Increase an image to a target KB size.
Some upload portals require a minimum file size. Convert a photo to JPG and add harmless trailing padding bytes until it reaches the target KB.
Result will appear here
How to use Increase Image Size KB
- Drop an image (or several) into the upload area, or click to pick from your device.
- Adjust any settings — output format, target size, pixel grid, whatever the tool exposes.
- Click Download to save the result. Everything runs locally; nothing is uploaded.
Why imgrove's Increase Image Size KB
- Free, no signup. Open the tool, use it, leave. No account, no email, no trial.
- Browser-based. All processing happens on your device. Your images never touch a server.
- Mobile-friendly. Works on iOS, Android, Chromebook — anywhere a modern browser runs.
- No watermarks. What you produce is yours.
Best for
- Meeting. meeting upload forms with minimum KB requirements
- Making. making a JPG larger without changing visible dimensions
- Testing. testing portal limits while keeping processing local
What you get
- A. a JPG padded to the requested target KB size
- A. a visible preview from the source canvas before download
Before you download
- Padding. padding increases bytes but not image quality
- Some. some strict systems may strip trailing bytes after upload
- Private by design. This tool runs locally in your browser; image pixels are processed on your device.
Frequently asked questions
Is Increase Image Size KB really free?
Yes. Every imgrove tool is free, with no signup, no trial, and no per-file limit beyond sensible browser memory.
Are my images uploaded to a server?
No. Increase Image Size KB runs entirely client-side in your browser. The image never leaves your device.
Which file formats does Increase Image Size KB support?
JPG, PNG, and WebP are supported across all first-launch imgrove tools. More formats are added only after browser smoke coverage passes.
Can I use it on a phone?
Yes. imgrove is designed mobile-first.