Data Engineering & Developer Utilities
Transform, validate, and inspect developer payloads directly in your browser. From pretty-printing nested JSON and decoding JWT authorization tokens to generating cryptographically random UUIDs and translating Unix timestamps.
Available Data & Developer Tools (12)
View All 38 ToolsBase64 Encoder & Decoder
Encode plain text or binary data into Base64 format, or decode Base64 strings back to text directly in your browser.
JSON Formatter & Validator
Format, beautify, minify, and validate JSON payloads with accurate syntax error highlighting and tree structure viewing.
URL Encoder & Decoder
Safely encode special characters for query parameters or decode percent-encoded URLs back to human-readable strings.
Cryptographic Hash Generator
Generate secure cryptographic message digests and checksums for strings and passwords using native Web Crypto APIs.
Unix Timestamp Converter
Convert Unix epoch timestamps (seconds and milliseconds) to UTC and local human-readable calendar dates, or vice versa.
Color Code Converter (HEX, RGB, HSL)
Convert color formats between HEX, RGB, RGBA, and HSL with live visual swatch preview and CSS snippet generators.
JWT Token Inspector & Decoder
Decode and inspect JSON Web Tokens (JWT) headers, claims, issued timestamps, and expiration status with 100% client-side privacy.
UUID / GUID v4 Batch Generator
Generate cryptographically secure random Universally Unique Identifiers (UUID v4 / GUID) individually or in bulk with custom formats.
PDF Table & Text Extractor to Excel
Parse structured text and tables from PDF documents and export directly to clean Excel (.xlsx) or CSV spreadsheets.
In-Browser SQL Query Studio
Run lightning-fast analytical SQL queries directly against CSV, Parquet, Excel, and JSON files inside browser RAM with zero server uploads.
Spreadsheet & File Diff Checker
Compare two CSV or Excel spreadsheets side by side. Visually inspect added rows, deleted records, and changed cell values in color.
Client-Side Data Cleaner & PII Anonymizer
Mask customer emails, phone numbers, credit cards, and SSNs in CSV and Excel spreadsheets before sharing or training AI models. 100% private.
Frequently Asked Questions About DATA & DEVELOPER TOOLS to OVERVIEW Conversion
Everything you need to know about formats, privacy, and browser-based file conversion.
Are API keys or JWT tokens safe to paste into these tools?
Yes. All parsing, validation, hashing, and encoding happen strictly in client-side JavaScript. No tokens, secrets, or payloads are transmitted to any server.
Does the JSON formatter support large files?
Yes, the formatter runs in browser memory and comfortably parses multi-megabyte payloads without network timeouts or upload bandwidth bottlenecks.
What standards do the hash and UUID generators adhere to?
UUIDs are generated using the Web Crypto API compliant with RFC 4122 v4 standards, while hash functions leverage native browser crypto implementations (SHA-256, SHA-512, MD5).
Explore Other Tool Suites
Discover all 38 client-side utilities across developer and everyday productivity suites.