14 free tools
Developer Tools
Free developer tools — JSON formatter, Base64 encoder, URL encoder, and color converter. Built for speed and privacy.
JSON Formatter & Validator
Format, validate and minify JSON.
Base64 Encoder / Decoder
Encode and decode Base64 strings.
URL Encoder / Decoder
Encode and decode URLs and query strings.
Color Converter
Convert HEX, RGB, and HSL colors.
HTML Formatter
Beautify or minify HTML code.
CSS Minifier
Minify or beautify CSS code.
Regex Tester
Test regex patterns with live highlighting.
Hash Generator
Generate SHA-1, SHA-256, SHA-512 hashes.
Timestamp Converter
Convert Unix timestamps to dates.
HTML to PNG
Convert HTML code to PNG image.
HTML to JPG
Convert HTML code to JPG image.
Markdown to HTML
Convert Markdown to HTML code.
QR Code Generator
Generate QR codes for any content.
URL to PDF
Convert webpage URL to PDF.
Free Developer Tools — No Account Required
ToolBubble provides 14 free developer tools that run entirely in your browser. No installation, no account required, and your files never leave your device.