All tools
30 free utilities in five categories. Filter by name or by category.
Showing 30 tools.
Generators6
QR code generatorCreate and download QR codes as PNG or SVG. Secure password generatorStrong random passwords generated on your device. Random number generatorRandom numbers within a range, with or without repeats. Username generatorOriginal username ideas for social networks and games. Lorem ipsum generatorPlaceholder text by paragraphs, sentences or words. URL slug generatorTurn titles into clean URLs without accents or symbols.
Calculators6
Percentage calculatorCalculate percentages, discounts and changes. VAT and discount calculatorAdd or remove VAT and apply discounts with an editable rate. Rule of three calculatorDirect and inverse rule of three, step by step. Hours worked calculatorAdd up shifts with breaks, even across midnight. Net salary estimatorExplained gross-to-net estimate with visible assumptions. Compound interest calculatorProjection with contributions, formula and yearly table.
Image and text6
Image compressorReduce image file size right in your browser. Image resizerChange pixel dimensions while keeping the aspect ratio. PNG, JPG and WebP converterChange image formats without uploading them. Word counterCount words and characters and estimate reading time. Uppercase and lowercase converterUppercase, lowercase, title case, camelCase and more. Remove extra spacesClean up double spaces, tabs and blank lines.
Developer6
JSON formatterValidate and pretty-print or minify JSON data. JSON validatorCheck whether JSON is valid with clear error messages. Base64 encoder and decoderConvert UTF-8 text and files to and from Base64. URL encoder and decoderPercent-encode URL components or full URLs. Unix timestamp converterConvert timestamps in seconds or milliseconds to dates. Unit converterConvert length, weight, temperature and more.
Dates and color6
Date difference calculatorDays, weeks and months between two dates, with weekdays. Add or subtract days from a dateFind a future or past date by days, weeks or months. World clockCurrent time in several time zones and a converter. HEX and RGB color pickerPick a color and convert between HEX, RGB and HSL. Color palette generatorHarmonious palettes with accessible contrast checks. Digital storage converterConvert bytes, KB, MB, GB and their binary equivalents.