Developer tools. Fast and private.
Formats, validates and minifies JSON in real time, with clear syntax-error diagnostics.
Formats, validates and minifies XML in real time, with clear syntax-error diagnostics.
Formats and minifies SQL queries across 20 dialects, with configurable indentation and keyword case.
Converts CSV to JSON and JSON to CSV, with flexible delimiters and nested data.
Encodes and decodes Base64 in real time — accepts text and images, both directions.
Encodes and decodes values for use in URLs — query parameters and path segments.
Encodes and decodes HTML's reserved characters (& < > " ') to display text safely.
Decodes a JSON Web Token's header and payload, presenting every claim in readable form.
Generates and signs a JSON Web Token with the claims, algorithm and key you define.
Computes MD5, SHA-1, SHA-2, SHA-3 and BLAKE for any text — all at once, in real time.
Generates strong random passwords, with fine composition control and an entropy meter.
Share passwords and secrets through a self-destructing link — unreadable even to the server.
Encrypts and decrypts text or files in your browser using a passphrase you choose.
Generates v4 and v7 UUIDs (RFC 9562), one at a time or in batches, ready to copy.
Generates Lorem Ipsum text in words, sentences or paragraphs, ready to copy.
Generates and validates CPF/CNPJ, Brazil's tax ID documents, including the new alphanumeric CNPJ.
Fill in the details, draw the signature, and download the receipt as a PDF.
Generate typed QR codes for links, Wi-Fi, Pix, contacts and more — all in your browser.
Converts numbers between binary, octal, decimal, hexadecimal and any base from 2 to 36.
Converts a color between HEX, RGB, HSL and HSV at once, with live preview and a screen eyedropper.
Converts a value between length, mass, temperature, volume, area, speed and digital storage.
Converts between Unix timestamps (epoch) and readable date/time, both ways, in real time.
Calculates date differences or adds/subtracts time — business days, ISO week and more.
Explains a cron expression in plain English and calculates the next run times.
Converts identifiers between camelCase, PascalCase, snake_case, kebab-case and CONSTANT_CASE.
Share code, logs, or configs via an expiring link, with optional encryption (server can't read it).
Look up a domain's DNS records — A, AAAA, CNAME, MX, NS, TXT, SOA and CAA.
Look up a domain's registration data — registrar, dates, nameservers and status — via RDAP.
Inspect a domain's TLS certificate — validity, issuer, subject/SANs and protocol version.
Fetches a URL and evaluates the response's security headers — CSP, HSTS, X-Frame-Options and more.
Paste the JSON an API should return and get a real URL to test your frontend against.
Extracts and decodes URL parameters — paste the whole URL or just the query string.
Builds and encodes a query string from editable key/value pairs.
Look up registration, routing, cloud, reverse DNS and approximate location data for an IP.
Calculates network, mask and hosts for an IPv4/IPv6 block, plus VLSM and route aggregation.
Explains any HTTP status code — originating RFC, common causes, and related codes.
Explains any HTTP header — category, originating specification, and related headers.