How I render screenshot mockups entirely in the browser (and why DOM-to-image was the wrong start)
The constraint Why a screenshot tool uploading your screenshot is a bad default, and what changes if you refuse to. 2. The wrong first attempt DOM-to-image / html2canvas. Show the actual artifacts: font fallback on export, shadows rendering differently than on screen, why foreignObject fidelity is not controllable enough to ship. 3. Direct canvas compositing Layer model, draw order, how device frames are masked over the screenshot. Include the real code for one composite step. 4. Persistence without a server IndexedDB schema, why localStorage runs out, how a project reloads. 5. Export toBlob, devicePixelRatio scaling, batch export across aspect ratios, and the SVG path. 6. What is still slow Main-thread compositing on large canvases. The OffscreenCanvas plan. try it here: https://portfolioframe.com/ Top comments (0)
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