Design
Image aspect ratio fitter
Fit an image into a new aspect ratio without cropping, using colored padding. Download a PNG.
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Tools
Conversion · tools
Runs in your browser · Free
6tools
20 language
20 language
Conversion
6 toolsText
Base64 text converter
Encode Unicode text to Base64 or decode Base64 back into text, entirely locally.
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Calculators
Byte unit converter
Convert between bits, bytes and decimal or binary file-size units.
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Time
Unix timestamp converter
Convert Unix seconds or milliseconds to a UTC date, or a date string to a timestamp.
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Design
HEX to RGBA mixer
Convert a HEX color and opacity percentage to CSS RGBA and preview the color.
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Text
HTML entity encoder
Convert special HTML characters to entities. The output is displayed as plain text.
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