Compress any image to 25KB or less automatically. Perfect for exam portal photo and signature uploads, government forms and applications enforcing a 25KB file size limit.
Drop your JPEG or PNG image onto the tool. For exam portal use, resize to the required dimensions first (e.g. 200×230 pixels for photos, 140×60 pixels for signatures). Original size is shown immediately.
The binary search algorithm tests quality levels to converge on the highest quality setting that keeps the output at or under 25KB. No settings to adjust — the result is ready in under a second.
Use the comparison slider to check quality before downloading. At 25KB, properly-sized exam photos typically achieve good clarity suitable for identity verification. Click Download to save.
The 25KB limit is common on Indian state-level PSC (Public Service Commission) exam portals, some railway recruitment board (RRB) applications, certain state board examination registration forms, and older banking sector recruitment portals. It sits between the 20KB and 50KB thresholds used by other portals.
A 200×230 pixel passport-size photo at 25KB typically achieves JPEG quality 55–70, which is clearly readable for identity purposes. A smaller 100×130 pixel photo at 25KB can reach quality 80–90, looking very good. Quality depends heavily on image complexity — plain backgrounds compress better than busy ones.
Yes — if your portal specifies dimensions, match them exactly before compressing. Use a plain white or light background as required by most exam portals. Ensure the photo is front-facing with good lighting. These steps are independent of file size but are checked alongside the size limit.
Yes — process them separately. Upload your photo, compress to 25KB, download. Then upload your signature image and compress to 25KB (or whatever your portal specifies for signatures — sometimes different limits apply). The tool handles one image at a time.
At standard exam photo dimensions (200×230 or 200×200 pixels), 25KB is sufficient for clear, readable identity photos. The compression artefacts at this size are minimal for simple photos with plain backgrounds. Avoid heavily patterned clothing or complex backgrounds for best results at small file sizes.
Check all requirements beyond file size: JPEG format (not PNG or WebP), specific dimensions (e.g. 200×230 pixels), colour mode (colour vs greyscale), background colour (white or light), and DPI setting if specified. File size is only one of several parameters that portal upload validators check.
