Aspect Ratio Calculator
Keep image, video, and layout dimensions proportional while resizing.
Built for quick debugging
Developer tools avoid unnecessary setup and keep common snippets, tokens, and test data in your browser where possible.
Quick workflow
- Paste the value, snippet, command, or sample data.
- Run the parser, generator, tester, or converter.
- Copy the result and continue with the suggested next tool.
Useful tip
Chain small tools together: decode, inspect, format, compare, and generate types from the same data.
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Mock Data Generator
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Password Generator
Generate strong random passwords with custom rules
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Query HTTP status codes
Breadcrumb Trail Generator
Enter breadcrumb names and URLs, then generate review-ready BreadcrumbList JSON-LD for launch SEO.
CSV to JSON
Convert CSV data to JSON format
EXIF Viewer
Inspect image file metadata and EXIF presence locally
Article Schema Validator
Paste Article, BlogPosting, or NewsArticle JSON-LD and check headline, dates, image, author, publisher, and page binding before publishing.