CalculatorsEMI, SIP, GST, percentages and more — instant, accurate, free.ConvertersUnit and number-base converters for everyday engineering.FormattersBeautify, validate and transform text and code.GeneratorsUUIDs, passwords and other things you need on demand.CryptographyHashes and encodings, computed locally in your browser.Data & TransformConvert JSON, CSV, YAML, XML & TOML — and generate code from JSON.CSV ToolsConvert, clean, filter, analyze and transform CSV files — all in your browser.Encoding & DecodingBase64, Base32/58/62, Hex, Octal and Punycode encoders & decoders.Text ToolsCase conversion, counting, sorting, dedupe, reverse and more.ValidatorsValidate JSON, YAML, XML, CSV, TOML and more — with clear error messages.Repair ToolsFix broken JSON, CSV, XML, YAML and other malformed data.Diff & CompareCompare two texts, JSON, CSV, YAML, XML and more — highlight the differences.QR & BarcodesGenerate WiFi, vCard, URL and other QR codes, plus Data Matrix & Aztec barcodes.MinifiersShrink JSON, CSS, JavaScript, XML and SVG by removing whitespace.BeautifiersPretty-print and indent CSS, HTML and JavaScript.Security & TokensJWT, HMAC, key pairs, TOTP, PKCE, secure tokens and password tools.Developer UtilitiesCron, regex, timestamp, URL, JSONPath, XPath, escaping and more.Format ConvertersMarkdown⇄HTML, env/INI/properties⇄JSON, NDJSON, SVG data-URI and more.Image ToolsResize, crop, convert, compress, recolor and extract palettes — all in your browser.Sitemap & SEOValidate, split, merge, analyse and generate XML sitemaps — paste the XML, nothing is uploaded.
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14 free tools · runs in your browser

Generators

UUIDs, passwords and other things you need on demand.

UUID GeneratorUUID v1, v3, v4, v5, v6, v7 and v8 — one or in bulk.Password GeneratorStrong random passwords, with a real strength analysis.QR Code GeneratorTurn any text or URL into a downloadable QR code.Lorem Ipsum GeneratorPlaceholder paragraphs, sentences and words.Slug GeneratorURL-safe slugs from any title or phrase.Email Signature GeneratorBuild an HTML email signature with a live preview.UUID v1 GeneratorTime-based UUID v1 with a random node.UUID v3 GeneratorName-based UUID v3 (MD5) from a namespace + name.UUID v5 GeneratorName-based UUID v5 (SHA-1) from a namespace + name.UUID v7 GeneratorTime-ordered UUID v7 — great for database keys.Nil UUID GeneratorThe all-zeros nil UUID sentinel value.Short ID GeneratorULID, NanoID, KSUID, CUID2 and Snowflake.Passphrase GeneratorDiceware passphrases from the EFF wordlists.Random PIN GeneratorRandom PINs that avoid the patterns people pick.