39 TOOLS · 7 GROUPS

Developer tools that don't upload your data.

Every tool runs locally. Use the same utilities you find online without pasting production data into someone else's server.

01

Converters

Timestamp Converter

Convert Unix timestamps and dates.

02

Converters

Number Base Converter

Convert numbers between bases.

03

Converters

Case Converter

Convert text between common cases.

04

Converters

Color Converter

Convert common color values locally.

05

Converters

Query String ⇄ JSON

Convert query strings into JSON.

06

Converters

.env ⇄ JSON

Convert environment text into JSON.

07

Converters

Cron Explainer

Explain cron schedules locally.

08

Text

Text Stats

Count words, lines, and characters.

09

Text

Slugify

Turn titles into URL-safe slugs.

10

Text

Line Tools

Edit lines of text with common operations.

11

Text

Regex Tester

Test patterns against sample text.

12

Text

Text Diff

Compare two text inputs locally.

13

Network

HTTP Client

Prepare HTTP requests without a cloud relay.

14

Network

WebSocket

Inspect a WebSocket endpoint from your browser.

15

Network

Server-Sent Events

Inspect server-sent event streams locally.

16

Network

Load Tester

Exercise endpoints with controlled local requests.

17

Network

gRPC Client

Draft and inspect gRPC requests locally.

18

Network

GraphQL Client

Draft GraphQL requests locally.

19

Encode / Decode

URL Encode / Decode

Safely encode or decode URL components.

20

Encode / Decode

Base64

Encode and decode Base64 text locally.

21

Encode / Decode

JWT Decoder

Inspect JWT headers and claims without uploading tokens.

22

Encode / Decode

HTML Entities

Encode and decode HTML entities locally.

23

Encode / Decode

JSON String Escape

Escape and unescape JSON strings locally.

24

Encode / Decode

Hex ⇄ Text

Convert text and hexadecimal values.

25

Encode / Decode

Unicode Escape

Encode and decode Unicode escape sequences.

26

Generators

UUID

Generate cryptographically strong UUIDs.

27

Generators

Random String

Generate random strings with browser entropy.

28

Generators

Lorem Ipsum

Generate placeholder copy locally.

29

Generators

Hash

Create a SHA-256 digest in your browser.

30

Generators

QR Code

Generate QR codes locally.

31

Formatters

JSON Formatter

Format and validate JSON locally.

32

Formatters

YAML ⇄ JSON

Convert YAML and JSON locally.

33

Formatters

SQL Formatter

Format SQL for readable local review.

34

Formatters

Markdown

Write and format Markdown locally.

35

Utilities

Calculator

Calculate expressions locally in your browser.

36

Utilities

Clock & Timer

Keep time and run timers locally.

37

Utilities

Calendar

Plan dates and inspect calendar views locally.

38

Utilities

Games

Take a break with quick games for developers.

39

Utilities

Tech News

Browse a focused feed of technology news.