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GZIP Compressor & Decompressor

Compress UTF-8 text or exact file bytes to GZIP, or decompress .gz files and Base64-encoded GZIP data locally in your browser.

Local input limit: 5 MB · Processing timeout: 8 s

SSH / OpenSSH Inspector workspace

Inspect OpenSSH keys, authorized_keys, known_hosts, certificates, and private-key envelope metadata locally. No SSH or network operation is performed.

Private-key material is never included in results or handoffs.

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GZIP bytes, header, and decoded content in one view

GZIP wraps DEFLATE-compressed bytes with a small RFC 1952 header and a CRC32/size trailer. DecodeLens keeps the exact bytes available while exposing the fields that help diagnose API payloads, backups, logs, and downloaded .gz files.

Supported input and safety rules

  • Compresses UTF-8 text and exact file bytes with the browser-native GZIP stream implementation.
  • Decompresses a .gz file or Base64-encoded GZIP input and validates its header, CRC32, and stored size.
  • Decompressed bytes use the shared file detector, preview, text, hex, metadata, and download views.
  • Concatenated multi-member GZIP, password protection, TAR extraction, and recursive decompression are not performed in this version.
  • Output size, expansion ratio, worker time, and memory use are limited to keep the browser responsive.

Related tools for this workflow

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