Dev Tools · 1h ago
New React Hook Prevents Memory Leaks in File Previews
A new React hook, useObjectUrl, automates the pairing of URL.createObjectURL() and revokeObjectURL() to prevent memory leaks in file previews. It accepts File, Blob, or MediaSource objects and returns a URL string without manual cleanup. The hook is part of the @reactuses/core library and is TypeScript-first.
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This is a practical fix for a common React pitfall, but its impact is limited to developers already using the library.
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React useObjectUrl Hook: Preview Files & Blobs Without Memory Leaks (2026) →
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