Troubleshooting

A tool does not load

1. 1Confirm that JavaScript is enabled and reload the page.
2. 2Use a current version of Chrome, Edge, Firefox, or Safari.
3. 3Temporarily disable strict content blockers for lumli.io and retry.
4. 4Clear Lumli site data if an old cached version appears stuck.
5. 5Try a private window to identify extension or cache conflicts.

Processing stops or the tab crashes

• Close unused tabs and applications to free memory.
• Try a smaller image, fewer PDF pages, or a lower output scale.
• Process large batches one file at a time.
• Use a desktop device for memory-intensive AI or PDF operations.

The file is rejected

Check that the selected tool accepts the real file format, not only the extension. Re-export damaged or unusual files in a standard application, then try again. Password-protected, malformed, animated, layered, or uncommon variants may require preprocessing.

The output quality is unexpected

• Start again from the original rather than a previously compressed output.
• Increase quality or dimensions gradually and inspect the preview.
• Use PNG when transparency or sharp graphic edges matter.
• Remember that upscaling and retouching estimate missing content and may need manual review.

Offline mode does not work

Reconnect, open the required tool, allow all assets and models to finish loading, and run a test. Private browsing, automatic storage cleanup, restrictive browser settings, or a newly updated app can prevent the required cache from being available.

Still need help?

Contact support@lumli.io with the tool name, browser and version, device type, file format, approximate file size, and the step that failed. Do not email confidential source files unless support explicitly requests a safe diagnostic sample.