Fast, polished, browser-based utilities

Clean developer tools for quick fixes, debugging, and daily browser workflows.

DevToolHive brings together focused tools for formatting JSON, decoding Base64, and converting timestamps, along with search-friendly landing pages that help users reach the exact tool they searched for.

Open JSON formatterExplore all tools

> Validate and beautify JSON payloads

> Encode and decode Base64 on the fly

> Convert timestamps for UTC and local time

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3 Core tools live
15 Search-targeted landing pages
100% Browser-friendly experience
Fast Responsive on mobile

Featured tools

Base64 Encoder & Decoder

Convert plain text to Base64 and decode Base64 back to text directly in your browser.

JSON Formatter & Validator

Pretty-print, minify, and validate JSON with a cleaner editor-style experience.

Unix Timestamp Converter

Convert epoch seconds or milliseconds into UTC and local dates with timezone-aware output.

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Popular landing pages

These search-focused pages help visitors land directly on the right utility when they search for a specific term like JSON formatter, Base64 decoder, or epoch to date converter.

JSON Formatter Online

Format and validate JSON online with readable output and quick browser-based cleanup.

JSON Validator Online

Validate JSON online and catch malformed payloads before you ship or debug further.

JSON Prettify Tool

Prettify JSON online with clear indentation and color-coded output for easier reading.

JSON Beautifier

Beautify JSON strings online and turn compressed payloads into readable structured content.

Format JSON Online Free

Format JSON online for free with validation support and browser-based output.

Base64 Encoder Online

Encode plain text to Base64 online with instant browser-based conversion.

Base64 Decoder Online

Decode Base64 text online and convert encoded strings back to readable plain text.

Text to Base64 Converter

Convert text to Base64 online with a lightweight browser-based converter.

Decode Base64 to Text

Decode Base64 to text online and review the readable output immediately.

What makes the experience better

Fast in-browser tools

Useful utilities that work right away without sending your text to a server.

Clean developer UX

Dark, modern interfaces built to feel closer to tools developers already use daily.

Privacy-friendly workflow

Your formatting, encoding, and conversions stay on the client for common tasks.

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Helpful guides