Learn How File Formats Work

Explore the byte structure of real files to understand formats.

Sem login necessárioArquivos permanecem privados

Arraste arquivos aqui ou clique para procurar

Any file sem limite de tamanho de arquivo

Procurar arquivos

Seus arquivos nunca saem do seu dispositivo. Todo o processamento acontece localmente no seu navegador.

Inspect the raw bytes of any file — offset, hex, and ASCII columns, like a classic hex editor. The file is read locally and never uploaded.

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🎓

Compare the headers of a PNG, a PDF, and a ZIP to see how formats announce themselves.

🔢

Seeing real bytes alongside ASCII makes format specs much easier to follow.

🧩

A hands-on way to understand magic numbers and headers.

🔒

Experiment freely — nothing is uploaded.

Escolher arquivo

Drop your file into the tool above. It stays entirely on your device — nothing is sent to any server.

Processar

The tool processes your data instantly in your browser using JavaScript. No server, no waiting.

Baixar

Get your result instantly. Nothing is stored after you leave the page — complete privacy.

✓Completamente gratuito — sem custos ocultos, jamais

✓Sem conta, e-mail ou login necessário

✓Arquivos nunca saem do seu dispositivo

✓Sem limites de tamanho de arquivo

✓Sem marcas d'água em nenhuma saída

Identify a File's Real Type

Check a file's magic number to see what it actuall

Debug a Binary File

Inspect headers and bytes while debugging a file f

Find Text Strings in a File

Spot readable text embedded in a binary file.

Inspect a Suspicious File Safely

Examine an unknown file's bytes without opening or