascalCase, and more