The tools you reach for,
every single day.

Format and minify JSON instantly. Explore structure as an interactive collapsible tree with search. Entirely in your browser.

Parse, format, and validate XML documents. Explore structure as a collapsible tree with attribute highlighting.

Convert Unix timestamps, format dates across timezones, and look up common time intervals.

Decode and inspect JWT headers and payloads, verify HMAC signatures, and check expiration in real time.

Encode and decode Base64 strings and files. Supports URL-safe variant and binary data preview.

Encode and decode URL components, parse query strings, and build URLs from structured parameters.

Pomodoro-style focus timer with task tracking. Customize focus/break durations, track completed pomodoros, and manage your daily tasks.

Generate MD5, SHA-1, SHA-256, SHA-512, SHA-3, Keccak-256, RIPEMD-160 and more hashes, entirely in your browser.

Convert between YAML and JSON, validate YAML syntax, and view structure as a collapsible tree.

Test regular expressions against sample text with live match highlighting and group capture display.

Run jq filters on JSON data in your browser via WebAssembly. Slice, map, and transform JSON with the full jq language.

Convert line endings between Windows (CRLF), Linux/macOS (LF), and Classic Mac (CR). Upload any text file and download the result.

Validate JSON against a JSON Schema (Draft-06 through 2020-12), inspect inferred schemas, and explore JSON as an interactive tree.

Upload any image and hover to extract the exact RGB, HEX, and HSL color values at any pixel. Click to pin a color. Runs entirely in your browser.

Paste a base64-encoded image string and instantly preview it. Supports raw base64 and data URI format. PNG, JPEG, GIF, WebP, SVG, and more.

Resize and compress images in your browser. Pick output format (WebP, JPEG, PNG), set dimensions, and adjust quality. Nothing uploaded to any server.

Paste raw HTML, preview the rendered output, adjust A4 page margins, and download as PDF. Runs entirely in your browser.

Convert speech to text in real time using your microphone. Live transcript with interim results. Chrome only — runs entirely in your browser.

Convert Markdown to HTML instantly using marked with GFM support. Preview the rendered output or copy the raw HTML source. Runs entirely in your browser.

Convert any image file to a Base64 string instantly. Drag-and-drop or click to load. Output as raw base64 or ready-to-use HTML img tag. No upload, no tracking.

Generate X.509 (HTTPS/TLS) certificates and SSH key pairs entirely in your browser. Password-protected ZIP download — private keys never leave your device.

Paste a PEM certificate and instantly decode its subject, issuer, validity, serial number, fingerprints, SANs, and key usage. Runs entirely in your browser.