How to Convert PNG to JPG in Lightroom: Photographer's Workflow
Library → Export with JPEG Quality 80-85 — Lightroom Classic handles any PNG with full metadata. Darktable is a free alternative.
Step-by-step
Import the PNG into the Lightroom catalog
Adobe Lightroom Classic does not support PNG as a primary camera format the way it does RAW, but it imports PNGs as ordinary catalog entries. Use File → Import Photos and Video, navigate to the PNG, and Lightroom adds it to the catalog. PNGs imported into Lightroom are treated as flat files — edits apply, but non-destructive RAW adjustments are unavailable. Darktable behaves the same way for free. This path is most useful for photographers who keep graphics, logos, or layered PNGs alongside their RAW library and want to export them with consistent JPG settings.
Open the Export dialog and set Image Format to JPEG
Select one or more PNGs in the Library module, then go to File → Export. In the Export Location section, choose a folder for the JPGs. In File Settings, set Image Format to JPEG and Quality to 80-85 for web/screen or 90-95 for print. Lightroom's JPEG quality slider is more granular than most converters, with a numerical value and a preview thumbnail showing estimated file size. For a free Lightroom alternative with a similar dialog, see Darktable. Pick the lowest quality that still looks acceptable and click Export.
Set metadata and sharpening for the JPG output
Lightroom shines here — its export dialog exposes metadata and output sharpening options most converters lack. In the Metadata section, choose what copyright, EXIF, and IPTC data should be embedded in the JPG. In Image Sizing, set the long-edge resolution if the JPG needs specific dimensions. In Output Sharpening, apply Sharpen For Screen at Standard amount — this compensates for JPG's softening on typical displays and is essential for web output. Free alternatives like Darktable and Capture One offer comparable metadata and sharpening controls.
Use a free Lightroom alternative for the same workflow
Darktable is a free, open-source Lightroom replacement with a similar Export dialog. Import the PNG, edit if needed, then File → Export → Export to Disk with Image Format set to JPEG and Quality 80-85. Darktable also preserves full EXIF metadata, applies output sharpening, and supports batch export. Capture One is another option with even more refined color science, though it is paid. For photographers who do not need Lightroom's catalog system, Darktable is a strong drop-in alternative.
Batch export multiple PNGs at once
Select all the PNGs you want to export in Lightroom's Library grid, then File → Export. Lightroom applies the same settings (quality, metadata, sharpening, resize) to every selected file and writes the JPGs to the chosen folder. This is the standard photographer workflow for handing off a folder of PNG assets to clients — one export preset, applied to dozens of files, with consistent quality. Darktable supports the same workflow with a saved export preset; Capture One adds per-recipe controls. Save the export settings as a preset for repeat use on future batches.
Verify JPG quality and clean up
After export, open 2-3 output JPGs in Photoshop, Photopea, or your system image viewer to check for compression artifacts. Lightroom's output sharpening usually handles JPG softening well, but always verify text edges and gradients at 100% zoom. If artifacts are visible, increase the JPEG Quality to 90 or apply stronger Output Sharpening. Once the JPGs are approved, keep the source PNGs in the catalog — Lightroom's catalog references original files and does not modify them during export.
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