FAQ

You can sign up with your email or phone number. Click the "Sign up" button at the top right of the page, fill in the required information and complete the verification. Registration is completely free.

Click the "Forgot password" link on the login page and enter the email or phone number you registered with. We will send you a reset link or a verification code.

After signing in, go to "Account center" and click "Account settings" to update your nickname, avatar, password and other personal information.

Yes. Go to "Account center" > "Account settings" > "Account security" and choose "Delete account". Please back up important data first — once deleted, it cannot be recovered.

Members enjoy unlimited use of all tools, faster processing, batch processing, dedicated customer support, an ad-free experience and early access to new features.

After signing in, click the "Upgrade" button at the top right, pick a plan that suits you and complete the payment to activate instantly. Alipay, WeChat Pay and other payment methods are supported.

When your membership expires, your account reverts to the free tier. Your processing history is retained, but some premium features become unavailable. You can renew at any time to restore your benefits.

Within 7 days of purchasing a membership, you can request a full refund as long as you have not used any member-only features. See our refund policy or contact support for details.

Formats vary by tool. Commonly supported formats include PDF, Word, Excel, PPT, images (JPG/PNG/GIF/WebP), video (MP4/MOV/AVI) and audio (MP3/WAV/AAC). Check each tool's page for specifics.

Free users can process files up to 10 MB per file, and members up to 100 MB. Some special tools may have different limits — see the tool page for details.

Processed files are kept for 24 hours by default — please download them promptly. Members can extend retention to 7 days. You can also delete processed files manually in the account center.

Common causes include unsupported file formats, corrupted files, unstable networks or busy servers. Check that your file is valid and try again later. If the problem persists, contact support.

We use bank-grade encryption to protect your files. Files are stored only temporarily during processing and deleted automatically afterwards. We never view, copy or retain your file contents.

We recommend using a strong password, changing it regularly, enabling two-step verification, avoiding staying signed in on public devices and reviewing your sign-in history. Change your password immediately if you notice anything unusual.

We only collect the personal information required to provide the service, including account details (email/phone), usage records and payment information (e.g. membership purchases). See our Privacy Policy for details.