Free, private, browser-only — your photo never leaves your device
JPG · PNG · WEBP
Upload an image to generate your emoji mosaic
Real conversions made with this tool, shown at default settings.
Four steps, all running locally in your browser tab. Nothing is uploaded anywhere.
Drag a JPG, PNG, or WEBP into the drop zone, or click it to browse your files. The image stays on your device — it's read directly into your browser's memory and never sent to a server.
Grid lines emoji up in a clean rows-and-columns layout for the sharpest detail. Mosaic adds a slight random offset and rotation to each emoji for a hand-placed, organic feel. Chart scales each emoji by brightness, so light areas use larger emoji and shadows shrink down — closer to a halftone print effect.
Analysis Window controls how big a block of pixels gets averaged into one emoji — lower values (5–7px) capture fine detail like eyes and edges; higher values (15px+) render faster and look bolder from a distance. Match Tolerance controls how strict the color matching is — low tolerance keeps colors accurate, high tolerance allows more emoji variety even if the match isn't perfect.
Once you're happy with the preview, click Download Image to save a PNG at full resolution. For large prints, bump Output Emoji Size up to 20–40px before downloading — this increases the final pixel dimensions.
Clear subjects on simple backgrounds produce the sharpest mosaics.
A face or single object reads far better than a busy scene.
Analysis window 5–7px gives fine detail. 10–15px is faster and bolder.
Bump emoji size to 20–40px before downloading for large formats.
Low = accurate colors. High = playful mix of many different emojis.
Grid is sharpest. Mosaic feels hand-laid. Chart maps brightness to size.
No. Every step — reading the file, analyzing pixel colors, matching emoji, and drawing the final mosaic — happens inside your browser using JavaScript and the Canvas API. Your photo never leaves your device, and this tool has no backend that receives image data.
No. The tool is free with no account, no email, and no watermark on the downloaded image.
JPG, PNG, and WEBP. The tool reads whatever your browser's Image API supports, so most common photo formats work without conversion.
If a pixel block's average color doesn't fall within your current Match Tolerance of any profiled emoji, that cell is left blank (or shows your chosen background color). Raising Match Tolerance or lowering Allowed Empty Space usually fills in more cells.
The mosaic image itself, as generated by this tool, is yours to use. However, the underlying photo you upload must be one you own or have rights to use — see the Disclaimer section below. Emoji glyphs are rendered using your operating system's built-in emoji font, not a licensed third-party asset.
Emoji are rendered by your operating system's font, not by this tool. The same emoji can look different on Windows, macOS, iOS, and Android, so the exact colors and shapes in your downloaded mosaic depend on the device you generated it on.
Emoji Mosaic is a small, single-purpose tool: it takes a photo and rebuilds it out of emoji characters, matched cell-by-cell to the original image's colors. There's no app to install and no account to create — it's a page that does one thing.
The matching works by sampling the average color of small blocks of your photo, then comparing that against a pre-analyzed color profile of dozens of emoji glyphs, picking the closest match within your chosen tolerance.
Why it's built this way: processing the image entirely in-browser means there's no server cost, no upload wait, and no privacy question about where your photo goes — it simply never goes anywhere.
This is an independent tool and is not affiliated with Apple, Google, Unicode Consortium, or any platform that designs emoji glyphs. Emoji rendering comes from your own device's font.
Use of photos: You are responsible for the images you upload. Only use photos you own or have explicit permission to use. This tool does not store, transmit, or review uploaded images — all processing happens locally in your browser — so we have no ability to moderate content, which means the responsibility for appropriate use rests entirely with you.
No warranty: This tool is provided "as is" with no guarantee of accuracy, availability, or fitness for a particular purpose, including print production. Colors may render differently across devices due to differences in emoji fonts between operating systems.
Emoji trademarks: Emoji glyphs displayed are rendered by your device's operating system and are the property of their respective platform owners (Apple, Google, Microsoft, etc.). This tool does not redistribute or license emoji assets — it only arranges your device's existing system emoji into a pattern.
No liability: We are not liable for any loss or damage arising from use of this tool, including but not limited to lost files, incorrect output, or downstream use of generated images.