Compress any image to 20KB or less automatically. Designed for competitive exam portals, legacy government systems and upload forms with a strict 20KB file size limit.
Upload a JPEG or PNG image. For best results at 20 KB, use a photo that is already resized to the required dimensions (e.g. 200×230 pixels for exam photos). Smaller source dimensions make it much easier to achieve good quality at 20 KB.
The binary search algorithm instantly finds the highest quality setting that keeps the output at or under 20 KB. For small, properly-sized photos this typically achieves excellent quality. For large images, the quality will be reduced significantly to hit the target.
The result shows the final file size, quality used, and compression percentage. Click Download to save the 20 KB image. If the quality is lower than you need, resize the source image to smaller dimensions and try again for better results.
The 20 KB limit is used by some Indian competitive exam portals, legacy banking and insurance application portals, older government ID verification systems, some school and college admission portals in India, and certain older CMS systems that limit uploaded media file sizes. The 20 KB limit is less common than 50 KB or 100 KB but remains in use on older platforms.
Yes — if the image dimensions are small enough. A 200×230 pixel photo (standard exam photo size) at 20 KB with JPEG compression looks quite acceptable for its intended display size. The key insight is that file size and quality are both relative to dimensions: 20 KB for a 200×230 image is very different from 20 KB for a 1920×1080 image (which would look terrible).
For exam portal submissions, most portals specify dimensions along with the file size limit. Common exam photo requirements are 200×230 pixels or 200×200 pixels. At these dimensions, 20 KB is achievable with a quality of around 60–75, which is acceptable for document submission purposes. Always check your specific portal's dimension requirements before compressing.
If quality is too low, the only solution is to reduce the image dimensions before compressing. A smaller image requires fewer bytes to represent, so the quality setting needed to hit 20 KB increases as dimensions decrease. Try reducing dimensions by 50% and compressing again. If the portal specifies both dimensions and file size, ensure your image matches the dimension requirement exactly.
Yes — NEET and JEE application portals typically require a candidate photograph in JPEG format, passport-size dimensions, and often a 50 KB or 20 KB maximum file size. This tool automatically finds the quality to hit 20 KB. Ensure your photo meets the other requirements: white background, face clearly visible, no accessories obscuring the face, and JPEG format.
Yes — signature images are ideal for this tool because they are typically simple (black ink on white background) and compress very efficiently. A 140×60 pixel signature scan at 20 KB will look crisp and clear. Many exam portals require both a photo and a signature, each with separate file size limits (often 20 KB for signatures).
The tool tests down to quality 1 (minimum JPEG quality). If even at quality 1 the compressed image exceeds 20 KB, this means the image dimensions are too large for the target file size. In this case, a message suggests resizing the image to smaller dimensions. For most standard exam photo sizes (200×230 pixels), quality 1 will always produce a file well under 20 KB.
For the 20 KB target, JPEG is the only viable output format for photographic content. PNG lossless compression cannot achieve such small file sizes for photographs. The tool automatically converts PNG input to JPEG output when targeting 20 KB. WebP could achieve similar sizes to JPEG, but JPEG is universally accepted by portal upload systems.
Once the page is loaded in your browser, the compression functionality works without an internet connection since all processing is done locally by JavaScript. However, you need to load the page initially while online. No data is sent to servers during compression — it is entirely self-contained in the browser.
While WhatsApp accepts larger profile photos (up to 5 MB), you can compress to 20 KB if you want the absolute minimum file size. However, for profile photos displayed at 40×40 to 200×200 pixels on screen, 50–100 KB is more appropriate to maintain acceptable quality. Use 20 KB only when a specific portal or form requirement demands it.
