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HEIC Image Converter  ·  Support & Privacy

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Find quick answers below. For anything not covered here, reach out directly at adinhal@icloud.com — we're happy to help.

Castform supports converting HEIC/HEIF images to JPEG, PNG, WebP, PDF, TIFF, BMP, and GIF. You can choose your preferred output format from the dropdown on the home screen before converting.
Never. All conversions happen entirely on your device. Your photos never leave your iPhone — no servers, no cloud, no third-party services involved at any point.
Yes! Castform supports batch conversion. Simply tap the upload area and select multiple images from your photo library. All selected files will be converted to the same output format in one go.
After conversion, tap "Save converted file(s)" to share them anywhere — your Photos library, Files app, AirDrop, email, or any other destination your device supports. Castform keeps a history of your last 10 conversions so you can re-export them anytime by tapping the file in the list.
Castform includes a Share Sheet extension. Open any photo in the Photos or Files app, tap the Share button (the box with an arrow), scroll through the action row, and select Castform. You'll be prompted to choose a format, and the converted file will be ready instantly.

Still have a question?

Something not covered above? Drop us a message and we'll get back to you as soon as possible.

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Privacy Policy

Castform Privacy Notice

Last updated: May 17, 2026

This Privacy Notice for Castform ('we', 'us', or 'our') describes how and why we might access, collect, store, use, and/or share your personal information when you use our services. Questions or concerns? Email us at adinhal@icloud.com.

Table of Contents

  1. What Information Do We Collect?
  2. How Do We Process Your Information?
  3. What Legal Bases Do We Rely On?
  4. When and With Whom Do We Share Your Personal Information?
  5. How Long Do We Keep Your Information?
  6. How Do We Keep Your Information Safe?
  7. What Are Your Privacy Rights?
  8. Controls for Do-Not-Track Features
  9. Do United States Residents Have Specific Privacy Rights?
  10. Do We Make Updates to This Notice?
  11. How Can You Contact Us?
  12. How Can You Review, Update, or Delete Your Data?

Summary of Key Points

What personal information do we process? We may process personal information depending on how you interact with us and the Services.

Do we process sensitive personal information? No. We do not process sensitive personal information.

Do we collect information from third parties? No. We do not collect any information from third parties.

How do we process your information? To provide, improve, and administer our Services, for security and fraud prevention, and to comply with law.

How do we keep your information safe? We have appropriate organisational and technical processes in place, though no transmission over the internet is 100% guaranteed to be secure.

1. What Information Do We Collect?

Personal information you disclose to us

We collect personal information that you voluntarily provide when you express interest in our products, participate in activities on the Services, or contact us. We do not process sensitive information.

Application Data

If you use our app, we may collect the following if you grant permission:

  • Mobile Device Access: We may request access to certain device features such as your camera and storage. You can manage these permissions in your device's settings at any time.

This information is primarily needed to maintain the security and operation of the app and for internal analytics and reporting.

2. How Do We Process Your Information?

We process your information to provide, improve, and administer our Services, communicate with you, and for security and fraud prevention. We process your personal information only when we have a valid legal reason to do so, including:

  • To save or protect an individual's vital interest, such as to prevent harm.

3. What Legal Bases Do We Rely On?

We only process your personal information when we believe it is necessary and we have a valid legal reason. If you are in the EU or UK, we rely on: Consent, Legal Obligations, and Vital Interests. If you are in Canada, we rely on express or implied consent, which you may withdraw at any time.

4. When and With Whom Do We Share Your Personal Information?

We may share your personal information in the following situations:

  • Business Transfers: We may share or transfer your information in connection with any merger, sale of company assets, financing, or acquisition of all or a portion of our business.

5. How Long Do We Keep Your Information?

We keep your personal information only for as long as necessary to fulfil the purposes outlined in this Privacy Notice, unless a longer retention period is required by law. When we have no ongoing legitimate business need to process your information, we will delete or anonymise it.

6. How Do We Keep Your Information Safe?

We have implemented appropriate technical and organisational security measures to protect your personal information. However, no electronic transmission over the Internet can be guaranteed to be 100% secure. You should only access the Services within a secure environment.

7. What Are Your Privacy Rights?

Depending on your location (EEA, UK, Switzerland, Canada), you may have rights to: access a copy of your personal information, request rectification or erasure, restrict processing, data portability, and object to processing. To exercise these rights, contact us at adinhal@icloud.com.

If you are in the EEA or UK and believe we are unlawfully processing your information, you may complain to your local data protection authority. If you are in Switzerland, you may contact the Federal Data Protection and Information Commissioner.

8. Controls for Do-Not-Track Features

Most web browsers and some mobile operating systems include a Do-Not-Track ('DNT') feature. Because there is currently no uniform technology standard for recognising DNT signals, we do not currently respond to them. If a standard is adopted that we must follow, we will update this Privacy Notice accordingly.

9. Do United States Residents Have Specific Privacy Rights?

If you are a resident of California, Colorado, Connecticut, or another applicable US state, you may have additional rights regarding your personal information, including:

  • Right to know whether we process your personal data
  • Right to access and correct your personal data
  • Right to request deletion of your personal data
  • Right to opt out of the sale or sharing of personal data
  • Right to non-discrimination for exercising your rights

We have not disclosed, sold, or shared any personal information to third parties for a business or commercial purpose in the preceding twelve (12) months, and we will not do so in the future.

To exercise your rights, email us at adinhal@icloud.com.

10. Do We Make Updates to This Notice?

Yes, we may update this Privacy Notice from time to time to stay compliant with relevant laws. The updated version will be indicated by an updated date at the top of this notice. We encourage you to review this Privacy Notice periodically.

11. How Can You Contact Us?

If you have questions or comments about this notice, you may contact us at:

12. How Can You Review, Update, or Delete Your Data?

You have the right to request access to, correction of, or deletion of the personal information we collect. To do so, please contact us at adinhal@icloud.com. We will respond in accordance with applicable data protection laws.