About FlowToolkit
Founded May 2026. 15+ free, client-side tools.
FlowToolkit is a privacy-first collection of free, browser-based tools for developers, marketers, content creators, and everyday users. Every utility ships as a statically rendered page and runs entirely on your device — no signup, no upload, no tracking of your file content or form inputs.
Quick facts
| Founded | May 2026 |
| Pricing | Free, no paid tier |
| Account required | No |
| Server-side processing | None |
| Tools available | 15+ live |
| Languages | English |
Mission
Replace common SaaS micro-tools — CSV splitters, JSON formatters, image resizers, sitemap generators — with static, client-side equivalents. Files stay on your machine. The web platform is powerful enough to handle these tasks locally; FlowToolkit removes the unnecessary server round-trip.
How it works
- You open a tool page.
- You provide input via file drop, paste, or form fields.
- The tool runs the operation locally in your browser.
- You copy, download, or share the output. Nothing is uploaded.
Privacy
FlowToolkit operates no application server that processes user data. Tool inputs — files, text, form fields — never leave the browser tab. The only persistent storage used is one localStorage key (flowtoolkit-theme) for the light/dark mode preference. Anonymous pageview counts are collected via Google Analytics; no input data is captured.
Why browser-only?
Many of these tasks — splitting a CSV, formatting JSON, resizing an image — don't need a backend. Running them locally is faster (no upload round-trip), more private (data never leaves your device), and removes any dependency on third-party infrastructure or uptime.
Feedback
Have a tool you wish existed, or found a bug? Use the contact link in the site footer.