About Konvertio
Free, fast, and privacy‑first developer tools — encoders, formatters, generators, and converters.
Our Mission
Konvertio was created with a simple goal: give developers access to essential everyday tools — without invasive tracking or unnecessary friction. Whether you’re encoding Base64, formatting JSON, validating JWT tokens, generating passwords, or converting YAML to JSON, we want the experience to be fast, private, and completely free.
Every tool runs entirely in your browser using standard Web APIs. Your inputs and results are never sent to a server, never stored in a database, and never shared with anyone. We use Google Analytics for anonymous aggregate traffic insights only — no personal data, no tool inputs, ever.
From JSON formatters and Base64 encoders to QR code generators, regex testers, diff checkers, and 130+ more — Konvertio covers the full range of tools developers reach for every day.
Why People Love Konvertio
Konvertio at a Glance
What’s Inside
Konvertio covers five categories of developer tools — all free, all browser-based:
- Encoders & Decoders — Base64, URL, HTML entities, JWT, AES encryption, GZIP, hashing (MD5/SHA), HMAC, and more.
- Formatters & Linters — JSON, SQL, XML, CSS, HTML, YAML, GraphQL formatters; regex tester; diff checker; JSON Schema validator.
- Generators — Password generator, UUID generator, QR code maker, API key generator, RSA & SSH key generators, OTP, lorem ipsum, and more.
- Converters — JSON↔YAML, CSV↔JSON, XML↔JSON, HTML to JSX, JSON to TypeScript, timestamp converter, color picker, and more.
- Text Tools — Word counter, HTTP status codes, IP subnet calculator, URL parser, cURL builder, case converter, emoji picker, and more.
Why Konvertio?
Most online developer tool sites are bloated with ads, riddled with trackers, and force you to create accounts for basic functionality. Konvertio takes a different approach:
- Clean interface — distraction-free, fast, and easy to use.
- No server-side data processing — your tool inputs never leave your browser.
- No account required — open a tool and start using it instantly.
- Mobile friendly — every tool works beautifully on any screen size.
- Dark & light mode — choose your preferred theme for comfortable use any time of day.