toolsmith

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A set of file-conversion tools that run entirely inside the browser, with no upload. Moving all free-tier computation to the client drops the marginal server cost to zero and turns "your file never leaves the machine" into a differentiator incumbents structurally cannot match — for them, server-side processing is the ad inventory. Image, PDF, video and audio conversion run on Web Workers and WASM (pdf-lib, pdf.js, libheif, mp4box, tesseract.js, DuckDB-WASM), results hand off directly from one tool into the next, and the site also ships explainer articles and a Lab. There is no backend at all.

The toolsmith home page. Its header carries a "No upload · everything runs in your browser" badge beside theme and language dropdowns, and a large heading sits above a search field. An IMAGES section lays out six cards in two columns — image converter, compress, resize and crop, background remover, upscaler and click-to-cut-out — followed by a DOCUMENTS section with merge and split PDF.

TypeScriptNext.jsReactTailwind CSSWeb WorkersWebAssemblypdf-libtesseract.jsDuckDB-WASMPlaywright

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