A free Negative Lab Pro alternative for browser-based film conversion.
Negative Converter is a free, open source film negative converter that runs in the browser or offline desktop app. It is built for photographers who want a standalone tool instead of a Lightroom plugin workflow.
When Negative Converter is a good fit
Negative Converter is a good Negative Lab Pro alternative when you need a free, standalone, no-upload tool for converting film negatives to positives. It is strongest for quick browser workflows, privacy-sensitive scans, 16-bit output, RAW files, and batch conversion outside Lightroom.
It is not designed to duplicate a Lightroom catalog workflow. If your entire editing and archive system already lives inside Lightroom, a dedicated Lightroom plugin may still be the more integrated option.
Feature comparison
| Need | Negative Converter | Lightroom plugin workflow |
|---|---|---|
| Cost | Free, open source, no account | Usually paid software or plugin license |
| Where it runs | Browser or offline desktop app | Inside Lightroom Classic |
| Image upload | No upload; local browser processing | Local desktop workflow |
| RAW files | CR2, CR3, NEF, ARW, DNG, RW2, and more | Uses Lightroom RAW support |
| Catalog integration | No catalog integration | Integrated with Lightroom catalogs |
| Batch roll workflow | Roll reference and apply-to-selected controls | Catalog-based batch workflow |
| Output | PNG, JPEG, TIFF, including 16-bit PNG/TIFF | Depends on Lightroom export settings |
This page is a functional comparison only. Negative Converter is not affiliated with Negative Lab Pro or Adobe Lightroom.
Best use cases
- Trying film scanning without buying software first.
- Converting one-off negatives on a shared or temporary computer.
- Keeping family archive scans off upload-based tools.
- Processing RAW camera scans without starting a full Lightroom session.
- Exporting 16-bit PNG or TIFF files for later finishing.