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How it works
- 1
Upload your PDF
Drag and drop or browse to select the PDF file you want to decompress.
- 2
Inflate all compressed streams
The tool inflates every compressed stream in the PDF, converting binary data back to human-readable text.
- 3
Review size change and download
See the original and decompressed file sizes. The decompressed file will be larger — that's expected, since compressed binary data is expanded to plain text.
Features
- Full stream decompression
- Every compressed stream in the PDF is inflated to plain text. This makes content streams, font data, and embedded resources readable in a text editor.
- Size comparison
- After decompression, a summary shows the original and decompressed file sizes with the percentage increase, so you know how much data was compressed in the original.
- Developer and debugging tool
- Decompressed PDFs let you inspect raw page content streams, analyze font embedding, debug rendering issues, or learn how PDF files are structured internally.
Frequently asked questions
- What is PDF decompression?
- PDFs store content in compressed binary streams to reduce file size. Decompression inflates those streams back to plain text, making the internal structure readable for debugging or analysis.
- When would I need to decompress a PDF?
- Decompression is useful when debugging PDF rendering issues, inspecting content streams, analyzing font embedding, or learning how PDF files are structured internally.
- Will the decompressed file look different when opened?
- No. The visual appearance is identical. Only the internal storage format changes — compressed binary streams become plain text that you can read in a text editor.
- Is my file uploaded to a server?
- No. All processing runs locally in your browser using WebAssembly. Nothing is uploaded.