JSON formatter & validator
Format, beautify, validate, and minify JSON online. Pinpoint syntax errors by line and column, sort keys, and copy or download the result.
Inspect STL, OBJ, and GLB geometry with orbit controls, bounds, wireframes, and clipping.
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Inspect STL, OBJ, and GLB geometry with orbit controls, bounds, wireframes, and clipping.
Use the sample to explore the controls, or open your own files. Processing takes place on this device. Download your result before closing the tab. Supported formats and practical limits are shown in the workspace.
3D model viewer and measurement tool is a free online tool on ReallyUseful.Tools. No account is required.
3D model viewer and measurement tool is designed to run in your browser where supported, so files can stay on your device instead of being uploaded to a server.
Format, beautify, validate, and minify JSON online. Pinpoint syntax errors by line and column, sort keys, and copy or download the result.
Encode text to Base64 or decode Base64 back to text with full UTF-8 support and an optional URL-safe alphabet.
Convert Unix epoch timestamps to human-readable dates and back. Supports seconds and milliseconds, local time, UTC, and ISO 8601.
Generate MD5, SHA-1, SHA-256, SHA-512, SHA3, and CRC32 hashes for text or files. Verify checksums and create HMACs locally.
Test JavaScript regular expressions with live match highlighting, capture groups, flags, and replace preview.