Text & Code
Count, compare and share text or code snippets.
Character Counter +
Count characters, words, sentences, paragraphs, and more in your text.
No storageLorem Ipsum Generator
Generate placeholder text as paragraphs, sentences, words or list items, in plain text, HTML or markdown.
No storageRookiPaste Bin
Create temporary text and code pastes with optional browser-side password encryption.
Server storageText Comparator
Compare differences in two pieces of texts. Easily spot changes, additions, or deletions.
No storageDeveloper Utilities
Convert, inspect and generate the formats you work with every day.
Crontab Explainer & Generator
Read any cron expression in plain English, see its next run times, and build one from labelled fields.
No storageData Format Converter
Convert between CSV, JSON, XML, YAML, TOML and PHP arrays in any direction, in your browser.
No storageRegex Tester & Playground
Test regular expressions live with highlighted matches, capture groups, replacement preview and a plain-English breakdown.
No storageTimestamp Converter
Convert Unix timestamps, ISO 8601, RFC 2822, HTTP and SQL dates with full timezone support.
No storageUUID Generator
Generate UUID v1, v3, v4, v5, v6 and v7 in your browser, and decode any UUID you already have.
No storageWhat Is My IP
See your public IP address, answered by this site's own server rather than a third-party API.
No storageImage
Convert and process images without an upload.
Barcode Generator
Generate EAN, UPC, CODE128, ITF, Codabar and more as sharp PNG or SVG, entirely in your browser.
No storageImage Converter
Convert images of one format to another.
No storageImage Crop
Crop an image to any size or aspect ratio in your browser, at full original resolution.
No storageImage Flip & Mirror
Flip, mirror and rotate an image in quarter turns, in your browser, at full resolution.
No storageImage Resize
Resize images in your browser with proper Lanczos resampling, by dimensions, percentage or fit.
No storageQR Code Generator
Generate QR codes for links, Wi-Fi networks, contacts and more, entirely in your browser.
No storageAudio & Music
Convert audio and generate tones right inside your browser.
Audio Converter
Convert audio of one format to another.
No storageHarmonics Calculator
List the harmonics of any frequency with period, wavelength, radio band and musical note.
No storageTone Generator
Generate a precise tone at any frequency, with waveforms, sweeps, note names and per-channel output.
No storageCreative
Sketch, draw and visualise your ideas.
Security & Encoding
Hash, generate and encode — all in your browser.
Base64 Converter
Encode or decode base64 for text, images and files without leaving your browser.
No storageBcrypt Hash Generator & Verifier
Generate and verify bcrypt hashes in your browser. Your plaintext is never sent to a server.
No storageJWT Encoder & Decoder
Decode, verify and sign JSON Web Tokens in your browser, with claims and expiry explained.
No storageP2P Filetransfer
Send files of any size directly from your browser to someone else's, with no upload to any server.
Server storagePassword Generator
Generate strong random passwords or memorable diceware passphrases in your browser, with real entropy math.
No storageCalculators
Quick answers to the numbers you keep looking up.
Health & Fitness
Body metrics and lifting numbers, worked out in your browser.
BMI Calculator
Calculate BMI in metric or imperial units, with the categories and the limitations explained.
No storageGrecian Ideal Calculator
Calculate classical bodybuilding proportions from your frame using the McCallum and Steve Reeves formulas.
No storageOne Rep Max Calculator
Estimate your one rep max from any set using seven formulas, and get the training percentage table.
No storage