Free online web utilities

Paste service that keeps the text in the URL fragment, so no database or server storage is needed.

Previews an icon inside maskable-icon safe zones and exports a PWA-ready version.

A toolbox of 152 free browser-based tools, available in 17 languages with no signup.

Turns pasted JavaScript into a draggable bookmarklet link.

Turns a pasted userscript into an install link and previews its metadata.

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.

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.

Tests whether a microphone is picking up sound.

Decodes QR codes using your webcam.

Checks that a webcam works, useful on school Chromebooks.

Scans QR codes with a camera or an image file, and says it works in the browser.

Builds QR codes for links, WiFi logins, contacts or SMS, with color and error-correction choices and PNG or SVG download.

Builds Discord timestamp markup that displays in each reader's local time.

Breaks a URL into parts you can edit, then rebuilds it.