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A small collection of focused utilities for everyday development tasks. Format JSON, validate syntax, generate CSS shadows, and encode Base64 — all running entirely in your browser. No sign-up required, and the data you paste into a tool is never uploaded to our servers.
Parse, beautify (RFC 7159 compliant), minify. Handles edge cases: circular references, BigInt, Unicode escapes.
Strict RFC 7159 & ECMA-404 validation. Reports byte-position errors, detects duplicate keys.
Generate Tailwind shadow classes (inset/outset). Exports raw CSS and computed values with browser vendor prefixes.
Encode/decode RFC 4648. Supports standard, URL-safe, and MIME variants with padding validation.
A few common scenarios where these tools fit naturally into a developer day.
When REST endpoints return minified JSON, identify structural errors within 200ms. Parse and visualize nested objects to find missing required fields before hitting database errors.
Generate production-ready CSS shadow values with browser-computed measurements. Extract Tailwind class names for immediate use in your component library.
Every tool operation (formatting, validation, encoding) executes locally in your browser. The JSON, text, or values you paste into a tool are not transmitted to our servers for processing.
Cache tools locally after first load. Continue formatting JSON, validating syntax, and encoding data without internet. Perfect for train commutes or offline environments.
Embed tools in development scripts to validate JSON fixtures, ensure consistent formatting, and catch encoding issues before deployment.
Because every operation runs in your browser, your input is not transmitted to a server. Useful when you would prefer not to paste tokens, internal IDs, or proprietary payloads into a remote service.
ProDevTools.xyz is not a startup trying to sell your data. We're a developer tool platform committed to transparency and utility.
Browser-based processing means zero network latency and instant results.
The data you paste into our tools is processed locally and never leaves your browser. We do not store tool inputs or outputs on our servers.
Built by developers for developers. Clean interfaces, powerful utilities.
No usage limits, no paywalls, and no rate limiting. Once a tool page has loaded, it continues to work even if your connection drops.
Each tool follows the same simple flow. Open the page, use the tool, get your result.
Choose from JSON, CSS, or encoding utilities. Each tool has a focused interface designed around a single task.
Drop in your JSON, text, or design values. Everything processes locally in your browser using standard Web APIs.
Copy the output to your clipboard or download it as a file. No account required, no data stored anywhere.
Long-form articles on JSON, CSS, encoding, and the craft of modern web development. Written for working engineers.
A comprehensive guide to formatting, structuring, and validating JSON for production web applications. Covers indentation, key ordering, schema validation, and common pitfalls.
Read articleWhy Base64 exists, how it works under the hood, when to use standard versus URL-safe variants, and how to avoid the most common encoding mistakes in production systems.
Read articleMaster CSS shadows from the basics to advanced layering techniques. Learn how offset, blur, spread, and inset interact, and how to create depth without sacrificing performance.
Read articlePick a tool and get started instantly. No sign-up required and your tool data stays in your browser.