One clear page per tool
Each generator, validator, converter or calculator has its own page to open the right tool quickly and read useful context.
Structured catalog · free tools · workflows
Why OnSubmit exists
OnSubmit groups free tools around concrete tasks: generate, validate, convert, compare, calculate and prepare test data without wasting time.
38 tools 6 categories 5 useful workflows
Principles
A catalog designed around real usage
OnSubmit favors direct tools, concrete examples and useful links between related tasks.
Workflows instead of lists
Workflow pages connect tools used together: test data, banking data, invoicing, security/hash or data conversion.
Useful explanations
Definitions, FAQs, tables, best practices and internal links help users understand formats, limits and common mistakes.
Simple browser-based processing
When the task allows it, the tool runs directly in the browser to reduce friction.
Comparison
OnSubmit vs a generic tools directory
| Need | OnSubmit | Generic directory |
|---|---|---|
| Find a precise tool | Dedicated tool page, search and category | Long list with little context |
| Understand the right workflow | Workflow pages and related suggestions | Isolated tools without internal links |
| Avoid bad test data | Fictitious values, warnings and coherent examples | Short copy or interface-only pages |
| Save time on a short task | Open, paste, generate, validate or convert | Slow navigation or tools hard to rediscover |
Examples
Useful workflows for everyday tasks
Some needs require several small tools. OnSubmit connects them so users can continue the logical next step after generation, validation, conversion or calculation.
- Test a banking form: fake RIB, IBAN/BIC, fake identity and UUID.
- Prepare a test invoice: VAT, SIRET/SIREN and fake banking details.
- Clean API data: JSON, CSV, YAML, TypeScript, Base64 and diff.
FAQ
Frequently asked questions about OnSubmit
Why does OnSubmit create one page per tool?
A dedicated page makes each tool easy to open directly, share precisely and understand through focused explanations.
Why organize tools by workflow?
Users often need to complete a full scenario, such as testing a banking form, preparing an invoice or generating a QA dataset.
Do OnSubmit tools replace official services?
No. OnSubmit tools are for tests, quick checks, mockups and indicative calculations. Official, fiscal, banking or legal workflows require trusted sources.
Why keep tools free instead of creating user accounts?
Most OnSubmit use cases are short operational tasks. The goal is to open, paste, generate, validate, convert or calculate quickly.
Why are related tools important?
Related tools help users continue natural workflows. A fake RIB can be complemented by an IBAN/BIC validator, fake identity and UUID reference.