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YouTube thumbnail resizer

1280 × 720 px, 16:9, under 2 MB.

Preset

Drop images here, or paste with Ctrl+V

JPG, PNG, WebP, GIF or HEIC. Several at once is fine.

Settings size, KB limit, format, DPI
1 to 100, empty = automatic

    Your images are processed on this device and never uploaded.

    Crop image

    Drag the box to move it and the corners to resize. With the box focused, arrow keys move it and Shift+arrow keys resize it.

    Example with a real photo

    We ran this tool on the photo below. These are the real results.

    Original4032 × 2690 px · 7.26 MB · JPG
    Result1280 × 720 px · 403.0 KB · JPGShown smaller here; the numbers are for the full file.

    Photo: Unsplash

    What this page does
    Size1280 × 720 px (16:9)
    Minimum width640 px
    File sizeKept under 2 MB
    FormatJPG

    Platform sizes change from time to time. These are the commonly recommended sizes as of November 2026; check the platform's help centre if an upload is rejected.

    How to use it

    1. Pick the preset that matches where the image goes.
    2. Drop your image and check the preview.
    3. Download and upload it.

    Getting the YouTube thumbnail size right

    YouTube recommends 1280 × 720 for custom thumbnails. Screenshots, phone photos and designs made at other sizes get letterboxed or squashed if uploaded as they are.

    Thumbnails are viewed small, so the tool keeps the file light without visible loss. Big, high-contrast text reads best at small sizes.

    Questions

    Can I make a thumbnail from a vertical phone photo?

    Yes. "Crop to 1280 × 720" keeps the centre of the photo; "Fit without cropping" keeps all of it with a blurred background.

    Is my photo uploaded to a server?

    No. The resizing runs inside your browser with JavaScript, so the image never leaves your device. Once the page has loaded, resizing keeps working even if you go offline.