A little toybox of tools for developer data.

Format, convert, sanitize, and poke at your data. All in the browser, nothing uploaded, no accounts, no fuss.

🔍⌘K

START HERE. WORKFLOWS & FAVOURITES

Format, validate, and convert JSON to types or other formats

Convert formats, remove backgrounds, create compliant ID photos

Password Security

Password Security

Generate strong passwords, analyze strength, hash for storage

HAR Viewer & Sanitizer

View and sanitize HAR files for secure sharing

Base64 Encode/Decode

Encode and decode Base64 strings with UTF-8 support

Code Screenshot Generator

Turn code into beautiful screenshots with syntax themes and custom backgrounds

BROWSE ALL. TAP A DRAWER TO OPEN IT

Data5 tools+

JSON / YAML / TOML / CSV / XML / HTML / Markdown Diff Checker JSON Formatter + Tree Viewer + Graph Visualizer JSON to TypeScript & 8+ Languages Generator String Manipulation Tool — Transform & Encode

network-api5 tools+

HAR Viewer & Sanitizer HTTP Status Code Reference QR Code Generator Regex Tester URL Encoder & HTML Entity Encoder

Encoding6 tools+

Base64 Encode/Decode Hash Generator JWT Decoder JWT Generator Password Generator Random String / API Key Generator

Code9 tools+

SQL / CSS / HTML / JavaScript / TypeScript Code Screenshot Generator CSS Gradient Generator CSS Units Converter .gitignore Generator Lorem Ipsum Generator Markdown Preview Mermaid Diagram Editor SVG Viewer & Optimizer

time-ids4 tools+

Cron Expression Builder Timezone Converter Unix Timestamp Converter UUID Generator

Reference6 tools+

Color Converter + Palette Password Strength Analyzer Text Statistics Token Counter + LLM Cost Calculator Unit Converter WCAG Color Contrast Checker

Media4 tools+

Background Remover Color Palette from Image Image Format Converter Passport Photo Maker

🔒

Paste whatever you like. It stays on your machine. Every tool runs right here in the tab, so there's nothing to upload and nobody to sign up with.

© 2026 devbento.dev · built local-firstChangelog