Free online web utilities

DoHabit is a lightweight, local-first habit tracker designed to respect your privacy.

Shows EXIF and file metadata for photos and PDFs and says it reads them in the browser.

Views, edits and strips EXIF data from images, with files kept local per the page.

Turns a PNG into a favicon.ico and the standard set of app icon sizes in the browser.

Form that drafts an accessibility statement for a website; the page says entries are not stored outside the browser.

Creates a QR code that lets guests join a Wi-Fi network; the page describes it as pure JavaScript.

Creates a consistent set of shadow levels tinted to a background color.

Styles QR codes with colours, logos and frames, and exports JPG, PNG, SVG or PDF.

IPv4 subnet and CIDR calculator with address class and wildcard mask output.

Builds a fluid type scale that grows with viewport width and outputs CSS clamp values.

Splits and joins IPv4 networks on a colour-coded visual grid.

Tests whether a web server supports Brotli compression.

Fetches a URL from the server side and shows its HTTP response headers, like a remote curl.

Checks whether a URL is served over HTTP/2.

Finds the country, city and network details tied to an IP or domain name.

Times the delivery of one asset from multiple locations around the world.

Looks up a domain's MX records and runs related DNS and mail checks.

Free eligibility check for legal aid in England and Wales, based on your legal problem, income and savings.

Breaks a URI into scheme, host, path, query and fragment.

Splits a user-agent string into browser, engine, OS and device.

Converts characters to HTML entities, in named, numeric or hex form.

Free scan that audits a site for WCAG and ADA issues.

Suggests alternative email address ideas from a name.

Playground of ready-made CSS animations you can tune and export.