All 486 Free Online Tools
Search or filter the complete list, grouped by category and subcategory with the most popular tools first. Every tool has its own page and works without an account.
Showing all 486 tools
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Image & Design
Image Editing
- Image CompressorShrink image file size, with before/after.Open Tool
- Image ResizerResize images by pixels or percent.Open Tool
- Image CropperCrop pictures with a draggable box or exact numbers.Open Tool
- Background RemoverRemove plain backgrounds by colour (not AI).Open Tool
- Bulk Image ResizerResize up to 20 images at once, ZIP download.Open Tool
- Social Media ResizerFit pictures to post, cover and profile sizes.Open Tool
- Image RotatorRotate by 90, 180, 270 or any angle.Open Tool
- Image FlipperMirror images horizontally or vertically.Open Tool
- Add Text to ImageWrite captions and labels on a picture.Open Tool
- Image WatermarkAdd a text or logo watermark to images.Open Tool
- Circle Avatar CropperCrop a round avatar with zoom and pan.Open Tool
- Image UpscalerEnlarge pictures 2×, 3× or 4× with smoothing.Open Tool
- Image BlurBlur a whole picture with adjustable radius.Open Tool
- Image GrayscaleConvert colour pictures to black and white.Open Tool
- Image BrightnessMake a picture lighter or darker.Open Tool
- Image ContrastIncrease or decrease picture contrast.Open Tool
- Image SharpenerSharpen soft photos with an unsharp mask.Open Tool
- Rounded CornersRound image corners with a transparent PNG.Open Tool
- Image PixelatePixelate a picture into coloured blocks.Open Tool
- Sepia FilterGive photos a warm, vintage sepia tone.Open Tool
- Invert ColorsMake a colour negative of any picture.Open Tool
- Saturation AdjusterBoost or mute the colours in a picture.Open Tool
- Hue RotatorShift every colour around the colour wheel.Open Tool
- Vignette EffectDarken or lighten the edges of a photo.Open Tool
- Duotone EffectMap a picture to two chosen colours.Open Tool
- Image to ASCII ArtTurn a picture into text characters.Open Tool
- Placeholder GeneratorCreate sized placeholder images as PNG or SVG.Open Tool
Image Conversion
- Image Format ConverterConvert images between PNG, JPG, WebP and BMP.Open Tool
- JPG to PNGConvert JPG to PNG format.Open Tool
- PNG to JPGConvert PNG images to smaller JPG files.Open Tool
- HEIC to JPGConvert iPhone HEIC photos to JPG.Open Tool
- WebP to JPGConvert WebP images to JPG.Open Tool
- JPG to WebPConvert JPG photos to modern WebP.Open Tool
- PNG to WebPConvert PNG to WebP, keeping transparency.Open Tool
- WebP to PNGConvert WebP to lossless PNG.Open Tool
- Image to PDFCombine images into one PDF.Open Tool
- SVG to PNGRender SVG vector files as PNG images.Open Tool
- PNG to ICOMake multi-size ICO icons from PNG.Open Tool
- Image to Base64Turn an image into a Base64 data URI.Open Tool
- Base64 to ImageDecode Base64 text into a viewable image.Open Tool
- AVIF to JPGConvert AVIF pictures to JPG.Open Tool
- PNG to SVGTrace a PNG into a scalable SVG vector.Open Tool
- SVG to JPGRender SVG vector files as JPG images.Open Tool
- GIF to JPGConvert the first frame of a GIF to JPG.Open Tool
- GIF to PNGConvert the first frame of a GIF to PNG.Open Tool
- JPG to GIFConvert JPG photos to GIF images.Open Tool
- TIFF to JPGConvert TIFF scans to JPG, page by page.Open Tool
- ICO to PNGExtract every size from an ICO file as PNG.Open Tool
- JPG to BMPConvert JPG photos to 24-bit BMP.Open Tool
- BMP to JPGConvert large BMP bitmaps to compact JPG.Open Tool
Collage & Layout
- Collage MakerMake photo collages from up to 10 images.Open Tool
- Image CombinerStitch images side by side or top to bottom.Open Tool
- Image SplitterCut an image into a grid of tiles (ZIP).Open Tool
- Border & PaddingAdd padding, borders and rounded corners.Open Tool
- Before/After SliderCompare two images with a draggable slider.Open Tool
- Screenshot BeautifierAdd background, shadow and a window frame.Open Tool
Color & Palette
- Image Color PickerPick HEX, RGB and HSL colours from a photo.Open Tool
- Palette GeneratorComplementary, analogous, triadic palettes.Open Tool
- Palette ExtractorPull the dominant colours out of an image.Open Tool
- Screen Color PickerPick any colour on your screen (EyeDropper).Open Tool
- Random ColorsRandom colours and palettes with locks.Open Tool
- Shades and TintsDarker shades and lighter tints of a colour.Open Tool
- Color Name FinderFind the nearest named colour for a code.Open Tool
- Color MixerBlend two or more colours by ratio.Open Tool
GIF & Animation
- GIF MakerMake an animated GIF from images.Open Tool
- GIF ResizerResize animated GIFs and keep every frame.Open Tool
- GIF CropperCrop animated GIFs and keep all frames.Open Tool
- GIF Speed ChangerSpeed up or slow down a GIF losslessly.Open Tool
- GIF ReverserPlay a GIF backwards or ping-pong.Open Tool
- GIF Frame InspectorSee every GIF frame, delay and size; save PNGs.Open Tool
- GIF PlayerPlay, pause, step and loop GIFs at any speed.Open Tool
- Sprite Sheet AnimatorPreview sprite sheets as animations.Open Tool
Image Info & Metadata
Design Helpers
Files & Documents
PDF Tools
- PDF MergerCombine several PDFs into one file.Open Tool
- PDF CompressorReduce PDF size, with honest results.Open Tool
- PDF to JPGTurn PDF pages into JPG images.Open Tool
- JPG to PDFCombine JPG photos into one PDF.Open Tool
- PDF SplitterSplit a PDF by page, count or ranges.Open Tool
- Sign PDFDraw or type a signature and place it on a PDF.Open Tool
- PDF Page RotatorRotate all or selected PDF pages.Open Tool
- PDF to TextExtract the text from a PDF as plain text.Open Tool
- PNG to PDFCombine PNG images into one PDF.Open Tool
- PDF to PNGTurn PDF pages into PNG images.Open Tool
- PDF Unlock UtilityRemove a PDF password you already know.Open Tool
- PDF Password ProtectAdd a password and permissions to a PDF.Open Tool
- PDF WatermarkAdd a text or image watermark to PDF pages.Open Tool
- PDF Page NumbersAdd page numbers to a PDF in six positions.Open Tool
- PDF Page ExtractorPull chosen pages into a new PDF.Open Tool
- PDF Page ReorderRearrange, duplicate or delete PDF pages.Open Tool
- PDF Form FillerFill in interactive PDF form fields and save.Open Tool
- Text to PDFTurn plain text into a neat, paginated PDF.Open Tool
- PDF CropTrim PDF margins or crop to an exact box.Open Tool
- PDF FlattenFlatten form fields and annotations into the page.Open Tool
- PDF CompareCompare two PDFs by text, metadata and appearance.Open Tool
- PDF Metadata ViewerView and edit PDF title, author, dates and page sizes.Open Tool
Document Conversion
- PDF to WordExtract PDF text into an editable .docx file.Open Tool
- Word to PDFTurn a .docx file into a basic-layout PDF.Open Tool
- PDF to ExcelPull table-like PDF text into an .xlsx file.Open Tool
- Excel to PDFPrint Excel sheets to a simple table PDF.Open Tool
- PowerPoint to PDFTurn .pptx slides into a basic-layout PDF.Open Tool
- PDF to PowerPointPut each PDF page on a slide as an image.Open Tool
- Markdown to HTMLConvert Markdown to sanitised HTML.Open Tool
- Markdown to PDFTurn Markdown notes into a paginated PDF.Open Tool
- HTML to MarkdownConvert HTML into tidy Markdown text.Open Tool
- DOCX to TXTExtract plain text from a Word document.Open Tool
- TXT to DOCXTurn plain text into a Word .docx file.Open Tool
- DOCX to HTMLConvert Word documents to clean HTML.Open Tool
- HTML to DOCXTurn HTML into an editable Word document.Open Tool
- RTF to TXTStrip RTF formatting and keep the text.Open Tool
Spreadsheet & CSV
- CSV to XLSXConvert CSV or TSV data into an Excel file.Open Tool
- XLSX to CSVExport Excel sheets to CSV, one or all.Open Tool
- CSV ViewerView CSV files as a sortable, searchable table.Open Tool
- XLSX ViewerOpen Excel sheets in your browser and search them.Open Tool
- CSV MergerCombine several CSV files, matching their headers.Open Tool
- CSV SplitterSplit a large CSV into smaller files in a ZIP.Open Tool
- CSV CleanerTrim cells, drop duplicate rows and empty columns.Open Tool
- CSV to HTML TableConvert CSV into accessible HTML table markup.Open Tool
File Utilities
- ZIP ExtractorList and download files from a ZIP archive safely.Open Tool
- ZIP CreatorPack files into a ZIP archive in your browser.Open Tool
- File to Base64Encode any file as Base64 text or a data URI.Open Tool
- File ChecksumMD5, SHA-1, SHA-256 and SHA-512 hashes of files.Open Tool
- Bulk File RenamerRename many files with patterns and numbering.Open Tool
- File Type DetectorFind a file's real type and spot wrong extensions.Open Tool
- Base64 to FileDecode Base64 or a data URI back into a file.Open Tool
- Encoding ConverterConvert legacy-encoded text files to UTF-8.Open Tool
- File Splitter & JoinerSplit a file into parts and join parts back.Open Tool
- Filename SanitizerMake file names safe on Windows, macOS and Linux.Open Tool
- Line Ending ConverterConvert between CRLF (Windows) and LF (Unix).Open Tool
- Hex ViewerView file bytes in hex and ASCII with offsets.Open Tool
Calculators
Finance
- Loan EMI CalculatorMonthly EMI, total interest and repayment schedule.Open Tool
- GST CalculatorAdd or remove India GST, CGST/SGST/IGST split.Open Tool
- Compound Interest CalculatorFuture value with compounding and monthly deposits.Open Tool
- SIP CalculatorProject the value of monthly SIP investments.Open Tool
- Tax CalculatorEstimate income tax by slabs, or add/remove VAT.Open Tool
- Discount CalculatorFinal price, savings and stacked discounts.Open Tool
- FD CalculatorFD maturity value with any compounding frequency.Open Tool
- Simple Interest CalculatorInterest, principal, rate or time from the other three.Open Tool
- CAGR CalculatorCompound annual growth rate between two values.Open Tool
- ROI CalculatorReturn on investment and annualised ROI.Open Tool
- Profit MarginGross margin, profit and selling price.Open Tool
- RD CalculatorRD maturity with quarterly compounding.Open Tool
- PPF CalculatorProject Public Provident Fund value at your rate.Open Tool
- Salary to HourlyConvert pay between annual, monthly, hourly and more.Open Tool
- Tip CalculatorTip amount, total and each person's share.Open Tool
- Loan PrepaymentInterest saved and tenure cut by prepaying a loan.Open Tool
- Inflation CalculatorFuture cost or today's value at your inflation rate.Open Tool
- Retirement SavingsRetirement corpus and monthly saving needed.Open Tool
- Gratuity CalculatorEstimate gratuity with the Indian 15/26 formula.Open Tool
- Bill SplitterSplit a bill evenly or by shares with tax and tip.Open Tool
- Markup CalculatorMarkup percentage and selling price vs margin.Open Tool
- Break-Even CalculatorBreak-even units and revenue from your costs.Open Tool
- Unit Price CalculatorCompare up to five packs by price per unit.Open Tool
- Depreciation CalculatorStraight-line and declining-balance schedules.Open Tool
Math
- Percentage CalculatorFind percentages, change and differences.Open Tool
- Basic CalculatorCalculator with keypad, brackets and history.Open Tool
- Scientific CalculatorTrig, logs, powers, factorials and memory keys.Open Tool
- Fraction CalculatorAdd, subtract, multiply and divide fractions.Open Tool
- Average CalculatorMean, median, mode, range, std dev, weighted mean.Open Tool
- Ratio CalculatorSimplify ratios, solve proportions, split totals.Open Tool
- Standard DeviationPopulation and sample SD and variance.Open Tool
- Quadratic SolverReal and complex roots with the discriminant.Open Tool
- Area and PerimeterArea and perimeter of ten 2D shapes.Open Tool
- LCM and GCDLeast common multiple and greatest common divisor.Open Tool
- Rounding CalculatorRound to decimals, sig figs or a multiple.Open Tool
- Pythagorean TheoremFind a missing side of a right triangle.Open Tool
- Prime Number CheckerIs it prime? Prime factors and divisors.Open Tool
- Probability CalculatorSingle, combined, conditional and binomial odds.Open Tool
- Permutations & CombinationsnPr and nCr, with and without repetition.Open Tool
- Shape Volume CalculatorVolume and surface area of 3D shapes.Open Tool
- Matrix CalculatorAdd, multiply, invert and find determinants.Open Tool
- Sig Figs CalculatorCount and round to significant figures.Open Tool
Health
- BMI CalculatorBMI, WHO category and healthy weight range.Open Tool
- Daily Calorie CalculatorDaily energy needs (TDEE) by activity level.Open Tool
- BMR CalculatorBasal metabolic rate by Mifflin-St Jeor.Open Tool
- Body Fat CalculatorBody fat % by the U.S. Navy tape method.Open Tool
- Due Date CalculatorDue date from last period or conception.Open Tool
- Ideal Weight CalculatorIdeal weight by Devine, Robinson, Miller, Hamwi.Open Tool
- Water Intake CalculatorGeneral daily water intake estimate.Open Tool
- Heart Rate ZonesTraining zones from age or max heart rate.Open Tool
- Sleep Cycle CalculatorBedtimes or wake times in 90-minute cycles.Open Tool
Date & Time
- Age CalculatorExact age in years, months and days.Open Tool
- Date Difference CalculatorDays between dates; add or subtract time.Open Tool
- Add or Subtract DaysAdd or subtract days, weeks, months, years.Open Tool
- Business Days CalculatorWorking days between dates, minus holidays.Open Tool
- Time Duration CalculatorHours between times, sum and add durations.Open Tool
- Day of the Week FinderFind the weekday for any date.Open Tool
- Week Number CalculatorISO week number and dates of any week.Open Tool
- Timesheet CalculatorWeekly work hours with breaks and overtime.Open Tool
Everyday & Education
- GPA CalculatorWeighted GPA from grades and credits.Open Tool
- CGPA to PercentageCGPA to percentage with an editable multiplier.Open Tool
- Grade CalculatorCurrent grade and the score you need on the rest.Open Tool
- Fuel Cost CalculatorTrip fuel cost from distance, mileage and price.Open Tool
- Electricity CostAppliance energy use and running cost.Open Tool
- Speed Distance TimeSolve for speed, distance or time.Open Tool
- Download TimeHow long a file takes at your connection speed.Open Tool
- Ohm's Law CalculatorVoltage, current, resistance and power.Open Tool
Text & Writing
Counters & Statistics
- Word CounterCount words, characters and more.Open Tool
- Character CounterCount characters, bytes and check post limits.Open Tool
- Social Media CounterCheck a post against 16 platform length limits.Open Tool
- Word Frequency CounterCount how often each word appears.Open Tool
- Reading TimeEstimate reading and speaking time.Open Tool
- Sentence CounterCount sentences and see how they were split.Open Tool
- Paragraph CounterCount paragraphs and preview each one.Open Tool
- Keyword CounterCount chosen keywords in a text.Open Tool
- Readability CheckerFlesch Reading Ease and grade level for any text.Open Tool
Case & Formatting
- Text Case ConverterConvert to upper, lower, title, camel, snake case.Open Tool
- Uppercase ConverterTurn text into UPPER CASE letters.Open Tool
- Lowercase ConverterTurn text into lower case letters.Open Tool
- Title Case ConverterCapitalize headlines in AP or Chicago style.Open Tool
- Sentence Case ConverterCapitalize only the first letter of each sentence.Open Tool
- Fancy Text GeneratorBold, italic, script and monospace Unicode text.Open Tool
- Code Case ConvertercamelCase, snake_case, kebab-case and more.Open Tool
- Strikethrough TextS̶t̶r̶i̶k̶e̶ and u̲n̲d̲e̲r̲l̲i̲n̲e̲ plain text.Open Tool
- Upside Down TextFlip ʇxǝʇ upside down or mirror it.Open Tool
- Add Line NumbersNumber every line, or strip existing numbers.Open Tool
- Prefix and Suffix AdderAdd text to the start and end of each line.Open Tool
- Text WrapperWrap lines at a fixed width with indentation.Open Tool
- Tab and Space ConverterConvert tabs to spaces or spaces to tabs.Open Tool
Text Cleanup
- Remove Line BreaksJoin wrapped lines into clean paragraphs.Open Tool
- Remove Extra SpacesCollapse spaces, tabs and blank lines.Open Tool
- Remove Duplicate LinesDelete repeated lines and see what was removed.Open Tool
- Find and ReplaceFind and replace text with plain or regex search.Open Tool
- Remove Empty LinesDelete blank and whitespace-only lines.Open Tool
- Strip HTML TagsGet clean plain text out of HTML.Open Tool
- Text TrimmerTrim whitespace, characters and cut text to length.Open Tool
- Remove AccentsTurn café and Ångström into cafe and Angstrom.Open Tool
- Remove PunctuationStrip punctuation, keeping what you choose.Open Tool
- Remove EmojisStrip emoji and pictographs, keep the words.Open Tool
- Smart Quotes ConverterCurly quotes to straight quotes and back.Open Tool
- Invisible CharactersFind zero-width spaces, BOMs and hidden characters.Open Tool
Transform & Compare
- Text Diff CheckerCompare two texts and highlight differences.Open Tool
- Sort Text LinesSort lines A-Z, numerically, by length or shuffle.Open Tool
- Text to SlugTurn titles into clean URL slugs.Open Tool
- Text RepeaterRepeat a word or text many times.Open Tool
- Reverse TextReverse letters, words or lines of text.Open Tool
- Word Cloud GeneratorMake a word cloud and save it as PNG or SVG.Open Tool
- List to Delimited TextTurn a list into comma-separated text and back.Open Tool
- Shuffle LinesRandomly reorder lines with a secure shuffle.Open Tool
- Text Template FillerMail merge: fill {{placeholders}} from CSV rows.Open Tool
- Text Column ExtractorPull columns out of CSV, TSV or delimited text.Open Tool
- Palindrome CheckerCheck if a word, phrase or number is a palindrome.Open Tool
- Anagram CheckerCompare two texts' letters and spot differences.Open Tool
Generators
Extractors
Encoding & Ciphers
- Morse Code TranslatorText to Morse and back, with optional audio.Open Tool
- Text to BinaryConvert text to UTF-8 binary bytes.Open Tool
- Binary to TextDecode binary bytes back into UTF-8 text.Open Tool
- Caesar Cipher / ROT13Shift-cipher encoder and decoder (educational).Open Tool
- NATO Phonetic AlphabetSpell text as Alfa, Bravo, Charlie...Open Tool
- Unicode Character LookupCode point, name and escapes for any character.Open Tool
Converters
Unit Converters
- LengthConvert metric, imperial and nautical lengths.Open Tool
- Weight (Mass)Convert kg, lb, oz, stone, tonnes and carats.Open Tool
- TemperatureCelsius, Fahrenheit, Kelvin, Rankine, Réaumur.Open Tool
- AreaConvert m², ft², acres, hectares and more.Open Tool
- VolumeConvert liters, gallons, pints, m³ and more.Open Tool
- SpeedConvert m/s, km/h, mph, knots and Mach.Open Tool
- Data StorageConvert bytes, KB, MB, GB, TB and KiB, MiB, GiB.Open Tool
- TimeConvert seconds, minutes, hours, days and years.Open Tool
- Cooking MeasurementConvert cups, tbsp, tsp, ml, grams and ounces.Open Tool
- Shoe SizeUS, UK, EU and foot-length sizes for adults.Open Tool
- EnergyConvert joules, kWh, calories, BTU and eV.Open Tool
- PressureConvert Pa, kPa, bar, psi, atm and mmHg.Open Tool
- PowerConvert watts, kW, horsepower, BTU/h and more.Open Tool
- Fuel EconomyConvert mpg (US/UK), km/L and L/100 km.Open Tool
- Data Transfer RateConvert Mbps, MB/s, Gbps and other speeds.Open Tool
- AngleConvert degrees, radians, gradians, turns and mils.Open Tool
- FrequencyConvert Hz, kHz, MHz, GHz, RPM and rad/s.Open Tool
- Blood Sugar UnitsConvert glucose between mg/dL and mmol/L.Open Tool
- Paper SizeA, B, C, US and Arch sizes in mm, inches and pixels.Open Tool
- Battery CapacityConvert mAh, Ah, Wh and kWh at a given voltage.Open Tool
- DensityConvert kg/m³, g/cm³, lb/ft³ and more.Open Tool
- ForceConvert newtons, kN, lbf, kgf and more.Open Tool
- TorqueConvert N·m, lbf·ft, kgf·m and more.Open Tool
- AccelerationConvert m/s², ft/s², g-force and more.Open Tool
- Flow RateConvert L/min, m³/h, GPM, CFM and more.Open Tool
Date & Time Converters
Number Converters
- Number to WordsWrite numbers and amounts in words, cheque style.Open Tool
- Roman NumeralsNumbers to Roman numerals and back, validated.Open Tool
- Number BaseBinary, octal, decimal, hex and any base 2–36.Open Tool
- Fraction ↔ DecimalFractions to decimals and back, with repeats.Open Tool
- Lakh / Crore ↔ MillionLakh and crore to million and billion, regrouped.Open Tool
- Scientific NotationStandard, scientific, E and engineering notation.Open Tool
Developer & Web
Format & Validate
- JSON FormatterPretty-print JSON with clear error locations.Open Tool
- JSON ValidatorCheck JSON syntax and find the exact error.Open Tool
- Regex TesterTest JavaScript regular expressions safely.Open Tool
- HTML FormatterBeautify and indent HTML code.Open Tool
- SQL FormatterBeautify SQL with dialect-aware formatting.Open Tool
- XML FormatterPretty-print or minify XML with error locations.Open Tool
- JavaScript FormatterBeautify JavaScript code with clean indentation.Open Tool
- CSS FormatterBeautify and indent CSS stylesheets.Open Tool
- JSON MinifierRemove whitespace from JSON to shrink it.Open Tool
- JavaScript MinifierMinify JavaScript and see the size saved.Open Tool
- CSS MinifierCompress CSS by removing comments and whitespace.Open Tool
- HTML MinifierRemove comments and extra whitespace from HTML.Open Tool
- JSON Tree ViewerExplore JSON as an expandable, keyboard-friendly tree.Open Tool
- JSON DiffCompare two JSON documents and list every change.Open Tool
- XML ValidatorCheck XML is well-formed and find the error.Open Tool
- YAML FormatterValidate YAML and re-indent it cleanly.Open Tool
- SQL MinifierStrip comments and extra whitespace from SQL.Open Tool
- XML MinifierStrip whitespace and comments from XML.Open Tool
- JSON Schema ValidatorValidate JSON against a JSON Schema.Open Tool
- JSONPath TesterRun JSONPath queries against your JSON.Open Tool
- XPath TesterEvaluate XPath expressions against XML.Open Tool
Encoding & Security
- Base64 EncoderEncode text or any file to Base64.Open Tool
- Base64 DecoderDecode Base64 to text or a downloadable file.Open Tool
- URL EncoderPercent-encode text or a full URL safely.Open Tool
- URL DecoderDecode %XX text and break a URL into parts.Open Tool
- JWT DecoderDecode a JWT header and payload (no verification).Open Tool
- UUID GeneratorGenerate v4 and v7 UUIDs, and check a UUID.Open Tool
- Hash GeneratorMD5, SHA-1, SHA-256, SHA-384 and SHA-512 hashes.Open Tool
- HTML Entity EncoderConvert text to HTML entities.Open Tool
- HTML Entity DecoderConvert HTML entities back to text.Open Tool
- Bcrypt GeneratorCreate and verify bcrypt password hashes.Open Tool
- HMAC GeneratorHMAC-SHA256, SHA-384 and SHA-512 signatures.Open Tool
- AES Encrypt/DecryptEncrypt text with a passphrase (AES-256-GCM).Open Tool
- String EscaperEscape text for JSON, JS, HTML, CSV and SQL.Open Tool
- Unicode EscapeConvert text to and from \uXXXX and &#x; escapes.Open Tool
- Hex Encoder/DecoderConvert text to hexadecimal bytes and back.Open Tool
- Base32 Encoder/DecoderEncode and decode RFC 4648 Base32.Open Tool
- Punycode ConverterConvert international domain names to xn-- form.Open Tool
- ULID / NanoID GeneratorGenerate sortable ULIDs or compact NanoIDs.Open Tool
- JWT GeneratorCreate HS256 test tokens for development.Open Tool
Data Formats
- JSON to CSVConvert JSON arrays and objects to CSV.Open Tool
- CSV to JSONConvert CSV rows to a JSON array of objects.Open Tool
- XML to JSONConvert XML to JSON with attribute options.Open Tool
- JSON to XMLConvert JSON to XML with a custom root element.Open Tool
- YAML to JSONConvert YAML to JSON with clear error reporting.Open Tool
- JSON to YAMLConvert JSON to clean, readable YAML.Open Tool
- Markdown TableBuild Markdown tables in an editable grid.Open Tool
- JSON to TypeScriptGenerate TypeScript interfaces from sample JSON.Open Tool
- HTML to JSXConvert HTML snippets into React JSX.Open Tool
- Mock JSON DataGenerate clearly fictional sample JSON records.Open Tool
- TOML to JSONConvert TOML configuration files to JSON.Open Tool
SEO
- Keyword Density CheckerKeyword density and top phrases.Open Tool
- SERP Snippet PreviewPreview a Google result snippet.Open Tool
- Meta Title CheckerCheck title tag length and pixel width.Open Tool
- Meta Description CheckerCheck description length and preview it.Open Tool
- Robots.txt GeneratorBuild a valid robots.txt file.Open Tool
- Sitemap XML GeneratorCreate a sitemap.xml from a URL list.Open Tool
- Open Graph PreviewPreview link cards and og: meta tags.Open Tool
- URL Slug GeneratorMake clean SEO-friendly URL slugs.Open Tool
- JSON-LD Schema GeneratorBuild Organization, Article, FAQ and breadcrumb schema.Open Tool
- Hreflang GeneratorCreate hreflang tags for language and region versions.Open Tool
CSS & Frontend
- Color Code ConverterConvert HEX, RGB, HSL, HWB and CMYK colour codes.Open Tool
- CSS Gradient GeneratorDesign linear, radial and conic CSS gradients.Open Tool
- Meta Tag GeneratorGenerate title, description, Open Graph and Twitter tags.Open Tool
- Box Shadow GeneratorLayer up to three box shadows with a live preview.Open Tool
- Border Radius GeneratorShape corners with individual and elliptical radii.Open Tool
- Flexbox PlaygroundTry flexbox container and item settings live.Open Tool
- CSS Grid GeneratorBuild grid templates and named areas with CSS.Open Tool
- CSS Unit ConverterConvert px, rem, em, pt, vw and vh with your base size.Open Tool
- SVG OptimizerMinify and clean SVG markup with SVGO.Open Tool
- CSS Spinner GeneratorCreate CSS spinners that respect reduced motion.Open Tool
- HTML Table GeneratorBuild accessible HTML tables with caption and scope.Open Tool
- Cubic Bezier EditorEdit CSS easing curves with a draggable graph.Open Tool
- Clip-Path GeneratorCreate polygon, circle, ellipse and inset clip paths.Open Tool
- Fluid Type CalculatorGenerate CSS clamp() values for fluid font sizes.Open Tool
- SVG to Data URIEncode SVG as a compact data URI for CSS.Open Tool
- Specificity CalculatorCalculate and compare CSS selector specificity.Open Tool
- .gitignore GeneratorBuild a .gitignore file from bundled templates.Open Tool
URL & HTTP
- URL ParserSplit a URL into parts and edit its query parameters.Open Tool
- UTM Link BuilderBuild campaign URLs with UTM parameters.Open Tool
- Subnet CalculatorIPv4 CIDR calculator: network, broadcast, host range.Open Tool
- HTTP Status CodesSearch HTTP status codes, meanings and common causes.Open Tool
- Cron ExplainerExplain cron schedules in plain English with next runs.Open Tool
- User Agent ParserParse a user-agent string into browser, OS and device.Open Tool
- Chmod CalculatorConvert Unix permissions between numeric and symbolic.Open Tool
- .htaccess RedirectsGenerate Apache 301/302 redirect rules from URL lists.Open Tool
- MIME Type LookupFind MIME types by extension and extensions by type.Open Tool
Accessibility
- WCAG Contrast CheckerCheck text and UI colour contrast against WCAG 2.2.Open Tool
- Contrast Ratio CalculatorContrast maths for any CSS colour, with transparency.Open Tool
- Color Blindness SimulatorPreview images and colours as colour-blind users may see.Open Tool
- Accessible Palette GeneratorTints, shades and colour harmonies with contrast info.Open Tool
- HTML Accessibility CheckerRule-based HTML accessibility scan with WCAG 2.2 references.Open Tool
- Heading Structure CheckerOutline headings and landmarks; flag skipped levels.Open Tool
- Alt Text ChecklistDecide what alt text an image needs and lint your own.Open Tool
- Keyboard Accessibility ChecklistInteractive keyboard test checklist with WCAG 2.2 criteria.Open Tool
- Link Text CheckerFind vague, empty or confusing link text.Open Tool
- ARIA Attribute ReferenceSearchable WAI-ARIA 1.2 roles, states and properties.Open Tool
- Target Size CheckerCheck control size and spacing against WCAG 2.5.8.Open Tool
- Text Spacing TesterApply WCAG 1.4.12 text spacing to HTML to find clipping.Open Tool
Productivity
Codes & Scanning
Random & Generators
- Password GeneratorGenerate strong random passwords.Open Tool
- Random Number GeneratorRandom integers or decimals in a range.Open Tool
- Picker WheelSpin a wheel of names or options to pick one fairly.Open Tool
- Coin FlipFlip one or many coins with running statistics.Open Tool
- Dice RollerRoll d4 to d100 or custom dice with totals.Open Tool
- Team GeneratorSplit a list of names into random, balanced teams.Open Tool
Timers & Clocks
- Countdown TimerCount down a duration or to a date, with an alert.Open Tool
- StopwatchPrecise online stopwatch with laps and CSV export.Open Tool
- Alarm ClockSet browser alarms with sound (tab must stay open).Open Tool
- Pomodoro TimerFocus in work/break cycles with optional sounds.Open Tool
- World ClockLive clocks for the cities you choose.Open Tool
- Fullscreen ClockBig digital clock with 12/24-hour, seconds and date.Open Tool
- Interval TimerRepeating work and rest intervals for HIIT or study.Open Tool
- Breathing TimerGuided box, 4-7-8 and calm breathing pacer.Open Tool
Work Helpers
Planning & Notes
- Online NotepadQuick plain-text notes that autosave in this browser.Open Tool
- To-Do ListA simple task list saved only in this browser.Open Tool
- Printable CalendarMake monthly or yearly calendars to print or save as PDF.Open Tool
- Meeting PlannerFind hours that suit people in several time zones.Open Tool
- Habit TrackerTick off daily habits on a monthly grid; stays local.Open Tool
- Meeting CostEstimate what a meeting costs in people's time.Open Tool
Audio & Video
Video Tools
- Video to GIFTurn a section of a video into an animated GIF.Open Tool
- Video Frame GrabberSave still frames from a video as PNG, JPG or WebP.Open Tool
- Loop & Speed PlayerA-B loop, slow motion and frame stepping for local videos.Open Tool
- Video Metadata ViewerSee duration, resolution, codecs and bitrate of a video.Open Tool
- Bitrate & Size CalculatorEstimate video file size from bitrate, or bitrate from size.Open Tool
Audio Editing
- Audio TrimmerCut a section from an audio file on its waveform.Open Tool
- Audio to WAVDecode MP3, OGG, M4A and more to WAV files.Open Tool
- Audio JoinerJoin several audio clips into one WAV file.Open Tool
- Audio Volume ChangerBoost, lower or normalise an audio file's volume.Open Tool
- Audio Speed ChangerSpeed up or slow down audio (pitch changes too).Open Tool
- Audio Fade In & OutAdd smooth fade-ins and fade-outs to audio.Open Tool
- Audio ReverserPlay any audio clip backwards and save it.Open Tool
- Audio Waveform ViewerSee an audio file's waveform and save it as PNG.Open Tool
Recording & Testing
- Voice RecorderRecord your voice and download the recording.Open Tool
- Screen RecorderRecord your screen, a window or a tab as video.Open Tool
- Webcam TestCheck your camera, its resolution and frame rate.Open Tool
- Microphone TestCheck your mic with a live level meter and playback.Open Tool
- Speaker & Headphone TestPlay left, right and stereo test tones safely.Open Tool
- Webcam Photo CaptureTake photos with your webcam and save them.Open Tool
Speech
Sound & Music
- Instrument TunerTune guitar, bass, ukulele and more with your mic.Open Tool
- MetronomeSteady click with time signature and accents.Open Tool
- Tone GeneratorPlay sine, square, triangle or sawtooth tones.Open Tool
- Noise GeneratorWhite, pink and brown noise with a sleep timer.Open Tool
- BPM Tap CounterFind the tempo of a song by tapping along.Open Tool
Screen & Display
Solid Color Screens
Monitor Tests
- Dead Pixel TestStep through colours to spot dead or stuck pixels.Open Tool
- Refresh Rate CheckerEstimate your display's refresh rate in Hz.Open Tool
- Test Pattern GeneratorGrid, checkerboard, colour bars and convergence.Open Tool
- Backlight Bleed TestDark and grey screens to check bleed and uniformity.Open Tool
- Touch Screen TesterSee touch points, multi-touch count and coverage.Open Tool
- Motion & Ghosting TestUser-started moving objects to check motion blur.Open Tool
- Gradient Banding TestSmooth ramps to reveal banding and bit depth.Open Tool
- Gamma & Black Level TestPatterns to check gamma, black and white levels.Open Tool
Display Info
- Screen Resolution CheckerScreen size, pixel ratio, colour depth and more.Open Tool
- Viewport Size CheckerLive viewport size with breakpoint indicator.Open Tool
- Screen PPI CalculatorPixels per inch from resolution and diagonal.Open Tool
- On-Screen Pixel RulerDraggable, keyboard-movable ruler in pixels.Open Tool
OS Screen Simulations
- Windows 10-Style Error SimLabelled blue stop-screen simulation for demos.Open Tool
- Windows 11-Style Error SimLabelled dark stop-screen simulation with progress.Open Tool
- macOS-Style Error SimLabelled restart-message and restart-progress scenes.Open Tool
- System Update SimulatorLabelled update-progress scene, Windows- or macOS-style.Open Tool
- Loading Screen SimulatorSpinner and progress-bar loading scenes.Open Tool
- Error Dialog GeneratorMake a labelled error-dialog image and export PNG.Open Tool
- App Crash SimulatorLabelled “application stopped responding” scene.Open Tool
- Warning Scene SimulatorLabelled generic warning screen for demos.Open Tool
Browser Utilities
Device & Browser Info
- Browser & Device InfoSee what your browser reports about your device.Open Tool
- Feature DetectorCheck support for WebP, AVIF, WebGL, Web Share and more.Open Tool
- Geolocation FinderShow your device's coordinates after permission.Open Tool
- Cookie & Storage CheckCheck cookies, localStorage, IndexedDB and quota.Open Tool
- Installed Font PreviewerPreview your text in fonts installed on this device.Open Tool
Input Testers
- Keyboard TesterSee key, code and modifiers for every key press.Open Tool
- Mouse & Click TesterTest mouse buttons, double-click, scroll and position.Open Tool
- Gamepad TesterTest controller buttons, triggers and sticks.Open Tool
- Clipboard InspectorSee every format inside pasted clipboard data.Open Tool