Free browser tools

Available tools

• Aspect Ratio Calculator

  Keep width and height proportions consistent while resizing assets.

• Bleed & Safe Margin Calculator

  Calculate bleed, trim, and safe margins for print-ready layouts.

• Base64 Encode/Decode

  Encode or decode Base64 instantly for API and payload debugging workflows.

• Byte & Character Counter

  Count characters, words, lines, and UTF-8 bytes instantly in your browser without uploads.

• Percent & Ratio Calculator

  Run quick percent and ratio calculations with clear worked examples.

• Case Converter

  Convert text between common casing styles quickly and safely.

• cm/mm/in ↔ px (DPI)

  Convert physical dimensions to pixels using customizable DPI settings.

• Color Picker

  Convert and copy HEX, RGB, and HSL values in one place.

• Color Contrast Checker

  Check text and background contrast ratio with simple WCAG pass hints.

• Text Diff Checker

  Compare two texts line by line and review added or removed content clearly.

• CSS Gradient Generator

  Build linear gradients quickly and copy production-ready CSS output.

• Grid & Gutter Calculator

  Compute columns, gutters, and margins for responsive layout systems.

• Favicon Generator

  Generate basic favicon PNG outputs from an uploaded source image.

• Hash Generator (SHA-256)

  Generate SHA-256 hashes client-side for quick integrity checks.

• Image Compressor

  Compress images in-browser with quality controls and size comparison.

• Image Metadata Viewer/Remover

  View basic image metadata and export a metadata-stripped copy locally.

• JWT Decoder

  Decode JWT header and payload locally in your browser with no verification.

• JSON Formatter & Validator

  Format, validate, and minify JSON with helpful parse errors.

• Image Resizer

  Resize images with presets and optional ratio lock, then export quickly.

• Dummy Text Generator

  Generate placeholder text in Latin and optional Korean blocks.

• Paper Size Reference

  Quick reference for common paper sizes in mm and inch dimensions.

• Password Generator

  Generate strong passwords with length and character set toggles.

• SVG Optimizer

  Optimize SVG markup by stripping metadata and reducing unnecessary bytes.

• Timestamp Converter

  Convert Unix timestamps to dates and back with UTC and KST views.

• QR Code Generator

  Generate QR codes for URL, text, and Wi-Fi details and download PNG.

• px↔mm↔pt Converter (DPI)

  Convert px, mm, and pt with DPI presets and custom print density.

• URL Encode/Decode

  Encode or decode URLs safely for query strings and path values.

• UUID Generator

  Generate UUID v4 values quickly for IDs, tests, and fixtures.

• WebP Converter

  Convert JPG or PNG images to WebP client-side with quality control.

• Regex Tester

  Test regex patterns with match highlighting and capture group previews.

• Word & Character Counter

  Count words, characters, lines, paragraphs, and estimated reading time instantly.