Convurter
Developer And Data Tools

CSR Decoder

Decode a certificate signing request locally in your browser.

Local PEM, CSR Developer And Data Tools

Waiting

Runs in your browser. Files do not leave your device.

Input

CSR Decoder. Decode only. Trust, ownership, and signatures are not verified. Nothing is sent to a server.

Details

How this works

Check CSR fields

Paste a PEM CSR and inspect the subject, public key, and subject alternative names.

Input 
-----BEGIN CERTIFICATE REQUEST-----
Output 
Subject, public key, and SAN report
Edge cases
  • Some CSRs do not include SANs.
  • This does not prove private key ownership.
Accuracy
  • The tool decodes CSR structure only.
  • Submission to a certificate authority is outside this tool.
Privacy
  • CSR text is processed locally and is not logged.

Guide

How to use CSR Decoder

Step-by-step

  1. Choose or enter pem, csr in the workbench.
  2. Run the inspection tool locally in your browser.
  3. Review the csr-report result, then copy or download it if the workbench offers that action.
  4. Use the related tools on this page for cleanup, validation, conversion, or the next step in the workflow.

Questions

Is CSR Decoder free to use?

Yes. The public tool is free to use in your browser.

Are my files uploaded?

No. This tool runs locally in your browser, so selected files or pasted input are not uploaded to Convurter.

What should I check before using the csr-report result?

The tool decodes CSR structure only. Review the final output before using it in production work.

What can I do after this?

Good next steps include Certificate Decoder, SHA-256 Hash, and Password Strength Checker.

Workflow fit

Use CSR Decoder in the right place

If you are unsure, start from the data chooser and pick by shape: validate, convert, infer schema, export, decode, or clean.

Best for

  • Developer and data cleanup where validation, formatting, schema inference, export, or local transformation is more useful than a static explanation.
  • Preparing JSON, CSV, XML, YAML, TOML, NDJSON, URLs, hashes, certificates, or web text for another tool or system.
  • A focused inspect task where the expected output is csr-report.

Before you start

  • This tool runs in the browser, so keep the tab open until the result is created and downloaded or copied.
  • Validate syntax before conversion so malformed input does not become a confusing output problem.
  • Remove secrets, credentials, production tokens, private customer data, and unnecessary identifiers before using any shared browser session.
  • Know the target system requirements: delimiter, encoding, columns, date format, schema, or workbook expectations.
  • Use the report as a decision aid, then route to cleanup, conversion, or verification tools if it finds something notable.

Quality checks

  • Treat inspection output as a signal report, not as a guarantee that every possible issue was checked.
  • Review row counts, keys, columns, nesting, encoding, and empty values after conversion.
  • Use schema inference or validation before handing structured data to another workflow.
  • For hashes and decoders, remember that readable output is not proof of trust or authenticity.
  • Copy or download the result only after confirming the displayed output matches the task you intended.

Common mistakes

  • Exporting to XLSX or CSV before flattening the data shape can hide nested values or create ambiguous columns.
  • Treating JWT, certificate, or CSR decoding as verification. Decoding is not the same as validating trust.
  • Assuming format conversion preserves comments, ordering expectations, or every data type nuance.
  • Closing the tab before downloading or copying a browser-generated result.
  • Treating the first result as final without checking the destination requirement.

Verify or clean up

Use these when the output needs checking, cleanup, comparison, compression, or a final share-ready pass.

URL Parser

Next

Certificate Decoder CERTIFICATE-REPORT SHA-256 Hash HASH Password Strength Checker STRENGTH-REPORT URL Parser URL parts JWT Decoder JSON Cron Expression Parser SCHEDULE-REPORT