Frequently Asked Questions

ConvertHub is an online file conversion service that allows you to convert files from one format to another without installing any software. Simply upload your file, select the desired output format, and we'll handle the conversion for you. Once completed, you can download your converted file immediately.

No, you can use our basic conversion services without creating an account. However, registered users enjoy benefits like higher file size limits, longer file storage periods, and access to premium conversion options.

Most conversions complete within seconds to a few minutes, depending on the file size, format complexity, and current server load. Larger files or more complex conversions may take longer. You'll be notified when your conversion is ready for download.

We support a wide range of file formats across different categories:

• Image: JPG, JPEG, PNG, GIF, BMP, TIFF, TGA, EPS, PS, WebP, HEIC, HEIF, PSD, AVIF, ICO, SVG, and more
• Document: HTML, HTM, PDF, DOC, DOCX, XLS, XLSX, PPT, PPTX, PPTM, POT, POTX, PPS, PPSX, TXT, RTF, CSV, PAGES, NUMBERS, KEY, ODT, ODS, ODP, MD, XPS, and more
• E-Book: AZW, AZW3, AZW4, EPUB, LRF, MOBI, PDB, FB2, LIT, and more

For a complete list of supported formats, please visit our specific conversion tool pages.

Free users can upload files up to 100MB. Premium users can upload files up to 2GB. For larger files, please contact us for enterprise solutions.

Free users can convert one file at a time. Premium users can batch convert multiple files simultaneously, saving time and effort. You can also upload ZIP archives containing multiple files of the same type for batch processing.

Yes, we take security seriously. All file transfers are protected with TLS/SSL encryption. We use CloudFlare R2 for secure file storage with encryption at rest. Our systems are regularly audited for security vulnerabilities.

We do not access or view the content of your files except in limited circumstances where it's necessary to provide support or troubleshoot issues.

For free users, we automatically delete all uploaded and converted files after 24 hours. For premium users, files are stored until you manually delete them or terminate your account.

When files are deleted from our system, they are permanently removed and cannot be recovered, so please download your converted files promptly.

No, we do not share your files with any third parties. Your files are used solely for the purpose of providing our conversion service to you. Please see our Privacy Policy for complete details on how we handle your data.

We strive to maintain the highest possible quality during conversions. However, some quality loss may occur depending on the formats involved:

• When converting between similar formats (e.g., PNG to JPG), minimal quality loss may occur.
• When converting between different types of formats (e.g., video to audio), only the relevant information is retained.
• When converting to a format with inherent limitations, those limitations will apply to the output file.

Premium users have access to higher quality conversion settings, including lossless options where available.

Yes, most conversion types offer basic customization options such as quality settings, resolution, and bit rate. Premium users have access to advanced customization options including:

• Video: frame rate, codec selection, aspect ratio
• Audio: sample rate, channels, normalization
• Images: compression level, DPI, color profile
• Documents: layout preservation, font embedding, metadata handling

Yes, our basic conversion services are completely free to use, with some limitations:

• File size limited to 100MB
• 24-hour file storage
• Basic conversion options only
• Single file conversion at a time

Premium plans are available for users who need more advanced features, higher limits, and priority processing.

Premium members enjoy several advantages:

• Increased file size limit (up to 2GB)
• Unlimited file storage until manual deletion
• Batch conversion of multiple files
• Advanced conversion settings
• Higher quality conversion options
• Priority processing
• No advertisements
• Dedicated support

You can cancel your premium subscription at any time from your account dashboard. After cancellation, your premium benefits will remain active until the end of your current billing period. No refunds are provided for partial billing periods.

If you have any issues with cancellation, please contact our support team at [email protected].

Conversions may fail for several reasons:

• The file is corrupted or damaged
• The file format is not supported or recognized correctly
• The file is password-protected or encrypted
• The file exceeds the size limit
• The conversion server experienced temporary issues

If your conversion fails, try uploading the file again or contact our support team for assistance.

If you're having trouble uploading files, try these steps:

• Check your internet connection
• Make sure the file doesn't exceed the size limit (100MB for free users)
• Try using a different browser
• Clear your browser cache and cookies
• Disable any browser extensions that might interfere with uploads
• Try compressing the file first if it's large

If you still can't upload, please contact our support team with details about the file and the error you're experiencing.

Different file formats have different capabilities and limitations. When converting between formats, some features or formatting may change:

• Complex formatting in documents may change when converting between document formats
• Font substitution may occur if specific fonts aren't available
• Image resolution or color profiles may adjust to meet format requirements
• Audio or video quality may change based on codec and compression settings

For the most accurate conversions, premium users have access to advanced settings that help preserve more of the original file's characteristics.