Need an image under 10KB? This tool compresses any JPG, PNG or WebP to 10 kilobytes or less — guaranteed — entirely in your browser. Drop the image, download the result, upload it where it was rejected. 10KB is the strictest common limit — signatures and thumb impressions on exam forms, tiny avatars, and legacy portals.
Why the 10KB limit exists
Signature and thumb-impression uploads on competitive exam forms are the classic 10KB case: systems processing millions of applications enforce tiny files. At 10KB the tool automatically reduces dimensions to keep the image legible — which is what these portals expect, since they typically display signatures at around 140×60 pixels anyway.
How to compress an image to 10KB
- Drop your image above — or click to browse, or paste with Ctrl+V. Multiple files work at once.
- The 10 KB target is pre-selected, with JPG output for the most quality per kilobyte.
- Download your file. The size badge confirms it is at or under 10KB.
Tips for the best result at 10KB
- Use JPG for photos — PNG is lossless and struggles to hit small targets without heavy downsizing.
- Crop away empty background first — quality goes where the pixels are.
- For signatures: photograph on plain white paper in good light, crop tight to the ink, then compress — contrast survives compression far better than shadows.
- Other limits: 10KB · 20KB · 50KB · 100KB · 200KB · custom size.
Frequently asked questions
Will quality survive at 10KB?
At 10KB the tool trades resolution for legibility, which is correct for signatures and small photos. A tight crop with good contrast stays perfectly clear.
Is my image uploaded anywhere?
No — compression runs 100% in your browser. Documents and ID photos stay on your device.
Can I compress several images at once?
Yes. Drop a batch and every file is individually compressed to 10KB, then use Download all.
Is it free?
Completely — no sign-up, no watermark, no limits. See all our free daily tools and the complete compression guide.