loot.tools

Free online tools, no login needed

Count words, resize images, work out percentages, convert timestamps, and reformat JSON. Everything runs in your browser, so nothing you paste or upload ever leaves the tab.

  • 137 tools
  • 100% free
  • 100% client-side
  • No personal tracking
  • No sign-up
AllTextImagesPDFMathTimeSecurityCodeColorCSSWebTech

Math

Quick math for tips, percentages, and ratios.

Unit Converter
Convert length, mass, temperature, data, speed, time, area, and volume.
Math Expression Evaluator
Type a math expression and get the answer, with functions, powers, and constants.
Percentage Calculator
Calculate X% of Y, what percent one number is of another, percent change, and a value adjusted up or down by a percent.
Tip Calculator
Work out the tip and split a bill between any number of people.
Aspect Ratio Calculator
Lock a ratio like 16:9 and solve for the missing width or height.
Loan Calculator
Work out the monthly payment, total interest, and payoff for any loan.
Compound Interest Calculator
See how savings grow with compound interest and regular contributions.
BMI Calculator
Work out your body mass index and see the healthy weight range for your height.
Roman Numeral Converter
Convert numbers to Roman numerals and decode Roman numerals back to numbers.

Code

Format, minify, convert, and reshape code, config, and data.

Code Formatter
Format JSON, JavaScript, TypeScript, HTML, CSS, XML, YAML, SQL, or Markdown.
JSON Formatter & Validator
Format, minify, and validate JSON, with the exact line and column of any error.
JSON Diff
Compare two JSON documents and see exactly what was added, removed, or changed.
JSONPath Evaluator
Run a JSONPath query against any JSON and see every matching value and its path.
Minifier & Beautifier
Minify or beautify JavaScript and CSS, with live size savings.
HTML Formatter
Format and indent messy HTML for readability.
SQL Formatter
Format SQL queries with clean indentation and keyword casing.
XML Formatter
Format and validate XML with consistent indentation.
YAML Formatter
Format and validate YAML with configurable indentation.

Color

Pick colors, convert formats, and build palettes, scales, and contrast checks.

Color Picker
Pick a color and copy its HEX, RGB, or HSL value.
Image Color Extractor
Pull the main colors out of an image as a copyable palette.
Color Converter
Convert a color between HEX, RGB, HSL, HSV, and CMYK in one place.
Color Name Finder
Find the nearest CSS named color for any HEX, RGB, or HSL value.
Color Generator
Generate color palettes from a base color.
Color Palette Generator
Generate harmonious color palettes from any base color.
Color Shades & Tints Generator
Generate tints and shades of any color for a full light-to-dark scale.
Color Blender
Mix two colors and get the in-between blend, midpoint, and gradient steps.
Color Contrast
Check WCAG contrast ratios for accessible design.
Color Blindness Simulator
Preview how a color palette looks to people with color vision deficiencies.

CSS

Generate CSS gradients, shadows, shapes, and layout by hand.

CSS Gradient Generator
Build linear or radial CSS gradients with a visual editor.
Box Shadow Generator
Generate CSS box-shadow with sliders for offset, blur, spread, and color.
Text Shadow Generator
Build a CSS text-shadow with sliders for offset, blur, and color, over live sample text.
CSS Filter Generator
Stack blur, brightness, contrast, grayscale, and more into a CSS filter with a live preview.
Border Radius Generator
Set border-radius for each corner with sliders and live preview.
Glassmorphism Generator
Create frosted glass CSS effects with live preview and sliders.
PX to REM Converter
Convert px to rem, em, pt, and % for CSS, with a live table.
CSS Clamp Generator
Build a fluid clamp() value that scales between two screen sizes.
Cubic Bezier Generator
Build and preview a CSS cubic-bezier() easing curve for animations.

Web

Build, encode, and inspect URLs, meta tags, and HTTP responses.

URL Builder & Parser
Build URLs from parts, or paste one to break it apart.
User-Agent Parser
Paste a User-Agent string to read off the browser, OS, and device.
URL Encoder/Decoder
Encode and decode URL components or whole URLs.
QR Code Generator
Turn a URL or any text into a downloadable QR code.
Barcode Generator
Make a scannable 1D barcode and download it as an SVG.
Slug Generator
Turn a title or heading into a clean, URL-safe slug.
Meta Tag Generator
Generate Open Graph and Twitter meta tags with a live social preview.
HTTP Status Codes
Searchable reference for every HTTP status code and what it means.
MIME Type Lookup
Find the MIME type for any file extension, or the extensions for a type.
IP Subnet Calculator
Work out network, broadcast, host range, and mask for a CIDR.
IP Address Converter
Convert an IPv4 address to integer, hex, binary, and IPv6.

Tech

Check your hardware, input devices, and display.

Keyboard Checker
Test your keyboard by seeing pressed keys light up.
Key Code Finder
Press any key to see its JavaScript event.key, event.code, and keyCode.
Mouse Checker
See mouse position, button state, and recent click/wheel events.
Gamepad Tester
Test a game controller's buttons and sticks in your browser.
Webcam Tester
Test your webcam with a live preview, no download needed.
Microphone Tester
Test your mic with a live input-level meter, no download.
Speaker Test
Play a test tone through the left, right, or both speakers to check your audio.
Screen Resolution
Check your screen resolution, viewport size, and pixel ratio.
Refresh Rate Test
Measure how many frames per second your display actually refreshes at.
Dead Pixel Test
Fill your screen with solid colors to find dead or stuck pixels.