14 free tools
Developer Tools
Pinned Tools
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JSON Formatter & Validator
Format, validate and minify JSON.
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Base64 Encoder / Decoder
Encode and decode Base64 strings.
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URL Encoder / Decoder
Encode and decode URLs and query strings.
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Color Converter
Convert HEX, RGB, and HSL colors.
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HTML Formatter
Beautify or minify HTML code.
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CSS Minifier
Minify or beautify CSS code.
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Regex Tester
Test regex patterns with live highlighting.
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Hash Generator
Generate SHA-1, SHA-256, SHA-512 hashes.
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Timestamp Converter
Convert Unix timestamps to dates.
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HTML to PNG
Convert HTML code to PNG image.
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HTML to JPG
Convert HTML code to JPG image.
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Markdown to HTML
Convert Markdown to HTML code.
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QR Code Generator
Generate QR codes for any content.
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URL to PDF
Convert webpage URL to PDF.
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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.