Gzip Decompress Online

Paste base64 or hexadecimal gzip data and decompress it into readable text in the browser.

Compression tool

Decompress gzip data

Result

Enter a value or load the sample to see the result.

Hex to CMYK CMYK to Hex Pantone to CMYK Pantone to Hex RGB to HSL

Guide

About this gzip decompress tool

Decompress base64 or hexadecimal gzip data online using the browser DecompressionStream API.

What it does

Gzip is widely used for HTTP responses, logs, archives, API payloads, and compressed text samples. When a gzip value has been copied as base64 or hexadecimal, it is not easy to read without a decoder. This page gives you a focused way to decompress the payload in the browser.

When to use it

The tool accepts base64 gzip data and even-length hexadecimal gzip data. It uses the browser DecompressionStream API when available, so the work happens locally in the page. That makes it convenient for quick debugging, documentation, and inspection of small compressed payloads.

How it works

This page is not meant to replace archive software for large files. It is designed for pasted strings, short examples, encoded API fields, and small diagnostics. If the compressed bytes are valid gzip and the decompressed content is text, the output area will show the readable result.

Practical note

Be careful with unknown compressed data. Decompression can expand a small input into a much larger output. For everyday development checks, keep the input reasonably small and avoid pasting sensitive production data unless you understand your environment.

Quick reference

Decompress gzip data

Input

H4sIAAAAAAAAA/NIzcnJVyjPL8pJAQBSntaLCwAAAA==

Output

Decompressed text: / Hello world

How to use

Paste or enter the value you want to process.
Click Convert to run the tool.
Review the output and copy the result you need.

Best for

API debugging
Log inspection
Compressed text checks
Small payload review

Compression format notes

Wrapper matters

Gzip, zlib, and raw deflate are related but not interchangeable. A payload can fail simply because it is using a different wrapper.

Encoded input

The page is designed for pasted base64 or hexadecimal strings, not large binary archives or files.

Browser support

Decompression uses browser-native APIs when available. Older browsers may not expose the required stream support.

Common mistakes