Utilitários

Codificador Base64

Codifique e decodifique Base64 online.

Fatos principais

Base64 turns arbitrary bytes into 64 safe characters. Paste text to get a Base64 string or decode a string back. It runs on the server, supports UTF-8 and accepts both the standard and the URL-safe alphabet (- and _), with optional padding. It is not suitable for files and images.

Preço: Grátis
Cadastro: Não é necessário
Processamento: On our server: the pasted text is sent by POST and encoded or decoded with PHP’s base64_encode and base64_decode (strict mode)
Entrada: Text (for decoding, a Base64 string in the standard alphabet)
Limites: No sign-up; the tool itself sets no rate or length limits, only the server’s request-size limits apply; files and images are not supported
Resultado: A Base64 string or the decoded text in a read-only field; a Copy button; on error, an “invalid Base64 string” message
Última atualização: 2026-10-26

Codificador / decodificador Base64

Codifique e decodifique dados no formato Base64. Usado para transmitir dados binários em protocolos de texto, incorporar imagens em CSS/HTML e trabalhar com APIs.

Codificação de texto em Base64

Decodificação de Base64 para texto

Suporte a UTF-8

Como usar

Cole um texto ou uma string Base64 no campo de entrada
Escolha uma operação: codificar ou decodificar
Copie o resultado

FAQ

Base64 represents arbitrary bytes with 64 printable characters (A–Z, a–z, 0–9, + and /) so they can travel safely in text: in JSON, XML, headers and emails. It is encoding, not encryption.

Paste the string, choose decode mode and click the button. If the string is valid you see the original text; spaces and line breaks are ignored and missing trailing “=” signs are accepted.

Most often the string has characters outside the standard alphabet, such as “-” and “_” from Base64URL (as in JWTs). Replace “-” with “+” and “_” with “/” and try again.

Yes, text is encoded as bytes, so Cyrillic, Polish and Ukrainian letters are handled correctly. When decoding, the result is shown as UTF-8 text.

No, the tool works only with pasted text. Files, images and data URIs need tools with file upload.

PromoPilot vs. alternativas: comparação

Comparamos apenas o que está confirmado nas páginas de cada serviço. Onde não conseguimos confirmar um dado, a célula mostra "—".

Parâmetro	PromoPilot	Base64 Encode (base64encode.org)	Base64.Guru	CyberChef (GCHQ)
Text encoding and decoding	✓	✓ with a choice of charset from a long list	✓ encoders and decoders for text, hex, URL, CSS, HTML	—
Files, images, PDF	✗	✓ a file upload form for binary data	✓ images, PDF, audio, video, files	—
Funciona sem enviar nada a um servidor	✗	—	—	✓ “no server-side component”; can be run locally
Base64URL (URL-safe)	✗	—	Separate tools such as “Normalize Base64” and “Base64 Standard Detector”	—

Role a tabela para os lados

Onde somos mais fracos: text goes to our server, there is no file or image support and no charset choice.

Quando escolher o PromoPilot: When you want to quickly encode or decode a short text string (a token, JSON, a header fragment). For files, images or handling secrets without sending them to a server use other tools.

Verificado em: 2026-10-16. "—" significa que não foi confirmado na página oficial; condições e preços mudam, então confira os sites dos próprios serviços.