Developer Tools
Client-side developer utilities designed for privacy and speed. No sensitive tokens or code snippets ever touch a server.
- JSON Formatter & ValidatorFormat, minify, and validate JSON data.
- Base64 Encoder / DecoderEncode and decode Base64 strings and UTF-8 text.
- URL Encoder / DecoderEncode and decode query strings and URL components.
- JWT DecoderDecode JSON Web Token headers, payloads, and timestamps.
- Regex TesterTest regular expressions with match groupings and flags.
- Diff CheckerCompare two text versions side by side.
- Code to Image ConverterConvert code snippets into beautiful, shareable screenshots with syntax highlighting and gradients.
- URL Slug GeneratorConvert article titles, product names, and strings into clean, SEO-friendly URL slugs.
- HTML MinifierCompress HTML markup by stripping comments, collapsing whitespace, and trimming attributes.
- CSS MinifierMinify and compress CSS stylesheets by removing whitespace, comments, and redundant units.
- JavaScript FormatterFormat, beautify, and indent minified or unformatted JavaScript and TypeScript code.
- JSON Tree ViewerInteractive visual tree explorer for JSON data with expandable nodes, type tags, and path search.
About Developer Tools on Swizztool
Suite of developer utilities: JSON tree viewer, code to image converter, HTML/CSS minifiers, JS formatter, Base64 encoder, regex tester, and diff checker. Client-side, zero data uploads. Open any tool and work in the browser. Files and text stay on this device.