Toolbox — free browser tools

Every tool below has its own page and runs entirely in your browser. No signup required.

Percentage Calculator — Find X% of any number, instantly.
Random Number Generator — Pick a number between any range.
Text Counter — Live word and character counts.
Case Converter — camelCase, snake_case, Title Case…
Diff Checker — Side-by-side text comparison.
Markdown Preview — Live Markdown → HTML with copy.
Lorem Ipsum — Generate placeholder paragraphs.
JSON Formatter — Pretty-print and validate JSON.
Regex Tester — Live matches, groups, and flags.
JWT Decoder — Inspect header, payload, and expiry.
Hash Generator — SHA-1, SHA-256, SHA-384, SHA-512.
Password Generator — Strong, secure, customizable passwords.
QR Code Generator — Turn any text or URL into a QR code.
UUID Generator — Bulk UUID v4 and v7.
Unit Converter — Convert cm ↔ m and kg ↔ g.
Color Converter — HEX, RGB, and HSL — synced live.
Base64 Encoder / Decoder — Encode and decode Base64 strings.
URL Encoder / Decoder — Percent-encode and decode URLs.
YAML ↔ JSON — Convert between YAML and JSON.
Timestamp Converter — Unix timestamp ↔ human date.
Cron Explainer — Plain-English schedule and next runs.
SVG Optimizer — Strip cruft, shrink SVG markup.
Image Converter — Resize and convert PNG/JPG/WebP.
CSV ↔ JSON — Convert spreadsheets to JSON and back.
HTML Entities — Encode and decode HTML entities.
Unicode Inspector — Break a string into code points.
Gradient Generator — Build CSS linear gradients visually.
Favicon Generator — Letter-mark favicons in every size.
Mock Data Generator — Sample users as JSON or CSV.
EXIF Stripper — Remove metadata from photos.
Palette Extractor — Pull dominant colors from any image.
BMI Calculator — Body Mass Index, metric or imperial.
Color Contrast Checker — WCAG AA / AAA contrast ratios.
Box Shadow Generator — Live CSS box-shadow builder.
CSS clamp() Calculator — Fluid typography between viewports.
Timezone Meeting Planner — See a time across multiple cities at a glance.
Number Base Converter — Binary, octal, decimal & hex side by side.
CSS text-shadow Generator — Craft text shadows with a live preview.

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