developer Overview

Verify real file types across 35+ binary magic-byte signatures, measure byte-stream Shannon entropy, search hex/ASCII offsets, and inspect or package `.zip` archives locally.
Open the free Archive, GZIP & Binary Studio
No account required · Runs in your browser · Instant results
Archive & File Studio reads `ArrayBuffer` slices directly in memory so suspicious or corrupted attachments can be triaged without extracting files onto your operating system.
Quick tip: Compare the detected magic header against the filename extension whenever a media or PDF upload fails validation.
Yes. Drop multiple files, inspect compression ratios, and download a clean `.zip` archive locally.
Access all features of the Archive, GZIP & Binary Studio — free, browser-based, no account required.
Open Archive, GZIP & Binary StudioMerge, split, reorder and watermark PDFs in your browser. Convert pages to images or Word, fill forms, and remove metadata locally. No upload required.
Compute MD5/SHA-1/256/384/512 text & file checksums, sign HMACs, benchmark & verify bcrypt hashes, encrypt with PBKDF2 AES-256-GCM, and generate RSA-OAEP/ECDSA PEM & JWK keypairs.
developer Overview
