Why Are Stock Photos Delivered as JPEG Instead of PNG or RAW?

Every download from Cheap Stock Photos arrives as a JPEG, delivered through the "Download JPG" button at up to 8K. People occasionally ask for PNG or RAW instead. Here is why JPEG is the format, what the alternatives actually offer, and when converting makes sense.

Why JPEG

JPEG is the most widely supported image format in existence. Every browser, phone, layout program, print shop and content management system opens it without a plugin. It also compresses photographic content extremely well: an 8K image that would occupy well over 100 MB uncompressed typically lands between 5 and 15 MB as a high-quality JPEG, with differences that are invisible at normal viewing sizes.

The files here are saved at a high quality setting, so the compression is gentle. At 7680 px wide there is far more detail than most projects will ever display, and the few artefacts that exist are smaller than a single pixel at any realistic print or screen size. For stock photos of continuous-tone subjects such as landscapes, food, people and interiors, JPEG is not a compromise; it is the right tool.

What PNG offers, and why it is not used

PNG is lossless, meaning it stores every pixel exactly. It also supports transparency, which is why it is the format of choice for logos, icons and cut-out graphics with a see-through background.

Neither strength helps with full-frame stock photos. There is no transparent area in a scenic image, and lossless storage of photographic noise and gradients is expensive. An 8K photograph saved as PNG would typically weigh 60 to 120 MB, five to ten times the JPEG, with no visible difference. Multiply that across a catalogue and the downloads would be slow and the storage enormous, for no benefit to you.

Why RAW does not apply

RAW is not an image format in the usual sense. It is the unprocessed data captured by a camera sensor, before white balance, sharpening and colour interpretation have been applied. A RAW file exists only because a physical camera recorded it.

The images on this site are AI-assisted stock photos. They were not captured by a sensor, so there is no RAW to hand over; the generated image begins life as pixels already interpreted. Asking for RAW here is like asking for the negative of a painting. The high-quality 8K JPEG is the master file.

When to convert to PNG or TIFF

Converting makes sense once you start editing. A JPEG loses a little quality every time it is re-saved as a JPEG, because each save runs the compression again. To avoid that:

• Open the downloaded JPG and immediately save a working copy as TIFF or PNG before making changes
• Do all your edits, layers and retouching in that lossless copy
• Export a final JPEG for the web, or a TIFF or PDF for print, from the lossless master

TIFF is the traditional choice for print workflows because it supports CMYK, layers and embedded colour profiles. PNG is fine for screen-bound edits and for any composition where you need transparency.

When you must save as JPEG again, choose the highest quality setting your software offers (12 in some programs, 95 to 100 in others) and disable chroma subsampling if the option is available. Avoid opening and re-saving the same JPEG in a loop; the damage is cumulative. Keep the original download untouched in your project folder as the reference copy.

For screen use, resize the image to the pixel dimensions the layout actually needs before exporting. A hero image displayed at 1920 px wide does not need to ship at 7680 px.

The image page lists the pixel dimensions of every file, so you can plan ahead. Browse all images, jump to a subject through the tag index, or read the rest of the format and print questions in the FAQ index. And if you are typing a keyword and unsure of its spelling, the spelling help page will point you the right way.