100% client-side · no servers · no tracking

84 free developer tools
that run in your browser

JSON, Base64, hashes, JWT, QR, PDF, DNS, regex, CSS generators, invoice maker, privacy policy generator, barcode generator and more — a clean, fast, private workbench. No signup, no servers, no tracking.

Categories

Everything a developer needs

Polished, focused tools for the daily grind. Pick a category to jump in.

Most Popular

Most loved tools

The dev community's go-to utilities — pinned for good reason.

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Client-side
Free
No paywalls
Designed for speed

Built different

Every keystroke is processed locally — no round-trips, no waiting, no surprises.

Instant by default

Live processing as you type. No buttons to click, no spinners, no waiting on a backend.

Privacy-first

Your data never leaves your device. Everything runs in your browser, even offline.

Keyboard-friendly

Cmd+K to search, fast tab order, full accessibility — the way devs actually work.

Works offline

Installable as a PWA so it shows up on your dock — and keeps working without WiFi.

Light & dark mode

Carefully tuned palettes for long sessions. We respect your system preference.

Zero clutter

No popups, no “sign up to continue.” Just clean tools that do one thing well.

Private by design. Encoder.guru runs entirely in your browser. Nothing you paste, type, or upload leaves your device — verify it yourself by opening the Network tab.