FREE BROWSER TOOL
Free Video Thumbnail Maker
Pick a platform size, drop in a background, drag your title text — export and upload.
- Data never uploads to a server
- Free, no sign-up, no watermark
- Runs offline after loading
Pick a canvas size, set a background, add big readable text.
How to make a video thumbnail
- Pick a platform size. YouTube 1280×720, Bilibili 1146×717, Xiaohongshu 1242×1660 — or custom.
- Set the background. Upload a frame or image that fills the canvas, or use a solid/gradient color.
- Add the title. Big, bold, outlined text — drag it clear of the subject's face.
- Export. Download the PNG and upload it as the video cover.
Thumbnail readability rules
Big text wins
Thumbnails render tiny in feeds — a few huge words beat a sentence. Start at the biggest size that fits.
Outline + shadow
White text with a dark outline stays readable over any background photo.
Contrast over decoration
If text fights the background, darken the photo or switch to a solid color block behind the words.
Frequently asked questions
How do I make a YouTube thumbnail?
Pick the 1280×720 preset, upload a background (it fills the frame), hit “Add text” for your title, drag it into place and export a PNG.
Which platform sizes are built in?
YouTube 1280×720, Bilibili 1146×717 and Xiaohongshu 1242×1660 — plus fully custom dimensions.
How do I keep text readable?
Go big — the title preset starts large, and outline plus shadow keeps it legible at small preview sizes. That's the core thumbnail trick.
Can I make one without a background image?
Yes — use a solid or gradient background and add text on top.
Are images uploaded?
No — compositing runs locally in your browser.