Decompress Gzip-compressed data provided as a Base64 string and retrieve the original text. Useful for debugging gzip-encoded API responses and browser cache.
Key Features
Decompresses Base64-encoded gzip payloads back into plain text
Server-side Gzip decompression over HTTPS; input is not stored
Auto-detects invalid gzip headers and corrupted Base64 input
Reveals original payload size and decompressed expansion ratio
How to Use
Paste your Base64-encoded gzip string into the input box.
Click "Decompress Gzip" to inflate the payload.
Inspect the reconstructed plain text in the output panel.
Copy the decompressed content or download it as a file.
Input should be a Base64-encoded string representing the binary gzip archive (typically beginning with "H4sI" in Base64 due to the standard 0x1F 0x8B gzip header).
Can this tool decompress .gz files directly?
You can load a .gz file or paste its Base64 representation to decompress and view its textual contents online.
Is decompressed data sent to a server for decoding?
Decompression runs on our server over HTTPS. Input is processed in memory and is not stored or logged.
Privacy notice: when you run this tool, your input is sent over HTTPS to our server, processed in memory and returned. It is not stored or logged. Avoid pasting live secrets such as private keys or passwords.