All tools
Browse 113 tools across 11 categories, from photo editing and cooking measures to calculations and text cleanup. Use the category links below, or press ⌘K or Ctrl+K to search by name or task.
Some links open different views of the same workspace. For example, the PDF workspace covers merging, splitting, rotation and page organisation. Use its task controls to switch jobs with the same open files. Each tool page explains its supported inputs and output limits.
Text
Count words, tidy lists and compare drafts
Word & character counter Live word, character, sentence and paragraph counts. Case converter Change text to upper, lower, title, camelCase or snake_case. Remove duplicate lines Strip repeated lines from a list, keeping the first of each. Sort lines Sort a list A–Z, by length, naturally, or shuffle it. Find & replace Replace text or regex matches, with a live match count. Diff checker Compare two drafts and highlight added or removed lines. Reverse text Flip characters, word order, or the order of lines. URL slug generator Turn titles into clean URL slugs. Handles accents. Lorem ipsum generator Generate placeholder text as plain text or HTML. Remove line breaks Join broken lines back into flowing paragraphs. Remove extra spaces Collapse double spaces, trim lines, drop blank lines. Extract from text Pull emails, links, numbers or your own pattern out of text. Word frequency Count word and phrase frequency, with stop-word filtering.
Developer
Format data, inspect tokens and generate IDs
JSON formatter & validator Format or minify JSON, check its syntax and sort keys. Base64 encode & decode Encode or decode Base64, including URL-safe variants. URL encode & decode Percent-encode or decode URLs, and inspect the parts. HTML entity encode & decode Escape HTML special characters, or decode entities back. JSON ↔ CSV converter Convert between JSON arrays and CSV, both directions. CSV import doctor Find CSV import problems, review cell changes and download a checked copy. UUID generator Generate random v4 or time-ordered v7 UUIDs in bulk. Hash generator Calculate MD5, SHA and CRC32 values for text. Color converter Get HEX, RGB, HSL and HSV values, plus text contrast ratios. JWT decoder Read JWT claims and expiry; signatures are not verified. Regex tester Test a regular expression with live match highlighting. Cron expression generator Explain a cron expression and see its next run times. QR code generator Make QR codes for links, Wi-Fi, email or contacts. JSON ↔ YAML ↔ XML Convert between JSON, YAML and XML in any direction. Password generator Generate random passwords with your chosen length and characters. Unix timestamp converter Epoch to date and back, with the unit auto-detected.
Money
Bills, loan payments, savings and returns
Currency converter Convert currencies using daily reference rates. Tip calculator Tip amount, total, and what each person pays. Split the bill Divide a bill evenly, tip included. Discount calculator Find a sale price, an original price or a combined discount. Compound interest Growth with regular contributions, year by year. Savings goal Estimate time to a savings goal or the monthly amount needed. Hourly to salary Compare gross pay per hour, day, week, month or year. Markup vs margin Markup and margin from cost and price. Break-even calculator Units and revenue needed to cover your costs. VAT calculator (EU) Add or remove VAT using an EU country preset or a rate you enter. Loan calculator (+ extra payments) Estimate monthly loan payments and the effect of paying extra. ROI & CAGR calculator Return on investment and annualized growth (CAGR).
Math
Percentages, fractions, units and grades
Fraction calculator Add, subtract, multiply or divide fractions and simplify. Ratio calculator Simplify a ratio, see shares, and solve a : b = c : x. Average calculator Find the mean, median, mode and spread of a list of numbers. Number base converter Convert between binary, octal, decimal, hex and base 36. Roman numeral converter Numbers to Roman numerals and back, with validation. GCD & LCM calculator Greatest common divisor and lowest common multiple. Quadratic equation solver Solve ax² + bx + c = 0, including complex roots. Scientific notation converter Convert to scientific and engineering notation. Percentage calculator Work out percentage changes, shares, increases and discounts. Unit converter Length, mass, volume, temperature conversions. Grade & final exam calculator Work out your grade, or the exam score you need to hit a target.
Time
Count days, add up hours and compare time zones
Age calculator Exact age in years, months and days, plus next birthday. Date countdown Count down to a date and time entered in UTC. Time zone converter Compare current times and dates across several time zones. Add days to date Add or subtract days, weeks, months or years. Duration calculator Find the gap between two dates and times, in days, hours or minutes. Week number ISO and US week numbers for any date. Timesheet calculator Add up worked hours with breaks and overnight shifts. Days between dates Count days and optional business days between two dates.
Images
Resize photos, blur faces and edit screenshots
Image cropper Crop a picture by dragging, using a preset or entering percentages. Image compressor Adjust image format, quality and dimensions to reduce file size. Image format converter Convert, resize, crop and compress images in one workspace. Rotate & flip image Turn pictures in 90-degree steps or make a mirror image. Favicon generator Make six square icon sizes from one image. Image to Base64 Convert an image to a data URI, with CSS and HTML snippets. Color picker from image Sample a colour from a picture and copy its HEX value. QR code reader Read a QR code and inspect its contents before opening a link. EXIF metadata viewer Inspect photo metadata and save a copy with it removed. Video to GIF Turn a short clip into a GIF, right in your browser. GIF frame extractor Extract frames from an animated GIF as PNG or JPG images. HEIC to JPG Convert iPhone HEIC photos to JPG locally, in batches. Image resizer Resize by width, height, percentage or a bounding box. Image redaction & censor Black out, pixelate or blur parts of an image. Nothing is uploaded. Chat screenshot cleaner Hide repeated names, contact details and avatars, then join chat screenshots. Face blur Detect faces and apply blur, pixelation or blocks; review before saving.
Files
Arrange PDFs, add signatures and convert subtitles
Protect PDF Save a password-protected PDF using AES-128 encryption. Crop PDF Trim margins by dragging, or type exact measurements. PDF watermark Add a text watermark while keeping an existing text layer. PDF page numbers Number every page — pick corner, format and start. Signature maker Draw with mouse or finger; download a transparent PNG. Sign a PDF Draw a signature and place it exactly where it belongs. PDF to JPG Export PDF pages as JPG or PNG, up to 300 DPI. Compress PDF Try reducing PDF size by turning pages into images; text is flattened. Unlock PDF Use a known password to save an image-based PDF without a prompt. PDF to text Extract an existing PDF text layer; scanned pages need OCR elsewhere. Organize PDF Reorder, delete, rotate and extract pages in one pass. JPG to PDF Combine images into a single PDF, in your order. Subtitle converter Read SRT, VTT, SBV or ASS/SSA; save SRT, VTT, SBV or plain text. Subtitle sync fixer Shift every timestamp, or fix frame-rate drift. Subtitle to text Turn a subtitle file into a plain transcript. File size converter Convert file sizes and estimate download time. Merge PDF Combine PDFs and arrange their pages in one workspace. Split PDF Extract selected pages or split a PDF into separate files. Rotate PDF Turn selected PDF pages upright, preview and save. PDF metadata viewer See the hidden author, dates and XMP in a PDF, then remove them.
Health
Adult body estimates and running pace
BMI calculator Calculate BMI and compare it with adult screening bands. TDEE & BMR calculator Estimate adult resting energy use and daily calorie needs. Running pace calculator Pace per km and mile, speed, and predicted race times. Ideal weight calculator Devine, Robinson, Miller and Hamwi, side by side. Water intake calculator A rough water-intake estimate from weight, activity and heat.
Food
Cooking measures, recipe portions and baking tins
Random
Roll dice, flip coins and pick from a list
Creative
Pixel art, ASCII, dithering and palettes
Image to pixel art Turn a photo into pixel art with retro palettes and dithering. ASCII art generator Make a text banner or turn a picture into character art. Colour palette from image Pull a colour palette out of a picture, with HEX, RGB and HSL. Dither & halftone Floyd–Steinberg, Atkinson, Bayer dithering and halftone screens. Sprite sheet cutter Slice a sprite sheet into frames, preview the animation and export.
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