All Tools

Free online Base64 encoder/decoder tool, no installation required

Free online URL encoder/decoder tool, no installation required

Free online HTML entity encoder/decoder tool

Free online XML special character escaper tool

Free online Unicode converter tool, escape sequences and text conversion

Free online JWT decoder tool, generate signed tokens with HMAC

Free online color converter tool, Hex/RGB/HSL conversion

Free online Morse code encoder/decoder tool

Free online random password generator, customizable length and charset

Free online password strength checker, estimate crack time

Free online MD5 hash generator tool, processed locally

Free online SHA-256/512 hash generator tool, processed locally

Free online RSA encryption/decryption tool, key pair generation

Free online HMAC signature generator tool, SHA-1/256/512 supported

Free online AES encryption/decryption tool, GCM/CBC mode supported

Free online Bcrypt hash generator tool, verification supported

Free online regex tester tool, real-time match preview

Free online case converter tool, multiple naming styles supported

Free online JSON formatter tool, minify and validate

Free online number format converter, thousands separator and scientific notation

Free online text deduplication tool, sort and remove empty lines

Free online character counter tool, count words, lines and bytes

Free online text comparison tool, highlight differences

Free online placeholder text generator tool

Free online JSON to CSV/YAML/XML converter tool

Free online SQL formatter tool, minify supported

Free online JavaScript formatter tool, beautify and minify

Free online XML formatter tool, beautify and minify

Free online HTTP status code lookup tool

Free online URL parser tool, breakdown URL components

Free online IP address lookup tool, show geolocation

Free online DNS lookup tool, A/MX/CNAME records supported

Free online HTTP response headers checker tool

Free online CORS policy checker tool

Free online domain Whois lookup tool, RDAP registration info

Free online User-Agent parser tool, detect browser and device

Free online robots.txt generator tool, visual editor

Free online TCP/UDP port number reference table

Free online subnet calculator tool, network range from IP/CIDR

Free online world clock tool, view multiple time zones

Free online timestamp converter tool, Unix timestamp and date conversion

Free online Cron expression parser, show next execution times

Free online CSS unit converter tool, px/rem/em/vw conversion

Free online color picker tool, HEX/RGB/HSL values display

Free online CSS gradient generator tool, real-time preview

Free online social media image size reference tool

Free online CSS box-shadow generator tool, real-time preview

Free online Flexbox layout editor tool, visual real-time preview

Free online CSS Grid layout generator tool, visual editor

Free online icon search tool, Iconify icon sets supported

Free online font previewer tool, Google Fonts supported

Free online HTML email template generator, responsive design

Free online ASCII character table, searchable reference

Free online Markdown editor tool, real-time preview

Free online CSV converter tool, JSON/SQL/Markdown supported

Free online YAML validator tool, syntax error checking

Free online TOML editor tool, syntax validation supported

Free online .env file editor tool, visual interface

Free online config file converter, JSON/YAML/TOML conversion

Free online MIME type reference tool, searchable table

Free online Markdown to HTML converter, real-time preview

Free online LaTeX formula editor, real-time preview

Free online barcode generator tool, multiple formats supported

Free online QR code generator tool, text, URL and WiFi supported

Free online favicon generator tool, multi-size icons from image

Free online placeholder image generator, custom size and color

Free online image compression tool, processed locally no upload

Free online Data URI generator tool, convert files to Base64

Free online reverse image search tool, Google and TinEye supported

Free online image format converter, PNG/JPEG/WebP supported

Free online SVG optimizer tool, clean and compress code

Free online ICO icon generator tool, multi-size from image

Free online PDF merge and split tool, processed locally no upload

Free online vCard QR code generator, contact info encoding

Free online UUID/GUID generator tool (v4)

Free online base converter tool, binary to hexadecimal supported

Free online keycode checker tool, real-time detection

Free online .gitignore generator tool, select by tech stack

Free online random decision tool, coin flip, dice and random pick

Free online developer salary comparison tool

Free online UTF-8 encoder/decoder tool, Unicode codepoint conversion

Free online HTML and UBB/BBCode converter tool

Free online Git command cheat sheet reference

Free online cURL command generator tool, visual configuration

Free online API testing tool, lightweight interface debugging

Free online WebSocket tester tool, real-time send and receive

Free online Nginx config file generator tool

Free online Docker Compose generator, preset common services

Free online npm package size comparison tool

Free online keyboard shortcut reference, VS Code/Chrome/Terminal

Free online ULID generator tool, sortable unique identifiers

Free online Open Graph tag generator, social sharing optimization

Free online Twitter Card meta tag generator tool

Free online Schema.org structured data generator tool

Free online XML Sitemap generator tool

Free online code snippet manager, browser local storage

Free online performance budget tracker, monitor resource sizes

Free online SEO audit checklist, interactive progress tracking

Free online tech stack recommender tool, by project type

Free online JS pack/unpack tool, eval encoding and restore

Free online JSON to type definition tool, TypeScript/Go/C#/Java

Free online CSS formatter tool, beautify and minify

Free online HTML formatter tool, beautify and minify

Free online text find and replace tool, regex supported

Free online XML and JSON converter tool

Free online chart maker tool, bar/line/pie charts supported

Free online DES/3DES/RC4 encryption tool, processed locally

Free online CSS sprite generator tool

Free online QR code decoder tool, read from image

Free online image color picker tool, click to get color values

Free online image watermark tool, add custom text

Free online EXIF data viewer, camera and GPS info display

Free online Identicon avatar generator, string to unique icon

Free online image to PDF converter, multiple images merge

Free online PDF watermark tool, add text watermark

Free online JavaScript playground, run code in browser

Free online XPath tester tool, query XML documents

Free online batch rename tool, preview renaming results

Free online data storage unit converter, bit/KB/MB/GB conversion

Free online HTML table generator tool, visual creation

Free online JS encoder tool, CharCode/Base64/JJencode supported

Search and compare CPU performance scores from a comprehensive benchmark database.

Convert IPv4 addresses to IPv6 mapped, 6to4, and compatible formats.

Convert IPv4 addresses to decimal, hexadecimal, octal, and binary numbers and vice versa.

Generate harmonious color schemes: complementary, analogous, triadic, split-complementary, and tetradic.

Find the manufacturer/vendor by MAC address OUI prefix using IEEE OUI database.

Convert between Decimal Degrees (DD) and Degrees Minutes Seconds (DMS) formats for GIS and mapping.

Convert between WGS-84, GCJ-02, and BD-09 coordinate systems used in China mapping platforms.

Generate custom sequences in bulk

Interactive periodic table of elements with detailed information

Extract text from images using OCR

Online drawing board for quick sketches

Scientific calculator with formula input and programmer mode

Online mind map editor for brainstorming and organizing ideas

Create Ishikawa (fishbone) diagrams for root cause analysis

Simple and effective todo list with priorities and filtering