Gizmobench, a browser bench for small jobs

Field notes

The collection is organized into four practical groups: 3D and CAD, Markdown, developer and data, and everyday calculations or conversions. Its developer bench includes structural JSON comparison, CIDR subnet ranges, JWT claim inspection, IBAN checksum checks, and UUID generation, while the everyday section adds tools such as barcode generation and dog-age calculation. The site states that processing remains in the browser and that offline use is supported; batch processing is described only as a possible future professional extra.