Ascii85 Encoder and Decoder
encoding
Encode text or uploaded files as Adobe Ascii85, or decode Ascii85 back to binary. It all runs in your browser, so your input stays on the device.
Encode bytes with Bitcoin-alphabet Base58 or Base58Check, or decode them back. Supports optional Base58Check version-byte validation.
Runs in your browser — your input is processed on this device and never uploaded.
Base58 represents bytes with the Bitcoin alphabet, which omits visually ambiguous characters. Base58Check adds a four-byte checksum and can include a version byte. Neither format encrypts the data.
Choose a Base58 or Base58Check operation, then enter text or upload a file in Input. For decoding, paste the encoded text into the same field. Decoded Base58Check output includes the version byte when one is present.
The optional version byte applies only to Base58Check. On encode it is prepended before checksumming. On decode it is validated against the encoded value.
Plain Base58 inputs are limited to 1 MiB of decoded data and 3 MiB of encoded text. Base58Check remains limited to 4 KiB and 8 KiB respectively. A valid checksum detects accidental changes but does not authenticate the sender.
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encoding
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Encode bytes as whole-value Base62, or decode Base62 text back to bytes. Choose either supported digit and letter ordering.
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Drag a file here, or click to upload.
Max size 60 MB
Upload is optional.