Random Tools

Calculate the closest sane aspect ratio for a given width and height.

Convert time to decimal. Useful for converting hours worked to invoiceable time.

Convert pixel (px) values to rem units based on the browser's default font size.

Convert font sizes between px, rem, em, %, pt, picas, inches and the Adobe XD unit, with adjustable base size and PPI. Shows how Adobe XD's unit-less sizing maps to CSS px and rem.

Generate a modular typographic scale (golden ratio, perfect fourth and more) with px, rem and fluid clamp() output.

Build UTM tagged URLs for Google Analytics, one at a time or in bulk by generating a campaign across every source and medium at once. Cleans values to lowercase for consistent reports, with CSV export.

Generate QR codes with UTM campaign tags, custom colours, dot styles and error correction. Download as PNG, SVG, JPEG or WebP, or turn an image into an artistic QR code that still scans.

Make a 1200x630 Open Graph / social share image in your browser. Type a title, pick colours and any Google Font, and download the PNG. No upload, no sign-up.

Generate a robots.txt that controls AI crawlers. Block training bots like GPTBot and ClaudeBot while still allowing AI search and user fetches, grouped by purpose with one-click presets.

Preview your title and meta description in Google, truncated by real pixel width (not character count) in Google's own fonts, for desktop and mobile. Includes a panel on how AI search uses these tags.

Find out your public IP address instantly. No hassle, just your IP.

See the hidden EXIF metadata in a photo, including GPS location, camera and timestamp, then download a clean copy with it all removed. Runs entirely in your browser; your photo is never uploaded.

Compress a JPEG, PNG or WebP to a target file size. Name the size you need, like under 200 KB, and it finds the highest quality that fits, resizing only if it must. Runs in your browser; nothing is uploaded.

Encode or decode text to/from Base64. Updates in real-time.

Simple Lorem Ipsum generator. Generate as much text as you need.

Generate white, pink, or brown noise to help you focus or relax.

Convert cups, tablespoons and teaspoons to grams and back using the real density of each ingredient, so a cup of flour and a cup of honey give different weights. Pick your cup standard too.

Calculate the ingredients needed to make pizza dough based on various criteria.

Calculate your perfect pinsa dough recipe with custom hydration, yeast type, and fermentation settings.

Calculate the ingredients needed to make naan breads.

Turn any dough recipe into baker's percentages, then rescale it from whatever you have: a set amount of flour, a total dough weight, or a number of pieces at a given weight.

Convert Unix timestamps to human-readable dates and vice versa.

Convert SMPTE timecode to frames and real time and back, at any frame rate. Handles drop-frame and non-drop-frame correctly for 29.97 and 59.94 fps, which most converters get wrong.

Validate and format JSON data. Updates in real-time.

Quickly capitalize titles according to general rules of most accepted standards.

Turn a title into a clean URL slug: folds accents, optionally drops stop words and expands German umlauts, caps length at a whole word, and works in bulk. Hyphens by default.

Translate text to Morse code and vice versa.

Convert colors between HEX, RGB, HSL, HWB, LAB, LCH, OKLAB, OKLCH and wide-gamut Display P3 / Rec. 2020.

Check text contrast against WCAG 2 and APCA at once, then get the nearest accessible color. When a pair fails it nudges lightness in OKLCH to keep your hue and fix only what's needed.

Pull the dominant colors out of an image or a block of CSS, each given in HEX and OKLCH with the accessible text and background pairings flagged. Includes a bookmarklet for live pages.

Generate random number lines for UK Lotto, EuroMillions, Thunderball and Set For Life. Optional 'avoid common combinations' mode picks less-shared numbers to cut the chance of splitting a jackpot - same odds of winning, better odds of not sharing.

Find crossword and arrowword answers by pattern. Enter the letters you know and ? for each blank square to list every matching word. Runs entirely in your browser using a 172,000-word British and American dictionary.

Plan multiple dishes so they all finish at once. Enter how long each one takes and either start now or set a target time, and the timer tells you when to start each dish. Keeps the screen awake and beeps when it's time.