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Emoji & Sticker Maker

Resize images to Slack/Discord emoji & sticker specs.

Files never leave your device · Processed in your browser

Export list (click a row = preview size · export renders all)

    What is this?

    Resizes your photo or artwork to the exact pixel specs required by Slack, Discord, KakaoTalk, LINE and more, then saves it as PNG — all in your browser, no upload.

    How to use it

    Pick or drop an image and the preview appears instantly. Choose a size preset, fit mode and background, then drag to move, wheel/slider to zoom and slider to rotate in the preview, and press Export. Set the preset to "Custom" to type your own width and height.

    Contain vs Cover

    Contain keeps the aspect ratio, fits the whole image inside and pads the rest. Cover scales to fill and crops the overflow. The fit mode sets the baseline zoom for the position/zoom controls.

    Note: A transparent background keeps any area the image doesn't cover transparent, saved as a PNG with an alpha channel.
    Privacy & safety

    Loading, resizing, previewing and saving all happen entirely in your browser — files are never uploaded or stored on a server.

    FAQ

    What does this tool do?
    It resizes your photo or artwork to the exact pixel specs platforms require — Slack emoji (128×128), Discord sticker (320×320), Kakao emoticon (360×360), LINE sticker (370×320) — and saves it as PNG, processed instantly on a browser canvas.
    Contain vs Cover — what's the difference?
    Contain keeps the aspect ratio, shrinks the whole image to fit and pads the leftover space with the background (transparent or a color). Cover scales up to fill the frame and center-crops the overflow. Use Cover for square icons, Contain to keep the whole picture.
    Can I make the background transparent?
    Yes. Choose Contain and set the background to "Transparent" and the padding stays transparent, saved as a PNG with an alpha channel — ideal for Slack/Discord emoji. It won't erase a background baked into the original photo, though.
    Is my image uploaded to a server?
    No. Loading, resizing, previewing and saving all happen in your browser only — nothing is sent to or stored on a server.

    Related tools

    Image Compressor Reduce image file size while keeping quality. Favicon Generator Generate multi-size favicons from an image. Image Format Converter Convert between PNG, JPG, WebP, AVIF and more.

    Fonts: Nanum Gothic · Black Han Sans · Jua · Do Hyeon · Gaegu · Nanum Pen Script (SIL Open Font License)