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What should I do if Download All doesn't work?
Sometimes the files finish converting but Download All still fails. When that happens, the trouble is usually in the step where the browser gathers the successful files and prepares them for download, not in the earlier conversions themselves.
Start by checking what already worked. Do not assume you need to rerun the whole batch.
Why can Download All fail after conversion finishes?
Conversion is not the last step. After the files finish converting, the browser still has to organize the successful results and prepare the bundled download. If the batch is heavy enough, that later step can slow down or fail even when the conversions already finished.
So a successful conversion and a working Download All button are connected, but they are not the same thing.
When is Download All more likely to fail?
Download All is more likely to struggle in situations like these:
- The batch contains many files
- Individual files are large and the total load is heavy
- The browser or device has very little headroom left
- Many tabs are open, or other apps are already using resources
- A heavier batch is running on a phone
What should I check first?
1. Check whether successful files are still there
If some files already converted successfully, keep those results in mind first. You may not need to redo the full batch.
2. Separate conversion problems from later download-stage problems
If the files themselves are not converting, the issue starts earlier. If the files do convert but only Download All fails, the issue is more likely to be in the later step where the browser packages the results for download.
3. Check whether the batch is simply too heavy
If the job was already large, the files were large, or the flow had been slowing down before the end, the batch may simply be too heavy for the device you are using.
What is the safest way to continue?
If you already have successful files, keep those first.
A good next order is:
- Save the files that already converted successfully
- If Download All is unavailable, download files one by one first
- If you still want a fresh full set later, rerun the job as smaller batches
In most cases, this means the later download step failed, not that every earlier result disappeared.
When should I split the batch, switch to desktop, or use a local tool?
Change the approach instead of repeating the same run when:
- The failure shows up in Download All
- The whole flow becomes clearly slow before the end
- The batch contains many files
- Individual files are large
- The batch feels heavy on a phone
- The same problem keeps coming back after splitting
- You need to process a very large batch at once
- You want less dependence on browser conditions
If the batch is only a little too heavy, splitting it may be enough. If the same problem keeps coming back even after splitting, or the workload is large from the start, a desktop or local tool is usually the better option.
When should I check Why do some HEIC files fail to convert? first?
If the real problem is not Download All, but the files themselves failing during conversion, start with: Why do some HEIC files fail to convert?
That usually means the issue is in the files, where they came from, or the size of the batch, not in the later download step.
Next steps
If you already have successful results, keep those first, then retry with a smaller batch if needed.
If the problem looks more like a conversion problem than a later download problem, also check: Why do some HEIC files fail to convert?