Useful tools,
all in one place.
Developer workflow, data and API, encoding, security, automation, and cloud-native utilities — mostly browser-local.
Recent and saved tools
Developer workflow
Compare, test, inspect, and generate everyday development data.
Text & File Diff Checker
Compare pasted text or two local text-based files line by line, with optional whitespace and case-insensitive matching. Files never leave your browser.
Runs locally ↗DeveloperText Batch Processor, Deduplicator & Sorter
Clean and transform lists in bulk: trim, remove empty or duplicate lines, sort, reverse, number, and add prefixes or suffixes locally.
Runs locally ↗DeveloperWebSocket Online Tester
Connect to ws:// or wss:// endpoints directly from your browser, send text or JSON messages, and inspect timestamped events.
Runs locallyData & formats
Work with JSON, YAML, SQL, schemas, and structured documents.
HTML Minifier & Compressor
Minify HTML locally by removing regular comments and collapsing whitespace while preserving sensitive raw-text blocks and important comments.
Runs locally ↗DataJSONL / NDJSON Viewer & Filter
Inspect newline-delimited JSON logs, filter records by text or field, find malformed lines, and export valid records without losing numeric precision.
Runs locallyEncoding & conversion
Convert text, URLs, Base64, files, and portable values.
Base64 Encoder & Decoder — Text, Files & Base64URL
Encode or decode Base64 text and files online. Supports UTF-8, Base64URL, padding, line-by-line conversion, data URIs, preview, and download in your browser.
Runs locally ↗EncodingURL Encoder & Decoder
Encode URL components or decode percent-encoded text locally, with clear handling for spaces and Unicode.
Runs locallySecurity & certificates
Inspect JWTs, hashes, certificates, and cryptographic test material.