Compress JPEG to 19KB
19 KB gives a tiny JPEG one additional kilobyte beyond an 18 KB target. That small difference can help edges or dimensions, but detailed photos still require substantial compromise.
Upload Your Image
Drag & drop or click to select your image (Max 20MB)
Supports JPG, PNG, GIF, WEBP formats
Multiple images? Compress them all at once
To meet the file size limit, pixel dimensions may be reduced proportionally if needed.
Got more images? Try Bulk Compress →
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Use the Extra Kilobyte at 19 KB
Protect the most important edges while accepting the limits of a thumbnail-sized JPEG.
A 19456-Byte Budget
The target provides 1024 more bytes than 18 KB, though headers and compressed pixels still share very limited space.
Prioritize Recognizable Edges
A close portrait, signature or simple object benefits more than a wide scene filled with fine background texture.
Automatic Encoding Decisions
The browser searches JPEG quality itself; there is no manual quality slider on this target-size page.
Resolution Can Be Sacrificed
The output may be scaled down when JPEG quality reduction cannot fit the file into 19 KB.
Dedicated JPEG Conversion
All accepted inputs become JPEG, so transparent areas from PNG or WebP cannot be retained.
Private On-Device Test
Compression stays in the browser while you compare the result with nearby targets.
Prepare a 19 KB JPEG in 3 Steps
Focus the image, let the browser compress it and inspect every relevant output property.
Select a Simple Source
Upload a JPG, PNG or WebP up to 20 MB and crop away detail the thumbnail does not need.
Confirm the 19 KB Limit
Set suitable dimensions while retaining the fixed JPEG output.
Review the Download
Inspect actual file size, pixel count and key edges before using it.
Make a 19 KB JPEG
Use the small extra budget over 18 KB and verify whether the local result preserves enough detail.
19 KB JPEG Compression FAQ
How one extra kilobyte affects a tiny JPEG and what still cannot be guaranteed.
The extra 1024 bytes can help, but the visual difference depends on content and dimensions.
ResizeBox calculates it as 19456 bytes.
It may require severe quality loss and smaller dimensions, or remain above the target.
It may after JPEG quality changes alone prove insufficient.
Yes, but the result is converted to JPEG and transparency is flattened.
Not necessarily. Target search is skipped, but JPEG export can still re-encode it.
Try a tighter crop, smaller intended dimensions or a larger target if the destination permits.
No. It happens locally on your device.
Yes, our image resizing tool is completely free to use. No registration required, no watermarks, and no hidden fees. Simply upload your image and resize it to your desired dimensions.
Absolutely! All image processing is done locally in your browser. Your images are never uploaded to our servers, ensuring complete privacy and security of your files.
Popular resize presets
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