Fillo is an embedded form platform for building and managing forms directly inside web applications. It helps developers create onboarding, support, feedback, intake, file request, approval, and account management forms without developing separate form infrastructure from scratch.

Fillo provides form validation, file uploads, response management, metadata and account context, webhooks, external delivery, and version control. Forms render directly within an application's existing interface rather than through an iframe, allowing teams to use their own routes, components, CSS, and design system. The platform supports React, Vue, Svelte, Astro, and plain browser applications, with options for default, customized, or headless form components.

Uploaded files can be connected to storage services such as Google Drive, Box, Amazon S3, and Cloudflare R2. Fillo also preserves response context, supports multiple form versions while maintaining historical submissions, and integrates with coding agents to help generate and add forms to an existing product. It is designed for teams that need customizable embedded forms, structured data collection, file handling, and connected response workflows within their software.

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