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Have a tool idea, bug report or improvement to suggest? Send a clear message with context, the relevant page and the expected result.

Requests

Why contact us?

The most useful messages are precise: page, observed issue, target audience, example or link.

Content and documentation

Report an unclear explanation, a translation to improve or information that needs updating.

Tool suggestion

Suggest a new generator, validator, converter or calculator for a frequent need.

Bug or UX improvement

Report incorrect behavior, a mobile issue, calculation error or workflow improvement.

Security and privacy

Share an observation related to data, local processing, secrets, files or security.

Form

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The information you send is used only to process your request and reply to it.

By sending this form, you agree that OnSubmit uses the submitted details only to answer your request. Read the privacy policy.

FAQ

Frequently asked questions

Why contact OnSubmit?

You can contact OnSubmit to suggest a tool, report a bug or propose a content or accessibility improvement.

How is my message used?

It is used only to process your request and reply to it. The privacy policy explains the applicable retention period.

How should I report a content correction?

Include the page, the relevant passage, the proposed correction and a reliable source when possible.

How can I suggest a new free tool?

Describe the need, target audience, formats to support, examples and related OnSubmit tools.

How should I report a security issue?

Choose the Security topic in the form and include useful reproduction steps. Do not include real secrets in the message.

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