Free OnlineTools

Format, minify and validate JSON

Encode and decode Base64 text

Encode and decode URL components

Convert text case in batch

Encode and decode HTML entities

Sort, deduplicate and reverse text lines

Remove duplicate lines from text

Compare two texts line by line

Test regular expressions with instant matches

Count characters, words, lines and paragraphs

Generate placeholder text quickly

Convert text into URL-friendly slugs

Compare differences between two texts

Generate MD5/SHA hashes

Decode JWT header and payload

Generate UUID v4 in batches

Generate secure random passwords

Lookup A/AAAA/CNAME/MX/NS/TXT records

Inspect certificate subject, issuer and expiry

Look up IP geolocation and ISP info

Run connectivity tests with ping

Format JSON, HTML, CSS and JavaScript

Convert Unix timestamps and datetime

Parse and build URL query strings

Convert length, weight and temperature units

Convert between binary, octal, decimal and hex

Parse cron expressions to human-readable text

Generate HTML meta tag code for SEO

Generate robots.txt content visually

Evaluate JSONPath expressions on JSON data

Convert between JSON and YAML formats

Convert between CSV and JSON formats

Calculate common percentage scenarios quickly

Convert CSV text into JSON array

Convert JSON array into CSV text

Generate random numbers within a range

Calculate BMI using height and weight

Compress images directly in browser

Convert HEX, RGB and HSL colors

Preview rendered Markdown in real time

Generate QR codes from text or links

Search and copy popular emojis

Generate placeholder images with Canvas

Generate color schemes from a base color

Look up Unicode character code info

Preview HTML rendering in real time

Generate CSS box-shadow visually

Calculate and lock aspect ratios

Resize images by custom width and height

Convert images to Base64 Data URL

Generate linear-gradient CSS visually