Tools that just work.
Everything runs locally in your browser. No uploads, no signup, no popups.
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All tools
From PDF and image work to text utilities and everyday calculators.
Word Counter — count words, characters & reading timeCount words, characters, sentences and reading time — in text or TXT/PDF/DOCX files.Unit Converter — length, weight, temperature & moreConvert length, mass, volume, area, speed, data and temperature.Currency Converter — live ECB exchange ratesConvert 30+ currencies with daily ECB reference rates.Loan Calculator — monthly payment & amortizationMonthly payment & schedule for annuity, balloon and interest-only loans — with down payment.Gross-to-Net Salary Calculator — Germany & AustriaEstimate net salary after tax and social security (DE & AT).Text Analyzer — readability score & statisticsReadability score, reading level, sentence and word statistics.Lorem Ipsum Generator — placeholder text in secondsGenerate Lorem Ipsum placeholder text by paragraphs, sentences or words.File Converter — images, PDF, audio & video, in your browserConvert images, PDF, audio and video locally: PNG, JPG, WebP, HEIC, SVG, MP3, MP4 and more.QR Code Generator — custom design, logo & branding, PNG + SVGCreate custom QR codes with shapes, gradients, a logo and branding text. PNG & SVG.Password Generator — strong, random & localStrong random passwords with length, character classes and a strength meter.BMI Calculator — body mass index & healthy weightBody mass index, WHO category and healthy weight range — metric or imperial.Percentage Calculator — % of, change & morePercent of a value, what percent, percentage change and increase/decrease.Age Calculator — exact age in years, months & daysExact age in years/months/days, total weeks & days, next-birthday countdown.Date Difference Calculator — days between two datesDays, weeks and a years/months/days breakdown between any two dates.Working Days Calculator — business days between two datesMon–Fri business days between dates, optionally excluding German public holidays.Base64 Encode & Decode — local, UTF-8 safeEncode and decode Base64 (incl. URL-safe), UTF-8 correct, 100% in your browser.URL Encode & Decode — percent-encoding, localPercent-encode/decode URLs and query values (component or full URI), 100% local.Hash Generator — SHA-256, SHA-512 & more, localSHA-1/256/384/512 checksums of text via Web Crypto, all live, 100% in your browser.Case Converter — UPPERCASE, lowercase, Title Case & moreUPPERCASE, lowercase, Title Case, sentence case, camelCase, snake_case & more — local, language-aware.Text Diff — compare two texts, 100% localCompare two texts line by line with word highlights, side-by-side or inline — no upload.Sort Lines & Remove Duplicates — local list cleanupSort lines, remove duplicates and empty lines, trim, reverse — with live statistics, no upload.Slug Generator — clean URL slugs from any titleGenerate URL slugs with German umlaut mode (ä→ae), hyphen or underscore, live output — no upload.JSON Formatter & Validator — local, with error positionFormat, minify and validate JSON with exact error position, 100% in your browser.Unix Timestamp Converter — epoch to date and backTimestamp to date and back, seconds/ms auto-detected, all IANA time zones, live clock.UUID Generator — v4 and v7, single or bulkUUID v4 (random) and v7 (time-sortable) per RFC 9562, bulk up to 100, 100% in your browser.JWT Decoder — read tokens locally, signature NOT verifiedDecode JWT header, payload and claims locally. Signature shown but never verified.VAT Calculator — net, gross & VAT amountNet to gross, gross to net and VAT amount for DE, AT, CH or a custom rate.CSV to JSON and back — in your browserConvert CSV to JSON and JSON to CSV, with table preview and per-row error list.CSV to Excel and Excel to CSV — in your browserCSV to .xlsx and back, with fitted columns, bold header and protection against formula injection.Markdown to HTML and back — with a safe previewMarkdown to HTML and HTML to Markdown, with a live preview cleaned by DOMPurify.Subtitle converter: SRT to VTT and backSRT to VTT and back, with timing shift, encoding repair and a reading-speed check.Color Converter: HEX, RGB, HSL, OKLCHConvert between HEX, RGB, HSL, HSV, OKLCH, CMYK and CSS colour names, with harmonies and tints.Contrast Checker: WCAG AA & AAAWCAG contrast ratio with AA/AAA verdicts for normal text, large text and UI components.Random Picker — wheel, numbers & shuffleWheel of names, random numbers with or without repeats, and list shuffling.QR Code Scanner — from image or cameraDecode QR codes from an image or your camera, with content type detection.Rule of Three Calculator — with the working shownProportional and inverse rule of three with the full working, step by step.Calorie Calculator — daily needs after Mifflin-St JeorBasal and total daily energy after Mifflin-St Jeor, with goal and macro split.Compound Interest Calculator — with savings planCompound interest with regular deposits, a yearly table and inflation adjustment.Work Hours Calculator – hours, breaks and payTimesheet with breaks, overnight shifts, decimal hours, optional pay and CSV export.GPA Calculator — 4.0 scale, weighted by creditsWeighted GPA on the 4.0 scale, plus the grade needed for a target average.Number Base Converter – binary, octal, decimal, hexBinary, octal, decimal, hex and any base 2 to 36, exact via BigInt, with bit and two's complement view.Time Zone Converter – with meeting plannerConvert one time into many zones, with DST edge cases named and a meeting planner grid.Image to Text (OCR) — extract text from a pictureRead text out of screenshots, scans and photos — German and English, locally in your browser.Video Tools — compress, trim, mute & convert, all localCompress, trim, mute, rotate, resize & turn clips into GIFs — 100% in your browser, no upload.Audio Tools — convert, cut, merge & extract, all localConvert, cut, change volume, merge & extract audio from video — 100% in your browser, no upload.PDF Tools — merge, split, organize & more, all localMerge, split, organize, compress, sign & more — 100% in your browser, no upload.Unit Converters — pressure, temperature & more, all localPressure (bar↔psi), temperature (°C↔°F) and more — each with formula, table & X-to-Y pages.Image Tools — compress, resize, crop & more, all localCompress, resize, crop, round-crop & remove EXIF — 100% in your browser, no upload.