DevPlay

PRO SUITE

10 essential client-side developer playground tools in one unified workspace

1-0Quick Switch
Client Sandbox Active

JSON Formatter & Schema Inspector

Beautify, validate, minify, sort keys, and inspect JSON structural statistics.

STATUSReady
SIZE0 B
KEYS0
MAX DEPTH0
INPUT RAW JSON0 chars
FORMATTED OUTPUT0 lines
// Formatted JSON will appear here...

Regex Tester & Visual Matcher

Real-time regular expression tester with capture groups breakdown and pattern presets.

Presets:
//
MATCHES FOUND0 matches
EXEC TIME0.0ms
Matches highlighted in neon cyan
TEST STRING
LIVE MATCH HIGHLIGHT
MATCH & GROUP DETAILS

Enter regex and test string above to inspect capture groups.

JSON Web Token (JWT) Inspector

Decode and inspect JWT headers, payload claims, expiration status, and structure.

STATUSWaiting for token
ALGORITHMNone
EXPIRATIONN/A
ENCODED TOKEN Header Payload Signature
HEADER: ALGORITHM & TOKEN TYPE
PAYLOAD: DATA & CLAIMS

CSS Glassmorphism & UI Generator

Interactive visual playground to tweak backdrop blur, transparency, border, and shadows.

Parameters

16px
20%
180%
20px
15%
32px
Glassmorphism UI
Realtime CSS preview

Modern frosted glass effect rendered using native CSS backdrop-filter, subtle translucent border, and ambient diffused shadows.

GENERATED CSS PROPERTIES
/* Generated CSS will show here */

JavaScript Live Sandbox & Runner

Interactive execution playground with console capture, execution timer, and preset algorithms.

Templates:
EXEC TIME0.00 ms
CONSOLE LOGS0 entries
JAVASCRIPT CODEES2024 / Web APIs
OUTPUT CONSOLEIdle
// Hit "Run Code" or press Ctrl+Enter to execute.

Encoder, Decoder & Cryptographic Hasher

Instant Base64, URL encoding, Hex conversion, and client-side SHA-256 / SHA-512 cryptographic hashing.

CURRENT MODEBase64
INPUT LENGTH0 chars
OUTPUT LENGTH0 chars
INPUT STRING
OUTPUT RESULT

Color & Contrast Studio

Color space conversions, WCAG 2.1 accessibility contrast validation, shades & harmony generator.

Presets:
Click to Pick
WCAG 2.1 CONTRAST & ACCESSIBILITY AUDITAA threshold: 4.5:1 (Normal) / 3.0:1 (Large) | AAA threshold: 7.0:1
On White Background (#FFFFFF)3.85:1
AA FAILAAA FAIL

DevPlay Typography Preview

Quick brown fox jumps over the lazy dog. 1234567890

On Dark Background (#090D16)5.82:1
AA PASSAAA FAIL

DevPlay Typography Preview

Quick brown fox jumps over the lazy dog. 1234567890

LIGHTNESS SHADES & TINTS (10% - 90%)Click any shade to inspect
COLOR HARMONIESComplementary, Triadic & Analogous

Code Diff & Text Comparator

Compare two snippets or files side-by-side with LCS line-diff, insertion/deletion highlights, and patch export.

ADDITIONS+0
DELETIONS-0
UNCHANGED0
ORIGINAL TEXT / CODE
MODIFIED TEXT / CODE
UNIFIED DIFF VISUALIZERRed: Deletions | Green: Additions

URL & Query Params Inspector

Parse, edit, and reconstruct URLs with interactive query parameter manipulation and request snippet generators.

Presets:
PROTOCOLhttps:
HOSTapi.storefront.dev
PORT443
PATHNAME/v2/catalog/search
HASH#results
QUERY PARAMETERS0 params
USEKEYVALUEDEL

Mock Data & Identifier Generator

Batch generator for UUID v4, NanoID, Unix timestamps, and procedural JSON / CSV mock entities.

UUID v4
NanoID (21 chars)
Timestamp (Unix / ISO)
5
5 Records0 B
GENERATED DATASET PREVIEWReady for local mock APIs, testing, and seeding
// Generating dataset...
Notification