Free Online Tools

Generators and checkers for the technical side of search optimisation. Everything runs in your browser, so your pages and content are never uploaded.

• Meta Tag GeneratorFill in your page details and copy ready-to-use meta tags.
• Open Graph and Twitter Card GeneratorControl how your page looks when it is shared on social networks.
• Organization Schema GeneratorDescribe your company to search engines with JSON-LD.
• Local Business Schema GeneratorMark up your shop, restaurant or office so search engines can show accurate local details.
• Article Schema GeneratorAdd article structured data to blog posts and news stories.
• Product Schema GeneratorHelp search engines show price and availability for your products.

Convert, resize, compress and inspect images without installing software. Files are processed locally in your browser and never leave your device.

• Image ResizerChange the width and height of one or many images without installing software.
• Image CompressorMake images smaller for faster websites and easier sharing.
• Image Metadata RemoverDelete location and camera details from photos before you post them.
• Image Metadata ViewerSee what information a photo carries before you share it.
• Image to Base64 ConverterTurn an image into text you can embed directly in code.
• Base64 to Image ConverterDecode Base64 text back into an image file.

Convert and extract audio directly in your browser. Decoding uses your browser's built-in codecs, so nothing is uploaded to a server.

• Extract Audio from VideoPull the sound out of a video and save it as an audio file.
• Audio ConverterConvert audio files between common formats without uploading them.
• WAV to MP3 ConverterConvert WAV files to MP3 in your browser, with a choice of bitrate.
• FLAC to MP3 ConverterConvert FLAC files to MP3 in your browser, with a choice of bitrate.
• OGG to MP3 ConverterConvert OGG files to MP3 in your browser, with a choice of bitrate.
• AAC to MP3 ConverterConvert AAC files to MP3 in your browser, with a choice of bitrate.

Pick, convert and combine colors, check accessibility contrast and build palettes for your designs.

• Color PickerChoose a color and copy its code in every common format.
• Color ConverterPaste a color in any format and see it in all the others.
• HEX to RGB ConverterTurn a HEX color code into red, green and blue values.
• RGB to HEX ConverterTurn red, green and blue values into a HEX color code.
• Color Contrast CheckerTest whether your text and background colors are readable for everyone.
• Color Palette GeneratorBuild a harmonious palette starting from a single color.

Adjust the controls, watch the live preview and copy clean CSS. No frameworks and no code to write by hand.

• CSS Box Shadow GeneratorAdjust the sliders and copy the box-shadow CSS.
• Glassmorphism CSS GeneratorBuild a frosted glass card and copy the CSS.
• CSS Gradient GeneratorDesign a gradient visually and copy the CSS background.
• CSS Button GeneratorCreate a styled button and copy its CSS, including the hover state.
• Custom Scrollbar GeneratorDesign a scrollbar that matches your site and copy the CSS.
• SVG Blob GeneratorGenerate organic blob shapes and copy the SVG.

Quick utilities for cleaning, converting and analysing English text. Paste your text and get results instantly.

• Word CounterPaste or type your text to count words, characters, sentences and paragraphs, with reading time.
• Character CounterCount characters and check your text against common platform and SEO limits.
• Case ConverterChange the capitalisation of any text, or convert it to a programming naming style.
• Uppercase ConverterTurn all letters in your text into capitals with one paste.
• Lowercase ConverterTurn all letters in your text into small letters with one paste.
• Title Case ConverterCapitalise headlines and titles the way most English style guides expect.

Math calculators and unit converters that show the working, not just the answer.

• Online CalculatorType a full expression such as (2+3)*4^2/8 and see the result as you type.
• Percentage CalculatorWork out percentages of numbers, find what percent one value is of another, or measure change.
• Percentage Change CalculatorEnter an old and a new value to see how much it changed in percent.
• Square Root CalculatorCalculate square roots, cube roots and any nth root, with step-by-step simplification.
• Exponent CalculatorRaise a base to any power and see the exact answer when it is a whole number.
• Factorial CalculatorFind n! exactly, even for large numbers, and see how many digits it has.

Calculators for loans, interest, taxes and margins. Results are estimates for planning and are not financial advice.

• Loan CalculatorFind your monthly payment and total interest cost for a fixed-rate loan.
• Mortgage CalculatorEstimate the monthly cost of a home loan, including property tax and insurance.
• Compound Interest CalculatorProject the future value of savings or investments with regular deposits.
• Simple Interest CalculatorWork out interest that is not compounded.
• ROI CalculatorMeasure how much an investment or campaign returned compared with its cost.
• Sales Tax CalculatorAdd tax to a price, or work backwards from a total that includes tax.

Simple health calculators based on standard formulas. They give general estimates and do not replace advice from a medical professional.

• BMI CalculatorCheck your body mass index and the healthy weight range for your height.
• Calorie and BMR CalculatorEstimate how many calories your body burns at rest and in a normal day.
• Daily Water Intake CalculatorGet a rough daily water target from your weight, activity and climate.
• Ideal Weight CalculatorSee what four standard formulas suggest for your height and sex.
• Body Fat CalculatorEstimate body fat percentage with a tape measure.
• Heart Rate Zone CalculatorFind the heart rate ranges for warm-up, fat burning, aerobic and maximum effort.

Calculate with dates, convert between calendars and compare time zones without a spreadsheet.

• Age CalculatorFind out exactly how old you are, or how old someone was on any date.
• Date Difference CalculatorCalculate how much time lies between any two dates.
• Add or Subtract Days from a DateFind the date that is a number of days, months or years before or after another date.
• Business Days CalculatorCount the working days between two dates.
• Days Until CalculatorSee how long you have to wait for a date.
• Day of the Week CalculatorFind out which weekday a date falls on.

Handy everyday utilities that do not fit anywhere else, all free and most of them fully offline in your browser.

• QR Code GeneratorMake a QR code for a link, Wi-Fi login, contact card and more, and download it as PNG or SVG.
• QR Code ReaderFind out what a QR code contains before you open it.
• Barcode GeneratorCreate a barcode from any value and download it as an image.
• Password GeneratorCreate strong passwords that are never sent anywhere.
• Random Name PickerDraw winners from a list in one click.
• Dice RollerRoll dice for games, tabletop RPGs and decisions.