Developer Tools
JSON, Base64, hashing, minifiers and encoders.
47 tools in this category.
Password Generator
Generate strong, random, secure passwords with custom length and symbols.
Border Radius Generator
Design rounded corners visually — set each corner's radius, preview live, and copy the ready-to-use CSS
Box Shadow Generator
Design CSS box shadows visually — set offset, blur, spread and color, preview live, and copy the ready-to-use CSS
CSS Formatter
Format and beautify CSS with clean indentation — invalid CSS with unbalanced braces shows a clear error
CSS Gradient Generator
Build beautiful CSS gradients with a live preview — pick colors, angle and type, then copy the ready-to-use CSS
HEX to HSL
Convert a HEX color code to HSL (hue, saturation, lightness) values, with a live color preview
HEX to RGB
Convert a HEX color code to RGB values instantly, with a live color preview
HSL to RGB
Convert HSL (hue, saturation, lightness) values to RGB and HEX, with a live color preview
HTML Formatter
Format and beautify HTML with clean indentation — paste messy markup and get readable, structured code
JS Formatter
Format and beautify JavaScript with clean indentation — a simple, fast formatter for everyday code
JSON to XML
Convert JSON into XML in your browser — objects become elements, arrays become repeated elements, invalid JSON shows a clear error
Meta Tag Generator
Generate SEO meta title, description and Open Graph tags for your page.
Regex Tester
Test regular expressions live: see every match highlighted, with match count, groups and flags — invalid patterns show a clear error
RGB to HEX
Convert RGB color values to a HEX code instantly, with a live color preview
XML Formatter
Format and beautify XML with proper indentation — invalid XML shows a clear error instead of crashing
XML to JSON
Convert XML into JSON in your browser — repeated elements become arrays, attributes are kept under @attributes
ASCII to Text Converter
Convert ASCII codes (decimal or hex) back to readable text instantly in your browser. Free, no sign-up, works in your browser.
Binary Calculator
Add, subtract, multiply and divide binary numbers online, with decimal results shown alongside. Free, no sign-up, works in your browser.
Chmod Calculator
Calculate Linux file permissions: tick read, write and execute boxes to get the octal mode and symbolic string, or enter an octal value. Free, no sign-up, works in your browser.
Cron Expression Generator
Build a cron expression with plain dropdowns and presets, and read what it means in plain English. Free, no sign-up, works in your browser.
Hex Calculator
Add, subtract, multiply and divide hexadecimal numbers online, with decimal results shown alongside. Free, no sign-up, works in your browser.
HTML Decoder
Decode HTML entities back to normal characters — turn &amp; into & and &lt; into < instantly. Free, no sign-up, works in your browser.
HTML Encoder
Encode plain text into safe HTML entities — turn < into < and & into &amp; for display in web pages. Free, no sign-up, works in your browser.
IP Subnet Calculator
Calculate network address, broadcast address, usable hosts and IP range from an IPv4 address and CIDR prefix. Free, no sign-up, works in your browser.
JSON to YAML Converter
Convert JSON data to clean YAML format instantly in your browser, with proper indentation and quoting. Free, no sign-up, works in your browser.
JWT Decoder
Decode a JSON Web Token (JWT) to see its header and payload claims, including expiry. Runs locally; the signature is not verified here. Free, no sign-up, works in your browser.
Octal Calculator
Add, subtract, multiply and divide octal (base-8) numbers online, with decimal results shown alongside. Free, no sign-up, works in your browser.
SQL Formatter
Format messy SQL into clean, readable code: keywords uppercased, clauses on their own lines and indentation applied. Free, no sign-up, works in your browser.
Text to ASCII Converter
Convert any text into its ASCII codes in decimal or hexadecimal, for coding, debugging and learning. Free, no sign-up, works in your browser.
Unix Timestamp Converter
Convert a Unix timestamp to a readable date and time, or a date to a Unix timestamp, in UTC and your local time. Free, no sign-up, works in your browser.