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Base64 Encoder / DecoderData URL Encoder / DecoderHTML Escape / UnescapeNumber Base ConverterPEM / DER ConverterText to BinaryText to UnicodeURL Encoder / Decoder

Made withby Shashank Dubey

© 2026 Shashank Dubey. All rights reserved.

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Encoding

PEM / DER Converter

Convert PEM blocks into DER base64 or hex, and rebuild normalized PEM from raw binary encodings.

Quick context
  • Runs entirely client-side with no server dependency.
  • Built for copy-paste workflows and fast iteration.
  • Optimized for desktop and mobile editing sessions.
pemderhex

Source input

Paste PEM, raw base64 DER, or hexadecimal DER depending on the selected input mode.

Blocks
1
Label
CERTIFICATE
DER size
843 bytes

Normalized PEM

Base64 DER

Hex DER

Hex output is ungrouped to keep it easy to paste into other tooling.