Decode Gzip Base64
Paste a Base64 string — with or without GZIP compression — and decode it instantly. Supports URL-safe encoding, data URIs, and auto-detects JSON output.
The Decode Gzip Base64 tool decodes any Base64 string and automatically decompresses GZIP payloads — no configuration needed.
It handles URL-safe Base64 (- / _), missing padding, data URIs, and URL-encoded strings out of the box. After decompression, JSON output is rendered as an interactive tree view.
All processing happens entirely in your browser using the pako library — nothing is ever sent to a server.
- 1Decoding GZIP-compressed payloads from IoT platforms (FIWARE, AWS IoT, Azure IoT Hub)
- 2Inspecting API gateway responses compressed and encoded in Base64
- 3Debugging NGSI-LD or NGSI-v2 attribute values sent over HTTP
- 4Decoding URL-safe Base64 tokens from OAuth2 and OIDC flows
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