Developer tools that run in your browser.

Yes. Every hub, export format and tool is free with no account, no trial and no export limits. There is no premium tier to upgrade to.

No. Converters, formatters, hashers and the flag and icon exporters all run as JavaScript inside your tab, so your input never reaches a server.

The artwork comes from the MIT-licensed circle-flags project, so commercial use is allowed. Some countries regulate depictions of their own flag in branding, so check local rules for logo or packaging use.

Single SVG, PNG at 32–512px, CSS data URI, JSX component markup, plus bulk ZIP downloads and a combined SVG sprite for multi-flag exports.

Each entry links to its canonical source so you can read the code before installing. HatScripts indexes scripts and shows changelogs and version diffs rather than re-hosting modified copies.

Once a page has loaded, the tools on it keep working without a connection because the logic is already in your browser. Downloading new flag files still needs network access.

Use a plain SVG file reference for lists and pickers so the browser caches one copy per country. Inline the SVG only when you need to animate or recolour individual paths, and reach for a CSS data URI when the flag is decorative and lives in a pseudo-element.

Select the countries you want in the flags hub, then choose the bulk ZIP download for individual files or the combined SVG sprite when you would rather ship one request and reference each flag by id.

Flag detail pages render PNG at 32, 64, 128, 256 and 512 pixels, drawn from the same vector source, so every size stays crisp on high-density screens.

You need any userscript manager. Tampermonkey has the widest browser support, Violentmonkey is the open-source alternative, and both read the same metadata block, so scripts listed here work in either.

Every script has a detail page with a syntax-highlighted source preview, its metadata block, a changelog and a version diff, so you can see exactly what changed between releases before you install or update.

No. Favorites, install counts, activity timelines and read-post state live in your browser localStorage. Clearing site data resets them, and nothing syncs between devices.

Yes. Search text and selected tags are written to the URL in the userscripts hub, so copying the address bar sends someone the exact filtered result you are looking at.

Press Cmd+K on macOS or Ctrl+K elsewhere to open the command palette, which searches flags, userscripts, tools, cheat sheets and blog posts from one input.

Flag metadata is generated from an open country dataset covering ISO 3166-1 alpha-2 codes, regions and common alternative names, including subdivisions such as England, Scotland and Wales.

Yes. The userscripts hub publishes an RSS feed and a JSON feed of recent additions and version bumps, both linked from the footer, so a reader can track changes without visiting the site.