Set a 20 KB ceiling and add an image; the page re-encodes it in your browser and keeps stepping quality and dimensions down until the file fits inside 20 KB. Because both are search variables, detail is preserved for as long as the budget allows instead of being thrown away at a fixed setting.
The pixel size. Set the frame the portal states, then let the byte budget choose quality. Only lower the dimensions further if the result still exceeds 20 KB, because rejections are usually about the frame rather than the compression.
Encoders trade quality against bytes, so the output lands at or just under the 20 KB target rather than on it to the byte. Tighten or loosen the setting and run again until the size fits.
The page tries the largest clean frame that still fits first, then lowers quality only when size alone cannot reach 20 KB. Check the reported output size before you publish.
The result is downloaded as a separate file. Keep your original until you have checked the image at or under 20 KB.
Open the image at or under 20 KB in the application that consumes it and spot-check the parts that matter to you; the original file stays untouched if you need to re-run with different options.
A 20 KB limit is typical of exam boards, visa applications and the "attach a photograph" field on older institutional portals, which is why the matching frame is usually around 300 × 400 px. Upload that crop rather than the whole portrait: every background pixel you drop is detail the budget can spend elsewhere.
Open the image at or under 20 KB next to the original at full size and check text edges, faces, and flat backgrounds; re-encoding softens detail long before it looks wrong in a thumbnail.
Target a 20KB file size with browser-based compression and resizing. Check the downloaded bytes before submitting to a form.
Upload portals often cap file size at approximately 20KB file size. Instead of guessing compression settings, the Resize image to 20KB targets that limit while keeping the image usable.
Everything runs locally in your browser—files never leave your device. There is no account or watermark, and you can run multiple sessions without a daily quota. Open the page, upload, and download a ready-to-use image in seconds.
Supported formats depend on the page and are shown in its upload control; the standard resizer accepts JPG, PNG, and WEBP. You can lock aspect ratio, pick a preset, or type exact pixel values. Output quality is adjustable so you balance file size against sharpness before saving.
Tip: Start from the highest-resolution source you have. Downscaling preserves more detail than upscaling a small file.
For repeated tasks, bookmark the page or add it to your home screen on mobile. Settings stay visible so you can run the same dimensions on the next file without re-entering numbers.
These options load instantly because processing uses your device CPU rather than a remote queue. That keeps the tool responsive on shared Wi‑Fi and avoids upload timeouts on large originals.
Whenever approximately 20KB file size is the goal, a browser resizer saves a trip through desktop editing software. You can enter the required dimensions directly, and each row redraws at the size that was written.
Save a copy of your original file before resizing. Re-export from the source if you need a different size later instead of upscaling an already shrunk image.
When sharing resized images by email or chat, confirm the recipient app does not re-compress attachments. Check the downloaded dimensions and file size before sending, because recipient apps may apply another compression pass.
Bookmark this page for repeat jobs—settings stay on screen between uploads, which speeds up daily workflows for teams that resize images in batches.
Set the target size field to 20KB. The Resize image to 20KB tries to bring the output close to the requested limit by adjusting browser-side compression. Very high-resolution originals may need downscaling first, and the final byte size should be checked before submission.
Yes. It is free with no trial period, watermark, or hidden export fee. You can run multiple sessions for personal or commercial projects without signing in; each page shows its batch limit.
No. Processing happens in your browser using client-side JavaScript. Your files stay on your device, which makes it suitable for confidential documents, unreleased products, and personal photos.
Supported input formats depend on the page and are shown in its upload control. The standard browser resizer accepts JPG, PNG, and WEBP and exports JPG, PNG, or WEBP with adjustable quality.
Downscaling generally preserves sharpness because pixels are merged intelligently. Upscaling a tiny source will look soft—that is a limitation of any resizer. For best results, start with the largest original you have and scale down from there.
Yes. The interface is responsive on iOS and Android browsers. Upload from your camera roll, set dimensions, and save the processed image back to your gallery without installing an app.