How it works
Open the image
A signature, a photo or a scan; nothing is uploaded.
Keep 20 KB, or click another size
The budget is already 20 KB; the buttons under it set 50, 100 or 200 KB in one click.
Download
The largest file under 20 KB, with the size and quality it reached.
Compress Image to 20KB converter: the complete guide
Most people who convert compress image to 20kb want one thing: a clean, stylised version of your photo that looks drawn on purpose. Not every converter delivers it; plenty smear a photo into an oil-painting mess or lose the face in a muddy threshold. Here is what this one does differently, and how to get the best JPG out of your image.
Searching for reduce image size to 20kb lands you here too. The steps are short: drop your image into the box above, check the result, and download a JPG when it looks right.
Image and JPG: what changes
- Image: Any picture file: a PNG, a JPG, a WebP, a HEIC from a phone or a scan. A picture is pixels, so it has to be traced or redrawn before a machine or a vector program can use it.
- JPG: A photograph compressed by throwing away detail the eye is bad at noticing. Very small files for photographs, and universal support.
How the Image to JPG converter works
Your image is processed in the browser at full resolution. Edges are found from colour as well as brightness, so a red shirt against a green wall still has its edge even when both are the same shade of grey.
Noise, texture and background clutter are quietened before the style is drawn, then the result is shown beside your original so you can compare, change the strength and regenerate before you save it as a JPG.
What the JPG is used for
- Photographs
- Email and messaging
- Web pages where size matters more than edges
What makes this Image to JPG converter different
- Noise quietened first. Texture and clutter are reduced before the style is drawn, so the result is clean rather than smeared.
- Side by side. Original and result together, with the controls beside them.
- Nothing uploaded. Faces and family photos stay on your device.
Tips for the best JPG
- If you have the same picture in several formats, PNG is usually the cleanest source.
- Use a sharp, well-lit photo with the subject filling most of the frame.
- A plain background gives a cleaner result; remove a busy one first.
- Try a couple of strengths: the best setting depends on the photo.
On the blog: Compress Image to 20KB: Steps, Tips and Mistakes to Avoid
Compress an image to 20KB for a form upload
Forms that ask for a signature under 20 KB or a small photo usually refuse the upload outright when the file is too big. This page opens with a 20 KB budget: drop the image in and it compresses the image to 20KB, keeping the highest JPEG quality that fits.
A phone photo is several megabytes, so reaching 20 KB normally means making it smaller in pixels too. The result says when that happened and to what size, so you can check it still meets the form's pixel rules.
Signatures: crop first
Crop the signature close to the ink and photograph it on white paper in good light. Less background means more of the 20 KB goes on the signature itself.
Why it matters
It hits the number you asked for
Quality percent is the wrong dial for "make this 100 KB", because the quality that lands on 100 KB is different for every picture.
Bisection, not stepping
File size is not linear in quality, so the search halves the range each time. About eight encodes covers the whole range to within a percent.
It scales only when it must
If no quality setting fits, there is no quality left to give and the only thing that reduces bytes is fewer pixels. That happens last, and it is stated in the result.
It refuses rather than pretends
If the budget cannot be met at all, you are told. You do not get an oversized file described as a success.
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Questions
How do I convert Image to JPG?
Drop your image into the box at the top of this page and press Convert to JPG. The conversion runs in your browser in a few seconds. Check the result, then download a JPG.
What is the best compress image to 20kb converter?
One that gives you a clean, stylised version of your photo that looks drawn on purpose, shows the result before you pay, and does not upload your file. That is what this page is built to do.
The form also asks for a pixel size. What then?
Resize it to the size asked for with the resize tool first, then bring it here: a small picture reaches 20 KB at a higher quality.
Why is my file 18 KB, not 20 KB?
The budget is a ceiling: you get the largest file that stays under it.
Why is my file smaller than the budget?
The budget is a ceiling. The search returns the largest file that stays under it, so a little headroom is normal.
Can I do this with a PNG?
PNG is lossless, so there is no quality dial. A PNG is re-encoded as JPEG unless it has transparency to protect.
What if it cannot reach the budget?
It says so, and suggests cropping or a larger budget, rather than handing back a file that does not fit.
Related tools: JPG Converter · Compress Image to a Size · WebP Compressor · Photo to Sketch · Background Remover · SVG Optimizer · Image to SVG
