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Supports: NEF
NEF (Nikon Electronic Format) is Nikon's proprietary RAW format — the unprocessed sensor data captured by every D-series DSLR (D3500, D7500, D750, D780, D850) and Z-series mirrorless body (Z5, Z6 II, Z7 II, Z8, Z9). NEF files are 20-60 MB each, contain 12-bit or 14-bit color depth, and require Nikon NX Studio, Adobe Lightroom, Capture One, or DxO PhotoLab to open. JPEG is the universal compressed image format — opens on every phone, laptop, browser, social platform, and print kiosk on earth. Common reasons photographers convert NEF → JPEG:
| Property | NEF (Nikon RAW) | JPEG |
|---|---|---|
| Compression | Lossless (or uncompressed) | Lossy (DCT) |
| Color depth | 12-bit or 14-bit per channel | 8-bit per channel |
| Typical file size | 20-60 MB | 1-10 MB |
| Editing latitude | Wide — can recover ±2 stops, full white balance freedom | Narrow — limited highlight/shadow recovery |
| Native viewer | Nikon NX Studio, Lightroom, Capture One, DxO | Every browser, OS, phone, print kiosk |
| Social media upload | Not accepted | Universal |
| EXIF metadata | Full (camera, lens, settings, GPS) | Preserved on conversion |
| Best for | Master originals, future re-edits | Sharing, web, email, print delivery |
| Preset | JPEG quality | Output size (from 45 MB NEF) | Best for |
|---|---|---|---|
| Highest | ~98% | 8-15 MB | Archival, large prints, hero images |
| Very High (default) | ~92% | 4-9 MB | Client delivery, portfolios, fine-art proofs |
| High | ~85% | 2-5 MB | Web galleries, blog posts, email |
| Medium | ~75% | 1-3 MB | Social media, contact sheets |
| Low | ~60% | 400-900 KB | Thumbnails, quick reviews |
| Very Low | ~40% | 100-400 KB | Email previews, mobile messaging |
Yes — EXIF metadata transfers from NEF to the JPEG output. Camera body (Z9, D850, etc.), lens model (NIKKOR Z 24-70mm f/2.8 S, AF-S 70-200mm f/2.8E), shooting mode, shutter speed, aperture, ISO, focal length, and GPS coordinates all carry over. If you want to strip metadata before publishing online — common for protecting location privacy — enable the "remove EXIF" option in advanced settings.
Yes — always. NEF holds 12-14 bits of color per channel and full sensor data; JPEG is 8-bit and lossy. Once you discard the NEF, you can't recover blown highlights, fix white balance from scratch, or re-edit with new software in 5 years. Standard workflow: keep NEF masters on backup drives or cloud (Backblaze, Carbonite, iDrive) and treat JPEG as a delivery/share format only.
Close, but not identical. Nikon NX Studio applies the in-camera Picture Control (Standard, Vivid, Neutral, Portrait, Landscape, Monochrome) and any custom curves you set. Lightroom applies Adobe's default RAW interpretation. Our converter uses libraw-derived demosaicing with neutral defaults — colors are accurate but not "Nikon-rendered." For client delivery where color science matters, edit in NX Studio or Lightroom first, then export. For quick web shares and proofs, the inline conversion is great.
Slightly — 14-bit gives more shadow recovery latitude in editing, but once you've committed to JPEG (8-bit), most of that headroom is collapsed during the conversion. The visible difference in the final JPEG is small. The benefit of 14-bit is in the editing pipeline before JPEG output, not after.
Yes — drop in 100, 500, or even 2,000+ NEF files. Each converts in parallel within your browser session and downloads as a ZIP. Useful for wedding shooters and event photographers prepping client galleries from a single day's shoot. Nothing uploads to a server, so even a 60 GB NEF folder stays private.
Same workflow applies for other camera makers. See CR2 to JPG for Canon EOS DSLRs, ARW to JPG for Sony Alpha bodies, DNG to JPG for Adobe / phone DNG, and RAF to JPG for Fujifilm X-series. The math is the same: RAW master → JPEG delivery.
NEF stores raw 12/14-bit sensor data with no demosaicing applied — it's a digital negative. JPEG stores a finished, demosaiced, 8-bit image with DCT-based lossy compression. A 45 MB NEF routinely becomes a 4-8 MB JPEG at "Very High" — that's a 5-10× reduction with very little visible quality loss for normal viewing distances. This is normal and expected.
No — identical format. "JPEG" is the full name (Joint Photographic Experts Group); "JPG" is the legacy 3-character extension from DOS-era filesystem limits. Both are byte-for-byte compatible. See NEF to JPG if you prefer the .jpg extension.
No — JPEG is a lossy format by design. The default "Very High (Recommended)" preset (~92% quality) produces output that is visually indistinguishable from the source for almost all viewing scenarios, but a pixel-peep comparison will show DCT artifacts. For a true lossless conversion of NEF, convert to NEF to TIFF or NEF to PNG instead.