Plugins · · 4 min read

Developer Tools desktop widgets

The Kepo Developer Tools plugin turns small developer checks into desktop widgets so JSON, JWTs, regex tests, hashes, timestamps, cron schedules, colors, diffs, and UUIDs stay one glance away.

Kepo Developer Tools JSON Formatter desktop widget preview
Developer Tools keeps common coding utilities available as focused desktop widgets.

A lot of development work is interrupted by small checks.

You format a JSON response, decode a token, test a regular expression, convert a timestamp, preview a cron schedule, or generate a UUID before returning to the real task.

Developer Tools puts those utilities into Kepo widgets so the checks stay close without turning into another collection of browser tabs.

Developer Tools is for repeated local utility work: inspect a value, copy the result, and return to the code or terminal.
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Developer Tools is for repeated local utility work: inspect a value, copy the result, and return to the code or terminal.

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Key solutions at a glance The main decisions from this guide, condensed into one table.
I want to...
Solution
Use one desktop surface for small developer checks
The plugin includes ten focused widgets instead of one crowded toolbox.
Format JSON and inspect JWTs without reopening web tools
JSON Formatter handles formatting, minifying, validation, and key sorting for structured payloads you are already copying between services.
Test regex, generate hashes, encode values, and compare snippets
Regex Tester lets you try an expression against sample text and inspect matches and captures without leaving the desktop panel.
Convert timestamps, preview cron runs, colors, and UUIDs
Timestamp Converter switches between Unix timestamps, milliseconds, local date-time input, and ISO output for logs and API values.
Copy results from the output panel
Every result panel includes a small copy control in the output area, so formatted JSON, decoded values, generated hashes, converted dates, cron runs, and UUIDs can move back into your code, terminal, notes, or API client quickly.

Use one desktop surface for small developer checks

The plugin includes ten focused widgets instead of one crowded toolbox. Each widget is sized around the work it performs, so text-heavy tools get more room while quick converters stay compact.

This makes it easier to keep only the utilities you actually use on the panel: a JSON formatter during API debugging, a timestamp converter while reading logs, or a UUID generator when creating test data.

Kepo JSON Formatter widget with split input and output panels
JSON Formatter uses a split layout so input and formatted output remain visible together.

Format JSON and inspect JWTs without reopening web tools

JSON Formatter handles formatting, minifying, validation, and key sorting for structured payloads you are already copying between services.

JWT Inspector decodes headers and payloads, shows expiry information, and can verify HS256 signatures when you need to inspect a token during development.

Kepo JWT Inspector widget preview
JWT Inspector is designed for larger layouts because token headers, payloads, expiry details, and signatures need room.

Test regex, generate hashes, encode values, and compare snippets

Regex Tester lets you try an expression against sample text and inspect matches and captures without leaving the desktop panel.

Hash Generator, Encoder / Decoder, and Text Diff cover the other small text tasks that often appear while debugging APIs, writing docs, or preparing test fixtures.

Kepo Regex Tester widget showing pattern input, flags, sample text, and match output
Regex Tester keeps pattern, sample text, and match output in one large widget.

Convert timestamps, preview cron runs, colors, and UUIDs

Timestamp Converter switches between Unix timestamps, milliseconds, local date-time input, and ISO output for logs and API values.

Cron Parser previews upcoming run times, Color Converter translates hex colors into RGB and HSL, and UUID Generator creates fresh v4 values for local development work.

Kepo Timestamp Converter widget preview
Timestamp Converter supports compact and wide layouts for quick log and API checks.
Kepo Cron Parser widget preview
Cron Parser previews upcoming scheduled runs without opening a separate cron tool.

Copy results from the output panel

Every result panel includes a small copy control in the output area, so formatted JSON, decoded values, generated hashes, converted dates, cron runs, and UUIDs can move back into your code, terminal, notes, or API client quickly.

Inputs and selectable output areas are marked for Kepo panel behavior, which keeps text editing and copying separate from widget dragging.

Developer Tools desktop widgets FAQ

Can I use Developer Tools as desktop widgets for coding utilities?

Yes. Developer Tools gives Kepo users separate desktop widgets for JSON formatting, JWT inspection, regex testing, hashes, encoding, text diffing, timestamps, cron parsing, colors, and UUID generation.

Does the Developer Tools plugin include a JSON formatter widget?

Yes. JSON Formatter can format, minify, validate, and sort JSON keys inside a Kepo widget.

Can I preview cron runs from the desktop?

Yes. Cron Parser validates a cron expression and shows upcoming run times in the widget.

Is this a replacement for an IDE or API client?

No. Developer Tools is for small repeated value checks. Use your IDE, terminal, API client, or original service when you need the full workflow.

Related Mac Desktop Widgets Resources

Explore more Mac desktop widgets and curated guides to run alongside this widget in Kepo:

Developer Tools does not replace an IDE, API client, or full debugging workflow.

It removes the smaller context switches around values you already have in front of you.

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