Image Stitcher
Join images side by side, top to bottom or in a grid, and merge scrolling screenshots at their overlap.
Free, no uploads, no sign-up. Runs 100% in your browser.
How Image Stitcher works
Images are scaled to the same width or height and drawn on one canvas in your order. For scrolling screenshots, each pixel row is fingerprinted and the tool finds where the bottom of one shot repeats at the top of the next, then joins them there.
Input: JPG, PNG, WEBP. Output: PNG, JPG.
How to use Image Stitcher
- Drop two or more images.
- Put them in order and pick a direction.
- Turn on overlap joining for screenshots.
- Download the stitched image.
Tips
- Most image tools accept many files at once.
- WebP and AVIF give much smaller files than JPG at the same visual quality.
- Set a default image quality in Settings. Tools that do not choose their own quality use it.
Image Stitcher FAQ
- Are my files uploaded?
- No. This tool runs entirely in your browser tab. Files are read from your disk into memory and the result is generated locally.
- Is it free? Are there limits or watermarks?
- Free and open source (MIT). There are no file-size caps, daily quotas, accounts or watermarks.
- Does it work offline?
- Yes, once the page (and any engine it needs) has loaded, it keeps working without a connection thanks to the service worker cache.
Related tools
- Collage Maker: Arrange photos into grid layouts with spacing and borders.
- PDF to Long Image: Stack all PDF pages into one tall image (JPG, PNG, WEBP) or one tall PDF page for easy scrolling.
- Image Splitter: Slice an image into a grid of tiles (Instagram carousels).
- Image Compressor: Shrink images in bulk with quality and width controls and live savings.