UltKit

RAW to JPG Converter for Whole Shoots

Clear a memory card's worth of raw files in runs of 20, with files from different camera brands side by side, and take each run home as a single ZIP of JPGs.

Image Converter

or drop JPG, JPEG, JPE … files here ·

Max 95 MB per file· Up to 20 files· Deleted after 30 minutes

Output

Files are processed on our servers and deleted after 30 minutes.

How to use this tool

  1. 1

    Select up to 20 raw files

    Pick them straight from the card or a folder. CR2, CR3, NEF, ARW, DNG, RAF, ORF, PEF and RW2 can sit in the same selection, each up to 95 MB.

  2. 2

    Set the batch options once

    Quality 90 and kept EXIF apply to every file in the run. Under Advanced settings you can add Resize output image for a client gallery or tick Strip metadata for public posts.

  3. 3

    Press Convert to JPG and take the ZIP

    Download the run as one ZIP, then start the next 20. Uploads are deleted after 30 minutes.

This page is set up for volume: a full run of 20 raw files, any mix of camera brands, the same JPG settings applied to all of them, and one ZIP at the end.

Batch RAW to JPG converter limits for one run

A desktop raw editor is the right tool when every frame deserves its own exposure and white balance decision. It is slow when the job is simply to turn yesterday's shoot into JPGs a client, a relative or a print lab can open. Here, one set of options covers the whole selection, and the converter reads nine raw formats without needing a camera-specific plugin. The single-file explainer on RAW to JPG covers what development does to each picture; this page is about moving many files through quickly.

Raw files per run
20
Largest single raw file
95 MB
Raw formats in one batch
9
Before uploads are deleted
30 min

A workflow for converting a full memory card

  1. Copy the card first

    Back up the raw files to a drive before converting. The JPGs are delivery copies; the raw files stay your masters.

  2. Cull before you convert

    Delete blinks and misfires first. Twenty keepers per run is faster than converting frames nobody will see.

  3. Fix duplicate names

    When two bodies of the same brand were used, give one set a prefix so the ZIP never holds two IMG_0001.jpg files.

  4. Run, download, repeat

    Convert 20, save the ZIP into a dated folder, select the next 20. Keep the ZIPs until every run is unpacked.

Raw file names by camera brand

  • Canon: IMG_0001.CR2

    CR3 bodies keep the same IMG_ prefix. An underscore first, as in _MG_0001, marks Adobe RGB color space.

  • Nikon: DSC_0001.NEF

    Adobe RGB files start _DSC instead. Many Z bodies let you replace DSC with three letters of your own.

  • Sony: DSC00001.ARW

    The prefix is DSC0 plus a four-digit counter. Two Sony bodies on one shoot produce overlapping names.

  • Fujifilm: DSCF0001.RAF

    The F after DSC makes Fujifilm files easy to pick out of a mixed folder.

  • Panasonic: P1000001.RW2

    The first three digits are the folder number, the last four the frame.

  • Phones: DNG

    iPhone ProRAW and Android Pro modes save DNG files named like the phone's JPG photos.

These patterns come from DCF, the Design rule for Camera File system that JEITA published in 1998: four characters of prefix, four digits from 0001 to 9999, then the extension. Counters roll over after 9999, which is another reason two folders from one camera can collide. Converting each body or each folder in its own run sidesteps the problem without renaming anything.

RAW

Camera raw image

"RAW" is a general name for unprocessed image files saved by digital cameras and some phones, and it is also used as a literal .raw extension by a few manufacturers. Each brand has its own variant, such as CR3 for Canon, NEF for Nikon and ARW for Sony. Raw files keep the full sensor data, giving much more latitude for exposure and colour correction than a JPEG. They are large, cannot be displayed on websites, and need editing software or a converter to become a normal photo.

Compression
–
Transparency
No
Animation
No
Introduced
–
RAW converter

JPG

JPEG image

JPEG (or JPG) is the most widely used photo format, standardised by the Joint Photographic Experts Group in 1992. It uses lossy compression that discards fine detail the eye is unlikely to notice, which keeps photos small enough for the web, email and phone storage. It handles smooth gradients and natural scenes well, but sharp text, line art and flat colours pick up visible blocky or fuzzy artefacts. JPEG has no transparency and no animation, and every re-save loses a little more quality. Every browser, phone, camera and image editor can open it.

Compression
Lossy
Transparency
No
Animation
No
Introduced
1992 · Joint Photographic Experts Group
JPG converter

A batch raw to JPG converter is for the end of a shoot, when dozens of frames from one or more cameras must become shareable files in one pass instead of being exported one by one from a raw editor.

Batch raw converter questions

How do I convert 300 raw files with a 20-file limit?

Work through the folder in runs: select files 1 to 20, convert, download the ZIP, then select the next 20. Sorting the folder by name first makes it easy to see where the last run ended. Fifteen runs cover 300 files.

Why was one raw file in my batch rejected?

Either it is over 95 MB, or its extension is not on the list. Uncompressed raw from 60-megapixel bodies can pass 95 MB; switch the camera to compressed raw for future shoots. Hasselblad 3FR, Phase One IIQ, Sigma X3F and Samsung SRW are not read here.

Two cameras gave me files with the same name. Is that a problem?

It can be inside one ZIP. Two Canon bodies both count IMG_0001 upward, so a wedding shot on two cameras will repeat names. Rename one camera's files with a prefix before uploading, or convert each camera in its own run.

Can I make smaller JPGs for a client preview in the same run?

Yes. Under Advanced settings choose Resize output image, then Set longest side and enter 2048 px. Every JPG in the batch comes out at that size, which keeps a 20-file ZIP to a size most email services and file-transfer links handle easily.

Will the JPGs stay in shooting order?

Each JPG keeps the camera's capture time in its EXIF because metadata is kept by default. Gallery apps, Lightroom and photo labs sort by that timestamp, so frames from different bodies interleave correctly as long as the cameras' clocks were set to the same time.

Do I need different settings for Canon and Sony files in one batch?

No. Each file is decoded with the reader for its own format and developed with the camera's recorded white balance, then all of them share the quality, resize and metadata options you chose. For brand-specific advice see CR2 to JPG or ARW to JPG.