Free Web Tools
A growing set of fast, private utilities that run entirely in your browser — what you enter never leaves your device. Built by Patrick Bushe.
CSS Font Feature Settings
Preview font-feature-settings for ligatures, tabular numbers, and alternate glyphs. Free and private in your browser, with nothing uploaded and no account.
Open ToolCSS Font Variant Caps
Preview font-variant-caps for small caps, all-small-caps, and unicase styles. A label system can test small caps for compact section headings.
Open ToolCSS Grid Auto Flow
Compare grid-auto-flow row, column, dense, and column dense placement behavior. Free and private in your browser, with nothing uploaded and no account.
Open ToolCSS Hanging Punctuation
Preview hanging-punctuation for pull quotes and editorial text blocks with a live preview and one-click copy. Free and private — nothing is uploaded.
Open ToolCSS Hover Underline Animation
Build CSS hover underline animation in your browser with a live preview and one-click copy — free and private, generated locally in your browser with no.
Open ToolCSS Image Rendering
Preview image-rendering values for pixel art, screenshots, and scaled icons. Free and private in your browser, with nothing uploaded and no account.
Open ToolCSS Inline Edit Field
Build CSS inline edit field in your browser with a live preview and one-click copy — free and private, generated locally in your browser with no upload and no.
Open ToolCSS Input Validation State
Build CSS input validation state in your browser with a live preview and one-click copy — free and private, generated locally in your browser with no upload.
Open ToolCSS Keyframe Bounce Shake Presets
Free CSS keyframe preset generator for bounce, shake, pulse, and wobble animations. Preview and copy CSS locally.
Open ToolCSS Layered Border Generator
Generate CSS layered border in your browser with a live preview and one-click copy — free and private, generated locally in your browser with no upload and no.
Open ToolCSS Layered Z Index
Create named z-index layers for dropdowns, sticky bars, modals, and toasts. Everything runs locally in your browser with nothing uploaded and no account needed.
Open ToolCSS Letter Spacing Previewer
Free CSS letter-spacing previewer for headings, labels, and UI text. Compare tracking values locally.
Open ToolCSS Marquee Animation CSS
Build CSS marquee animation CSS in your browser with a live preview and one-click copy — free and private, generated locally in your browser with no upload.
Open ToolCSS Minmax Grid Playground
Tune repeat, minmax, gap, and auto-fit values for responsive card grids with a live preview and one-click copy. Free and private — nothing is uploaded.
Open ToolCSS Navbar
Build CSS navbar in your browser with a live preview and one-click copy. Free and private: everything is generated locally in your browser with no upload.
Open ToolCSS OpenType Features Previewer
Use this free CSS OpenType features previewer in your browser to build font-feature-settings CSS from OpenType feature toggles. Output stays private and local.
Open ToolCSS Outline Generator
Use this free CSS outline generator in your browser to build and preview CSS outline width style color and offset. Output stays private and local.
Open ToolCSS Perspective Playground
Use this free CSS perspective playground in your browser to build perspective and 3D rotation CSS with transform origin. Output stays private and local.
Open ToolCSS Placeholder Style
Build placeholder selectors for color, opacity, and font style across form fields. Free and private in your browser, with nothing uploaded and no account.
Open ToolCSS Print Invoice Layout
Work with CSS print invoice layout in your browser with a live preview and one-click copy — free and private, generated locally in your browser with no upload.
Open ToolCSS Progress Bar
Build CSS progress bar in your browser with a live preview and one-click copy. Free and private: everything is generated locally in your browser with no upload.
Open ToolCSS Radial Glow Generator
Generate CSS radial glow in your browser with a live preview and one-click copy. It runs entirely client-side, so nothing is uploaded and no account is needed.
Open ToolCSS Responsive Card Grid
Build CSS responsive card grid in your browser with a live preview and one-click copy — free and private, generated locally in your browser with no upload and.
Open ToolCSS Scroll Fade Mask
Build CSS scroll fade mask in your browser with a live preview and one-click copy — free and private, generated locally in your browser with no upload and no.
Open ToolCSS Scroll Padding
Generate scroll-padding rules that keep anchored sections below sticky headers. Free and private in your browser, with nothing uploaded and no account.
Open ToolCSS Scroll Progress Bar
Build CSS scroll progress bar in your browser with a live preview and one-click copy — free and private, generated locally in your browser with no upload and.
Open ToolCSS Scroll Snap Generator
Use this free CSS scroll snap generator in your browser to build scroll container and item snap alignment CSS. Output stays private and local.
Open ToolCSS Scrollbar Styler
Free CSS scrollbar styler for thumb, track, width, and radius values. Preview custom scrollbar CSS locally.
Open ToolCSS Selection Style Generator
Use this free CSS selection style generator in your browser to build scoped selection foreground and background CSS. Output stays private and local.
Open ToolCSS Shape Outside Generator
Use this free CSS shape outside generator in your browser to build circular or elliptical shape-outside CSS with shape margin. Output stays private and local.
Open ToolCSS Sidebar Collapse
Build CSS sidebar collapse in your browser with a live preview and one-click copy — free and private, generated locally in your browser with no upload and no.
Open ToolCSS Soft Shadow Card Generator
Generate CSS soft shadow card in your browser with a live preview and one-click copy — free and private, generated locally in your browser with no upload and.
Open ToolCSS Spotlight Card
Build CSS spotlight card in your browser with a live preview and one-click copy. It runs entirely client-side, so nothing is uploaded and no account is needed.
Open ToolCSS Stepper Component
Build CSS stepper component in your browser with a live preview and one-click copy — free and private, generated locally in your browser with no upload and no.
Open ToolCSS Steps Timing Function
Preview CSS steps timing functions for sprite sheets and stepped loaders. A 12-frame sprite can use steps(12, end) so each frame snaps instead of easing.
Open ToolCSS Supports Query
@supports asks the browser whether it understands a property and value pair before applying a block of CSS. Free and private — nothing is uploaded.
Open ToolCSS Text Box Trim
Preview text-box trim ideas for tighter typography around headings and labels. Free and private in your browser, with nothing uploaded and no account.
Open ToolCSS Toast Notification
Build CSS toast notification in your browser with a live preview and one-click copy — free and private, generated locally in your browser with no upload and.
Open ToolCSS Tooltip Component
Work with CSS tooltip component in your browser with a live preview and one-click copy — free and private, generated locally in your browser with no upload.
Open ToolCSS Transform Generator
Generate rotate and scale transform CSS.
Open ToolCSS Triangle Arrow Generator
Free CSS triangle and arrow generator using the border trick. Choose direction, size, and color locally.
Open ToolCSS Unit Converter
Convert px, rem, em, vw, vh, and percent values with configurable settings.
Open ToolCSS White Space
Compare white-space modes for preserving line breaks, wrapping, and copied text. Free and private in your browser, with nothing uploaded and no account.
Open ToolCSS Writing Mode
Generate writing-mode and text-orientation rules for vertical labels and side tabs. Free and private in your browser, with nothing uploaded and no account.
Open ToolCSS Writing Mode Layout Preview
Preview CSS writing mode layout in your browser with a live preview and one-click copy — free and private, generated locally in your browser with no upload.
Open ToolCSS Writing Mode Previewer
Use this free CSS writing mode previewer in your browser to preview vertical and horizontal writing-mode with text orientation. Output stays private and local.
Open ToolCSV Diff Table Viewer
Convert CSV diff table viewer in your browser with a live preview and one-click copy — free and private, generated locally in your browser with no upload and.
Open ToolCSV Filter
Free CSV filter that keeps rows matching a column condition. Choose equals, contains, greater than, or less than and export filtered CSV locally.
Open ToolCSV Row & Column Counter
Free CSV counter: count rows, columns, cells, and empty cells in CSV data, computed locally in your browser.
Open ToolCSV Splitter
Free CSV splitter that divides pasted rows into smaller chunks by row count. Keep headers on every part and copy each output in your browser.
Open ToolCSV To HTML Card Grid
Build CSV to HTML card grid in your browser with a live preview and one-click copy — free and private, generated locally in your browser with no upload and no.
Open ToolCSV to JSON Converter
Convert CSV rows into formatted JSON objects locally.
Open ToolCSV to SQL INSERT
Free CSV to SQL INSERT generator that turns pasted rows into escaped insert statements. Choose table name and create browser-only SQL output.
Open ToolCSV to TSV Converter
Free CSV to TSV converter: turn comma-separated values into tab-separated values, computed in your browser.
Open Toolcu yard to cu meter Converter
Free cu yard to cu meter converter with exact volume math, reverse conversion, copy-ready output, and a quick reference table in your browser.
Open ToolCube Volume Calculator
Free cube volume calculator: find the volume, surface area, and diagonal of a cube from its side, in your browser.
Open ToolCubic Bezier Generator
Free cubic-bezier generator: build CSS easing curves with a live animated preview, in your browser.
Open Toolcubit to centimeter Converter
Free cubit to centimeter converter with exact length math, reverse conversion, copy-ready output, and a quick reference table in your browser.
Open ToolcURL to Fetch Converter
Free cURL to Fetch converter that safely tokenizes shell quotes and maps methods, headers, request bodies, URLs, and Basic auth in your browser.
Open ToolcURL to Python Requests
Free cURL to Python Requests converter that safely tokenizes shell syntax and maps methods, headers, bodies, Basic auth, and URLs in your browser.
Open ToolCursive Generator
Free cursive generator: turn plain text into flowing Unicode cursive letters you can copy and paste anywhere, from bios to captions, in your browser.
Open ToolCustomer Acquisition Cost Calculator
Free customer acquisition cost calculator that divides sales and marketing spend by new customers and shows CAC targets. Runs locally in your browser for...
Open ToolCustomer Retention Count Calculator
Calculate retained and lost customers from a starting count and a loss rate. Everything is calculated locally in your browser, with no uploads or sign-ups.
Open ToolData Size Converter
Free data size converter that converts values instantly in your browser. Includes examples, formulas, limits, copy-ready output, and local privacy.
Open ToolDate Extractor
Free date extractor finds ISO and month-first numeric dates in prose and lists them in source order. Runs in your browser; no uploads or accounts are used.
Open ToolDay of the Week Calculator
Free day of the week calculator: find what weekday any date falls on, plus its day of the year, computed locally in your browser.
Open ToolDay of Week Finder
Free day of week finder that calculates dates and times locally in your browser with specific examples, limits, and copy-ready output. No account required.
Open Toolday to week Converter
Free day to week converter with exact factors, reverse conversion, copy-ready output, and a quick reference table that runs in your browser.
Open ToolDays Since Date Calculator
Free days since a date calculator: count the days, weeks, and months from a past date to today, in your browser.
Open ToolDays Until Date Calculator
Free days until a date calculator: count the whole days from today to any future or past date, computed locally in your browser.
Open ToolDebt-to-Income Calculator
Free debt-to-income calculator: divide your monthly debt payments by gross income to get the DTI ratio lenders use, in your browser.
Open ToolDecimal to Fraction Converter
Free decimal to fraction converter: turn any decimal into its simplest fraction and mixed number, in your browser.
Open ToolDegrees & Radians Converter
Free degrees to radians converter: switch between degrees and radians both ways, with multiples of pi, in your browser.
Open ToolDerangement Calculator
Free derangement calculator that counts permutations with no fixed positions using an exact recurrence for n from zero through 18 in your browser.
Open ToolDiff Two Files Line
Free line diff tool for comparing two pasted files. See added, removed, and changed lines locally in your browser.
Open ToolDifference of Proportions CI
Free difference of proportions confidence interval calculator from two success counts and sample sizes with selected confidence in your browser.
Open ToolDilution Calculator (C1V1=C2V2)
Free dilution calculator: solve C1V1 = C2V2 for the missing value when diluting a solution, in your browser.
Open ToolDiscriminant Calculator
Free discriminant calculator with labeled inputs and an immediate result. It classifies quadratic roots from coefficients privately in your browser.
Open ToolDividend Yield Calculator
Free dividend yield calculator: find a stock’s yield from its annual dividend and share price, in your browser.
Open ToolDNS Zone Record Builder
Free DNS zone record builder that validates owner, TTL, class, record type, address, priority, and quoted TXT values with clear syntax in your browser.
Open ToolDocker Compose Snippet
Build docker compose snippet in your browser with a live preview and one-click copy — free and private, generated locally in your browser with no upload and.
Open ToolDollar Cost Averaging Calculator
Calculate shares accumulated, average cost, and ending value from recurring buys and ending price. It runs locally in your browser with no uploads.
Open ToolDouble Discount Calculator
Free double discount calculator: apply two stacked discounts and see the true final price, in your browser.
Open ToolDrywall Sheet Calculator
Estimate drywall sheet count from wall area, sheet size, and waste percentage with local math. It runs entirely in your browser, with no uploads or accounts.
Open ToolDue Date Calculator
Free pregnancy due date calculator using Naegele’s rule from your last period, with current week and trimester, computed in your browser.
Open ToolDuplicate Line Remover
Remove duplicate lines while preserving the first occurrence.
Open ToolEgg Size Substitution Calculator
Convert recipe eggs between large egg equivalents and grams for baking adjustments. It runs entirely in your browser — no uploads or accounts.
Open Toolelectronvolt to joule Converter
Free electronvolt to joule converter with exact energy math, reverse conversion, copy-ready output, and a quick reference table in your browser.
Open ToolEmergency Fund Calculator
Free emergency fund calculator that estimates savings targets from monthly expenses and desired months of coverage. Runs locally in your browser for private...
Open ToolEngine Displacement Calculator
Free engine displacement calculator with an immediate result. It calculates total piston displacement from geometry privately in your browser.
Open ToolEnglish Stopword Remover
Free English stopword remover deletes a transparent built-in list of common function words. Runs in your browser; no uploads or accounts are used.
Open ToolEnvironment Variable Formatter
Convert environment variable lists into .env, shell export, Docker Compose, and JSON formats with duplicate key warnings.
Open ToolExpansion MRR Calculator
Calculate expansion MRR and the grown MRR from upsells and upgrades. Everything is calculated locally in your browser, with no uploads or sign-ups.
Open ToolExtract Emails From Text
Free email extractor: pull all email addresses out of any text, de-duplicated and listed, computed in your browser.
Open ToolExtract Numbers From Text
Free number extractor: pull all numbers out of any text, with count and sum, computed locally in your browser.
Open ToolExtract URLs From Text
Free URL extractor: pull all links out of any text, de-duplicated and listed, computed locally in your browser.
Open ToolFake Data Generator
Generate clearly synthetic names, example.com emails, placeholder addresses, and reserved 555 phone numbers from a seed in your browser without uploads.
Open Toolfathom to foot Converter
Free fathom to foot converter with exact factors, reverse conversion, copy-ready output, and a quick reference table that runs in your browser.
Open ToolFathoms to Meters Converter
Convert international fathoms to meters and meters to fathoms using the exact six-foot definition, with precise results calculated in your browser.
Open ToolFinal Grade Calculator
Free final grade calculator: find the score you need on the final exam to reach your target grade, in your browser.
Open ToolFive Number Summary Calculator
Free five number summary calculator: find the minimum, quartiles, median, and maximum of a data set, in your browser.
Open ToolFixed-Width to CSV
Free fixed-width to CSV converter that slices pasted text by column widths or ranges. Turn legacy exports into clean comma-separated data locally.
Open ToolFlashcard Review Rate Calculator
Calculate cards per minute and seconds per card from cards and minutes. Everything is calculated locally in your browser, with no uploads or sign-ups.
Open ToolFlatten JSON
Free flatten JSON tool: turn nested JSON objects and arrays into flat dot-notation keys, computed locally in your browser.
Open ToolFluid Typography Calculator
Free fluid typography calculator: generate a responsive CSS clamp() for font size across viewports, in your browser.
Open ToolFNV-1a 32-bit Hash Generator
Calculate a lowercase FNV-1a 32-bit hash from UTF-8 text using the standard offset basis and prime, with local output in your browser safely now.
Open Toolfoot to yard Converter
Free foot to yard converter with exact factors, reverse conversion, copy-ready output, and a quick reference table that runs in your browser.
Open Toolfoot/second to meter/second Converter
Free foot/second to meter/second converter with exact speed math, reverse conversion, copy-ready output, and a quick reference table in your browser.
Open ToolFour Percent Rule Withdrawal
Calculate first-year withdrawal and monthly income from a portfolio using a manual withdrawal rate. It runs locally in your browser with no uploads.
Open ToolFree Fall Calculator
Free free fall calculator with labeled inputs and an immediate result. It estimates ideal fall speed and distance from time privately in your browser.
Open ToolFreelance Day Rate Calculator
Free freelance day rate calculator that runs locally in your browser.
Open ToolFrontmatter Parser Preview
Preview frontmatter parser in your browser with a live preview and one-click copy — free and private, generated locally in your browser with no upload and no.
Open ToolFuel Economy Converter
Free fuel economy converter that converts values instantly in your browser. Includes examples, formulas, limits, copy-ready output, and local privacy.
Open ToolFullwidth Text Converter
Free fullwidth text converter: turn normal text into wide ａｅｓｔｈｅｔｉｃ fullwidth characters that paste anywhere, in your browser.
Open ToolFunnel Drop-off Visualizer
Free funnel drop-off visualizer that calculates step-by-step conversion, loss, and retained users from stage counts. Runs locally in your browser for...
Open ToolGeometric Distribution Calculator
Free geometric distribution calculator with an immediate result. It calculates first-success probability and cumulative chance privately in your browser.
Open Toolgibibyte to mebibyte Converter
Free gibibyte to mebibyte converter with exact data math, reverse conversion, copy-ready output, and a quick reference table in your browser.
Open ToolGithub Actions Workflow
Work with github actions workflow in your browser with a live preview and one-click copy — free and private, generated locally in your browser with no upload.
Open ToolGoogle Ads Character Counter
Free Google Ads character counter for responsive search ad headlines and descriptions, with limit warnings. Runs locally in browser.
Open ToolGoogle Business Profile Description Writer
Draft a Google Business Profile description from your business type, location, services, audience, and differentiators. Browser-only.
Open ToolGoogle Business Profile Post Generator
Draft Google Business Profile posts for offers, updates, events, and service highlights.
Open ToolGradient Image Generator
Free gradient image generator: create a linear gradient image between two colours, downloadable as PNG, in your browser.
Open ToolGradient Palette Extractor
Free gradient palette extractor that samples evenly spaced colors from two endpoints and returns CSS-ready swatches.
Open Toolgrain to gram Converter
Free grain to gram converter with exact factors, reverse conversion, copy-ready output, and a quick reference table that runs in your browser.
Open ToolGrams to Ounces Converter
Convert grams to ounces and ounces to grams using the international avoirdupois ounce, with six-significant-figure results privately in your browser.
Open ToolGross to Net Estimator
Free gross to net estimator that subtracts manual tax, benefit, and deduction rates from gross pay. Runs locally in your browser for private planning.
Open ToolHamming Distance Calculator
Free Hamming distance calculator: count the differing positions between two equal-length strings, computed in your browser.
Open ToolHappy Number Checker
Free happy number checker that repeats squared-digit sums, displays the path, and detects either one or a repeating cycle entirely in your browser.
Open ToolHAR to cURL Converter
Free HAR to cURL converter that parses request entries and emits method, URL, headers, and body data with safe shell quoting in your browser.
Open ToolHash Generator
Free SHA hash generator for SHA-256, SHA-384, and SHA-512. Hash pasted text locally with the browser SubtleCrypto API.
Open ToolHaversine Distance Calculator
Free haversine distance calculator: find the great-circle distance between two latitude and longitude points, in your browser.
Open ToolHeading Structure Checker
Paste HTML and inspect the H1-H6 outline, skipped levels, and duplicate H1s.
Open ToolHeat Conduction Rate Calculator
Free heat conduction rate calculator with an immediate result. It estimates steady one-dimensional conductive heat flow privately in your browser.
Open ToolHELOC Interest Only Payment
Calculate a HELOC interest-only monthly payment from balance and variable APR entered manually. It runs entirely in your browser, with no uploads or accounts.
Open ToolHex & Text Converter
Free hex to text converter: turn text into hexadecimal bytes and decode hex back to text, computed in your browser.
Open ToolHex Text Converter
Free hex to text and text to hex converter with spacing options. Convert Unicode-safe snippets locally in your browser.
Open ToolHourly Rate Calculator
Free hourly rate calculator that runs locally in your browser.
Open ToolHtaccess Cache Rule
Build Apache .htaccess cache-control snippets for assets and HTML documents. A static site can cache images for a year while leaving HTML shorter-lived.
Open ToolHTML Aria Label Auditor
Audit HTML ARIA label in your browser with a live preview and one-click copy. Free and private: everything is generated locally in your browser with no upload.
Open ToolHTML Email Preheader
Build HTML email preheader in your browser with a live preview and one-click copy — free and private, generated locally in your browser with no upload and no.
Open ToolHTML Picture Element
Work with HTML picture element in your browser with a live preview and one-click copy — free and private, generated locally in your browser with no upload and.
Open ToolHTML to JSX Converter
Free HTML to JSX converter that safely parses markup and securely rewrites attributes, inline styles, comments, void tags, and text in your browser.
Open ToolHttp Request
Build HTTP request in your browser with a live preview and one-click copy. Free and private: everything is generated locally in your browser with no upload.
Open ToolHTTP Status Code Explainer
Look up common HTTP status codes and what they usually mean.
Open ToolHypergeometric Distribution
Free hypergeometric distribution calculator for exactly k successes when sampling without replacement from a finite population in your browser.
Open ToolIdeal Weight Calculator
Free ideal body weight calculator using the Devine and Robinson formulas from your height and sex, computed locally in your browser.
Open ToolIEEE-754 Float Inspector
Free IEEE-754 inspector: enter a decimal number to see its 32-bit and 64-bit floating-point sign, exponent, mantissa bits, and hex, in your browser.
Open ToolImage Channel Swapper
Free image channel swapper. It swaps the red and blue channels of a local image and downloads a PNG and keeps entered data private in your browser.
Open ToolImage Color Picker
Free image color picker for sampling exact pixel colors from an uploaded image, with click-to-sample RGB and hex output generated locally in browser.
Open ToolImage Duotone Filter
Use this free image duotone filter in your browser to map local luminance between chosen shadow and highlight colors. Output stays private and local.
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