AkousaDeflate Raw Decompress
Decompress raw Deflate data (no zlib header).
About Deflate Raw Decompress
Deflate Raw Decompress restores data compressed with raw Deflate (RFC 1951) — without a zlib header or Adler-32 checksum — back to its original readable form. This variant is distinct from standard Deflate decompression and is required when working with formats like PNG IDAT chunks, PDF FlateDecode streams, and custom binary protocols that use headerless Deflate. Attempting to decompress raw Deflate with a standard zlib decompressor will fail, making this dedicated tool necessary for debugging those specific formats.
How to Use
Paste the Base64-encoded raw Deflate data — extracted from a PDF content stream, PNG chunk, or custom protocol frame — into the input field and click Decompress. The tool applies RFC 1951 decompression without expecting zlib framing bytes and displays the restored original content. If you receive a header or checksum error, your data likely uses standard zlib-wrapped Deflate; in that case switch to the Deflate Decompress tool instead.
Common Use Cases
- PDF forensics analysts extracting and decompressing raw FlateDecode content streams from PDF objects to read embedded text, JavaScript, or embedded file payloads
- Image processing developers decompressing raw Deflate IDAT scanline data from PNG files to inspect pixel data or color values without a full image parsing library
- Protocol reverse engineers decoding compressed payloads from custom binary network protocols that use raw Deflate without the standard zlib two-byte wrapper
- Developers debugging raw Deflate decompression failures by testing compressed data against this reference implementation to isolate whether the issue is in the data or the code
- Security researchers analyzing obfuscated malware samples that use raw Deflate to compress shellcode or configuration data before a custom in-memory decompression stub