Slice Long Images Online
Four slicing modes · format & quality control · one-click ZIP — local, no upload, no queue
Slice Image FreeNo signup · 100% local · Free
Turn an extra-tall screenshot, a full-page capture or a long poster into a set of neat tiles. Four modes are available: fixed height (pixels per tile), fixed width, N equal rows and M equal columns — pick one and enter the value.
Export tiles as PNG (lossless, transparency supported), JPG (smallest) or WebP (best size/quality balance), then download everything as a single ZIP instead of saving files one by one.
Features
How to use
- 1Click "Choose image" and import a long image.
- 2Pick a slicing mode: fixed height / fixed width / N equal rows / M equal columns.
- 3Enter the value (e.g. 800px per tile, or split into 6 rows), then choose output format and quality.
- 4Click "Slice", then "Download all (ZIP)".
Use cases
FAQ
How many tiles can I make?
There is no fixed cap. In "N equal rows / M equal columns" mode you get exactly the number you enter; in fixed height/width mode the count is derived from the image size, and any final partial tile is kept at its actual remaining size.
Does slicing reduce quality?
PNG output is lossless, so quality is unchanged. JPG / WebP re-encode at the quality you set — at the default 92 the difference is virtually invisible.
How are ZIP files named? Is the order right?
Tiles are numbered from 1 upward following the original top-to-bottom (or left-to-right) order, so sorting the extracted files by name gives you the correct sequence.
How large an image can I slice?
There is no server-side limit, but tiles are drawn on your device, so very long images (tens of thousands of pixels) use more memory and take longer.
Are images uploaded?
No. Slicing and ZIP packing both run locally in your browser — files never leave your device.