AZ Tools

Walk a .webp file’s RIFF chunks in your browser: lossy, lossless or extended, canvas versus frame size, animation timing, alpha, ICC, Exif and XMP.

Split a .mbox archive in your browser: message boundaries, decoded headers, MIME structure, threads and duplicate Message-IDs. Nothing is uploaded.

Walk an .ogg, .oga or .opus page by page: granule positions, segment tables, CRC32 checks, and the logical streams the container carries.

Read an .xz container: stream header, every block header and filter chain, the index and the footer — with the true uncompressed size, unpacking nothing.

Read a .a archive in the browser: members with sizes and dates, the symbols each object defines and needs, and whether the symbol index has gone stale.

Decode an OCSP response or request in your browser: status, responder, freshness, nonce, revocation reason and the certificates it carries.

Read a .npy or .npz header in the browser: dtype, shape, byte order, field layout and a value preview, with no NumPy and no upload.

Read a .gz header field by field, walk every member, and verify the trailer by recomputing CRC32 and the real size in your browser.

Paste an .editorconfig and some file paths: see the property set each file resolves to, and which section on which line decided every value.

Read a compiled GNU gettext .mo catalogue in your browser: byte order, header, every msgid and translation, contexts, plural forms and untranslated strings.

Open a .pyc from __pycache__ in your browser: which CPython wrote it, timestamp or hash invalidation, the code object tree and the disassembly.

Disassemble a .pkl file in the browser: every opcode, the memo, the value it rebuilds, and whether loading it would run code.