format

env file formatter json formatter sql formatter url formatter

convert

base64 encode/decode case converter color converter curl converter docx → html docx → markdown html ↔ markdownjson ↔ csv json → typescript json ↔ yaml unix timestamp

generate

hash generator qr code generator uuid generator

inspect

cron parser diff viewer http status codes json path explorer jwt decoder markdown preview mime type lookup regex tester user agent

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thedevbox v0.1•⌘K search•MIT License•star on github ↗27 tools27 tools available

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[thedevbox]

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tools that run in your browser, built by people who were tired of bad tooling.

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format

env file formatter

Clean up dotenv and env files while keeping values in your browser.

Format, minify, validate, and sort JSON without sending data away.

Make SQL queries easier to read, review, and share.

Parse, encode, decode, and normalize URLs with query parameters.

convert

base64 encode/decode

Encode plain text to Base64 or decode Base64 back to text.

Convert identifiers between camel, pascal, snake, kebab, and title case.

color converter

Convert CSS colors between hex, RGB, HSL, and related formats.

Turn curl commands into JavaScript fetch snippets.

Convert Word document content into HTML in the browser.

docx → markdown

Convert Word document text into Markdown.

html ↔ markdown

Convert between HTML and Markdown for docs and web content.

ipynb → pdfsoon

Export Jupyter notebooks to PDF when server conversion is ready.

Convert JSON arrays and CSV tables back and forth.

json → typescript

Generate TypeScript types from sample JSON.

Convert configuration data between JSON and YAML.

Convert Unix timestamps, epoch values, and readable dates.

generate

Generate message digests and checksums from text.

qr code generator

Create QR codes for URLs, text, and short payloads.

Generate random UUID v4 and GUID values locally.

inspect

Explain cron expressions and preview upcoming run times.

Compare two text snippets and inspect their differences.

http status codes

Look up HTTP status codes and their meanings.

json path explorer

Query JSON with path expressions and inspect matching output.

Decode JWT headers and payloads in the browser.

markdown preview

Render Markdown into a live preview.

mime type lookup

Look up MIME types, content types, and file extensions.

Test JavaScript regular expressions against sample text.

Parse user agent strings into browser and device details.