How FileLume Processes Files

Not every FileLume tool runs locally. Browser tools keep the active file in the current tab, server tools upload the file over HTTPS for the requested operation, and hybrid tools may combine local preparation with server processing.

Quick Facts

On-device tools: The file is processed in browser memory for the active tab and is not uploaded to FileLume for the operation.
Server tools: The file is uploaded over HTTPS for the requested operation and temporary working files are deleted when the request finishes.
Hybrid workflows: FileLume should explain which steps run locally and which require server processing before the server step starts.
Verification: Check the processing label and file-handling text on each tool page before selecting a sensitive file.

Browser-local processing

For on-device tools, FileLume runs the operation in the browser tab. The active file can still exist in browser memory, previews, and temporary object URLs until you close, reload, clear the workflow, or the page releases them.

Browser-local processing is limited by browser support, device memory, file size, and the libraries available in the page.

Server processing

Some tools require server processing because the job needs OCR, Office conversion, large-file handling, or another backend worker. Those tools should say that the file is uploaded over HTTPS before the operation starts.

Server-processing disclosures describe the purpose of the upload and the temporary handling window. They are not the same as saying every tool is local.

Hybrid processing

A hybrid workflow can prepare or preview locally, then send only the requested job to a FileLume worker when the selected operation requires it.

When a workflow changes modes, the tool page should make that transition clear before the server step begins.

Transport encryption is different from local processing

HTTPS protects data in transit between the browser and server. It does not mean the file stayed on the device.

Local processing means the operation completes in the browser without uploading the selected file to FileLume for that operation.

File-safety guidance

Keep original files, review outputs before relying on them, and avoid using sensitive documents on any website unless the tool disclosure fits your risk level.

For server tools, check the visible purpose, limit, and temporary-file handling text before upload.

Frequently Asked Questions

Does FileLume upload every file?

No. Many tools process on-device, but server tools upload files for the requested operation. Check the label on the tool page.

Does HTTPS mean a tool is local?

No. HTTPS describes transport encryption. Local processing means the file operation completes in the browser without a FileLume upload for that operation.

How can I verify a tool mode?

Open the tool page and read the processing label, file-handling note, accepted formats, and limits before selecting a file.

Sources checked

External product facts were checked on the dates below. Re-check before making a purchase decision.

FileLume processing labels — reviewed 2026-07-18
FileLume privacy policy — reviewed 2026-07-18

How FileLume processes files