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Help

Frequently asked questions

Is AltFile free to use?

Yes, completely free, with no daily limit and no account required.

Do I need to sign up or log in?

No. You can start converting files the moment you land on the page there is no registration, no email, and no password.

Are my files uploaded to your servers?

No. Every conversion images, PDFs, and data files runs entirely inside your own browser using JavaScript. Your files never leave your device, which also means we never see or store them.

What file types are supported?

Images (PNG, JPG, WebP, AVIF, GIF, animated GIF, ICO), PDFs (merge, split, extract, delete, rotate, sign, compress, convert to/from images), and data formats (CSV, TSV, JSON, XLSX, XML, YAML, Base64), plus utilities like QR codes, hashing, and color conversion.

Is there a daily limit on how much I can convert?

No conversions are unlimited. Everything runs on your own device, so there's no server-side processing cost that would require rationing.

Why can't I convert to AVIF in some browsers?

AVIF encoding is currently only supported by Chromium-based browsers (Chrome, Edge). Firefox and Safari can display AVIF files but cannot yet create them from a browser tab that's a browser limitation, not something this site controls.

How accurate is the Animated → GIF conversion?

It works by playing your source animation in real time and capturing frames, since browsers don't expose a way to read exact frame timing from animated WebP or PNG files directly. This looks correct for the vast majority of animations, though very unusual frame timing may not be captured with perfect precision.

Does this work on mobile?

Yes the tool is fully responsive and works on phones and tablets, though very large files may be slower to process on mobile hardware since conversion happens on your device.

Is there a file size limit?

There is no artificial cap, but because conversion happens in your browser rather than on a server, extremely large files (very high-resolution images or PDFs with hundreds of pages) are limited by your device's own memory and processing power.

Does this site use cookies or track me?

Only advertising cookies, and only if you accept them via the banner shown on your first visit. Declining still gives you full access to every tool. See the Privacy Policy for the full picture in short, there's very little to track since there are no accounts and your files never reach our servers.

Is this safe for kids to use?

Yes. There's no chat, no account creation, no personal information requested anywhere on the site, and nothing uploaded to a server. See the Privacy Policy's Children's Privacy section for details.

I'm in the EU/UK or California what are my privacy rights?

Covered in detail in the Privacy Policy, which has dedicated sections for GDPR (EU/UK) and CCPA/CPRA (California) rights. In practice, the advertising-cookie consent banner is the main control you have, since no account data exists to request or delete.

How do I report a bug or request a new tool?

Reach out via the Contact page every message is read.