FAQ — ConvertFlow

Are my files uploaded to a server?

No. All processing happens locally in your browser. Files never leave your device.

What formats can I convert?

We support JPG, PNG, WebP, GIF, BMP, HEIC, SVG, and PDF — including merge, split, and compress tools. See our tools page for all 13+ conversion options.

Is there a file size limit?

Limits depend on your browser and device memory. Most files under 50 MB convert without issues. Very large files may take longer or fail on low-memory devices.

Which browsers are supported?

ConvertFlow works in all modern browsers: Chrome, Firefox, Safari, and Edge. JavaScript must be enabled.

Can I convert multiple files at once?

Yes. Images to PDF and PDF Merge accept multiple files. PDF Split and PDF Image Extractor offer a ZIP download when multiple output files are created. Most other tools process one file at a time.

Is ConvertFlow free?

Yes, ConvertFlow is completely free with no usage limits or premium tiers.

How do I convert iPhone HEIC photos?

Open the HEIC to JPG or HEIC to PNG converter, upload your photo, and download. Works best in Chrome or Edge on desktop.

How does SVG to PNG conversion work?

We render the SVG onto an HTML canvas at your chosen resolution, then export the canvas as a PNG, JPG, or WebP file.

Can I use ConvertFlow offline?

Image and SVG tools can work offline after the first visit. PDF, HEIC, and ZIP tools load libraries from a CDN, so an internet connection is required for those features.