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Search 175 free browser tools. No upload, no signup.
Text15
Case ConverterConvert text between UPPERCASE, lowercase, Title Case, camelCase, snake_case and 6 more styles — live.Word CounterCount words, characters, sentences and reading time live as you type — CJK text handled correctly.Remove Duplicate LinesDelete repeated lines from lists and logs while keeping the original order — with case and trim options.Character CounterCount characters with and without spaces, plus words, sentences, paragraphs and lines as you type — perfect for tweets, titles and meta descriptions.Sentence CounterCount sentences instantly and see words, paragraphs and reading time next to them — a quick readability check for editors and writers.Remove Extra SpacesCollapse double spaces into one, convert tabs, trim line edges and remove empty lines — clean up pasted text in a single pass.Text SorterSort any list of lines alphabetically, backwards, by length or by number — locale-aware and instant, right in your browser.Text CleanerRemove invisible characters, smart quotes, extra spaces and empty lines from text pasted out of PDFs, Word processors and chat apps.Reverse TextFlip any text backwards character by character, or reverse the order of whole lines — Unicode-safe, instant and fully local.Lorem Ipsum GeneratorGenerate 1–50 paragraphs of classic lorem ipsum filler for mockups, wireframes and CMS testing — one click to regenerate and copy.Text DiffCompare two versions of a text word by word, with additions and deletions highlighted — no account, no upload, no size fuss.Slug GeneratorTurn any headline into a clean URL slug — lowercase, accent-free and hyphenated — ready for SEO-friendly links.Find and ReplaceFind and replace across thousands of words with case, whole-word and regex modes — see the match count before you commit.Fancy Text GeneratorTurn plain text into 12 Unicode styles — bold, italic, script, double-struck, circled, fullwidth and more — and copy any one with a single click.Emoji PickerBrowse 670+ common emoji in 8 curated groups, search by English name, click to copy instantly, and reuse your 16 most recent picks — all in your browser.
Utility61
Length ConverterConvert length and distance instantly: meters, feet, inches, miles, centimeters and more — right in your browser.Weight ConverterConvert kilograms, pounds, ounces, stones and grams instantly — free, private and works offline.Temperature ConverterCelsius to Fahrenheit and Kelvin, instantly. Live results plus freezing and boiling reference points.Data Size ConverterConvert bytes, KB, MB, GB and TB — both decimal (1000) and binary (1024) conventions, side by side.Speed Converterkm/h, mph, knots, m/s and more — convert running pace, wind speed and vehicle speed instantly.Volume ConverterLiters, gallons, cups, milliliters and cubic meters — US and UK units clearly labeled.Area ConverterSquare meters, square feet, acres, hectares and more — for real estate, land and flooring.Time Unit ConverterSeconds, minutes, hours, days, weeks, months and years — with the month/year caveat explained.Pressure Converterbar, psi, pascal, atmosphere, mmHg and more — for tires, diving, weather and HVAC.Energy ConverterCalories, kilojoules, joules, kWh, Wh and BTU — food labels, electricity bills and physics in one place.Currency ConverterConvert 160+ world currencies with fresh mid-market rates — loaded once online, calculated and cached privately in your browser.Time Zone ConverterCompare times across 21 major cities with live clocks and an hour-by-hour table — DST handled exactly, everything runs in your browser.Binary ConverterConvert between decimal, hexadecimal, octal and binary in one live grid — supports arbitrarily large integers, grouping for readability.Roman Numeral ConverterConvert numbers to Roman numerals and back, in both directions at once — with strict classical validation of subtractive notation.Age CalculatorWork out an exact age in years, months and days, total days lived, and a live countdown to the next birthday — calendar accurate.BMI CalculatorCalculate Body Mass Index from metric or imperial inputs and see exactly where the value lands in the official WHO weight categories.Percentage CalculatorThree percentage problems in one live tool: X% of Y, X is what percent of Y, and the percent change between two values.EMI CalculatorCompute the fixed monthly EMI for any loan — principal, rate and tenure in, total interest and total repayment out, instantly.Loan CalculatorSee the full picture of a loan: monthly payment, total interest and a year-by-year amortization table showing principal and interest splits.GST CalculatorAdd or extract GST at the 5%, 12%, 18% and 28% slab rates — net, tax and gross amounts computed live in your browser.VAT CalculatorAdd VAT to a net price or extract it from a gross price at any custom rate — net, VAT and gross amounts live, private and instant.Discount CalculatorPrice plus one or two stacked discounts in: final price, money saved and the true combined percentage — worked out as you type.Profit CalculatorCost and selling price in: profit or loss, profit margin and markup percentage out — the pricing numbers sellers mix up, sorted live.Scientific CalculatorA full scientific calculator in your browser: trig, log, ln, powers and roots with a live result — no eval, no server, no tracking.Date CalculatorDays between two dates in years, months and days — or add and subtract days from any date — with leap years handled exactly.QR Code GeneratorTurn any text or URL into a crisp QR code with adjustable size, colors and error-correction level — download as PNG or SVG.Barcode GeneratorCreate scannable CODE128, EAN-13 and UPC-A barcodes with adjustable bar width and height — vector SVG output, rendered in your browser.Color PickerPick a color from the swatch or grab one straight from your screen with the EyeDropper API — hex, RGB and HSL copied in one click.Color ConverterPaste a color in hex, rgb() or hsl() and get all three formats plus a ready-made row of tints and shades for your design system.Unix Timestamp ConverterConvert Unix seconds or milliseconds to human dates and back, with a live clock, local-timezone and UTC output — all in your browser.Tip CalculatorBill plus tip percentage plus split between friends: see the tip, the total and exactly what each person owes — live, no math at the table.Fuel Cost CalculatorDistance, efficiency and pump price in: fuel needed, trip cost and cost per kilometer or mile out — metric or imperial, with round trip.Aspect Ratio CalculatorGiven a ratio like 16:9 and one dimension, get the missing width or height instantly — plus presets from 1:1 to 21:9 for video and design.Compound Interest CalculatorSee how savings grow with compound interest — enter a deposit, monthly contributions and a rate to get the final balance and a year-by-year table.Random Name PickerPaste your list, spin the wheel and let a cryptographically random draw pick the winner — fair for classrooms, raffles and team stand-ups.QR Code ScannerDecode a QR code from any image or straight from your camera — read locally in your browser, with copy and open-as-link output and nothing uploaded.Mortgage CalculatorWork out the monthly payment on a home loan — P&I plus tax, insurance and HOA — with loan amount, total interest and a yearly amortization table.Salary to Hourly CalculatorConvert an annual salary into hourly, daily, weekly, biweekly and monthly pay — and see the adjusted hourly rate once unpaid days off are factored in.Hourly to Salary CalculatorTurn an hourly rate into daily, weekly, biweekly, monthly and annual pay at your real schedule — default 40 hours a week across 52 weeks.Break-Even CalculatorFind the units and revenue where a product stops losing money — fixed costs, price and variable cost in, contribution margin and profit table out.Pace CalculatorCompute running pace per km and per mile from any distance and time, then predict race times with Peter Riegel's 1.06 exponent formula.One Rep Max CalculatorEstimate your one-rep max from any weight-and-reps set with Epley and Brzycki formulas, plus a 1–12 rep training table with percentages of 1RM.Sleep CalculatorFind the best bedtime for a set wake-up time — or when to wake if you sleep now — using 90-minute sleep cycles plus 15 minutes to fall asleep.Business Days CalculatorCount business days between two dates or add and subtract workdays from any date — with your own weekend definition and a custom holiday list.Cooking Conversion CalculatorConvert cups, tablespoons and teaspoons to grams and ounces for 24 common ingredients, with an oven °F↔°C table — all averages, no server round-trips.BMR CalculatorCalculate your basal metabolic rate with the Mifflin-St Jeor equation (1990) — the calories your body burns at complete rest every day.Calorie CalculatorTurn your BMR into daily calorie targets: five activity levels (×1.2–1.9) plus lose, maintain or gain goals of about ±500 kcal a day.Body Fat CalculatorEstimate body fat percentage with the US Navy tape method (Hodgdon & Beckett, 1984) from height, neck and waist — hips for women.Ideal Weight CalculatorSee your ideal weight from the Devine formula (1975) and the healthy BMI band (18.5–24.9) for your height, shown in kg or pounds.Water Intake CalculatorGet a daily water target: 35 ml per kilogram of body weight plus about 350 ml for every 30 minutes of exercise, with hot-weather guidance.Overtime Pay CalculatorWork out overtime pay at 1.5× or 2× your hourly rate — regular pay, the overtime premium, your weekly total and an annualized figure from a salary.Rent Affordability CalculatorFind the maximum rent your monthly income can carry under the 30%, 33% or 40% rule — then see what remains after debts and renter insurance each month.APY CalculatorConvert a nominal APR into the effective APY — and back again — for daily, monthly, quarterly or annual compounding, with optional growth of a deposit over time.GPA CalculatorTurn this semester's courses into a GPA on the 4.0 scale with standard quality points, then blend your prior credits into one honest cumulative GPA.Heart Rate Zones CalculatorTurn max and resting heart rate into five training zones with the Karvonen method — warm-up, fat burn, aerobic, anaerobic and VO₂ max, in bpm.Shoe Size ConverterConvert shoe sizes between US, UK, EU and Japanese systems for men and women — anchored to foot length in centimeters.StopwatchA precise online stopwatch with lap times — start, pause, lap and reset, with drift-free timing anchored to the system clock.Countdown TimerSet a countdown with a progress ring and a chime at zero — 1 to 25 minute presets or any custom duration.Contrast CheckerCheck the WCAG contrast ratio between two colors with AA and AAA pass/fail for normal and large text, plus a live preview. Runs entirely in your browser.Grade CalculatorWeighted or points-based grade calculator: add assignments, see your current grade and letter, and find out exactly what to score on the final exam.CSS Gradient GeneratorBlend two to five colors into linear, radial or conic CSS gradients with a live preview, ready-to-paste code and one-click harmonized palettes.
PDF20
Merge PDFCombine multiple PDFs into one document right in your browser — reorder files freely, no uploads, no watermarks, no signup.Split PDFSplit a PDF into separate files by fixed page count or custom ranges — every output is generated locally and nothing is uploaded.Rotate PDFRotate PDF pages by 90, 180 or 270 degrees and save the change permanently — fix sideways scans in your browser, no upload.Delete PDF PagesRemove unwanted pages from a PDF in seconds — type the pages to drop, download the trimmed file, all processed inside your browser.Rearrange PDF PagesReorder PDF pages visually with live thumbnails — move pages up and down, reverse everything, and export a fresh PDF locally.Watermark PDFStamp text watermarks on every PDF page — centered or tiled, with full control of size, opacity, rotation and color, fully offline.Sign PDFDraw your signature with a mouse or finger and place it on any PDF page — a natural ink-style stamp created and saved fully offline.Compress PDFShrink heavy PDFs by rasterizing pages at your chosen DPI and JPEG quality — batch support and exact before/after sizes, all offline.JPG to PDFTurn JPG photos into a clean PDF in your browser — batch import, drag-free reordering, and A4, Letter or fit-to-image page sizes.PNG to PDFConvert PNG screenshots and images into one PDF without recompressing them — batch import, custom order, processed on your device.Image to PDFCombine images of any format — JPG, PNG, WebP, GIF and more — into a single PDF, with automatic conversion and zero uploads.PDF to JPGExport every PDF page as a JPG image at up to 300 DPI — single pages or a ZIP for many, converted right on your device.PDF to PNGConvert PDF pages to lossless PNG images at your chosen resolution — crisp slides and scans, with a ZIP when there are many pages.PDF to WordTurn PDF text into an editable Word document (.docx) in your browser — a text-focused conversion, free, with nothing uploaded.PDF to ExcelExtract the rows and columns of a PDF into an editable Excel spreadsheet (.xlsx) — row-by-row conversion in your browser, free.PDF to PowerPointConvert each PDF page into a PowerPoint slide as a high-resolution image — layout-perfect slides generated on your own device.Word to PDFConvert Word .docx documents to PDF in your browser — text-focused typesetting with headings and bold, nothing ever uploaded.PDF to TextPull plain text out of any PDF instantly — preview it, copy to clipboard or save as .txt, extracted page by page in your browser.OCR PDFRun OCR on scanned PDFs entirely in your browser — recognize English, Chinese, Japanese and more, then copy or save the text.Add Page Numbers to PDFStamp page numbers on a PDF — choose format, corner and starting number, all locally in your browser.
Image23
Image CompressorCompress JPG, PNG and WebP images with a live quality slider, batch processing and instant before/after sizes — all in your browser.Image ResizerResize images to exact pixels or a percentage with aspect-ratio lock, and process whole batches at once — nothing leaves your device.Crop ImageCrop photos to 1:1, 4:3, 16:9 or a free area with draggable handles and pixel-accurate offsets — fast, private and batch-ready.Rotate ImageRotate images by 90°, 180° or 270° and flip them horizontally or vertically — batch-friendly, instant and completely in your browser.Image ConverterConvert images between PNG, JPG and WebP with adjustable quality — drop a whole folder and download every result in one click.JPG to PNGConvert JPG photos to PNG instantly with lossless output and batch support — free, private and with no upload, right in your browser.PNG to JPGConvert PNG images to JPG and shrink file size dramatically — transparent areas get a clean white background and quality stays adjustable.WebP ConverterConvert images to WebP or turn WebP files back into JPG and PNG — pick the target format, tune the quality, batch-process in bulk.HEIC to JPGConvert iPhone HEIC photos to JPG or PNG so they open anywhere — batch conversion with quality control, all on your device.SVG to PNG ConverterTurn SVG icons and graphics into crisp PNG rasters at 1× to 4× or any custom scale — transparency preserved, perfect for app assets.Screenshot ToolCapture a single frame of your screen, crop it precisely and save it as a PNG — one authorized snapshot, nothing recorded or uploaded.Image Metadata ViewerInspect image dimensions, file type, size and EXIF details — camera, lens, exposure, date and GPS — without uploading anything.EXIF RemoverStrip EXIF, GPS and other hidden metadata from photos by re-encoding them locally — share images without leaking location or device.Watermark ImageAdd a text watermark to images — position, opacity, size or tile it, processed entirely in your browser.Merge ImagesCombine 2–9 images into one — side by side, stacked or as a grid, with gap and background control.Grayscale ImageConvert images to black & white in a batch — keep colors out of scans, prints and photo sets, all locally.Favicon GeneratorTurn any logo or image into a complete favicon set — 16 to 512 px PNGs with optional rounded corners, plus the HTML to paste. Runs in your browser.Image to Text (OCR)Extract text from photos, scans and screenshots in 7 languages — review, edit, copy or download as .txt. Recognition runs entirely in your browser.Round Image CornersGive one image or a whole batch rounded corners — transparent PNG corners or a solid color, live preview, output in PNG or JPG. Runs in your browser.Image BorderAdd a solid-color or transparent border around one image or a whole batch — live preview, PNG or JPG output, runs entirely in your browser.Split ImageSlice one image into an even rows × columns grid of PNG tiles — live grid preview, ZIP download, everything processed locally in your browser.Circle Crop ImageCrop one image or a whole batch into a centered circle with transparent corners — shrink slider, live preview, lossless PNG output, in your browser.Compress Image to SizeShrink images to an exact KB budget: a binary search over JPEG or WebP quality lands as close as the format allows — batch, offline, no upload.
Developer38
JSON FormatterFormat and beautify messy JSON online — 2 spaces, 4 spaces or tabs, with instant validation and precise error locations. 100% in your browser.JSON MinifierMinify JSON online: strip all whitespace to shrink payloads for faster API responses and smaller storage — see the exact bytes saved, privately in your browser.JSON ValidatorValidate JSON instantly with precise error line and column. Catch missing commas, unquoted keys, trailing commas and bad escapes before they break your app.XML FormatterBeautify XML online with clean 2-space indentation — sitemaps, RSS feeds, SOAP envelopes and config files become readable again, right in your browser.XML ValidatorCheck XML for well-formedness in real time: mismatched tags, broken attributes and invalid entities are reported the moment you paste. Nothing is uploaded.HTML FormatterTurn minified or one-line HTML into clean, indented markup — a simple, reliable beautifier for emails, templates and saved pages. 100% client-side.HTML MinifierMinify HTML in your browser: strip comments and collapse whitespace to cut page weight — a conservative cleaner that keeps your markup and rendering intact.CSS MinifierMinify CSS online: remove comments and needless spaces to cut stylesheet size for faster loads. Instant, private, and safe for your rules.JavaScript MinifierA conservative JavaScript minifier: strips comments and collapses blank lines, keeping line breaks — no risky rewrites, your code semantics stay untouched.SQL FormatterFormat SQL online with consistent keyword casing and indentation — turn long SELECTs, JOINs and stored procedures into readable code, right in your browser.Base64 EncoderEncode text to Base64 instantly with full UTF-8 support — emojis, accents and CJK characters survive intact. Free, private, nothing ever leaves your browser.Base64 DecoderDecode Base64 back into readable text with proper UTF-8 handling — data URIs, API payloads and encoded config values become clear instantly. Private and free.URL EncoderPercent-encode URLs and query strings online — choose component encoding or full URI encoding, with live output for links, parameters and path segments.URL DecoderDecode percent-encoded URLs back into readable text — %20, %2F and query-string values become clear instantly. Handles + as space, fully in your browser.JWT DecoderDecode JWT tokens online: inspect the header and payload claims with human-readable exp and iat timestamps. Decoding only — nothing is verified or uploaded.UUID GeneratorGenerate random UUID v4 identifiers in bulk with one click — 1 to 500 at a time, using your browser's cryptographic randomness. Free, instant, offline-capable.Hash GeneratorCompute SHA-1, SHA-256, SHA-384, SHA-512 or MD5 hashes of text or files, right in your browser. Fast checksums for integrity checks — nothing uploaded.MD5 GeneratorGenerate MD5 hashes of any text or file instantly in your browser — perfect for checksums, dedup keys and legacy integrations. One-way, never uploaded.SHA-256 GeneratorCalculate SHA-256 hashes of text or files online using native WebCrypto — the standard choice for integrity checks and fingerprints. 100% client-side.Regex TesterTest regular expressions live: highlight every match as you type, inspect capture groups and debug patterns for JavaScript, with common flags one click away.JSON to CSVConvert JSON arrays of objects to CSV with correct quoting and escaping — spreadsheet-ready for Excel, Sheets or database import. Fully in-browser.CSV to JSONConvert CSV to JSON with automatic type inference — numbers, booleans and nulls are detected, quoted fields handled. Paste, convert, copy. Nothing uploaded.CSV to ExcelConvert CSV to a real .xlsx spreadsheet in your browser — auto-detects comma, semicolon or tab delimiters, keeps quotes and line breaks intact.Excel to CSVTurn any .xlsx or .xls workbook into clean CSV — pick a sheet, choose the delimiter, and download. Quoting, commas and line breaks are escaped correctly.Markdown PreviewerPreview Markdown as clean, sanitized HTML while you type — headings, lists, tables, code and links rendered live. Perfect for READMEs, docs and comments.HTML Escape / UnescapeEscape or unescape HTML entities live as you type: & < > and quotes become safe references, with an optional numeric mode for non-ASCII characters.URL ParserPaste any URL and see it decomposed live: protocol, host, port, each path segment, decoded query parameters and hash — with copy as JSON.HTTP Status CodesA searchable reference of 56 HTTP status codes grouped by class, each explained in one plain sentence — click any row to copy the number.Base64 ImageConvert images to base64 data URLs and back — preview, validate and download, with an exact size comparison. Everything runs in your browser.HTML to MarkdownTurn HTML into clean Markdown while you type — headings, lists, links, images and code, with ATX or Setext headings and your pick of bullet marker.XML to JSONConvert XML to JSON in your browser — attributes become @-keys, repeated elements become arrays, and malformed input gets a friendly line-level error.JSON to XMLConvert JSON to well-formed XML with attributes, repeated elements and correct escaping — round-trips with our XML to JSON tool. All local, all instant.Placeholder Image GeneratorGenerate placeholder images of any size in SVG, PNG or JPG — pick colors and a label, preview instantly, then download the file or copy the SVG markup.Cron ExplainerTurn any cron expression into plain language: a field-by-field breakdown, the next five run times in your timezone, and one-click presets.JSON to TypeScriptGenerate TypeScript interfaces from any JSON — nested objects, arrays and unions, ready to paste into your project.JSON DiffCompare two JSON documents path by path — added, removed and changed keys with before/after values, all locally.JSON Path QueryExtract any value from JSON with a path like $.user.name or $.items[0].id — instant, forgiving, no jq syntax to learn.JSON ⇄ YAML ConverterConvert JSON to YAML and back — config-file ready, with a swap-to-continue workflow and precise error messages.
SEO10
Meta Tag GeneratorGenerate title, description, keywords, robots and viewport meta tags with live HTML output you can paste straight into your <head>.Open Graph GeneratorBuild the full set of og: and twitter: meta tags and watch the share card preview update live before you paste anything.Canonical Tag GeneratorGenerate a correct rel=canonical link tag and learn how to normalize URLs so search engines index the one version you want.Schema Markup GeneratorGenerate valid JSON-LD structured data for Organization, LocalBusiness, Product, Article, FAQPage and HowTo — escaped and ready to paste.robots.txt GeneratorBuild a robots.txt with AI crawler blocklists or allowlists, per-bot rules, crawl-delay and sitemap directives — then copy or download.XML Sitemap GeneratorPaste a URL list and get a valid sitemap.xml with lastmod, per-section changefreq and priority — deduplicated and ready to submit.SERP PreviewPreview your Google snippet on desktop and mobile with pixel-level truncation and length meters for the title and description.Keyword Density CheckerCount 1–3 word keyword phrases and their density, with built-in stopword lists for English, Chinese, Japanese, Spanish and Portuguese.hreflang GeneratorBuild a complete hreflang link cluster — one link per language plus x-default — from your translated URLs, consistent and bidirectional.UTM Link BuilderAdd utm_source, medium, campaign, term and content to any URL and get a correctly encoded tracking link you can copy or share.
Security8
Password GeneratorGenerate strong passwords and passphrases in your browser with live entropy estimates — crypto-grade randomness, nothing sent or stored.Password Strength CheckerSee how strong a password really is: zxcvbn scoring, realistic crack-time estimates and concrete fixes — all computed locally, never uploaded.Email ValidatorCheck an email's format locally and verify its domain can receive mail with a live MX lookup, plus typo detection — free, instant, no signup.DNS LookupLook up A, AAAA, MX, TXT, NS and CNAME records for any domain via DNS-over-HTTPS in a clean table — no terminal or dig commands needed.IP LookupFind any IP address's country, city, ISP and ASN in seconds — or check your own IP — with a free keyless API, right in your browser.WHOIS LookupCheck domain registration data via RDAP — registrar, creation and expiry dates, status codes and nameservers — with clear notes on TLD coverage.Random Number GeneratorGenerate truly random numbers from any range — singles, batches, unique lottery-style draws — using your browser's cryptographic RNG.TOTP GeneratorGenerate 2FA codes offline from any TOTP secret — RFC 6238, 6 or 8 digits, live 30-second countdown. Your secret never leaves the browser.