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Format JSON, test regex patterns, generate UUIDs, hash data, and convert file formats — all browser-based with zero tracking.
“Online JSON formatters that log your API payloads”
“Regex testers that require signup to save patterns”
“Bouncing between 5 different sites for simple utilities”
“Tools that break with large input or slow down”
Problem
“Need to format or validate a JSON payload”
Solution
Format, validate, and minify JSON with syntax highlighting.
Try it freeProblem
“Testing a complex regex pattern”
Solution
Live regex testing with match highlighting and group capture.
Try it freeProblem
“Need to generate UUIDs for database records”
Solution
Generate v4 UUIDs in bulk — copy with one click.
Try it freeProblem
“Need to verify a file checksum”
Solution
Compute MD5, SHA-1, and SHA-256 hashes entirely client-side.
Try it freeBeautify, validate, and debug messy JSON data instantly. Color-coded syntax highlighting and real-time error detection for developers.
Master the "God Mode" of text search. Test and debug regular expressions with real-time highlighting and capture group breakdowns.
Generate standards-compliant UUIDs (v1, v4) for databases and APIs. Supports bulk generation up to 1000 IDs with hyphen and case controls.
Generate secure digital fingerprints for your data. Supports MD5, SHA-256, and SHA-512 for file verification and cryptographic security.
Instantly encode text or assets to Base64 and decode them back. Full UTF-8 support for safe data transmission and debugging.
Compare two versions of text to find every addition and removal. Professional-grade side-by-side comparison for code and prose.
Your code and data never leave your browser
No tracking, no analytics on your input
WebAssembly-powered for near-native speed
Works offline — perfect for air-gapped environments
Files stay on your device
Free forever, no hidden fees
No signup required
Works offline as a PWA
Formatting and validating API response JSON
Testing and debugging regex patterns
Generating UUIDs for database seeding
Hashing passwords or verifying file integrity
Encoding/decoding Base64 for data transfer
Comparing code or config file diffs
Yes. FileMint is 100% free with no daily limits, no file size caps, and no paid plan. All 40+ tools work unlimited.
No. Every operation runs locally in your browser using WebAssembly. Your files never leave your device — no data collection, no cloud storage.
No. FileMint requires no signup, no email, and no credit card. Just open a tool and start working.
Yes. FileMint is a Progressive Web App. After your first visit, you can install it and use all tools even without internet access.
Join thousands of developers who already use FileMint for everyday file tasks. No signup. No limits.
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