How to convert a PSD to JPG
- Drop one or more .psd or .psb files on the box above.
- Pick the quality, and the colour that transparent areas should become (white unless you change it).
- Download the JPGs one by one or as a ZIP. A short report under each file says how its colours were converted and whether anything was left out.
Why CMYK files change colour, and how to stop it
A PSD made for print stores ink amounts — cyan, magenta, yellow and black — not screen colours. How much red a screen should show for "70% magenta" depends on the paper and press the file was prepared for, and Photoshop records that in an embedded colour profile. Many converters skip the profile and use a fixed formula instead.
We measured the difference on a landscape photo converted to U.S. Web Coated (SWOP), the profile Photoshop offers by default in North America. The reference is LittleCMS, the colour engine used by GIMP and many other programs, reading the same profile:
| Conversion | Average difference | Largest difference |
|---|---|---|
| Fixed CMYK formula (ignores the profile) | 24 of 255 | 56 of 255 |
| This converter (uses the file's profile) | 0.3 of 255 | 2 of 255 |
A 24-step average across the whole picture is a visible shift, and the formula's error is largest in saturated colours, where it reached 56. The same applies to greyscale print files: on a Photoshop file with the "Dot Gain 15%" profile, ignoring it made every grey 29 steps too dark on average. When a file carries no profile at all, the converter falls back to the formula and says so in the report.
When a PSD comes out blank
A layered PSD normally contains a flattened copy of the finished image, and that is what most converters turn into a JPG. If the file was saved with Maximize PSD and PSB File Compatibility switched off, the copy is missing: what is left in its place is blank or reads "This layered Photoshop file was not saved with a composite image". Here the layers are combined in the browser instead, with masks, groups, clipping masks, opacity and the common blend modes.
What cannot be redrawn outside Photoshop is listed by layer name in the report: layer effects such as drop shadows and strokes, and adjustment layers. If the report lists none, the JPG matches the document. If it does, open the file in Photoshop, set Edit → Preferences → File Handling → Maximize PSD and PSB File Compatibility to Always, and save it again.
Quality and transparency
| Quality | Our 480×360 test photo | Use it for |
|---|---|---|
| Maximum (95%) | 80 KB | Proofs that people will zoom into |
| High (90%) | between the two | Most sharing and web use |
| Medium (80%) | 39 KB | Email attachments and upload limits |
JPG cannot be transparent, so transparent areas are filled with the colour you choose and soft edges are blended into it. If you need the transparency, or each layer as a separate image, use PSD to PNG. To bring the JPG under a specific size, run it through Compress Image to a Target Size; to strip the camera and software details a design file can carry, use Remove EXIF Data.
16- and 32-bit documents are reduced to 8 bits per channel, the depth a JPG holds, and PSB large-document files are read the same way as PSDs.
Nothing is uploaded: the PSD is read and turned into a JPG inside your browser.