Can I convert multiple PEM files at once?

Yes! Drag multiple files into the converter for batch processing. All files convert simultaneously and can be downloaded as a ZIP archive.

What's the maximum number of files I can convert at once?

Free users can convert several files per batch. PRO users enjoy unlimited batch sizes. For very large batches, your device's memory is the only practical limit.

Why choose DER over other formats?

DER Certificate offers compact binary encoding, used by Java and Windows. It's widely used for Java KeyStore, Windows certificate store and binary cert distribution, making it an excellent choice for most certificate needs.

Will my PEM file be deleted after conversion?

No. Your original PEM file is never modified or deleted. Xonvert creates a separate DER copy — your source file remains untouched.

What certificate quality settings should I use?

Default settings are optimized for the best balance of quality and file size. Adjust only if you have specific requirements.

Does this work on my phone or tablet?

Yes. Xonvert works on any device with a modern browser — iPhone, iPad, Android phones and tablets all supported.

Can I undo a conversion?

Since your original PEM file is never modified, there's nothing to undo. Your source file remains exactly as it was — only a new DER copy is created.

Convert PEM to DER

Fast, free, and secure PEM to DER conversion. No registration required.

pem

Certificate

der

Certificate

Fast, free, and secure PEM to DER conversion. No registration required.

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Related Conversions

High Quality

Maintain maximum quality during conversion

Fast Processing

Convert files in seconds with our optimized engine

Secure & Private

Files automatically deleted after conversion

How to Convert PEM to DER

Upload PEM File

Click the "Select File" button to upload your pem file from your device.

Start Conversion

Click the "Convert" button to instantly start converting to DER.

Download DER

Download your converted der file immediately after processing.

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