3FR to JFIF Converter

3FR to JFIF: A Hasselblad Capture as a Plain JPEG

.3fr is Hasselblad's 3F RAW — the undeveloped file its medium-format bodies and digital backs write, built on a TIFF-like structure with camera-specific tags that general-purpose viewers do not understand. It is meant to be opened in Phocus, Lightroom, Camera Raw or Capture One and developed, not double-clicked.

.jfif is a JPEG. Same baseline DCT data as a .jpg, same markers, different four characters after the dot. You land on this page when something in a workflow — an asset importer, a submission portal, a records system — asks for that extension by name and will not take .jpg. This converter develops the raw and writes the result out under the name you were asked for.

What Survives the Develop, and What Does Not

Turning sensor data into a JPEG is a one-way step. It is worth knowing exactly what you are trading before you run it on a shoot.

The resolution row is worth pausing on. Some conversions on this site clamp large images before encoding, but that clamp belongs to the video pipeline; an image-to-image conversion like this one does not touch dimensions at all. On Keep original, a 100-megapixel capture produces a 100-megapixel JPEG.

How to Convert 3FR to JFIF

1. Upload Your 3FR File: Drag the .3fr onto the page or click "+ Add Files" to browse. Several captures can be queued, though medium-format raws routinely run past 100 MB each, so the upload is normally the slow part of the job.
2. Pick a Quality Preset: Under Image Compression, Quality Preset runs Highest, Very High (Recommended), High, Medium, Low, Very Low, Lowest, and opens on Very High (Recommended). Specific file size with an Auto Scale toggle is the alternative when a byte ceiling is being enforced on you.
3. Set Image resolution if full sensor size is too much: The group opens on Keep original. Resolution Percentage, Preset Resolutions (4320p down to 16P), Width, Height and Width x Height are all available — and on a medium-format frame this is the control that matters most, because full resolution is rarely what the destination wants.
4. Convert and Download: Click Convert and save the .jfif. Files are uploaded over an encrypted connection, developed on our servers and deleted automatically after a few hours — no sign-up, no watermark, never shared or made public.

Where the Quality Preset Costs You Money

Medium format is exactly where JPEG's top quality rung stops being sensible, because the file sizes are already large before you start. We pushed a detailed 8272 x 6200 photographic frame — 51 megapixels, the size a 50 MP back produces — through the same libvips JPEG writer this page uses, at every rung:

The Highest rung costs three and a quarter times the Very High file for a difference nobody can see on a photograph — that is JPEG's well-known behaviour as quality approaches its ceiling, where the encoder starts spending enormous numbers of bits encoding its own rounding noise. Very High is the right default and High is a genuinely good delivery setting. Medium is where the encoder stops storing colour at full resolution, which is invisible on most photographic content and ugly on saturated edges.

If you need an archival copy rather than a delivery copy, JPEG at any rung is the wrong tool — 3FR to TIFF gives you a lossless render, and the .3fr itself remains the only file that can be reinterpreted later.

Frequently Asked Questions

Is a .jfif file different from a .jpg in any real way?

No. JFIF is the interchange convention that describes how JPEG-compressed data is packaged for exchange, and virtually every .jpg in the world already follows it. What this page writes is a baseline JPEG: the extension is the only difference. If a program refuses the file, renaming it to .jpg is a complete fix, and JFIF to JPG will do the rename properly if you would rather not touch the filename by hand.

Will the colours match what Phocus shows me?

Not exactly. A .3fr carries a Hasselblad colour profile tied to the individual camera, and Phocus applies that profile as part of its own render. This converter develops the raw with its own defaults, so colours can drift — usually slightly, sometimes visibly under mixed lighting. For colour-critical work the dependable route is to finish the file in Phocus or Capture One, export a JPEG or TIFF, and convert that export if you need the .jfif extension specifically.

Does the JFIF keep the full sensor resolution?

Yes, on Keep original, which is what the page opens on. Nothing downscales an image-to-image conversion — a 100-megapixel capture yields a 100-megapixel JPEG. That is often not what you want: the resulting file is large, slow to open and far beyond what a web page or a client preview needs. Use Preset Resolutions or Resolution Percentage to bring it down deliberately rather than shipping a full-sensor JPEG by accident.

Which rung should I use for a client proof?

High, or Very High if the images will be examined closely. Both keep full-resolution colour, and the step from Very High down to High saves roughly a third of the file for no visible change on photographic content. Skip Highest entirely unless someone has specifically asked for a maximum-quality JPEG — it more than triples the size to encode detail that is not visually there.

Can I get the file under a specific size limit?

Yes. Switch Image Compression to Specific file size, enter the ceiling, and leave Auto Scale on so the encoder is allowed to reduce dimensions as well as quality to reach it. On a medium-format frame that matters — hitting a 2 MB target on a 51-megapixel image by quality alone would require a rung so low the picture falls apart, whereas reducing the pixel dimensions first gets there cleanly.

Does the EXIF and shooting metadata come across?

Standard capture fields — camera, lens, shutter, aperture, ISO, date — travel into the JPEG. What cannot travel is anything that only exists as raw: the undemosaiced sensor data itself and Hasselblad's maker-note block, which holds camera-specific settings a third-party renderer has no way to reconstruct from a finished image. Keywords and copyright are safest re-applied in your cataloguing software after export.

Why is my raw not being accepted?

Check that the extension really is .3fr and that the file copied off the card completely. This page is tuned for the .3fr extension specifically, so a renamed file, a .fff from a Hasselblad workflow, or another manufacturer's raw will not go through here. A truncated capture — a copy interrupted partway — fails at the develop step rather than producing a partial image.

Can a JFIF have a transparent background?

No. JPEG has no alpha channel of any kind, and a camera capture has no transparency to preserve in any case. If you need a cut-out you will have to remove the background in an editor afterwards, or work from 3FR to PNG, which does carry an alpha channel for whatever you do to it later.

Should I keep the original .3fr after converting?

Always. The JFIF is a delivery copy of one interpretation of the capture — one white balance, one exposure, one tone curve, at 8 bits per channel. The .3fr is the only file that still holds the sensor data, and it is the only one you can go back to when a client wants the shot warmer, the highlights pulled back or a different crop. Treat the conversion as an export, never a replacement.

What happens to my capture after the conversion?

It is uploaded over an encrypted connection, developed on our servers, and both the upload and the image it produced are deleted automatically after a few hours. Nothing is shared or made public, and there is no sign-up or watermark. Because a single medium-format capture can pass 150 MB, transfer time rather than processing time is what you will be waiting on — convert in small batches rather than one long queue.