Make developer tools sexy again.

Developer tools, but sexy.

Thirty-five private tools for JSON, JWTs, certificates, text, code, and data. Everything runs locally in your browser. No uploads. Ever.

Open a tool Browse all 35

35 · Tools

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Local tools. No account.

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JSON Formatter & ValidatorFormat, validate, minify, inspect, and query JSON with precise syntax diagnostics.

FormatValidateMinifyTreeIndent: 2

InputValid JSON

1  {
2    "name": "DevSexy",
3    "private": true,
4    "tools": 35
5  }

ResultFormatted locally

1  {
2    "name": "DevSexy",
3    "private": true,
4    "tools": 35
5  }

Parse success⌘K Search⌥X Switch tool

35Tools

6Workflows

Local by default

Utility should still feel good.

Developer tools touch our work every day. They should be precise, fast, and invisible—not clumsy, noisy, or unsettling.

DevSexy is an editorial collection of tools designed for focus. Every interaction is built to get out of your way—so you can stay in the flow.

Local-first. Fast. No accounts.

Your input never leaves the workbench.

Tool execution happens in your browser. Your tool inputs are not sent through an upload or server-processing step.

Local tool processing. No account required. Your inputs stay in the workbench.

Private by design. Always.

6 · Workflows

Explore by category

Data & formats

Format, validate, query, minify, and diff structured data.

View tools 7

Security

Decode tokens, inspect certificates, and audit payloads.

View tools 3

Web engineering

Inspect URLs, headers, domains, markup, and requests.

View tools 12

Text

Test regex, compare text, count, wrap, and normalize.

View tools 3

Mobile

Convert app resources and inspect mobile build artifacts.

View tools 5

Systems

Convert time, identifiers, byte layouts, and schedules.

View tools 5

How it works (local-first by design)

1Input

Paste, type, or drop your data.

{ "name": "DevSexy" }

2Worker

Your browser runs the tool. Nothing leaves your device.

100%

3Result

Get instant results. Copy, save, or export.

{ "private": true }

FAQ

Is my data sent to any server?

No. Tool execution happens locally in your browser, and your input is never part of an upload step.

Do I need an account?

No account, sign-in, or setup is required. Open a tool and start working.

Is DevSexy really free?

Yes. All 35 browser tools are available without a paywall.

Can I use DevSexy offline?

Once a tool page and its assets are loaded, its processing path does not need a server.

How do you ensure tools are accurate?

Each tool uses explicit parsers or standards-aware libraries and is covered by repeatable catalog and workflow tests.

Find your tool. Get back to building.

Open a tool Browse all 35

Local by default
Private by design
Made for developers