Slidy is a one-purpose web tool for turning two images into a polished before/after comparison video — the kind interior designers, makeup artists, photo editors, and renovation accounts post on Instagram and TikTok. Drag in your before/after pair, pick a slider style (line, fade, double, logo overlay), tweak rounding/padding/shadow, and export in seconds.

Pricing is a $17 one-time payment (currently down from $37) with explicit "no monthly fees" framing. The whole product is a single, focused editor — no account-and-platform bloat — built for creators who want short comparison clips that perform better than static slideshows.