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The OnSubmit catalog lets you search by format, need or entity: JSON, PDF, UUID, fake RIB, IBAN/BIC, test card, SIRET, VAT, timestamp, cron, Base64 or SHA256.
FAQ · free tools · test data
Frequently asked questions about OnSubmit
Find clear answers about free tools, browser processing, fictitious data, tool workflows, suggestions and contact.
12 questions 38 tools 6 categories 5 workflows
Topics
Browse questions by topic
The FAQ covers tool usage, data handling, choosing tools and contacting OnSubmit.
FAQ
Using the tools
What free tools are available on OnSubmit?
OnSubmit groups generators, validators, converters and calculators for development, PDFs, images, text, finance, test data and QA workflows.
How can I search for a tool quickly?
Use the catalog page to search by name, format, need, keyword or business entity. Try fake RIB, IBAN, JSON, PDF, UUID, Regex, VAT or SIRET.
Why are some tools linked together?
Related tools reflect real workflows. A banking test can combine a fake RIB, IBAN/BIC validator, test card, fake identity and UUID.
FAQ
Data and privacy
Are inputs sent to a server?
When processing is compatible with the browser, data stays on your device. OnSubmit prioritizes local processing for simple conversions, validations and generators.
Can I paste production secrets or tokens?
Avoid pasting real secrets into any public tool. For JWT, hashes, .env files and passwords, use test values or anonymized data.
Are generated RIB, IBAN, cards or identities real?
No. Fictitious data is for mockups, forms, fixtures, QA tests and demos. It should not represent a real person, company or bank account.
FAQ
Catalog and tool choice
Why does every tool have its own page?
A dedicated page makes the tool easy to open directly, share with a precise link and understand through focused explanations.
What is the difference between a category and a workflow?
A category groups tools in the same domain, such as PDF, images or finance. A workflow groups tools used together for a complete task.
Which tools help test a form?
A complete form test can combine fake identity, fake address, UUID, fake SIRET/SIREN and fake RIB depending on required fields.
FAQ
Contact and suggestions
How can I suggest a new tool?
Use the contact page and describe the need, target users, formats to support, examples and related OnSubmit tools.
Can I report a bug or UX issue?
Yes. The contact page is for bugs, calculation errors, mobile issues, content improvements and useful links between tools.
Can a page or workflow be sponsored?
Yes. Sponsorship can apply to a tool page, category or workflow when it is clearly identified and useful to the audience.