Free Utility Tools
QR codes, passwords, JSON, colors and everyday dev helpers.
51 tools available
QR Code Generator
Create a downloadable QR code for any link, text or Wi-Fi network. Free online qr code generator that runs in your browser — no upload, no watermark, no sign…
WiFi QR Code Generator
Make a scannable QR code that joins guests to your Wi-Fi. Free online wifi qr code generator that runs in your browser — no upload, no watermark, no sign-up.
Password Generator
Create strong random passwords with the character sets you choose. Free online password generator that runs in your browser — no upload, no watermark, no sig…
Passphrase Generator
Generate memorable multi-word passphrases that are still strong. Free online passphrase generator that runs in your browser — no upload, no watermark, no sig…
UUID Generator
Generate cryptographically random UUID v4 identifiers. Free online uuid generator that runs in your browser — no upload, no watermark, no sign-up.
Random String Generator
Produce random strings, tokens or API keys of any length. Free online random string generator that runs in your browser — no upload, no watermark, no sign-up.
Random Picker
Roll dice, flip coins or pick a random winner instantly. Free online random picker that runs in your browser — no upload, no watermark, no sign-up.
Barcode Data Generator
Generate valid EAN-13 and UPC-A barcode numbers with check digits. Free online barcode data generator that runs in your browser — no upload, no watermark, no…
Meta Tag Generator
Build SEO, Open Graph and Twitter meta tags for any page. Free online meta tag generator that runs in your browser — no upload, no watermark, no sign-up.
Robots.txt Generator
Create a valid robots.txt file for your website in seconds. Free online robots.txt generator that runs in your browser — no upload, no watermark, no sign-up.
JSON Formatter
Pretty-print, validate and tidy messy JSON. Free online json formatter that runs in your browser — no upload, no watermark, no sign-up.
JSON Minifier
Strip whitespace from JSON to make payloads smaller. Free online json minifier that runs in your browser — no upload, no watermark, no sign-up.
JSON Validator
Check JSON for syntax errors and see a structure summary. Free online json validator that runs in your browser — no upload, no watermark, no sign-up.
JSON to YAML Converter
Convert JSON configuration into readable YAML. Free online json to yaml converter that runs in your browser — no upload, no watermark, no sign-up.
YAML to JSON Converter
Turn YAML files into formatted JSON. Free online yaml to json converter that runs in your browser — no upload, no watermark, no sign-up.
XML Formatter
Indent and validate XML so it is easy to read. Free online xml formatter that runs in your browser — no upload, no watermark, no sign-up.
HTML Formatter
Beautify minified HTML with clean indentation. Free online html formatter that runs in your browser — no upload, no watermark, no sign-up.
CSS Minifier
Shrink stylesheets by removing comments and whitespace. Free online css minifier that runs in your browser — no upload, no watermark, no sign-up.
JavaScript Minifier
Remove comments and extra whitespace from JavaScript. Free online javascript minifier that runs in your browser — no upload, no watermark, no sign-up.
HTML Minifier
Compress HTML by stripping comments and redundant spaces. Free online html minifier that runs in your browser — no upload, no watermark, no sign-up.
Hash Generator
Create MD5, SHA-1, SHA-256 and SHA-512 hashes of any text. Free online hash generator that runs in your browser — no upload, no watermark, no sign-up.
MD5 Hash Generator
Generate an MD5 checksum for any string offline. Free online md5 hash generator that runs in your browser — no upload, no watermark, no sign-up.
SHA-256 Hash Generator
Produce a SHA-256 hash using your browser's crypto engine. Free online sha-256 hash generator that runs in your browser — no upload, no watermark, no sign-up.
JWT Decoder
Decode a JSON Web Token's header and payload without sending it anywhere. Free online jwt decoder that runs in your browser — no upload, no watermark, no sig…
Regex Tester
Test a regular expression against your text and see every match. Free online regex tester that runs in your browser — no upload, no watermark, no sign-up.
URL Parser
Break a URL into protocol, host, path and query parameters. Free online url parser that runs in your browser — no upload, no watermark, no sign-up.
UTM Link Builder
Build trackable campaign URLs with UTM parameters. Free online utm link builder that runs in your browser — no upload, no watermark, no sign-up.
Number Base Converter
Convert numbers between binary, octal, decimal and hexadecimal. Free online number base converter that runs in your browser — no upload, no watermark, no sig…
Unix Timestamp Converter
Convert Unix timestamps to readable dates and back. Free online unix timestamp converter that runs in your browser — no upload, no watermark, no sign-up.
Cron Expression Explainer
Translate a cron schedule into plain English. Free online cron expression explainer that runs in your browser — no upload, no watermark, no sign-up.
Diff Checker
Spot the differences between two versions of a file or text. Free online diff checker that runs in your browser — no upload, no watermark, no sign-up.
Color Converter
Convert a colour between HEX, RGB, HSL and CMYK. Free online color converter that runs in your browser — no upload, no watermark, no sign-up.
HEX to RGB Converter
Turn a hex colour code into RGB and RGBA values. Free online hex to rgb converter that runs in your browser — no upload, no watermark, no sign-up.
RGB to HEX Converter
Convert RGB values into a hex colour code. Free online rgb to hex converter that runs in your browser — no upload, no watermark, no sign-up.
Color Shade Generator
Build a tint and shade scale from a single brand colour. Free online color shade generator that runs in your browser — no upload, no watermark, no sign-up.
Color Palette Generator
Create complementary, analogous and triadic palettes from one colour. Free online color palette generator that runs in your browser — no upload, no watermark…
Color Contrast Checker
Check text and background contrast against WCAG accessibility levels. Free online color contrast checker that runs in your browser — no upload, no watermark,…
CSS Gradient Generator
Generate ready-to-paste CSS gradient code from two or three colours. Free online css gradient generator that runs in your browser — no upload, no watermark,…
CSS Box Shadow Generator
Dial in a CSS box-shadow and copy the code. Free online css box shadow generator that runs in your browser — no upload, no watermark, no sign-up.
CSS Border Radius Generator
Create custom corner radius CSS, including squircle shapes. Free online css border radius generator that runs in your browser — no upload, no watermark, no s…
Email Validator
Check a list of email addresses for formatting problems. Free online email validator that runs in your browser — no upload, no watermark, no sign-up.
Credit Card Number Validator
Check a card number with the Luhn algorithm and detect the brand. Free online credit card number validator that runs in your browser — no upload, no watermar…
IP Address Checker
Validate IPv4 and IPv6 addresses and see their class and range. Free online ip address checker that runs in your browser — no upload, no watermark, no sign-u…
Text Occurrence Counter
Count how many times a word or phrase appears in your text. Free online text occurrence counter that runs in your browser — no upload, no watermark, no sign-…
Screen Resolution Checker
See your screen size, viewport, pixel ratio and colour depth. Free online screen resolution checker that runs in your browser — no upload, no watermark, no s…
Browser Info Checker
See what your browser reveals: platform, language and capabilities. Free online browser info checker that runs in your browser — no upload, no watermark, no…
Time Zone Converter
Convert a date and time between any two world time zones. Free online time zone converter that runs in your browser — no upload, no watermark, no sign-up.
Interval Timer Planner
Plan a workout or study session as a timed interval schedule. Free online interval timer planner that runs in your browser — no upload, no watermark, no sign…
Markdown to HTML Converter
Convert Markdown into clean HTML you can paste anywhere. Free online markdown to html converter that runs in your browser — no upload, no watermark, no sign-…
HTML to Markdown Converter
Turn HTML back into tidy Markdown for docs and READMEs. Free online html to markdown converter that runs in your browser — no upload, no watermark, no sign-u…
CSV Table Viewer
Preview CSV data as an aligned table and check the column counts. Free online csv table viewer that runs in your browser — no upload, no watermark, no sign-u…