FontPlop vs Sign Mockup: Which Is Better in 2026?

FontPlop is a free, private font viewer and font tester that runs entirely in your browser. Drop a TTF, OTF, WOFF or WOFF2 file onto the page and you instantly see every glyph in the font, can type your own sample text at any size, and can check its OpenType features, supported languages and vertical metrics. The file is read locally in your browser and is never uploaded to a server, so you can safely inspect commercial, licensed or unreleased fonts without sharing them with anyone. There is nothing to install and no account to create. If you do not have a font at hand, you can try the tools with Inter, a popular variable font, in one click.

Beyond the core viewer, FontPlop collects a growing set of small, focused font tools in one place. The Webfont Generator turns a TTF or OTF file into WOFF2 and WOFF files and writes the matching @font-face CSS for you, which makes it easy to self-host fonts on a website. Compare Fonts overlays two typefaces so you can compare their metrics side by side and get fallback CSS that reduces layout shift while web fonts load. The OpenType Features guide explains every feature tag, with the CSS you need and a live preview. The Kerning Game lets you space letters by eye and then reveals how the original type designer did it, which is a fun way to train your eye for typography.

For people who are not checking a font file, FontPlop also offers generators: a font generator that renders text in real fonts as PNG images, and dozens of copy-and-paste text styles such as cursive, bold and small text for social media bios and posts. There are also converters for common font formats.

FontPlop is built for designers, front-end developers, type enthusiasts and anyone who downloads fonts and wants to know what is inside them before using them. It is made by a small bootstrapped team and is completely free to use.

What problem it solves

Designers and developers need to inspect font files (glyphs, OpenType features, metrics) without installing software or uploading licensed fonts to a server.

Alternatives & competitors

FontDrop, Wakamai Fondue

Sign Mockup is an AI sign design assistant for sign shops. Drop in a site photo and the client's logo or business name; in about two minutes it erases the old sign, designs four buildable concepts with different constructions (halo-lit channel letters, LED neon, painted panels, gilded lettering and more), shows lit signs at day and dusk, and checks its own proofs before you see them - spelling, old sign removed, building unchanged, fits the fascia. Refine any design in plain words, send the client a no-login approval link with signature, then export a vector pack (SVG, DXF, PDF elevation) plus a spec sheet with colours, materials and lighting. 3 free credits, no card; paid plans from $49/month.