JSON Formatter
Format, validate, and minify JSON with clear error messages and one-click copy support.
Use tool →Fast • Static • Low Resource
Useful developer tools that run directly in your browser
ActSeek Dev Tools provides lightweight utilities for formatting JSON, encoding text, generating UUIDs, and handling everyday debugging tasks without heavy frameworks or server-side processing.
Included Tools
- JSON Formatter & Validator
- Base64 Encode / Decode
- URL Encode / Decode
- UUID v4 Generator
- JWT Decoder
- Unix Timestamp Converter
- Hash Generator
- Text Case Converter
Base64 Tool
Encode plain text to Base64 or decode Base64 back to readable text in your browser.
Use tool →URL Encode / Decode
Quickly escape query parameters or decode encoded strings for debugging and integration work.
Use tool →UUID Generator
Generate one or multiple UUID v4 values for development, testing, and internal tools.
Use tool →JWT Decoder
Decode JWT header and payload locally in your browser for quick token inspection.
Use tool →Unix Timestamp Converter
Convert timestamps into readable dates or generate timestamps from date input.
Use tool →Hash Generator
Generate SHA-256 hashes directly in your browser for quick verification tasks.
Use tool →Text Case Converter
Convert text into upper, lower, title, snake, or kebab case formats.
Use tool →Why this site is lightweight
Everything here is delivered as static HTML, CSS, and JavaScript. No database, no heavy frontend framework, and no server-side rendering required.
Good for everyday utility use
These tools are designed for small but common tasks: validating API payloads, converting text, checking encoding, and generating IDs.
Privacy-friendly by design
Most operations run entirely in your browser. Your input is not submitted to a remote processing service.