SimpleUtilityBox

Quick Utilities

Processed locally in your browser. Inputs and files are not uploaded or saved by these tools.

Image Resizer

Resize an image with explicit dimensions or a locked aspect ratio.

Image Compressor

Adjust JPEG or WebP quality and compare file sizes.

Image Format Converter

Convert images to PNG, JPEG or WebP without changing dimensions.

QR Generator

Create a downloadable QR code from text or a URL.

Password Generator

Generate a random password with browser cryptography.

Passphrase Generator

Combine random words from the EFF English long wordlist.

Unit Converter

Convert length, mass, temperature, area, volume, speed and storage.

Percentage Calculator

Calculate a percentage, a share or a percentage change.

Word & Character Counter

Count words, Unicode characters, non-space characters and lines.

Text Case Converter

Convert text to lower, upper, title or sentence case.

HEX / RGB Converter

Convert a color between hexadecimal and RGB values.

JSON Formatter & Validator

Format, minify or validate JSON locally.

Base64 Encoder / Decoder

Encode UTF-8 text as Base64 or decode Base64 to text.

Unix Timestamp Converter

Convert Unix seconds to a date and dates to Unix seconds.

File Checksum / Hash

Calculate a local SHA-256, SHA-384 or SHA-512 file checksum.

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