Guest workspace
Compress a File
Use the normal lossless single-file workflow. Results are temporary and are not added to history or permanent storage.
Drag & drop file here
or
Select FileIn-scope inputs include PDF, TXT, CSV, TSV, JSON, SQL, XML, HTML, HTM, LOG, and source code (PY, JS, C, CPP, H, and HPP). Accepted files are restored exactly. Microsoft Word DOCX-family files are outside the declared study scope and are not accepted for new compression.
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Account access includes additional compression, Queue and Batch, AFCPAK archives, history, and stored results.
Compression Complete
Original
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Compressed
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Space Saved
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Compression Ratio
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Compression Time
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Backend Used
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Verification
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Shannon entropy (order-0)
Computed from this file's byte histogram (Shannon, 1948); it is a measured bound, not a prediction. It is the limit of coding one byte at a time, which structural blocks routinely exceed because a byte histogram cannot represent multi-byte repetition.