Editorial and testing methodology

Last reviewed: June 8, 2026

PlainPDF documents what its tools actually do. Explanations are based on the current product implementation and are written to help people decide whether a tool is appropriate before selecting a file.

How tool claims are verified

1. Review the processing path used by the current tool implementation.
2. Confirm supported file types, file-size limits, output behavior, and known failure conditions.
3. Describe limitations explicitly, including tasks the tool does not perform.
4. Check that privacy and security statements match the implemented browser-side processing model.

What PlainPDF does not claim

• No guaranteed compression ratio or target file size unless the implementation can enforce it.
• No claim that a typed signature is a certificate-backed digital signature.
• No claim that unavailable tools can process files.
• No invented benchmark results, usage figures, reviews, or expert credentials.

Content updates

Pages are reviewed when product behavior or editorial guidance changes. The visible review date and structured data date are updated together. Material changes should also update the XML sitemap date.

Future benchmark reporting

When repeatable benchmark results are available, PlainPDF will publish the test files or clear descriptions of them, browser and device conditions, expected outputs, measurements, and failures. Until then, the site reports implementation-backed capabilities rather than estimated performance.