Help
Help
This Help section covers the issues people run into most often while converting HEIC files in batches.
If some files fail, Download All stops working, the batch feels too large, or you want to understand how browser-side processing works, start with the page that matches your situation.
Browse topics
Why do some HEIC files fail to convert?
Explains the most common file-level and batch-level reasons HEIC conversions fail and what to check first.
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Why does the tool recommend limits for batch size and file size?
Explains why the tool shows batch-size guidance and how to tell when the current batch is too heavy.
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What should I do if Download All doesn't work?
Explains why Download All can fail after conversion and how to keep the files that already worked.
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Are files uploaded to a server? What does browser-side processing mean?
Explains what browser-side processing means here, what it does and does not guarantee, and when local tools are a better fit.
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Back to conversion
If you are ready to keep converting, go back to the tool and continue from there.
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