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Show HN: An all-in-one image crop/split/collage tool (no uploads, no watermark)

harperhuang Friday, January 09, 2026

Hi HN,

I rebuilt my side project into a small “all-in-one” image toolbox: https://imagesplitter.tools

The part I’m most proud of (and personally use the most) is the collage workflow:

1. Grid collage (templates + merge cells for “one big + many small” layouts)

2. Long-image stitching (great for screenshots / step-by-step guides / chat logs)

3. Freeform collage (DIY your own grid layout — split/merge cells however you want — then apply that layout to the grid collage)

My motivation was pretty simple: I kept bouncing between different sites for basic image chores, and many of them add watermarks, require login, or feel sketchy for privacy. So I made this with a few strict rules:

1. Free, no watermark 2. Privacy-first: processing happens locally in the browser (no upload/storage)

Besides collages, it also includes common utilities I often need:

crop (free/aspect/circle/shape), grid split + ZIP export, batch convert (JPG/PNG/WebP/ICO…), compress, images→GIF, text/markdown/html→image, QR generate/decode, color picker, image info, etc.

I’d really love feedback:

1) What’s the most annoying part of making collages / long images?

2) Any “must-have” features you’d expect for this kind of tool?

Thanks for taking a look — happy to iterate based on your comments.

Summary
ImageSplitter.tools is a free web-based tool that allows users to split and crop images into multiple smaller images. The tool provides various options for customizing the size and layout of the resulting images, making it a versatile solution for creating image assets for websites, social media, and other applications.
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Summary
imagesplitter.tools
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