How do I compress an image to 50 KB?
Open your photo in the compressor above and choose 50 KB. The tool lowers the JPG quality step by step until the file is just under 50 KB, and only reduces the width and height if quality alone isn't enough. Then press Download JPG. It takes about a second and nothing is uploaded.
How to reduce a photo to a specific size in KB
- Click the upload area and choose your photo (JPG, PNG or WebP). It is opened on your device and never uploaded.
- Pick a target size such as 20 KB, 50 KB or 100 KB, or type any size in the box.
- Wait a moment while the tool finds the highest JPG quality that still fits under your target, shrinking the dimensions slightly only if needed.
- Check the new file size and dimensions, then press Download JPG. The file name includes the size, for example photo-50kb.jpg.
What file size do upload forms usually ask for?
| Target size | Typically required for |
|---|---|
| 10–20 KB | Signatures, thumb impressions and passport-size photos on government and exam portals |
| 20–50 KB | Applicant photos for job applications, university and scholarship forms |
| 50–100 KB | Profile photos and ID pictures |
| 100–300 KB | Scanned certificates, ID cards and documents saved as images |
| 500 KB–1 MB | Email attachments and website uploads that still need to look sharp |
Always check the exact limit and pixel dimensions on the form itself. If it asks for both, for example 200 × 230 pixels and under 50 KB, crop to the dimensions first and then compress.
Why compress here instead of an online converter?
- Exact target. You choose the size in KB; most compressors only offer "low, medium, high".
- Private. Many converters upload your photo to a server. Here the work is done by your browser.
- Best quality for the size. The tool searches for the highest quality that fits, instead of using one fixed setting.
How do I reduce photo size online without losing quality?
This image size reducer lowers the JPG quality step by step and only shrinks the pixel size when quality alone is not enough, so the photo stays as sharp as the target allows. For a 50kb or 100kb limit most phone photos still look clean; for 20kb the tool also scales the photo down, which is what upload forms expect anyway. Every step runs in your browser, so you can reduce image size in KB as often as you like.
How do I make a JPG smaller?
Choose the photo, pick the size the form asks for (for example 20kb, 50kb, 100kb or 200kb) and download the result. To make a JPG smaller in pixels instead of KB, for example for a website, use the Aspect Ratio Converter or the photo option in Zip & Compress Files.
Questions
How do I reduce a photo to 20 KB?
Choose your photo above and click 20 KB. Most phone photos also need their dimensions reduced to get that small, which the tool does automatically while keeping the image as sharp as possible.
Is my photo uploaded to a server?
No. The compression runs in your browser using your own device. Nothing is sent to Okviro Tools or anyone else.
Why is the result a JPG?
JPG gives the smallest files for photos and is accepted by almost every upload form. Transparent areas in a PNG become white.
Is 50 KB counted as 50,000 or 51,200 bytes?
We use 1 KB = 1024 bytes, which is how Windows and most upload forms count. For a strict 50,000-byte limit, type 48 in the size box to be safe.
The photo got smaller in pixels. Why?
Very low targets like 10 or 20 KB can't fit a large photo even at the lowest quality, so the tool also reduces its width and height. For forms that need exact pixels, resize first.
Does it work on iPhone and Android?
Yes. Open the page in Safari or Chrome, tap the upload area and pick a photo from your gallery. The compressed JPG is saved to your downloads.
Can I compress a PDF to a size in KB here?
Not yet. This tool works with images: JPG, PNG and WebP. A PDF compressor is planned.
Can I compress iPhone HEIC photos?
Yes. Choose the .HEIC file like any other photo. It is converted to JPG in your browser and then compressed to your target size, so you get a small JPG that every upload form accepts.
What is the best free image size reducer?
One that reaches the exact size you need without uploading your photo. This tool compresses to a target such as 20kb, 50kb or 100kb in your browser, shows the final size before you download, and works for JPG, PNG, WebP and HEIC.