Browser tools. No login, no servers.

Ctrl+K

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.

53 tools
100% free
100% client-side
No tracking
No sign-up

All Text Images Math Time Data Security Code Design Web Tech

Text

Count, clean, sort, and reshape text and Markdown.

Count words, characters, sentences, and paragraphs in your text.

Character Counter

Count characters and check against X, Instagram, and other platform limits.

Convert text between UPPER, lower, Title, camelCase, snake_case, and more.

Find and Replace

Find and replace text with plain text or regex patterns.

Sort lines alphabetically, by length, or in reverse order.

Duplicate Line Remover

Remove duplicate lines from text, keeping the first occurrence.

Reading Time Estimator

Paste text to estimate reading and speaking time at different speeds.

Markdown Editor

Edit Markdown and see a live-rendered preview.

Images

Compress, resize, and encode images right in your browser.

Image Compressor

Compress JPEG, PNG, and WebP images in your browser without uploading.

Resize images to exact pixel dimensions in your browser, no upload.

Image to Base64

Convert an image to a Base64 data URI for inline HTML and CSS.

Favicon Generator

Create favicons from text or an uploaded image in multiple sizes.

Math

Quick math for tips, percentages, and ratios.

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.

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.

Time

Convert timestamps and time zones, and work out ages.

Timestamp Converter

Convert Unix timestamps to human-readable dates.

Timezone Converter

Convert times between common time zones.

Calculate exact age in years, months, and days from a date of birth.

Data

Move data between JSON, CSV, YAML, Base64, and URLs.

Convert between CSV, TSV, JSON, YAML, and XML with two-way sync.

Convert a JSON array of objects to CSV format.

Convert CSV data to a JSON array of objects.

Convert between JSON and YAML formats instantly.

Base64 Encoder/Decoder

Encode and decode Base64.

URL Encoder/Decoder

Encode and decode URL components or whole URLs.

Security

Hashes, tokens, passwords, and one-time codes.

Password Generator

Generate strong passwords with a live strength meter.

Create SHA hashes from any text input.

Generate one or many v4 UUIDs instantly in the browser.

JWT Encoder/Decoder

Decode and build JWTs, with an expiry check.

BCrypt Generator & Verifier

Hash a password with bcrypt or check a password against an existing bcrypt hash.

TOTP / 2FA Code Generator

Generate time-based one-time codes from a 2FA secret, the same numbers an authenticator app shows.

Code

Format, minify, and reshape code and config files.

Format JSON, JavaScript, TypeScript, HTML, CSS, XML, YAML, SQL, or Markdown.

JS Minifier / Beautifier

Minify JavaScript to reduce file size, or beautify it for readability.

Format and indent messy HTML for readability.

Format SQL queries with clean indentation and keyword casing.

Format and validate XML with consistent indentation.

Format and validate YAML with configurable indentation.

JSON to TypeScript

Generate TypeScript interfaces from JSON data.

JSON String Escape

Escape text into a JSON string or unescape a JSON string back to text.

Regex Playground

Test regex patterns and run search-and-replace instantly.

Design

Pick colors and build CSS backgrounds, shadows, and shapes.

Pick a color and copy its 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.

Check WCAG contrast ratios for accessible design.

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.

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.

Web

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

Build and deconstruct URLs with quick previews.

Paste a URL to split it into scheme, host, path, and query parameters.

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.

Tech

Check that your keyboard and mouse register every input.

Keyboard Checker

Test your keyboard by seeing pressed keys light up.

See mouse position, button state, and recent click/wheel events.