New
JSONL Validator — Validate Newline-Delimited JSON Files Free in Your Browser
Validate JSONL (JSON Lines) files line by line. Instant error reporting, no uploads, works offline. Perfect for AI training data and log file validation.
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Tag: developer tools
New
JWT Decoder — Decode and Inspect JWT Tokens Securely in Your Browser
Decode JWT tokens and inspect headers, payloads, and signatures without sending them to any server. Free, private, works offline.
New
Markdown Cleanup Tool — Clean and Fix Markdown Formatting in Your Browser
Clean up messy Markdown — fix spacing, normalise headings, remove trailing whitespace, and more. Runs entirely in your browser, no uploads, free to use.
New
Cron Expression Tester — Validate and Understand Cron Jobs in Your Browser
Test and validate cron expressions instantly. See the next run times, understand the schedule, and debug cron syntax — all in your browser with no data sent anywhere.
New
CSV to JSON Converter — Free, Instant, and Runs in Your Browser
Convert CSV files to JSON and JSON to CSV instantly in your browser. No uploads, no accounts — perfect for developers and data professionals who value privacy.
New
Free Hash Generator — MD5, SHA-1, SHA-256, SHA-512 in Your Browser
Generate MD5, SHA-1, SHA-256, and SHA-512 hashes instantly from text or files. All hashing runs locally in your browser — no uploads, completely private.