Frequently asked questions

Yes — 100% free, forever. There is no premium tier, no watermark, no daily limit, and no sign-up. Every tool on the site is fully unlocked for everyone.

No. We don't have accounts at all. There's nothing to sign up for, no email verification, and no password to forget. Just open a tool and use it.

No limits. Convert as many files as you like, as often as you like. Since processing happens on your device, our costs don't scale with your usage — so we never need to charge you.

Never. Every tool runs entirely inside your browser using the File API, Canvas, and WebAssembly. Your files are read from disk, processed in memory, and the result is downloaded straight back to you. No network request ever carries your file content.

Nothing remains. Files exist only in your browser's memory while the tab is open. Close the tab (or refresh) and they're gone — there is no server-side copy to delete because none was ever created.

Yes — this is exactly the scenario we designed for. Contracts, IDs, financial statements, and medical documents never leave your device, which makes ConverterTools safer than upload-based converters for confidential material.

We use no advertising or tracking cookies. The only thing stored locally is your theme preference (light/dark) in your browser's localStorage, and the PWA cache that makes offline mode work.

Images: JPG, PNG, WebP, GIF, BMP. Documents: PDF and TXT. Developer tools handle JSON, Base64, and color formats (HEX/RGB/HSL). We're adding HEIC and SVG support soon.

There's no artificial limit, but everything runs in your device's memory — so files under 100 MB give the smoothest experience. The Background Remover recommends files under 20 MB.

Yes. Image to PDF, Merge PDF, and Image Compressor all accept multiple files in one drop. Batch ZIP downloads for multi-output tools are on our roadmap.

PNG is lossless, and browsers re-encode it less efficiently than dedicated optimizers. For smaller files, choose WebP output in the Compressor or Resizer — you'll typically see 60–90% savings with no visible quality loss. Try the Image Compressor →

Yes. The site is fully responsive and works on iOS Safari, Chrome, Firefox, and Samsung Internet. You can also install it to your home screen for an app-like experience.

Yes — install the app (PWA) and any tool you've used before keeps working without internet. The Background Remover's AI model is also cached locally after first use.

On desktop Chrome/Edge: click the install icon in the address bar. On Android: browser menu → "Add to Home Screen". On iPhone: Safari Share button → "Add to Home Screen".

Processing speed depends on your device's CPU and the file size. Very large PDFs or high-resolution images take longer. Closing other heavy tabs usually speeds things up noticeably.