Compress image to 100 KB
Hits 100 KB or less automatically — quality is tuned per image, in your browser.
Drop images here
or click to browse · JPG, PNG, WebP · multiple files supported
Images are processed on your device and never uploaded.
Options
How it works
- Drop your images into the box above.
- The tool finds the highest quality that fits under 100 KB. If needed, dimensions are scaled down slightly as well.
- Download the results — each one is guaranteed at or under the target.
Frequently asked questions
- Why do forms require images under 100 KB?
- Upload limits keep databases small and pages fast. Government portals, job applications and exam registrations commonly enforce strict limits, which this tool matches exactly.
- Are my images uploaded to a server?
- No. All compression happens locally in your browser. Your images never leave your device, which also makes the process instant — there is no upload or download wait.
- Will compressing reduce image quality?
- Compression removes data your eyes barely notice. At the default settings the difference is invisible in normal viewing. You can adjust the quality level under Options if you need finer control.
- What if my photo can’t reach 100 KB at good quality?
- When quality reduction alone isn’t enough, the tool scales the image dimensions down step by step until it fits. A slightly smaller but clean image beats a heavily artifacted one at full size — and for form uploads, exact dimensions rarely matter.
- Will the result ever be over 100 KB?
- No. The tool verifies the encoded size before offering the download, so every result is at or under 100 KB — safe to submit to forms that enforce the limit strictly.
About this tool
A 100 KB limit is rarely arbitrary — it is the number a specific upload form enforces. Government portals, university applications, visa systems and job boards all cap image uploads to keep their storage predictable, and they reject anything even one kilobyte over. Instead of guessing at quality settings and re-exporting until a file happens to fit, this tool takes the limit itself as the input and does the tuning for you.
Under the hood it runs a search: the image is re-encoded at successively adjusted quality levels until it finds the highest one that lands at or under 100 KB. If even the lowest reasonable quality is still too large — common with very high-resolution photos and small targets — the dimensions are scaled down step by step until the target is met. The result is always the best-looking image possible within the limit, and never over it.
Two tips help the tool help you. First, start from the original photo rather than a screenshot or an already-compressed copy, since every earlier save costs quality you can’t get back. Second, prefer JPG or WebP output for photographs: they reach small targets at far higher visual quality than PNG, which is designed for graphics rather than photos. Everything runs locally in your browser, so files are never uploaded and results are instant.