What is a Base64 gzip checker?
A Base64 gzip checker decodes the first bytes of a Base64 payload and looks for the gzip magic header 1F 8B. It helps identify compressed API payloads, logs, and exported data.
How to use it
- Paste the Base64 string.
- Review whether the gzip header was detected.
- Use the first-byte hex output to continue debugging if needed.
Example
Input: H4sIAAAAAAAA/w==
Output: gzip header detected: yes
Common mistakes
- This tool detects gzip headers but does not decompress the payload.
- Some compressed formats are not gzip.
- A false result can happen if the string is truncated.
Related tools
- Inspect bytes with Base64 to hex.
- Decode unknown payloads with Base64 to file.
- Validate copied input with the Base64 validator.
Privacy and security
The header check runs locally in your browser.