Compress an image to 600 KB
High-quality previews and proofs that are still easy to send.
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How it works
Add your images
Drag and drop, paste, or pick files. They upload over an encrypted connection.
Pick a quality or a target size
Use the quality slider, or tell it exactly how many KB or MB you need.
Download
Save each file, or grab them all at once as a ZIP.
600 KB is a size photographers and designers often use for previews and proofs. It keeps a picture sharp enough to judge composition and detail, and it is light enough to send in a message or a shared album.
The tool chooses the highest quality that fits under 600,000 bytes and reduces the pixel size only if it must. Most photos end near 2200 pixels wide with very little visible loss at normal viewing size.
A proof has a particular job. It has to let a client decide, and it should be less useful than the final file for anything beyond looking. A 600 KB version does the first and discourages the second.
What 600 KB gives you
Six hundred kilobytes is 4.8 million bits. That supports a photo around 2200 pixels square or 2400 by 1600 for a landscape. A reader can zoom in and see what the picture contains, and a printer would still want the original.
Proofs for clients
Sending a client full-size originals invites unplanned uses and fills their mailbox. A 600 KB preview shows the work, loads quickly on any connection, and keeps the high-quality files with you until the job is agreed.
Portfolio pictures
A portfolio page shows pictures large, and the visitor is judging the work. At 600 KB the gradients in a sky stay smooth and fine texture in clothing survives. Use this target for the pictures you want to be remembered.
Photographs of artwork and products
Flat artwork and product shots need accurate colour and clean edges. Compression does not shift colours, but banding can appear in smooth areas. If you see it at 600 KB, raise the target a little for that picture.
Keeping the originals safe
Never overwrite your originals. Keep them in a separate folder and add a suffix such as -600kb to the compressed copies, so you always know which is which.
Preparing a set for a client
Pick the best pictures first, then compress them all at once with the same target. Rename the files in a sensible order, such as the date and a running number, so the client can refer to them by name.
Send the set as a shared link or in batches, and invite comments on specific numbers, since that is far quicker than describing a picture in words.
Quality on different screens
A client may open the picture on a phone, a laptop or a large monitor. At 600 KB the picture looks good on all three, though a slight softness can show on the biggest. That is a sound balance between weight and quality.
If the client wants more, offer chosen pictures at full size.
Frequently asked questions
Is 600 KB enough for a photo on a large monitor?
It looks good on most monitors at full screen. For very large displays, offer a bigger file on request.
How many 600 KB pictures fit in an email?
That depends on the mailbox limit. As a guide, ten of them weigh about six megabytes.
Do I lose RAW detail?
Yes, compression discards data. Keep the RAW file as the master.
Can I compress a RAW file here?
Many camera RAW formats are read and developed first, then compressed to your target.
Will the picture have a watermark?
No. If you want one, add it with the watermark tool.
Is the order of operations important?
Resize, watermark and crop first, then compress last, so the target applies to the final picture.