Small tools for the thing you need right now.
Built for developers, usable by anyone. Every tool runs entirely in your browser — your code, text and files never leave this tab.
No uploads, no sign-up, no tracking. Press⌘Kanywhere to jump between tools.
Developers
Encode, decode, inspect and validate.
JSON FormatterFormat, minify and validate JSON with precise error positions.Base64 Encode & DecodeConvert text or any file to Base64 and back.URL Encode & DecodePercent-encode URLs and edit query parameters as a table.Regex TesterTest patterns with live match highlighting and capture groups.UUID GeneratorGenerate v4 and v7 UUIDs in bulk.Hash GeneratorSHA-1, SHA-256, SHA-384 and SHA-512 for text or files.JWT DecoderInspect a token's header, payload and expiry.Cron BuilderRead a cron expression in plain English and preview its next runs.Social Link InspectorBreak a YouTube, Instagram or Facebook link into its ID, canonical URL and embed code.
Text
Count, compare and transform writing.
Converters
Units, bases and time zones.
Calculators
Everyday maths, worked out.
Percentage CalculatorEvery common percentage question, answered live.Discount CalculatorSale price, savings and effective discount with optional tax.Loan & EMI CalculatorMonthly payment, total interest and a full amortization schedule.Date DifferenceTime between two dates, plus add or subtract a duration.
Generators
Make codes, IDs and assets.
Image
Resize, convert and clean up.
Video
Record, trim and compress.