SVG and the File System Access API
Modern browsers can read and write SVG files directly to the user's file system — no download-link workaround needed.
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Opening SVG Files Directly
`window.showOpenFilePicker({ types: [{ accept: { 'image/svg+xml': ['.svg'] } }] })` lets users select an SVG file that your web app reads directly via the returned file handle — useful for browser-based SVG editors that need genuine file-system read access, not just a file input.
- showOpenFilePicker filters to SVG files with type restrictions
- Returns a file handle for direct reading, not just a one-time upload
- Enables true browser-based file editing workflows for SVG tools
Saving SVG Files Directly
`window.showSaveFilePicker()` lets a web-based SVG editor save changes back to the user's chosen file location directly, avoiding the download-link workaround — particularly valuable for iterative editing workflows where users save the same file repeatedly during a session.
- showSaveFilePicker enables direct file saves without download links
- Ideal for iterative editing tools saving the same file repeatedly
- A real file handle lets subsequent saves skip the picker dialog
Frequently Asked Questions
Does the File System Access API work in all browsers?
No — support is currently strongest in Chromium-based browsers (Chrome, Edge); Firefox and Safari have limited or no support, so always provide a download-link fallback for those browsers.
What's the advantage over a standard file input?
A standard file input only reads a file once for upload; the File System Access API returns a persistent handle enabling repeated reads and writes back to the same file without the user re-selecting it each time.
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