Compress a JPEG to 50KB

For files that are already JPEGs — and already compressed once.

Drop images here

or click to browse — as many files as you like

jpg · png · webp · heic → jpg

Output

Compress

Target size

KBWe tune quality (and scale down if needed) until each image fits under the target.

Max dimensionpx (optional)Caps the longest edge. Images smaller than this are never enlarged.

Step 1Drop your imagesAnywhere on the page
Step 2Set target 50 KBAlready selected for you
Step 3Download the resultOne file or a zip

Compressing a JPEG that is already a JPEG is a different problem from compressing a fresh photo, and it is worth understanding why before you are disappointed by the result.

The practical consequence is that a JPEG already saved at low quality has much less room to shrink cleanly than an untouched original. If you still have the source file — the original camera JPEG, or better a RAW or PNG export — start from that rather than from a copy that has been through a messaging app.

Where the file has only been compressed once at high quality, going to 50KB is usually unproblematic. The tool searches for the highest quality that still fits, so it takes as little as it can rather than applying a fixed aggressive setting.

Quality preserved

Generation loss

JPEG is lossy, and its losses are permanent. When your camera or phone wrote the original file it already discarded detail and introduced a faint block structure across the image. Re-encoding takes that damaged image as its new input and compresses it again — including the artefacts, which it now faithfully preserves as though they were real detail. This is called generation loss, and it is why a JPEG re-saved repeatedly degrades far faster than the file size suggests.

Not sure it held up? Every result has a Compare button — drag the divider to see your original against the processed version at full size.

Common questions

Does recompressing a JPEG make it worse?

Yes, a little, every time. Each save discards more detail and locks in the previous save's artefacts. Working from the original file rather than a forwarded or downloaded copy gives a noticeably better result.

Why does my WhatsApp photo look bad at 50KB?

Messaging apps compress images heavily before sending, so what you received is already a degraded copy. Compressing it again compounds the damage. Ask for the original file if the quality matters.

Is it better to reduce dimensions or quality?

For an already-compressed JPEG, reducing dimensions often looks better, because scaling down averages away the existing block artefacts instead of re-encoding them.