Free online tools
Small, fast utilities for developers, designers, writers and teams. No sign-up, no limits, and nearly everything runs in your browser so your data stays with you.
DeveloperPage 2 of 2
Format, encode, test and generate the things you reach for every day.
DeveloperScreen Resolution CheckerSee your screen resolution, browser viewport, pixel ratio, colour depth, touch support and user agent, with a reference of common device sizes.
DeveloperSQL FormatterFormat and beautify SQL for MySQL, PostgreSQL, SQL Server, Oracle, SQLite, BigQuery and more. Set keyword case and indent, or minify safely in your browser.
DeveloperStatus Page MakerPublish a simple public status page with component statuses and incident updates that you post by hand. A private manage link, no monitoring, free.
DeveloperSVG Optimizer and ConverterMinify SVG code in your browser, see the size saved and a visual check, then convert it to PNG, JPG or WebP at any scale or copy it as a data URI.
DeveloperText Diff CheckerCompare two texts side by side or inline at line or word level, highlight additions and removals, and ignore whitespace or case, all in your browser.
DeveloperUnix Timestamp ConverterConvert Unix timestamps in seconds or milliseconds to readable dates in any time zone, and dates back to timestamps, with ISO 8601 and relative time.
DeveloperURL Encoder and DecoderPercent-encode and decode text or full URLs, with component and full-URL modes, plus a query-string parser and editor that rebuilds the link as you type.
DeveloperUUID and Random String GeneratorGenerate UUID v4 and v7 in bulk, format them your way, create random strings from hex, base62 or custom sets, and parse any UUID.
DeveloperWebhook Tester and InspectorGet a temporary URL that captures incoming webhooks and shows the method, headers, query and body live. Holds 100 requests for 48 hours. Free, no sign-up.
DeveloperWebsite Speed and SEO Audit CheckerCheck any public page for speed, size, titles, meta tags, headings, canonical, robots, sitemap and security headers, with a score and a fix for each issue.
DeveloperWebsite Tech Stack DetectorFind out what a website is built with: CMS, frameworks, analytics, CDN, hosting and ecommerce, detected from headers, HTML, scripts and the generator tag.
DeveloperYAML to JSON ConverterConvert YAML to JSON and JSON to YAML in your browser with clear error messages, multi-document support, custom indent and optional key sorting.